/* $Id$ */
-/*
- * zend_alloc is designed to be a modern CPU cache friendly memory manager
- * for PHP. Most ideas are taken from jemalloc and tcmalloc implementations.
- *
- * All allocations are split into 3 categories:
- *
- * Huge - the size is greater than CHUNK size (~2M by default), allocation is
- * performed using mmap().
- *
- * Large - a number of pages (4096K by default) inside a CHUNK. Large blocks
- * are always alligned on page boundary.
- *
- * Small - less than half of page size. Small sizes are aligned to nearest
- * greater predefined small size (there are 30 predefined sizes:
- * 2, 4, 8, 16, 24, 32, ... 2048). Small blocks are allocated from
- * RUNs. Each RUN is allocated as a single or few following pages.
- * Allocation inside RUNs implemented as fetching first element from
- * a list of free elements or first bit from bitset of free elements.
- *
- * zend_alloc allocates memory from OS by CHUNKs, these CHUNKs and huge memory
- * blocks are always aligned to CHUNK boundary. So it's very easy to determine
- * the CHUNK owning the certain pointer. Regular CHUNKs reserve a single
- * page at start for special purpose. It contains bitset of free pages,
- * few bitset for available runs of predefined small sizes, map of pages that
- * keeps information about usage of each page in this CHUNK, etc.
- *
- * zend_alloc provides familiar emalloc/efree/erealloc API, but in addition it
- * provides specialized and optimized routines to allocate blocks of predefined
- * sizes (e.g. emalloc_2(), emallc_4(), ..., emalloc_large(), etc)
- * The library uses C preprocessor tricks that substitute calls to emalloc()
- * with more specialized routines when the requested size is known.
- */
-
#include "zend.h"
#include "zend_alloc.h"
#include "zend_globals.h"
# include <process.h>
#endif
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
+#ifndef ZEND_MM_HEAP_PROTECTION
+# define ZEND_MM_HEAP_PROTECTION ZEND_DEBUG
+#endif
+
+#ifndef ZEND_MM_SAFE_UNLINKING
+# define ZEND_MM_SAFE_UNLINKING 1
+#endif
+
+#ifndef ZEND_MM_COOKIES
+# define ZEND_MM_COOKIES ZEND_DEBUG
+#endif
#ifdef _WIN64
# define PTR_FMT "0x%0.16I64x"
}
#endif
-static ZEND_NORETURN void zend_mm_panic(const char *message)
+#if (defined (__GNUC__) && __GNUC__ > 2 ) && !defined(__INTEL_COMPILER) && !defined(DARWIN) && !defined(__hpux) && !defined(_AIX)
+static void zend_mm_panic(const char *message) __attribute__ ((noreturn));
+#endif
+
+static void zend_mm_panic(const char *message)
{
fprintf(stderr, "%s\n", message);
/* See http://support.microsoft.com/kb/190351 */
/* Storage Manager */
/*******************/
+#ifdef ZEND_WIN32
+# define HAVE_MEM_WIN32 /* use VirtualAlloc() to allocate memory */
+#endif
+#define HAVE_MEM_MALLOC /* use malloc() to allocate segments */
+
#include <sys/types.h>
#include <sys/stat.h>
#if HAVE_LIMITS_H
#include <fcntl.h>
#include <errno.h>
-#ifndef _WIN32
+#if defined(HAVE_MEM_MMAP_ANON) || defined(HAVE_MEM_MMAP_ZERO)
# ifdef HAVE_MREMAP
# ifndef _GNU_SOURCE
# define _GNU_SOURCE
# ifndef MAP_FAILED
# define MAP_FAILED ((void*)-1)
# endif
-# ifndef MAP_POPULATE
-# define MAP_POPULATE 0
-#endif
#endif
-/****************/
-/* Heap Manager */
-/****************/
+static zend_mm_storage* zend_mm_mem_dummy_init(void *params)
+{
+ return malloc(sizeof(zend_mm_storage));
+}
-#ifndef ZEND_MM_STAT
-# define ZEND_MM_STAT 1 /* track current and peak memory usage */
-#endif
-#ifndef ZEND_MM_LIMIT
-# define ZEND_MM_LIMIT 1 /* support for user-defined memory limit */
-#endif
-#ifndef ZEND_MM_CUSTOM
-# define ZEND_MM_CUSTOM 1 /* support for custom memory allocator */
- /* USE_ZEND_ALLOC=0 may switch to system malloc() */
+static void zend_mm_mem_dummy_dtor(zend_mm_storage *storage)
+{
+ free(storage);
+}
+
+static void zend_mm_mem_dummy_compact(zend_mm_storage *storage)
+{
+}
+
+#if defined(HAVE_MEM_MMAP_ANON) || defined(HAVE_MEM_MMAP_ZERO)
+
+static zend_mm_segment* zend_mm_mem_mmap_realloc(zend_mm_storage *storage, zend_mm_segment* segment, size_t size)
+{
+ zend_mm_segment *ret;
+#ifdef HAVE_MREMAP
+#if defined(__NetBSD__)
+ /* NetBSD 5 supports mremap but takes an extra newp argument */
+ ret = (zend_mm_segment*)mremap(segment, segment->size, segment, size, MREMAP_MAYMOVE);
+#else
+ ret = (zend_mm_segment*)mremap(segment, segment->size, size, MREMAP_MAYMOVE);
#endif
-#ifndef ZEND_MM_SPEC_CT
-# define ZEND_MM_SPEC_CT 0 /* use compile-time specializer */
+ if (ret == MAP_FAILED) {
#endif
-#ifndef ZEND_MM_SPEC_RT
-# define ZEND_MM_SPEC_RT 0 /* use run-time specializer */
+ ret = storage->handlers->_alloc(storage, size);
+ if (ret) {
+ memcpy(ret, segment, size > segment->size ? segment->size : size);
+ storage->handlers->_free(storage, segment);
+ }
+#ifdef HAVE_MREMAP
+ }
#endif
-#ifndef ZEND_MM_ERROR
-# define ZEND_MM_ERROR 1 /* report system errors */
+ return ret;
+}
+
+static void zend_mm_mem_mmap_free(zend_mm_storage *storage, zend_mm_segment* segment)
+{
+ munmap((void*)segment, segment->size);
+}
+
#endif
-#ifndef ZEND_MM_CHECK
-# define ZEND_MM_CHECK(condition, message) do { \
- if (UNEXPECTED(!(condition))) { \
- zend_mm_panic(message); \
- } \
- } while (0)
+#ifdef HAVE_MEM_MMAP_ANON
+
+static zend_mm_segment* zend_mm_mem_mmap_anon_alloc(zend_mm_storage *storage, size_t size)
+{
+ zend_mm_segment *ret = (zend_mm_segment*)mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
+ if (ret == MAP_FAILED) {
+ ret = NULL;
+ }
+ return ret;
+}
+
+# define ZEND_MM_MEM_MMAP_ANON_DSC {"mmap_anon", zend_mm_mem_dummy_init, zend_mm_mem_dummy_dtor, zend_mm_mem_dummy_compact, zend_mm_mem_mmap_anon_alloc, zend_mm_mem_mmap_realloc, zend_mm_mem_mmap_free}
+
#endif
-typedef unsigned int zend_mm_page_info; /* 4-byte integer */
-//???typedef unsigned int zend_mm_bitset; /* 4-byte or 8-byte integer */
-typedef unsigned long zend_mm_bitset; /* 4-byte or 8-byte integer */
+#ifdef HAVE_MEM_MMAP_ZERO
+
+static int zend_mm_dev_zero_fd = -1;
+
+static zend_mm_storage* zend_mm_mem_mmap_zero_init(void *params)
+{
+ if (zend_mm_dev_zero_fd == -1) {
+ zend_mm_dev_zero_fd = open("/dev/zero", O_RDWR, S_IRUSR | S_IWUSR);
+ }
+ if (zend_mm_dev_zero_fd >= 0) {
+ return malloc(sizeof(zend_mm_storage));
+ } else {
+ return NULL;
+ }
+}
+
+static void zend_mm_mem_mmap_zero_dtor(zend_mm_storage *storage)
+{
+ close(zend_mm_dev_zero_fd);
+ free(storage);
+}
+
+static zend_mm_segment* zend_mm_mem_mmap_zero_alloc(zend_mm_storage *storage, size_t size)
+{
+ zend_mm_segment *ret = (zend_mm_segment*)mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_PRIVATE, zend_mm_dev_zero_fd, 0);
+ if (ret == MAP_FAILED) {
+ ret = NULL;
+ }
+ return ret;
+}
+
+# define ZEND_MM_MEM_MMAP_ZERO_DSC {"mmap_zero", zend_mm_mem_mmap_zero_init, zend_mm_mem_mmap_zero_dtor, zend_mm_mem_dummy_compact, zend_mm_mem_mmap_zero_alloc, zend_mm_mem_mmap_realloc, zend_mm_mem_mmap_free}
-#define ZEND_MM_ALIGNED_OFFSET(size, alignment) \
- (((size_t)(size)) & ((alignment) - 1))
-#define ZEND_MM_ALIGNED_BASE(size, alignment) \
- (((size_t)(size)) & ~((alignment) - 1))
-#define ZEND_MM_ALIGNED_SIZE_EX(size, alignment) \
- (((size_t)(size) + ((alignment) - 1)) & ~((alignment) - 1))
-#define ZEND_MM_SIZE_TO_NUM(size, alignment) \
- (((size_t)(size) + ((alignment) - 1)) / (alignment))
+#endif
-#define ZEND_MM_BITSET_LEN (sizeof(zend_mm_bitset) * 8) /* 32 or 64 */
-#define ZEND_MM_PAGE_MAP_LEN (ZEND_MM_PAGES / ZEND_MM_BITSET_LEN) /* 16 or 8 */
-#define ZEND_MM_ELEMENTS_LEN (ZEND_MM_PAGE_SIZE / ZEND_MM_MIN_SMALL_SIZE / ZEND_MM_BITSET_LEN)
+#ifdef HAVE_MEM_WIN32
-typedef zend_mm_bitset zend_mm_page_map[ZEND_MM_PAGE_MAP_LEN]; /* 64B */
+static zend_mm_storage* zend_mm_mem_win32_init(void *params)
+{
+ HANDLE heap = HeapCreate(HEAP_NO_SERIALIZE, 0, 0);
+ zend_mm_storage* storage;
-#define ZEND_MM_FREE_LIST_END 0
+ if (heap == NULL) {
+ return NULL;
+ }
+ storage = (zend_mm_storage*)malloc(sizeof(zend_mm_storage));
+ if (storage == NULL) {
+ HeapDestroy(heap);
+ return NULL;
+ }
+ storage->data = (void*) heap;
+ return storage;
+}
-#define ZEND_MM_IS_FRUM 0x00000000
-#define ZEND_MM_IS_LRUN 0x00000400
-#define ZEND_MM_IS_SRUN 0x00000800
-#define ZEND_MM_IS_NRUN 0x00000c00
+static void zend_mm_mem_win32_dtor(zend_mm_storage *storage)
+{
+ HeapDestroy((HANDLE)storage->data);
+ free(storage);
+}
-#define ZEND_MM_LRUN_PAGES_MASK 0x000003ff
-#define ZEND_MM_LRUN_PAGES_OFFSET 0
+static void zend_mm_mem_win32_compact(zend_mm_storage *storage)
+{
+ HeapDestroy((HANDLE)storage->data);
+ storage->data = (void*)HeapCreate(HEAP_NO_SERIALIZE, 0, 0);
+}
-#define ZEND_MM_NRUN_PAGES_MASK 0x000003ff
-#define ZEND_MM_NRUN_PAGES_OFFSET 0
+static zend_mm_segment* zend_mm_mem_win32_alloc(zend_mm_storage *storage, size_t size)
+{
+ return (zend_mm_segment*) HeapAlloc((HANDLE)storage->data, HEAP_NO_SERIALIZE, size);
+}
-#define ZEND_MM_SRUN_BIN_NUM_MASK 0x0000001f
-#define ZEND_MM_SRUN_BITSET_MASK 0xffff0000
-#define ZEND_MM_SRUN_BIN_NUM_OFFSET 0
-#define ZEND_MM_SRUN_BITSET_OFFSET 16
+static void zend_mm_mem_win32_free(zend_mm_storage *storage, zend_mm_segment* segment)
+{
+ HeapFree((HANDLE)storage->data, HEAP_NO_SERIALIZE, segment);
+}
-#define ZEND_MM_LRUN_PAGES(info) (((info) & ZEND_MM_LRUN_PAGES_MASK) >> ZEND_MM_LRUN_PAGES_OFFSET)
-#define ZEND_MM_NRUN_PAGES(info) (((info) & ZEND_MM_NRUN_PAGES_MASK) >> ZEND_MM_NRUN_PAGES_OFFSET)
-#define ZEND_MM_SRUN_BIN_NUM(info) (((info) & ZEND_MM_SRUN_BIN_NUM_MASK) >> ZEND_MM_SRUN_BIN_NUM_OFFSET)
-#define ZEND_MM_SRUN_BITSET(info) (((info) & ZEND_MM_SRUN_BITSET_MASK) >> ZEND_MM_SRUN_BITSET_OFFSET)
+static zend_mm_segment* zend_mm_mem_win32_realloc(zend_mm_storage *storage, zend_mm_segment* segment, size_t size)
+{
+ return (zend_mm_segment*) HeapReAlloc((HANDLE)storage->data, HEAP_NO_SERIALIZE, segment, size);
+}
-#define ZEND_MM_FRUN() ZEND_MM_IS_FRUN
-#define ZEND_MM_LRUN(count) (ZEND_MM_IS_LRUN | ((count) << ZEND_MM_LRUN_PAGES_OFFSET))
-#define ZEND_MM_NRUN(num) (ZEND_MM_IS_NRUN | ((num) << ZEND_MM_NRUN_PAGES_OFFSET))
-#define ZEND_MM_SRUN(bin_num) (ZEND_MM_IS_SRUN | ((bin_num) << ZEND_MM_SRUN_BIN_NUM_OFFSET))
+# define ZEND_MM_MEM_WIN32_DSC {"win32", zend_mm_mem_win32_init, zend_mm_mem_win32_dtor, zend_mm_mem_win32_compact, zend_mm_mem_win32_alloc, zend_mm_mem_win32_realloc, zend_mm_mem_win32_free}
-#define ZEND_MM_SRUN_BITSET_SET(num, set) \
- (ZEND_MM_SRUN(num) | ((set) << ZEND_MM_SRUN_BITSET_OFFSET))
+#endif
-#define ZEND_MM_SRUN_BITSET_UPDATE(info, set) \
- ((info) | ((set) << ZEND_MM_SRUN_BITSET_OFFSET))
+#ifdef HAVE_MEM_MALLOC
-#define ZEND_MM_SRUN_BITSET_INCL(info, num) \
- ((info) | (1 << ((num) + ZEND_MM_SRUN_BITSET_OFFSET)))
+static zend_mm_segment* zend_mm_mem_malloc_alloc(zend_mm_storage *storage, size_t size)
+{
+ return (zend_mm_segment*)malloc(size);
+}
-#define ZEND_MM_SRUN_BITSET_EXCL(info, num) \
- ((info) & ~(1 << ((num) + ZEND_MM_SRUN_BITSET_OFFSET)))
+static zend_mm_segment* zend_mm_mem_malloc_realloc(zend_mm_storage *storage, zend_mm_segment *ptr, size_t size)
+{
+ return (zend_mm_segment*)realloc(ptr, size);
+}
-#define ZEND_MM_BINS 30
+static void zend_mm_mem_malloc_free(zend_mm_storage *storage, zend_mm_segment *ptr)
+{
+ free(ptr);
+}
-typedef struct _zend_mm_page zend_mm_page;
-typedef struct _zend_mm_bin zend_mm_bin;
-typedef struct _zend_mm_free_list zend_mm_free_list;
-typedef struct _zend_mm_chunk zend_mm_chunk;
-typedef struct _zend_mm_huge_list zend_mm_huge_list;
+# define ZEND_MM_MEM_MALLOC_DSC {"malloc", zend_mm_mem_dummy_init, zend_mm_mem_dummy_dtor, zend_mm_mem_dummy_compact, zend_mm_mem_malloc_alloc, zend_mm_mem_malloc_realloc, zend_mm_mem_malloc_free}
-struct _zend_mm_page {
- char bytes[ZEND_MM_PAGE_SIZE];
-};
+#endif
-struct _zend_mm_chunk {
- zend_mm_heap *heap;
- zend_mm_chunk *next;
- zend_mm_chunk *prev;
- int free_pages;
- int free_tail;
- int num;
-#if ZEND_DEBUG && defined(ZTS)
- THREAD_T thread_id;
- char reserve[64 - (sizeof(void*) * 3 + sizeof(int) * 3 + sizeof(THREAD_T))];
-#else
- char reserve[64 - (sizeof(void*) * 3 + sizeof(int) * 3)];
+static const zend_mm_mem_handlers mem_handlers[] = {
+#ifdef HAVE_MEM_WIN32
+ ZEND_MM_MEM_WIN32_DSC,
+#endif
+#ifdef HAVE_MEM_MALLOC
+ ZEND_MM_MEM_MALLOC_DSC,
#endif
- zend_mm_page_map free_map; /* 64 B */
- zend_mm_page_map small_map[ZEND_MM_BINS]; /* 1920 B (ZEND_MM_BINS <= 30) */
- zend_mm_page_info map[ZEND_MM_PAGES]; /* 2 KB = 512 * 4 */
+#ifdef HAVE_MEM_MMAP_ANON
+ ZEND_MM_MEM_MMAP_ANON_DSC,
+#endif
+#ifdef HAVE_MEM_MMAP_ZERO
+ ZEND_MM_MEM_MMAP_ZERO_DSC,
+#endif
+ {NULL, NULL, NULL, NULL, NULL, NULL}
};
-#if ZEND_DEBUG && defined(ZTS)
-# define ZEND_MM_CHECK_THREAD_ID(chunk) do { \
- ZEND_MM_CHECK((chunk)->thread_id == tsrm_thread_id(), "zend_mm_heap corrupted"); \
- } while (0)
-#else
-# define ZEND_MM_CHECK_THREAD_ID(chunk) do { \
- } while (0);
+# define ZEND_MM_STORAGE_DTOR() heap->storage->handlers->dtor(heap->storage)
+# define ZEND_MM_STORAGE_ALLOC(size) heap->storage->handlers->_alloc(heap->storage, size)
+# define ZEND_MM_STORAGE_REALLOC(ptr, size) heap->storage->handlers->_realloc(heap->storage, ptr, size)
+# define ZEND_MM_STORAGE_FREE(ptr) heap->storage->handlers->_free(heap->storage, ptr)
+
+/****************/
+/* Heap Manager */
+/****************/
+
+#define MEM_BLOCK_VALID 0x7312F8DC
+#define MEM_BLOCK_FREED 0x99954317
+#define MEM_BLOCK_CACHED 0xFB8277DC
+#define MEM_BLOCK_GUARD 0x2A8FCC84
+#define MEM_BLOCK_LEAK 0x6C5E8F2D
+
+/* mm block type */
+typedef struct _zend_mm_block_info {
+#if ZEND_MM_COOKIES
+ size_t _cookie;
#endif
+ size_t _size;
+ size_t _prev;
+} zend_mm_block_info;
#if ZEND_DEBUG
+
typedef struct _zend_mm_debug_info {
- size_t size;
- const char *filename;
- const char *orig_filename;
- uint lineno;
- uint orig_lineno;
-} zend_mm_debug_info;
+ const char *filename;
+ uint lineno;
+ const char *orig_filename;
+ uint orig_lineno;
+ size_t size;
+#if ZEND_MM_HEAP_PROTECTION
+ unsigned int start_magic;
#endif
+} zend_mm_debug_info;
-struct _zend_mm_bin {
- int next_free;
- int num_used;
-};
+#elif ZEND_MM_HEAP_PROTECTION
-struct _zend_mm_free_list {
- short next_free;
-};
+typedef struct _zend_mm_debug_info {
+ size_t size;
+ unsigned int start_magic;
+} zend_mm_debug_info;
-struct _zend_mm_huge_list {
- void *ptr;
- size_t size;
- zend_mm_huge_list *next;
-#if ZEND_DEBUG
- zend_mm_debug_info dbg;
#endif
-};
-struct _zend_mm_heap {
- zend_mm_chunk *main_chunk;
- zend_mm_chunk *cached_chunks;
- int chunks_count;
- int peak_chunks_count;
- int cached_chunks_count;
- double avg_chunks_count;
-#if ZEND_MM_STAT || ZEND_MM_LIMIT
- size_t real_size;
-#endif
-#if ZEND_MM_STAT
- size_t real_peak;
-#endif
-#if ZEND_MM_LIMIT
- size_t limit;
- int overflow;
-#endif
-#if ZEND_MM_STAT
- size_t size;
- size_t peak;
-#endif
-#if ZEND_MM_CUSTOM
- int use_custom_heap;
- void *(*_malloc)(size_t);
- void (*_free)(void*);
- void *(*_realloc)(void*, size_t);
-#endif
- zend_mm_huge_list *huge_list;
- zend_mm_bin *cache[ZEND_MM_BINS];
-};
+typedef struct _zend_mm_block {
+ zend_mm_block_info info;
+#if ZEND_DEBUG
+ unsigned int magic;
+# ifdef ZTS
+ THREAD_T thread_id;
+# endif
+ zend_mm_debug_info debug;
+#elif ZEND_MM_HEAP_PROTECTION
+ zend_mm_debug_info debug;
+#endif
+} zend_mm_block;
-static ZEND_NORETURN void zend_mm_safe_error(zend_mm_heap *heap,
- const char *format,
- size_t limit,
+typedef struct _zend_mm_small_free_block {
+ zend_mm_block_info info;
#if ZEND_DEBUG
- const char *filename,
- uint lineno,
+ unsigned int magic;
+# ifdef ZTS
+ THREAD_T thread_id;
+# endif
#endif
- size_t size)
-{
- TSRMLS_FETCH();
+ struct _zend_mm_free_block *prev_free_block;
+ struct _zend_mm_free_block *next_free_block;
+} zend_mm_small_free_block;
- heap->overflow = 1;
- zend_try {
- zend_error_noreturn(E_ERROR,
- format,
- limit,
+typedef struct _zend_mm_free_block {
+ zend_mm_block_info info;
#if ZEND_DEBUG
- filename,
- lineno,
+ unsigned int magic;
+# ifdef ZTS
+ THREAD_T thread_id;
+# endif
#endif
- size);
- } zend_catch {
- } zend_end_try();
- heap->overflow = 0;
- zend_bailout();
- exit(1);
-}
+ struct _zend_mm_free_block *prev_free_block;
+ struct _zend_mm_free_block *next_free_block;
-#define _BIN_DATA_SIZE(num, size, offset, elements, pages, x, y) size,
-static const unsigned int bin_data_size[] = {
- ZEND_MM_BINS_INFO(_BIN_DATA_SIZE, x, y)
-};
+ struct _zend_mm_free_block **parent;
+ struct _zend_mm_free_block *child[2];
+} zend_mm_free_block;
-#define _BIN_DATA_OFFSET(num, size, offset, elements, pages, x, y) offset,
-static const unsigned int bin_data_offset[] = {
- ZEND_MM_BINS_INFO(_BIN_DATA_OFFSET, x, y)
-};
+#define ZEND_MM_NUM_BUCKETS (sizeof(size_t) << 3)
-#define _BIN_DATA_ELEMENTS(num, size, offset, elements, pages, x, y) elements,
-static const int bin_elements[] = {
- ZEND_MM_BINS_INFO(_BIN_DATA_ELEMENTS, x, y)
-};
+#define ZEND_MM_CACHE 1
+#define ZEND_MM_CACHE_SIZE (ZEND_MM_NUM_BUCKETS * 4 * 1024)
+
+#ifndef ZEND_MM_CACHE_STAT
+# define ZEND_MM_CACHE_STAT 0
+#endif
-#define _BIN_DATA_PAGES(num, size, offset, elements, pages, x, y) pages,
-static const int bin_pages[] = {
- ZEND_MM_BINS_INFO(_BIN_DATA_PAGES, x, y)
+struct _zend_mm_heap {
+ int use_zend_alloc;
+ void *(*_malloc)(size_t);
+ void (*_free)(void*);
+ void *(*_realloc)(void*, size_t);
+ size_t free_bitmap;
+ size_t large_free_bitmap;
+ size_t block_size;
+ size_t compact_size;
+ zend_mm_segment *segments_list;
+ zend_mm_storage *storage;
+ size_t real_size;
+ size_t real_peak;
+ size_t limit;
+ size_t size;
+ size_t peak;
+ size_t reserve_size;
+ void *reserve;
+ int overflow;
+ int internal;
+#if ZEND_MM_CACHE
+ unsigned int cached;
+ zend_mm_free_block *cache[ZEND_MM_NUM_BUCKETS];
+#endif
+ zend_mm_free_block *free_buckets[ZEND_MM_NUM_BUCKETS*2];
+ zend_mm_free_block *large_free_buckets[ZEND_MM_NUM_BUCKETS];
+ zend_mm_free_block *rest_buckets[2];
+ int rest_count;
+#if ZEND_MM_CACHE_STAT
+ struct {
+ int count;
+ int max_count;
+ int hit;
+ int miss;
+ } cache_stat[ZEND_MM_NUM_BUCKETS+1];
+#endif
};
-static zend_always_inline int zend_mm_small_size_to_bit(size_t size)
-{
-#if defined(__GNUC__)
- if (UNEXPECTED(size == 0)) {
- return 0;
- } else {
- return sizeof(size) * 8 - __builtin_clzl(size);
+#define ZEND_MM_SMALL_FREE_BUCKET(heap, index) \
+ (zend_mm_free_block*) ((char*)&heap->free_buckets[index * 2] + \
+ sizeof(zend_mm_free_block*) * 2 - \
+ sizeof(zend_mm_small_free_block))
+
+#define ZEND_MM_REST_BUCKET(heap) \
+ (zend_mm_free_block*)((char*)&heap->rest_buckets[0] + \
+ sizeof(zend_mm_free_block*) * 2 - \
+ sizeof(zend_mm_small_free_block))
+
+#define ZEND_MM_REST_BLOCK ((zend_mm_free_block**)(zend_uintptr_t)(1))
+
+#define ZEND_MM_MAX_REST_BLOCKS 16
+
+#if ZEND_MM_COOKIES
+
+static unsigned int _zend_mm_cookie = 0;
+
+# define ZEND_MM_COOKIE(block) \
+ (((size_t)(block)) ^ _zend_mm_cookie)
+# define ZEND_MM_SET_COOKIE(block) \
+ (block)->info._cookie = ZEND_MM_COOKIE(block)
+# define ZEND_MM_CHECK_COOKIE(block) \
+ if (UNEXPECTED((block)->info._cookie != ZEND_MM_COOKIE(block))) { \
+ zend_mm_panic("zend_mm_heap corrupted"); \
}
#else
- int n = 16;
- if (size == 0) return 0;
- if (size <= 0x00ff) {n -= 8; size = size << 8;}
- if (size <= 0x0fff) {n -= 4; size = size << 4;}
- if (size <= 0x3fff) {n -= 2; size = size << 2;}
- if (size <= 0x7fff) {n -= 1;}
- return n;
+# define ZEND_MM_SET_COOKIE(block)
+# define ZEND_MM_CHECK_COOKIE(block)
#endif
-}
-#ifndef MAX
-# define MAX(a, b) (((a) > (b)) ? (a) : (b))
-#endif
+/* Default memory segment size */
+#define ZEND_MM_SEG_SIZE (256 * 1024)
-#ifndef MIN
-# define MIN(a, b) (((a) < (b)) ? (a) : (b))
+/* Reserved space for error reporting in case of memory overflow */
+#define ZEND_MM_RESERVE_SIZE (8*1024)
+
+#ifdef _WIN64
+# define ZEND_MM_LONG_CONST(x) (x##i64)
+#else
+# define ZEND_MM_LONG_CONST(x) (x##L)
#endif
-#define MAX_EXPECTED_1(a, b) (EXPECTED((a) > (b)) ? (a) : (b))
-#define MAX_EXPECTED_2(a, b) (UNEXPECTED((a) > (b)) ? (a) : (b))
-#define MIN_EXPECTED_1(a, b) (EXPECTED((a) < (b)) ? (a) : (b))
-#define MIN_EXPECTED_2(a, b) (UNEXPECTED((a) < (b)) ? (a) : (b))
+#define ZEND_MM_TYPE_MASK ZEND_MM_LONG_CONST(0x3)
-static zend_always_inline int zend_mm_small_size_to_bin(size_t size)
-{
- int n;
+#define ZEND_MM_FREE_BLOCK ZEND_MM_LONG_CONST(0x0)
+#define ZEND_MM_USED_BLOCK ZEND_MM_LONG_CONST(0x1)
+#define ZEND_MM_GUARD_BLOCK ZEND_MM_LONG_CONST(0x3)
- if (UNEXPECTED(size <= 4)) {
- return (size > 2);
- } else {
- n = zend_mm_small_size_to_bit(size - 1);
- n = 2 + 4 * MAX_EXPECTED_2(n - 6, 0) + ((size - 1) >> MAX(n - 3, 3));
- }
- return n;
-}
+#define ZEND_MM_BLOCK(b, type, size) do { \
+ size_t _size = (size); \
+ (b)->info._size = (type) | _size; \
+ ZEND_MM_BLOCK_AT(b, _size)->info._prev = (type) | _size; \
+ ZEND_MM_SET_COOKIE(b); \
+ } while (0);
+#define ZEND_MM_LAST_BLOCK(b) do { \
+ (b)->info._size = ZEND_MM_GUARD_BLOCK | ZEND_MM_ALIGNED_HEADER_SIZE; \
+ ZEND_MM_SET_MAGIC(b, MEM_BLOCK_GUARD); \
+ } while (0);
+#define ZEND_MM_BLOCK_SIZE(b) ((b)->info._size & ~ZEND_MM_TYPE_MASK)
+#define ZEND_MM_IS_FREE_BLOCK(b) (!((b)->info._size & ZEND_MM_USED_BLOCK))
+#define ZEND_MM_IS_USED_BLOCK(b) ((b)->info._size & ZEND_MM_USED_BLOCK)
+#define ZEND_MM_IS_GUARD_BLOCK(b) (((b)->info._size & ZEND_MM_TYPE_MASK) == ZEND_MM_GUARD_BLOCK)
-#define ZEND_MM_SMALL_SIZE_TO_BIN(size) zend_mm_small_size_to_bin(size)
+#define ZEND_MM_NEXT_BLOCK(b) ZEND_MM_BLOCK_AT(b, ZEND_MM_BLOCK_SIZE(b))
+#define ZEND_MM_PREV_BLOCK(b) ZEND_MM_BLOCK_AT(b, -(ssize_t)((b)->info._prev & ~ZEND_MM_TYPE_MASK))
-#define ZEND_MM_PAGE_ADDR(chunk, page_num) \
- ((void*)(((zend_mm_page*)(chunk)) + (page_num)))
+#define ZEND_MM_PREV_BLOCK_IS_FREE(b) (!((b)->info._prev & ZEND_MM_USED_BLOCK))
-/*****************/
-/* OS Allocation */
-/*****************/
+#define ZEND_MM_MARK_FIRST_BLOCK(b) ((b)->info._prev = ZEND_MM_GUARD_BLOCK)
+#define ZEND_MM_IS_FIRST_BLOCK(b) ((b)->info._prev == ZEND_MM_GUARD_BLOCK)
-static void *zend_mm_mmap_fixed(void *addr, size_t size)
-{
+/* optimized access */
+#define ZEND_MM_FREE_BLOCK_SIZE(b) (b)->info._size
-#ifdef _WIN32
- return VirtualAlloc(addr, size, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
-#else
- /* MAP_FIXED leads to discarding of the old mapping, so it can't be used. */
- void *ptr = mmap(addr, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON /*| MAP_POPULATE | MAP_HUGETLB*/, -1, 0);
+/* Aligned header size */
+#define ZEND_MM_ALIGNED_HEADER_SIZE ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_block))
+#define ZEND_MM_ALIGNED_FREE_HEADER_SIZE ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_small_free_block))
+#define ZEND_MM_MIN_ALLOC_BLOCK_SIZE ZEND_MM_ALIGNED_SIZE(ZEND_MM_ALIGNED_HEADER_SIZE + END_MAGIC_SIZE)
+#define ZEND_MM_ALIGNED_MIN_HEADER_SIZE (ZEND_MM_MIN_ALLOC_BLOCK_SIZE>ZEND_MM_ALIGNED_FREE_HEADER_SIZE?ZEND_MM_MIN_ALLOC_BLOCK_SIZE:ZEND_MM_ALIGNED_FREE_HEADER_SIZE)
+#define ZEND_MM_ALIGNED_SEGMENT_SIZE ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_segment))
- if (ptr == MAP_FAILED) {
-#if ZEND_MM_ERROR
- fprintf(stderr, "\nmmap() failed: [%d] %s\n", errno, strerror(errno));
-#endif
- return NULL;
- } else if (ptr != addr) {
- if (munmap(ptr, size) != 0) {
-#if ZEND_MM_ERROR
- fprintf(stderr, "\nmunmap() failed: [%d] %s\n", errno, strerror(errno));
-#endif
- }
- return NULL;
- }
- return ptr;
-#endif
-}
+#define ZEND_MM_MIN_SIZE ((ZEND_MM_ALIGNED_MIN_HEADER_SIZE>(ZEND_MM_ALIGNED_HEADER_SIZE+END_MAGIC_SIZE))?(ZEND_MM_ALIGNED_MIN_HEADER_SIZE-(ZEND_MM_ALIGNED_HEADER_SIZE+END_MAGIC_SIZE)):0)
-static void *zend_mm_mmap(size_t size)
-{
-#ifdef _WIN32
- void *ptr = VirtualAlloc(NULL, size, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
-
- if (ptr == NULL) {
-#if ZEND_MM_ERROR
- fprintf(stderr, "\nVirtualAlloc() failed: [%d]\n", GetLastError());
-#endif
- return NULL;
- }
- return ptr;
-#else
- void *ptr = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON /*| MAP_POPULATE | MAP_HUGETLB*/, -1, 0);
+#define ZEND_MM_MAX_SMALL_SIZE ((ZEND_MM_NUM_BUCKETS<<ZEND_MM_ALIGNMENT_LOG2)+ZEND_MM_ALIGNED_MIN_HEADER_SIZE)
+
+#define ZEND_MM_TRUE_SIZE(size) ((size<ZEND_MM_MIN_SIZE)?(ZEND_MM_ALIGNED_MIN_HEADER_SIZE):(ZEND_MM_ALIGNED_SIZE(size+ZEND_MM_ALIGNED_HEADER_SIZE+END_MAGIC_SIZE)))
+
+#define ZEND_MM_BUCKET_INDEX(true_size) ((true_size>>ZEND_MM_ALIGNMENT_LOG2)-(ZEND_MM_ALIGNED_MIN_HEADER_SIZE>>ZEND_MM_ALIGNMENT_LOG2))
+
+#define ZEND_MM_SMALL_SIZE(true_size) (true_size < ZEND_MM_MAX_SMALL_SIZE)
+
+/* Memory calculations */
+#define ZEND_MM_BLOCK_AT(blk, offset) ((zend_mm_block *) (((char *) (blk))+(offset)))
+#define ZEND_MM_DATA_OF(p) ((void *) (((char *) (p))+ZEND_MM_ALIGNED_HEADER_SIZE))
+#define ZEND_MM_HEADER_OF(blk) ZEND_MM_BLOCK_AT(blk, -(int)ZEND_MM_ALIGNED_HEADER_SIZE)
+
+/* Debug output */
+#if ZEND_DEBUG
+
+# ifdef ZTS
+# define ZEND_MM_SET_THREAD_ID(block) \
+ ((zend_mm_block*)(block))->thread_id = tsrm_thread_id()
+# define ZEND_MM_BAD_THREAD_ID(block) ((block)->thread_id != tsrm_thread_id())
+# else
+# define ZEND_MM_SET_THREAD_ID(block)
+# define ZEND_MM_BAD_THREAD_ID(block) 0
+# endif
+
+# define ZEND_MM_VALID_PTR(block) \
+ zend_mm_check_ptr(heap, block, 1 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC)
+
+# define ZEND_MM_SET_MAGIC(block, val) do { \
+ (block)->magic = (val); \
+ } while (0)
+
+# define ZEND_MM_CHECK_MAGIC(block, val) do { \
+ if ((block)->magic != (val)) { \
+ zend_mm_panic("zend_mm_heap corrupted"); \
+ } \
+ } while (0)
+
+# define ZEND_MM_SET_DEBUG_INFO(block, __size, set_valid, set_thread) do { \
+ ((zend_mm_block*)(block))->debug.filename = __zend_filename; \
+ ((zend_mm_block*)(block))->debug.lineno = __zend_lineno; \
+ ((zend_mm_block*)(block))->debug.orig_filename = __zend_orig_filename; \
+ ((zend_mm_block*)(block))->debug.orig_lineno = __zend_orig_lineno; \
+ ZEND_MM_SET_BLOCK_SIZE(block, __size); \
+ if (set_valid) { \
+ ZEND_MM_SET_MAGIC(block, MEM_BLOCK_VALID); \
+ } \
+ if (set_thread) { \
+ ZEND_MM_SET_THREAD_ID(block); \
+ } \
+ } while (0)
+
+#else
+
+# define ZEND_MM_VALID_PTR(ptr) EXPECTED(ptr != NULL)
+
+# define ZEND_MM_SET_MAGIC(block, val)
+
+# define ZEND_MM_CHECK_MAGIC(block, val)
+
+# define ZEND_MM_SET_DEBUG_INFO(block, __size, set_valid, set_thread) ZEND_MM_SET_BLOCK_SIZE(block, __size)
- if (ptr == MAP_FAILED) {
-#if ZEND_MM_ERROR
- fprintf(stderr, "\nmmap() failed: [%d] %s\n", errno, strerror(errno));
-#endif
- return NULL;
- }
- return ptr;
#endif
-}
-static void zend_mm_munmap(void *addr, size_t size)
-{
-#ifdef _WIN32
- if (VirtualFree(addr, 0, MEM_RELEASE) == 0) {
-#if ZEND_MM_ERROR
- fprintf(stderr, "\nVirtualFree() failed: [%d]\n", GetLastError());
+
+#if ZEND_MM_HEAP_PROTECTION
+
+# define ZEND_MM_CHECK_PROTECTION(block) \
+ do { \
+ if ((block)->debug.start_magic != _mem_block_start_magic || \
+ memcmp(ZEND_MM_END_MAGIC_PTR(block), &_mem_block_end_magic, END_MAGIC_SIZE) != 0) { \
+ zend_mm_panic("zend_mm_heap corrupted"); \
+ } \
+ } while (0)
+
+# define ZEND_MM_END_MAGIC_PTR(block) \
+ (((char*)(ZEND_MM_DATA_OF(block))) + ((zend_mm_block*)(block))->debug.size)
+
+# define END_MAGIC_SIZE sizeof(unsigned int)
+
+# define ZEND_MM_SET_BLOCK_SIZE(block, __size) do { \
+ char *p; \
+ ((zend_mm_block*)(block))->debug.size = (__size); \
+ p = ZEND_MM_END_MAGIC_PTR(block); \
+ ((zend_mm_block*)(block))->debug.start_magic = _mem_block_start_magic; \
+ memcpy(p, &_mem_block_end_magic, END_MAGIC_SIZE); \
+ } while (0)
+
+static unsigned int _mem_block_start_magic = 0;
+static unsigned int _mem_block_end_magic = 0;
+
+#else
+
+# if ZEND_DEBUG
+# define ZEND_MM_SET_BLOCK_SIZE(block, _size) \
+ ((zend_mm_block*)(block))->debug.size = (_size)
+# else
+# define ZEND_MM_SET_BLOCK_SIZE(block, _size)
+# endif
+
+# define ZEND_MM_CHECK_PROTECTION(block)
+
+# define END_MAGIC_SIZE 0
+
#endif
+
+#if ZEND_MM_SAFE_UNLINKING
+# define ZEND_MM_CHECK_BLOCK_LINKAGE(block) \
+ if (UNEXPECTED((block)->info._size != ZEND_MM_BLOCK_AT(block, ZEND_MM_FREE_BLOCK_SIZE(block))->info._prev) || \
+ UNEXPECTED(!UNEXPECTED(ZEND_MM_IS_FIRST_BLOCK(block)) && \
+ UNEXPECTED(ZEND_MM_PREV_BLOCK(block)->info._size != (block)->info._prev))) { \
+ zend_mm_panic("zend_mm_heap corrupted"); \
}
-#else
- if (munmap(addr, size) != 0) {
-#if ZEND_MM_ERROR
- fprintf(stderr, "\nmunmap() failed: [%d] %s\n", errno, strerror(errno));
-#endif
+#define ZEND_MM_CHECK_TREE(block) \
+ if (UNEXPECTED(*((block)->parent) != (block))) { \
+ zend_mm_panic("zend_mm_heap corrupted"); \
}
+#else
+# define ZEND_MM_CHECK_BLOCK_LINKAGE(block)
+# define ZEND_MM_CHECK_TREE(block)
#endif
-}
-/***********/
-/* Bitmask */
-/***********/
+#define ZEND_MM_LARGE_BUCKET_INDEX(S) zend_mm_high_bit(S)
-/* number of trailing set (1) bits */
-static zend_always_inline int zend_mm_bitset_nts(zend_mm_bitset bitset)
+static void *_zend_mm_alloc_int(zend_mm_heap *heap, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC) ZEND_ATTRIBUTE_MALLOC ZEND_ATTRIBUTE_ALLOC_SIZE(2);
+static void _zend_mm_free_int(zend_mm_heap *heap, void *p ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
+static void *_zend_mm_realloc_int(zend_mm_heap *heap, void *p, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC) ZEND_ATTRIBUTE_ALLOC_SIZE(3);
+
+static inline unsigned int zend_mm_high_bit(size_t _size)
{
-#if defined(__GNUC__)
- return __builtin_ctzl(~bitset);
-#else
- int n;
+#if defined(__GNUC__) && (defined(__native_client__) || defined(i386))
+ unsigned int n;
- if (bitset == (zend_mm_bitset)-1) return ZEND_MM_BITSET_LEN;
+ __asm__("bsrl %1,%0\n\t" : "=r" (n) : "rm" (_size) : "cc");
+ return n;
+#elif defined(__GNUC__) && defined(__x86_64__)
+ unsigned long n;
- n = 0;
-#if SIZEOF_LONG == 8
- if (sizeof(zend_mm_bitset) == 8) {
- if ((bitset & 0xffffffff) == 0xffffffff) {n += 32; bitset = bitset >> 32;}
+ __asm__("bsr %1,%0\n\t" : "=r" (n) : "rm" (_size) : "cc");
+ return (unsigned int)n;
+#elif defined(_MSC_VER) && defined(_M_IX86)
+ __asm {
+ bsr eax, _size
}
-#endif
- if ((bitset & 0x0000ffff) == 0x0000ffff) {n += 16; bitset = bitset >> 16;}
- if ((bitset & 0x000000ff) == 0x000000ff) {n += 8; bitset = bitset >> 8;}
- if ((bitset & 0x0000000f) == 0x0000000f) {n += 4; bitset = bitset >> 4;}
- if ((bitset & 0x00000003) == 0x00000003) {n += 2; bitset = bitset >> 2;}
- return n + (bitset & 1);
+#elif defined(__GNUC__) && (defined(__arm__) || defined(__aarch64__))
+ return (8 * SIZEOF_SIZE_T - 1) - __builtin_clzl(_size);
+#else
+ unsigned int n = 0;
+ while (_size != 0) {
+ _size = _size >> 1;
+ n++;
+ }
+ return n-1;
#endif
}
-/* number of trailing zero bits (0x01 -> 1; 0x40 -> 6; 0x00 -> LEN) */
-static zend_always_inline int zend_mm_bitset_ntz(zend_mm_bitset bitset)
+static inline unsigned int zend_mm_low_bit(size_t _size)
{
-#if defined(__GNUC__)
- return __builtin_ctzl(bitset);
-#else
- int n;
+#if defined(__GNUC__) && (defined(__native_client__) || defined(i386))
+ unsigned int n;
- if (bitset == (zend_mm_bitset)0) return ZEND_MM_BITSET_LEN;
+ __asm__("bsfl %1,%0\n\t" : "=r" (n) : "rm" (_size) : "cc");
+ return n;
+#elif defined(__GNUC__) && defined(__x86_64__)
+ unsigned long n;
+
+ __asm__("bsf %1,%0\n\t" : "=r" (n) : "rm" (_size) : "cc");
+ return (unsigned int)n;
+#elif defined(_MSC_VER) && defined(_M_IX86)
+ __asm {
+ bsf eax, _size
+ }
+#elif defined(__GNUC__) && (defined(__arm__) || defined(__aarch64__))
+ return __builtin_ctzl(_size);
+#else
+ static const int offset[16] = {4,0,1,0,2,0,1,0,3,0,1,0,2,0,1,0};
+ unsigned int n;
+ unsigned int index = 0;
- n = 1;
-#if SIZEOF_LONG == 8
- if (sizeof(zend_mm_bitset) == 8) {
- if ((bitset & 0xffffffff) == 0) {n += 32; bitset = bitset >> 32;}
+ n = offset[_size & 15];
+ while (n == 4) {
+ _size >>= 4;
+ index += n;
+ n = offset[_size & 15];
}
-#endif
- if ((bitset & 0x0000ffff) == 0) {n += 16; bitset = bitset >> 16;}
- if ((bitset & 0x000000ff) == 0) {n += 8; bitset = bitset >> 8;}
- if ((bitset & 0x0000000f) == 0) {n += 4; bitset = bitset >> 4;}
- if ((bitset & 0x00000003) == 0) {n += 2; bitset = bitset >> 2;}
- return n - (bitset & 1);
+
+ return index + n;
#endif
}
-static zend_always_inline int zend_mm_bitset_find_zero(zend_mm_bitset *bitset, int size)
+static inline void zend_mm_add_to_free_list(zend_mm_heap *heap, zend_mm_free_block *mm_block)
{
- int i = 0;
+ size_t size;
+ size_t index;
+
+ ZEND_MM_SET_MAGIC(mm_block, MEM_BLOCK_FREED);
+
+ size = ZEND_MM_FREE_BLOCK_SIZE(mm_block);
+ if (EXPECTED(!ZEND_MM_SMALL_SIZE(size))) {
+ zend_mm_free_block **p;
+
+ index = ZEND_MM_LARGE_BUCKET_INDEX(size);
+ p = &heap->large_free_buckets[index];
+ mm_block->child[0] = mm_block->child[1] = NULL;
+ if (!*p) {
+ *p = mm_block;
+ mm_block->parent = p;
+ mm_block->prev_free_block = mm_block->next_free_block = mm_block;
+ heap->large_free_bitmap |= (ZEND_MM_LONG_CONST(1) << index);
+ } else {
+ size_t m;
- do {
- zend_mm_bitset tmp = bitset[i];
- if (tmp != (zend_mm_bitset)-1) {
- return i * ZEND_MM_BITSET_LEN + zend_mm_bitset_nts(tmp);
- }
- i++;
- } while (i < size);
- return -1;
-}
+ for (m = size << (ZEND_MM_NUM_BUCKETS - index); ; m <<= 1) {
+ zend_mm_free_block *prev = *p;
-static zend_always_inline int zend_mm_bitset_find_one(zend_mm_bitset *bitset, int size)
-{
- int i = 0;
+ if (ZEND_MM_FREE_BLOCK_SIZE(prev) != size) {
+ p = &prev->child[(m >> (ZEND_MM_NUM_BUCKETS-1)) & 1];
+ if (!*p) {
+ *p = mm_block;
+ mm_block->parent = p;
+ mm_block->prev_free_block = mm_block->next_free_block = mm_block;
+ break;
+ }
+ } else {
+ zend_mm_free_block *next = prev->next_free_block;
- do {
- zend_mm_bitset tmp = bitset[i];
- if (tmp != 0) {
- return i * ZEND_MM_BITSET_LEN + zend_mm_bitset_ntz(tmp);
+ prev->next_free_block = next->prev_free_block = mm_block;
+ mm_block->next_free_block = next;
+ mm_block->prev_free_block = prev;
+ mm_block->parent = NULL;
+ break;
+ }
+ }
}
- i++;
- } while (i < size);
- return -1;
-}
+ } else {
+ zend_mm_free_block *prev, *next;
-static zend_always_inline int zend_mm_bitset_find_zero_and_set(zend_mm_bitset *bitset, int size)
-{
- int i = 0;
+ index = ZEND_MM_BUCKET_INDEX(size);
- do {
- zend_mm_bitset tmp = bitset[i];
- if (tmp != (zend_mm_bitset)-1) {
- int n = zend_mm_bitset_nts(tmp);
- bitset[i] |= 1 << n;
- return i * ZEND_MM_BITSET_LEN + n;
+ prev = ZEND_MM_SMALL_FREE_BUCKET(heap, index);
+ if (prev->prev_free_block == prev) {
+ heap->free_bitmap |= (ZEND_MM_LONG_CONST(1) << index);
}
- i++;
- } while (i < size);
- return -1;
+ next = prev->next_free_block;
+
+ mm_block->prev_free_block = prev;
+ mm_block->next_free_block = next;
+ prev->next_free_block = next->prev_free_block = mm_block;
+ }
}
-static zend_always_inline int zend_mm_bitset_is_set(zend_mm_bitset *bitset, int bit)
+static inline void zend_mm_remove_from_free_list(zend_mm_heap *heap, zend_mm_free_block *mm_block)
{
- return (bitset[bit / ZEND_MM_BITSET_LEN] & (1L << (bit & (ZEND_MM_BITSET_LEN-1)))) != 0;
-}
+ zend_mm_free_block *prev = mm_block->prev_free_block;
+ zend_mm_free_block *next = mm_block->next_free_block;
-static zend_always_inline void zend_mm_bitset_set_bit(zend_mm_bitset *bitset, int bit)
-{
- bitset[bit / ZEND_MM_BITSET_LEN] |= (1L << (bit & (ZEND_MM_BITSET_LEN-1)));
-}
+ ZEND_MM_CHECK_MAGIC(mm_block, MEM_BLOCK_FREED);
-static zend_always_inline void zend_mm_bitset_reset_bit(zend_mm_bitset *bitset, int bit)
-{
- bitset[bit / ZEND_MM_BITSET_LEN] &= ~(1L << (bit & (ZEND_MM_BITSET_LEN-1)));
-}
+ if (EXPECTED(prev == mm_block)) {
+ zend_mm_free_block **rp, **cp;
-static zend_always_inline void zend_mm_bitset_set_range(zend_mm_bitset *bitset, int start, int len)
-{
- if (len == 1) {
- zend_mm_bitset_set_bit(bitset, start);
- } else {
- int pos = start / ZEND_MM_BITSET_LEN;
- int end = (start + len - 1) / ZEND_MM_BITSET_LEN;
- int bit = start & (ZEND_MM_BITSET_LEN - 1);
- zend_mm_bitset tmp;
-
- if (pos != end) {
- /* set bits from "bit" to ZEND_MM_BITSET_LEN-1 */
- tmp = (zend_mm_bitset)-1 << bit;
- bitset[pos++] |= tmp;
- while (pos != end) {
- /* set all bits */
- bitset[pos++] = (zend_mm_bitset)-1;
- }
- end = (start + len - 1) & (ZEND_MM_BITSET_LEN - 1);
- /* set bits from "0" to "end" */
- tmp = (zend_mm_bitset)-1 >> ((ZEND_MM_BITSET_LEN - 1) - end);
- bitset[pos] |= tmp;
- } else {
- end = (start + len - 1) & (ZEND_MM_BITSET_LEN - 1);
- /* set bits from "bit" to "end" */
- tmp = (zend_mm_bitset)-1 << bit;
- tmp &= (zend_mm_bitset)-1 >> ((ZEND_MM_BITSET_LEN - 1) - end);
- bitset[pos] |= tmp;
+#if ZEND_MM_SAFE_UNLINKING
+ if (UNEXPECTED(next != mm_block)) {
+ zend_mm_panic("zend_mm_heap corrupted");
}
- }
-}
+#endif
-static zend_always_inline void zend_mm_bitset_reset_range(zend_mm_bitset *bitset, int start, int len)
-{
- if (len == 1) {
- zend_mm_bitset_reset_bit(bitset, start);
- } else {
- int pos = start / ZEND_MM_BITSET_LEN;
- int end = (start + len - 1) / ZEND_MM_BITSET_LEN;
- int bit = start & (ZEND_MM_BITSET_LEN - 1);
- zend_mm_bitset tmp;
-
- if (pos != end) {
- /* reset bits from "bit" to ZEND_MM_BITSET_LEN-1 */
- tmp = ~((1L << bit) - 1);
- bitset[pos++] &= ~tmp;
- while (pos != end) {
- /* set all bits */
- bitset[pos++] = 0;
- }
- end = (start + len - 1) & (ZEND_MM_BITSET_LEN - 1);
- /* reset bits from "0" to "end" */
- tmp = (zend_mm_bitset)-1 >> ((ZEND_MM_BITSET_LEN - 1) - end);
- bitset[pos] &= ~tmp;
+ rp = &mm_block->child[mm_block->child[1] != NULL];
+ prev = *rp;
+ if (EXPECTED(prev == NULL)) {
+ size_t index = ZEND_MM_LARGE_BUCKET_INDEX(ZEND_MM_FREE_BLOCK_SIZE(mm_block));
+
+ ZEND_MM_CHECK_TREE(mm_block);
+ *mm_block->parent = NULL;
+ if (mm_block->parent == &heap->large_free_buckets[index]) {
+ heap->large_free_bitmap &= ~(ZEND_MM_LONG_CONST(1) << index);
+ }
} else {
- end = (start + len - 1) & (ZEND_MM_BITSET_LEN - 1);
- /* reset bits from "bit" to "end" */
- tmp = (zend_mm_bitset)-1 << bit;
- tmp &= (zend_mm_bitset)-1 >> ((ZEND_MM_BITSET_LEN - 1) - end);
- bitset[pos] &= ~tmp;
+ while (*(cp = &(prev->child[prev->child[1] != NULL])) != NULL) {
+ prev = *cp;
+ rp = cp;
+ }
+ *rp = NULL;
+
+subst_block:
+ ZEND_MM_CHECK_TREE(mm_block);
+ *mm_block->parent = prev;
+ prev->parent = mm_block->parent;
+ if ((prev->child[0] = mm_block->child[0])) {
+ ZEND_MM_CHECK_TREE(prev->child[0]);
+ prev->child[0]->parent = &prev->child[0];
+ }
+ if ((prev->child[1] = mm_block->child[1])) {
+ ZEND_MM_CHECK_TREE(prev->child[1]);
+ prev->child[1]->parent = &prev->child[1];
+ }
}
- }
-}
-
-static zend_always_inline int zend_mm_bitset_is_free_range(zend_mm_bitset *bitset, int start, int len)
-{
- if (len == 1) {
- return !zend_mm_bitset_is_set(bitset, start);
} else {
- int pos = start / ZEND_MM_BITSET_LEN;
- int end = (start + len - 1) / ZEND_MM_BITSET_LEN;
- int bit = start & (ZEND_MM_BITSET_LEN - 1);
- zend_mm_bitset tmp;
-
- if (pos != end) {
- /* set bits from "bit" to ZEND_MM_BITSET_LEN-1 */
- tmp = (zend_mm_bitset)-1 << bit;
- if ((bitset[pos++] & tmp) != 0) {
- return 0;
- }
- while (pos != end) {
- /* set all bits */
- if (bitset[pos++] != 0) {
- return 0;
+
+#if ZEND_MM_SAFE_UNLINKING
+ if (UNEXPECTED(prev->next_free_block != mm_block) || UNEXPECTED(next->prev_free_block != mm_block)) {
+ zend_mm_panic("zend_mm_heap corrupted");
+ }
+#endif
+
+ prev->next_free_block = next;
+ next->prev_free_block = prev;
+
+ if (EXPECTED(ZEND_MM_SMALL_SIZE(ZEND_MM_FREE_BLOCK_SIZE(mm_block)))) {
+ if (EXPECTED(prev == next)) {
+ size_t index = ZEND_MM_BUCKET_INDEX(ZEND_MM_FREE_BLOCK_SIZE(mm_block));
+
+ if (EXPECTED(heap->free_buckets[index*2] == heap->free_buckets[index*2+1])) {
+ heap->free_bitmap &= ~(ZEND_MM_LONG_CONST(1) << index);
}
}
- end = (start + len - 1) & (ZEND_MM_BITSET_LEN - 1);
- /* set bits from "0" to "end" */
- tmp = (zend_mm_bitset)-1 >> ((ZEND_MM_BITSET_LEN - 1) - end);
- return (bitset[pos] & tmp) == 0;
- } else {
- end = (start + len - 1) & (ZEND_MM_BITSET_LEN - 1);
- /* set bits from "bit" to "end" */
- tmp = (zend_mm_bitset)-1 << bit;
- tmp &= (zend_mm_bitset)-1 >> ((ZEND_MM_BITSET_LEN - 1) - end);
- return (bitset[pos] & tmp) == 0;
+ } else if (UNEXPECTED(mm_block->parent == ZEND_MM_REST_BLOCK)) {
+ heap->rest_count--;
+ } else if (UNEXPECTED(mm_block->parent != NULL)) {
+ goto subst_block;
}
}
}
-/**********/
-/* Chunks */
-/**********/
-
-static void *zend_mm_chunk_alloc(size_t size, size_t alignment)
+static inline void zend_mm_add_to_rest_list(zend_mm_heap *heap, zend_mm_free_block *mm_block)
{
- void *ptr = zend_mm_mmap(size);
+ zend_mm_free_block *prev, *next;
- if (ptr == NULL) {
- return NULL;
- } else if (ZEND_MM_ALIGNED_OFFSET(ptr, alignment) == 0) {
-#ifdef MADV_HUGEPAGE
-// madvise(ptr, size, MADV_HUGEPAGE);
-#endif
- return ptr;
- } else {
- size_t offset;
-
- /* chunk has to be aligned */
- zend_mm_munmap(ptr, size);
- ptr = zend_mm_mmap(size + alignment - ZEND_MM_PAGE_SIZE);
-#ifdef _WIN32
- offset = ZEND_MM_ALIGNED_OFFSET(ptr, alignment);
- zend_mm_munmap(ptr, size + alignment - ZEND_MM_PAGE_SIZE);
- ptr = zend_mm_mmap_fixed((void*)((char*)ptr + (alignment - offset)), size);
- offset = ZEND_MM_ALIGNED_OFFSET(ptr, alignment);
- if (offset != 0) {
- zend_mm_munmap(ptr, size);
- return NULL;
- }
- return ptr;
-#else
- offset = ZEND_MM_ALIGNED_OFFSET(ptr, alignment);
- if (offset != 0) {
- offset = alignment - offset;
- zend_mm_munmap(ptr, offset);
- ptr = (char*)ptr + offset;
- } else {
- zend_mm_munmap((char*)ptr + size, alignment - ZEND_MM_PAGE_SIZE);
+ while (heap->rest_count >= ZEND_MM_MAX_REST_BLOCKS) {
+ zend_mm_free_block *p = heap->rest_buckets[1];
+
+ if (!ZEND_MM_SMALL_SIZE(ZEND_MM_FREE_BLOCK_SIZE(p))) {
+ heap->rest_count--;
}
-# ifdef MADV_HUGEPAGE
-// madvise(ptr, size, MADV_HUGEPAGE);
-# endif
-#endif
- return ptr;
+ prev = p->prev_free_block;
+ next = p->next_free_block;
+ prev->next_free_block = next;
+ next->prev_free_block = prev;
+ zend_mm_add_to_free_list(heap, p);
}
+
+ if (!ZEND_MM_SMALL_SIZE(ZEND_MM_FREE_BLOCK_SIZE(mm_block))) {
+ mm_block->parent = ZEND_MM_REST_BLOCK;
+ heap->rest_count++;
+ }
+
+ ZEND_MM_SET_MAGIC(mm_block, MEM_BLOCK_FREED);
+
+ prev = heap->rest_buckets[0];
+ next = prev->next_free_block;
+ mm_block->prev_free_block = prev;
+ mm_block->next_free_block = next;
+ prev->next_free_block = next->prev_free_block = mm_block;
}
-static zend_always_inline void zend_mm_chunk_init(zend_mm_heap *heap, zend_mm_chunk *chunk)
+static inline void zend_mm_init(zend_mm_heap *heap)
{
- chunk->heap = heap;
- chunk->next = heap->main_chunk;
- chunk->prev = heap->main_chunk->prev;
- chunk->prev->next = chunk;
- chunk->next->prev = chunk;
- /* mark first pages as allocated */
- chunk->free_pages = ZEND_MM_PAGES - ZEND_MM_FIRST_PAGE;
- chunk->free_tail = ZEND_MM_FIRST_PAGE;
- /* the younger chunks have bigger number */
- chunk->num = chunk->prev->num + 1;
-#if ZEND_DEBUG && defined(ZTS)
- chunk->thread_id = tsrm_thread_id();
+ zend_mm_free_block* p;
+ int i;
+
+ heap->free_bitmap = 0;
+ heap->large_free_bitmap = 0;
+#if ZEND_MM_CACHE
+ heap->cached = 0;
+ memset(heap->cache, 0, sizeof(heap->cache));
+#endif
+#if ZEND_MM_CACHE_STAT
+ for (i = 0; i < ZEND_MM_NUM_BUCKETS; i++) {
+ heap->cache_stat[i].count = 0;
+ }
#endif
- /* mark first pages as allocated */
- chunk->free_map[0] = (1L << ZEND_MM_FIRST_PAGE) - 1;
- chunk->map[0] = ZEND_MM_LRUN(ZEND_MM_FIRST_PAGE);
+ p = ZEND_MM_SMALL_FREE_BUCKET(heap, 0);
+ for (i = 0; i < ZEND_MM_NUM_BUCKETS; i++) {
+ p->next_free_block = p;
+ p->prev_free_block = p;
+ p = (zend_mm_free_block*)((char*)p + sizeof(zend_mm_free_block*) * 2);
+ heap->large_free_buckets[i] = NULL;
+ }
+ heap->rest_buckets[0] = heap->rest_buckets[1] = ZEND_MM_REST_BUCKET(heap);
+ heap->rest_count = 0;
}
-/***********************/
-/* Huge Runs (forward) */
-/***********************/
+static void zend_mm_del_segment(zend_mm_heap *heap, zend_mm_segment *segment)
+{
+ zend_mm_segment **p = &heap->segments_list;
-static size_t zend_mm_get_huge_block_size(zend_mm_heap *heap, void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
-static void *zend_mm_alloc_huge(zend_mm_heap *heap, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
-static void zend_mm_free_huge(zend_mm_heap *heap, void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
+ while (*p != segment) {
+ p = &(*p)->next_segment;
+ }
+ *p = segment->next_segment;
+ heap->real_size -= segment->size;
+ ZEND_MM_STORAGE_FREE(segment);
+}
-#if ZEND_DEBUG
-static void zend_mm_change_huge_block_size(zend_mm_heap *heap, void *ptr, size_t size, size_t dbg_size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
-#else
-static void zend_mm_change_huge_block_size(zend_mm_heap *heap, void *ptr, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC);
-#endif
+#if ZEND_MM_CACHE
+static void zend_mm_free_cache(zend_mm_heap *heap)
+{
+ int i;
-/**************/
-/* Large Runs */
-/**************/
+ for (i = 0; i < ZEND_MM_NUM_BUCKETS; i++) {
+ if (heap->cache[i]) {
+ zend_mm_free_block *mm_block = heap->cache[i];
-#if ZEND_DEBUG
-static void *zend_mm_alloc_pages(zend_mm_heap *heap, int pages_count, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
-#else
-static void *zend_mm_alloc_pages(zend_mm_heap *heap, int pages_count ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
-#endif
-{
- zend_mm_chunk *chunk = heap->main_chunk;
- int page_num, len;
+ while (mm_block) {
+ size_t size = ZEND_MM_BLOCK_SIZE(mm_block);
+ zend_mm_free_block *q = mm_block->prev_free_block;
+ zend_mm_block *next_block = ZEND_MM_NEXT_BLOCK(mm_block);
- while (1) {
- if (UNEXPECTED(chunk->free_pages < pages_count)) {
- goto not_found;
-#if 0
- } else if (UNEXPECTED(chunk->free_pages + chunk->free_tail == ZEND_MM_PAGES)) {
- if (UNEXPECTED(ZEND_MM_PAGES - chunk->free_tail < pages_count)) {
- goto not_found;
- } else {
- page_num = chunk->free_tail;
- goto found;
- }
- } else if (0) {
- /* First-Fit Search */
- int free_tail = chunk->free_tail;
- zend_mm_bitset *bitset = chunk->free_map;
- zend_mm_bitset tmp = *(bitset++);
- int i = 0;
+ heap->cached -= size;
- while (1) {
- /* skip allocated blocks */
- while (tmp == (zend_mm_bitset)-1) {
- i += ZEND_MM_BITSET_LEN;
- if (i == ZEND_MM_PAGES) {
- goto not_found;
- }
- tmp = *(bitset++);
+ if (ZEND_MM_PREV_BLOCK_IS_FREE(mm_block)) {
+ mm_block = (zend_mm_free_block*)ZEND_MM_PREV_BLOCK(mm_block);
+ size += ZEND_MM_FREE_BLOCK_SIZE(mm_block);
+ zend_mm_remove_from_free_list(heap, (zend_mm_free_block *) mm_block);
}
- /* find first 0 bit */
- page_num = i + zend_mm_bitset_nts(tmp);
- /* reset bits from 0 to "bit" */
- tmp &= tmp + 1;
- /* skip free blocks */
- while (tmp == 0) {
- i += ZEND_MM_BITSET_LEN;
- len = i - page_num;
- if (len >= pages_count) {
- goto found;
- } else if (i >= free_tail) {
- goto not_found;
- }
- tmp = *(bitset++);
- }
- /* find first 1 bit */
- len = (i + zend_mm_bitset_ntz(tmp)) - page_num;
- if (len >= pages_count) {
- goto found;
+ if (ZEND_MM_IS_FREE_BLOCK(next_block)) {
+ size += ZEND_MM_FREE_BLOCK_SIZE(next_block);
+ zend_mm_remove_from_free_list(heap, (zend_mm_free_block *) next_block);
}
- /* set bits from 0 to "bit" */
- tmp |= tmp - 1;
- }
-#endif
- } else {
- /* Best-Fit Search */
- int best = -1;
- int best_len = ZEND_MM_PAGES;
- int free_tail = chunk->free_tail;
- zend_mm_bitset *bitset = chunk->free_map;
- zend_mm_bitset tmp = *(bitset++);
- int i = 0;
+ ZEND_MM_BLOCK(mm_block, ZEND_MM_FREE_BLOCK, size);
- while (1) {
- /* skip allocated blocks */
- while (tmp == (zend_mm_bitset)-1) {
- i += ZEND_MM_BITSET_LEN;
- if (i == ZEND_MM_PAGES) {
- if (best > 0) {
- page_num = best;
- goto found;
- } else {
- goto not_found;
- }
- }
- tmp = *(bitset++);
- }
- /* find first 0 bit */
- page_num = i + zend_mm_bitset_nts(tmp);
- /* reset bits from 0 to "bit" */
- tmp &= tmp + 1;
- /* skip free blocks */
- while (tmp == 0) {
- i += ZEND_MM_BITSET_LEN;
- if (i >= free_tail) {
- len = ZEND_MM_PAGES - page_num;
- if (len >= pages_count && len < best_len) {
- chunk->free_tail = page_num + pages_count;
- goto found;
- } else {
- /* set accurate value */
- chunk->free_tail = page_num;
- if (best > 0) {
- page_num = best;
- goto found;
- } else {
- goto not_found;
- }
- }
- }
- tmp = *(bitset++);
+ if (ZEND_MM_IS_FIRST_BLOCK(mm_block) &&
+ ZEND_MM_IS_GUARD_BLOCK(ZEND_MM_NEXT_BLOCK(mm_block))) {
+ zend_mm_del_segment(heap, (zend_mm_segment *) ((char *)mm_block - ZEND_MM_ALIGNED_SEGMENT_SIZE));
+ } else {
+ zend_mm_add_to_free_list(heap, (zend_mm_free_block *) mm_block);
}
- /* find first 1 bit */
- len = i + zend_mm_bitset_ntz(tmp) - page_num;
- if (len >= pages_count) {
- if (len == pages_count) {
- goto found;
- } else if (len < best_len) {
- best_len = len;
- best = page_num;
- }
- }
- /* set bits from 0 to "bit" */
- tmp |= tmp - 1;
- }
- }
-not_found:
- if (chunk->next == heap->main_chunk) {
- if (heap->cached_chunks) {
- heap->cached_chunks_count--;
- chunk = heap->cached_chunks;
- heap->cached_chunks = chunk->next;
- } else {
-#if ZEND_MM_LIMIT
- if (heap->real_size + ZEND_MM_CHUNK_SIZE > heap->limit) {
- if (heap->overflow == 0) {
-#if ZEND_DEBUG
- zend_mm_safe_error(heap, "Allowed memory size of %ld bytes exhausted at %s:%d (tried to allocate %lu bytes)", heap->limit, __zend_filename, __zend_lineno, size);
-#else
- zend_mm_safe_error(heap, "Allowed memory size of %ld bytes exhausted (tried to allocate %lu bytes)", heap->limit, ZEND_MM_PAGE_SIZE * pages_count);
-#endif
- return NULL;
- }
- }
-#endif
- chunk = (zend_mm_chunk*)zend_mm_chunk_alloc(ZEND_MM_CHUNK_SIZE, ZEND_MM_CHUNK_SIZE);
- if (UNEXPECTED(chunk == NULL)) {
- /* insufficient memory */
- return NULL;
- }
-#if ZEND_MM_STAT || ZEND_MM_LIMIT
- heap->real_size += ZEND_MM_CHUNK_SIZE;
-#endif
-#if ZEND_MM_STAT
- if (heap->real_size > heap->real_peak) {
- heap->real_peak = heap->real_size;
- }
-#endif
- }
- heap->chunks_count++;
- if (heap->chunks_count > heap->peak_chunks_count) {
- heap->peak_chunks_count = heap->chunks_count;
+ mm_block = q;
}
- zend_mm_chunk_init(heap, chunk);
- page_num = ZEND_MM_FIRST_PAGE;
- len = ZEND_MM_PAGES - ZEND_MM_FIRST_PAGE;
- goto found;
- } else {
- chunk = chunk->next;
+ heap->cache[i] = NULL;
+#if ZEND_MM_CACHE_STAT
+ heap->cache_stat[i].count = 0;
+#endif
}
}
-
-found:
- /* mark run as allocated */
- chunk->free_pages -= pages_count;
- zend_mm_bitset_set_range(chunk->free_map, page_num, pages_count);
- chunk->map[page_num] = ZEND_MM_LRUN(pages_count);
- if (page_num == chunk->free_tail) {
- chunk->free_tail = page_num + pages_count;
- }
- return ZEND_MM_PAGE_ADDR(chunk, page_num);
}
-
-static zend_always_inline void *zend_mm_alloc_large(zend_mm_heap *heap, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
-{
- int pages_count = ZEND_MM_SIZE_TO_NUM(size, ZEND_MM_PAGE_SIZE);
-#if ZEND_DEBUG
- void *ptr = zend_mm_alloc_pages(heap, pages_count, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
-#else
- void *ptr = zend_mm_alloc_pages(heap, pages_count ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
-#endif
-#if ZEND_MM_STAT
- heap->size += pages_count * ZEND_MM_PAGE_SIZE;
- if (UNEXPECTED(heap->size > heap->peak)) {
- heap->peak = heap->size;
- }
#endif
- return ptr;
-}
-static void zend_mm_free_pages(zend_mm_heap *heap, zend_mm_chunk *chunk, int page_num, int pages_count)
+#if ZEND_MM_HEAP_PROTECTION || ZEND_MM_COOKIES
+static void zend_mm_random(unsigned char *buf, size_t size) /* {{{ */
{
- chunk->free_pages += pages_count;
- if (chunk->free_pages == ZEND_MM_PAGES - ZEND_MM_FIRST_PAGE) {
- /* delete chunk */
- chunk->next->prev = chunk->prev;
- chunk->prev->next = chunk->next;
- heap->chunks_count--;
- if (heap->chunks_count + heap->cached_chunks_count < heap->avg_chunks_count + 0.1) {
- /* delay deletion */
- heap->cached_chunks_count++;
- chunk->next = heap->cached_chunks;
- heap->cached_chunks = chunk;
- } else {
-#if ZEND_MM_STAT || ZEND_MM_LIMIT
- heap->real_size -= ZEND_MM_CHUNK_SIZE;
-#endif
- if (!heap->cached_chunks || chunk->num > heap->cached_chunks->num) {
- zend_mm_munmap(chunk, ZEND_MM_CHUNK_SIZE);
- } else {
-//TODO: select the best chunk to delete???
- chunk->next = heap->cached_chunks->next;
- zend_mm_munmap(heap->cached_chunks, ZEND_MM_CHUNK_SIZE);
- heap->cached_chunks = chunk;
+ size_t i = 0;
+ unsigned char t;
+
+#ifdef ZEND_WIN32
+ HCRYPTPROV hCryptProv;
+ int has_context = 0;
+
+ if (!CryptAcquireContext(&hCryptProv, NULL, NULL, PROV_RSA_FULL, 0)) {
+ /* Could mean that the key container does not exist, let try
+ again by asking for a new one */
+ if (GetLastError() == NTE_BAD_KEYSET) {
+ if (CryptAcquireContext(&hCryptProv, NULL, NULL, PROV_RSA_FULL, CRYPT_NEWKEYSET)) {
+ has_context = 1;
}
}
} else {
- zend_mm_bitset_reset_range(chunk->free_map, page_num, pages_count);
- chunk->map[page_num] = 0;
- if (chunk->free_tail == page_num + pages_count) {
- /* this setting may be not accurate */
- chunk->free_tail = page_num;
- }
+ has_context = 1;
}
-}
-
-static zend_always_inline void zend_mm_free_large(zend_mm_heap *heap, zend_mm_chunk *chunk, int page_num, int pages_count)
-{
-#if ZEND_MM_STAT
- heap->size -= pages_count * ZEND_MM_PAGE_SIZE;
-#endif
- zend_mm_free_pages(heap, chunk, page_num, pages_count);
-}
-
-/**************/
-/* Small Runs */
-/**************/
-
-/* separating the following function allows saving 2 instructions on x86
- * on the fast patch - register save/restore in prologue/epilogue
- */
-static zend_never_inline void zend_mm_small_run_got_free(zend_mm_heap *heap, int bin_num, zend_mm_bin *bin)
-{
- zend_mm_chunk *chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(bin, ZEND_MM_CHUNK_SIZE);
- int page_num = ZEND_MM_ALIGNED_OFFSET(bin, ZEND_MM_CHUNK_SIZE) / ZEND_MM_PAGE_SIZE;
- zend_mm_bin *cached_bin = heap->cache[bin_num];
-
- /* mark this run as available for allocation of small blocks */
- zend_mm_bitset_set_bit(chunk->small_map[bin_num], page_num);
+ if (has_context) {
+ do {
+ BOOL ret = CryptGenRandom(hCryptProv, size, buf);
+ CryptReleaseContext(hCryptProv, 0);
+ if (ret) {
+ while (i < size && buf[i] != 0) {
+ i++;
+ }
+ if (i == size) {
+ return;
+ }
+ }
+ } while (0);
+ }
+#elif defined(HAVE_DEV_URANDOM)
+ int fd = open("/dev/urandom", 0);
- /* put this run into cache if it's lower then the currently cached one */
- if (EXPECTED(cached_bin)) {
- zend_mm_chunk *cached_chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(cached_bin, ZEND_MM_CHUNK_SIZE);
- if (EXPECTED(chunk == cached_chunk)) {
- if (EXPECTED(bin < cached_bin)) {
- goto cache_this_bin;
+ if (fd >= 0) {
+ if (read(fd, buf, size) == size) {
+ while (i < size && buf[i] != 0) {
+ i++;
+ }
+ if (i == size) {
+ close(fd);
+ return;
}
- } else if (EXPECTED(chunk->num < cached_chunk->num)) {
- goto cache_this_bin;
}
- } else {
-cache_this_bin:
- heap->cache[bin_num] = bin;
+ close(fd);
}
+#endif
+ t = (unsigned char)getpid();
+ while (i < size) {
+ do {
+ buf[i] = ((unsigned char)rand()) ^ t;
+ } while (buf[i] == 0);
+ t = buf[i++] << 1;
+ }
}
+/* }}} */
+#endif
-static zend_always_inline void zend_mm_small_run_became_full(zend_mm_heap *heap, int bin_num, zend_mm_bin *bin)
+/* Notes:
+ * - This function may alter the block_sizes values to match platform alignment
+ * - This function does *not* perform sanity checks on the arguments
+ */
+ZEND_API zend_mm_heap *zend_mm_startup_ex(const zend_mm_mem_handlers *handlers, size_t block_size, size_t reserve_size, int internal, void *params)
{
- zend_mm_chunk *chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(bin, ZEND_MM_CHUNK_SIZE);
- int page_num = ZEND_MM_ALIGNED_OFFSET(bin, ZEND_MM_CHUNK_SIZE) / ZEND_MM_PAGE_SIZE;
-
- zend_mm_bitset_reset_bit(chunk->small_map[bin_num], page_num);
- heap->cache[bin_num] = NULL;
-}
+ zend_mm_storage *storage;
+ zend_mm_heap *heap;
-static zend_always_inline void *zend_mm_alloc_small_list_init(zend_mm_chunk *chunk, int bin_num, int page_num, zend_mm_bin *bin)
-{
- int i, n;
- zend_mm_free_list *p;
+#if 0
+ int i;
- chunk->map[page_num] = ZEND_MM_SRUN(bin_num);
+ printf("ZEND_MM_ALIGNMENT=%d\n", ZEND_MM_ALIGNMENT);
+ printf("ZEND_MM_ALIGNMENT_LOG2=%d\n", ZEND_MM_ALIGNMENT_LOG2);
+ printf("ZEND_MM_MIN_SIZE=%d\n", ZEND_MM_MIN_SIZE);
+ printf("ZEND_MM_MAX_SMALL_SIZE=%d\n", ZEND_MM_MAX_SMALL_SIZE);
+ printf("ZEND_MM_ALIGNED_HEADER_SIZE=%d\n", ZEND_MM_ALIGNED_HEADER_SIZE);
+ printf("ZEND_MM_ALIGNED_FREE_HEADER_SIZE=%d\n", ZEND_MM_ALIGNED_FREE_HEADER_SIZE);
+ printf("ZEND_MM_MIN_ALLOC_BLOCK_SIZE=%d\n", ZEND_MM_MIN_ALLOC_BLOCK_SIZE);
+ printf("ZEND_MM_ALIGNED_MIN_HEADER_SIZE=%d\n", ZEND_MM_ALIGNED_MIN_HEADER_SIZE);
+ printf("ZEND_MM_ALIGNED_SEGMENT_SIZE=%d\n", ZEND_MM_ALIGNED_SEGMENT_SIZE);
+ for (i = 0; i < ZEND_MM_MAX_SMALL_SIZE; i++) {
+ printf("%3d%c: %3ld %d %2ld\n", i, (i == ZEND_MM_MIN_SIZE?'*':' '), (long)ZEND_MM_TRUE_SIZE(i), ZEND_MM_SMALL_SIZE(ZEND_MM_TRUE_SIZE(i)), (long)ZEND_MM_BUCKET_INDEX(ZEND_MM_TRUE_SIZE(i)));
+ }
+ exit(0);
+#endif
- /* create a linked list of elements from 1 to last */
- i = bin_data_offset[bin_num] + bin_data_size[bin_num];
- n = bin_data_offset[bin_num] + (bin_elements[bin_num] - 1) * bin_data_size[bin_num];
- bin->next_free = i;
- p = (zend_mm_free_list*)((char*)bin + i);
- do {
- i += bin_data_size[bin_num];
- p->next_free = i;
-#if ZEND_DEBUG
- do {
- zend_mm_debug_info *dbg = (zend_mm_debug_info*)((char*)p + bin_data_size[bin_num] - ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
- dbg->size = 0;
- } while (0);
+#if ZEND_MM_HEAP_PROTECTION
+ if (_mem_block_start_magic == 0) {
+ zend_mm_random((unsigned char*)&_mem_block_start_magic, sizeof(_mem_block_start_magic));
+ }
+ if (_mem_block_end_magic == 0) {
+ zend_mm_random((unsigned char*)&_mem_block_end_magic, sizeof(_mem_block_end_magic));
+ }
+#endif
+#if ZEND_MM_COOKIES
+ if (_zend_mm_cookie == 0) {
+ zend_mm_random((unsigned char*)&_zend_mm_cookie, sizeof(_zend_mm_cookie));
+ }
#endif
- p = (zend_mm_free_list*)((char*)p + bin_data_size[bin_num]);
- } while (i != n);
- p->next_free = ZEND_MM_FREE_LIST_END;
- bin->num_used = 1;
+ if (zend_mm_low_bit(block_size) != zend_mm_high_bit(block_size)) {
+ fprintf(stderr, "'block_size' must be a power of two\n");
+/* See http://support.microsoft.com/kb/190351 */
+#ifdef PHP_WIN32
+ fflush(stderr);
+#endif
+ exit(255);
+ }
+ storage = handlers->init(params);
+ if (!storage) {
+ fprintf(stderr, "Cannot initialize zend_mm storage [%s]\n", handlers->name);
+/* See http://support.microsoft.com/kb/190351 */
+#ifdef PHP_WIN32
+ fflush(stderr);
+#endif
+ exit(255);
+ }
+ storage->handlers = handlers;
- /* return first element */
- return (char*)bin + bin_data_offset[bin_num];
-}
+ heap = malloc(sizeof(struct _zend_mm_heap));
+ if (heap == NULL) {
+ fprintf(stderr, "Cannot allocate heap for zend_mm storage [%s]\n", handlers->name);
+#ifdef PHP_WIN32
+ fflush(stderr);
+#endif
+ exit(255);
+ }
+ heap->storage = storage;
+ heap->block_size = block_size;
+ heap->compact_size = 0;
+ heap->segments_list = NULL;
+ zend_mm_init(heap);
+# if ZEND_MM_CACHE_STAT
+ memset(heap->cache_stat, 0, sizeof(heap->cache_stat));
+# endif
-static zend_always_inline void *zend_mm_alloc_small_list(zend_mm_heap *heap, int bin_num, zend_mm_bin *bin)
-{
- void *ptr = (char*)bin + bin->next_free;
+ heap->use_zend_alloc = 1;
+ heap->real_size = 0;
+ heap->overflow = 0;
+ heap->real_peak = 0;
+ heap->limit = ZEND_MM_LONG_CONST(1)<<(ZEND_MM_NUM_BUCKETS-2);
+ heap->size = 0;
+ heap->peak = 0;
+ heap->internal = internal;
+ heap->reserve = NULL;
+ heap->reserve_size = reserve_size;
+ if (reserve_size > 0) {
+ heap->reserve = _zend_mm_alloc_int(heap, reserve_size ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC);
+ }
+ if (internal) {
+ int i;
+ zend_mm_free_block *p, *q, *orig;
+ zend_mm_heap *mm_heap = _zend_mm_alloc_int(heap, sizeof(zend_mm_heap) ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC);
+
+ *mm_heap = *heap;
+
+ p = ZEND_MM_SMALL_FREE_BUCKET(mm_heap, 0);
+ orig = ZEND_MM_SMALL_FREE_BUCKET(heap, 0);
+ for (i = 0; i < ZEND_MM_NUM_BUCKETS; i++) {
+ q = p;
+ while (q->prev_free_block != orig) {
+ q = q->prev_free_block;
+ }
+ q->prev_free_block = p;
+ q = p;
+ while (q->next_free_block != orig) {
+ q = q->next_free_block;
+ }
+ q->next_free_block = p;
+ p = (zend_mm_free_block*)((char*)p + sizeof(zend_mm_free_block*) * 2);
+ orig = (zend_mm_free_block*)((char*)orig + sizeof(zend_mm_free_block*) * 2);
+ if (mm_heap->large_free_buckets[i]) {
+ mm_heap->large_free_buckets[i]->parent = &mm_heap->large_free_buckets[i];
+ }
+ }
+ mm_heap->rest_buckets[0] = mm_heap->rest_buckets[1] = ZEND_MM_REST_BUCKET(mm_heap);
+ mm_heap->rest_count = 0;
- bin->next_free = ((zend_mm_free_list*)ptr)->next_free;
- bin->num_used++;
- if (UNEXPECTED(bin->next_free == ZEND_MM_FREE_LIST_END)) {
- /* run became full */
- zend_mm_small_run_became_full(heap, bin_num, bin);
+ free(heap);
+ heap = mm_heap;
}
- return ptr;
+ return heap;
}
-static zend_always_inline int zend_mm_free_small_list(zend_mm_heap *heap, int bin_num, zend_mm_bin *bin, void *ptr)
+ZEND_API zend_mm_heap *zend_mm_startup(void)
{
- int old_next_free = bin->next_free;
+ int i;
+ size_t seg_size;
+ char *mem_type = getenv("ZEND_MM_MEM_TYPE");
+ char *tmp;
+ const zend_mm_mem_handlers *handlers;
+ zend_mm_heap *heap;
-#if ZEND_DEBUG
- do {
- zend_mm_debug_info *dbg = (zend_mm_debug_info*)((char*)ptr + bin_data_size[bin_num] - ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
- dbg->size = 0;
- } while (0);
+ if (mem_type == NULL) {
+ i = 0;
+ } else {
+ for (i = 0; mem_handlers[i].name; i++) {
+ if (strcmp(mem_handlers[i].name, mem_type) == 0) {
+ break;
+ }
+ }
+ if (!mem_handlers[i].name) {
+ fprintf(stderr, "Wrong or unsupported zend_mm storage type '%s'\n", mem_type);
+ fprintf(stderr, " supported types:\n");
+/* See http://support.microsoft.com/kb/190351 */
+#ifdef PHP_WIN32
+ fflush(stderr);
#endif
-
- ((zend_mm_free_list*)ptr)->next_free = old_next_free;
- bin->next_free = (char*)ptr - (char*)bin;
-
- bin->num_used--;
- if (UNEXPECTED(bin->num_used == 0)) {
- /* run became free */
- return 1;
+ for (i = 0; mem_handlers[i].name; i++) {
+ fprintf(stderr, " '%s'\n", mem_handlers[i].name);
+ }
+/* See http://support.microsoft.com/kb/190351 */
+#ifdef PHP_WIN32
+ fflush(stderr);
+#endif
+ exit(255);
+ }
}
- if (UNEXPECTED(old_next_free == ZEND_MM_FREE_LIST_END)) {
- /* run was completely full */
- zend_mm_small_run_got_free(heap, bin_num, bin);
+ handlers = &mem_handlers[i];
+
+ tmp = getenv("ZEND_MM_SEG_SIZE");
+ if (tmp) {
+ seg_size = zend_atoi(tmp, 0);
+ if (zend_mm_low_bit(seg_size) != zend_mm_high_bit(seg_size)) {
+ fprintf(stderr, "ZEND_MM_SEG_SIZE must be a power of two\n");
+/* See http://support.microsoft.com/kb/190351 */
+#ifdef PHP_WIN32
+ fflush(stderr);
+#endif
+ exit(255);
+ } else if (seg_size < ZEND_MM_ALIGNED_SEGMENT_SIZE + ZEND_MM_ALIGNED_HEADER_SIZE) {
+ fprintf(stderr, "ZEND_MM_SEG_SIZE is too small\n");
+/* See http://support.microsoft.com/kb/190351 */
+#ifdef PHP_WIN32
+ fflush(stderr);
+#endif
+ exit(255);
+ }
+ } else {
+ seg_size = ZEND_MM_SEG_SIZE;
}
- return 0;
-}
-static zend_always_inline void *zend_mm_alloc_small_subpage_init(zend_mm_chunk *chunk, int bin_num, int page_num, zend_mm_bin *bin)
-{
- chunk->map[page_num] = ZEND_MM_SRUN_BITSET_SET(bin_num, 1);
- return (void*)bin;
+ heap = zend_mm_startup_ex(handlers, seg_size, ZEND_MM_RESERVE_SIZE, 0, NULL);
+ if (heap) {
+ tmp = getenv("ZEND_MM_COMPACT");
+ if (tmp) {
+ heap->compact_size = zend_atoi(tmp, 0);
+ } else {
+ heap->compact_size = 2 * 1024 * 1024;
+ }
+ }
+ return heap;
}
-static zend_always_inline void *zend_mm_alloc_small_subpage(zend_mm_heap *heap, int bin_num, zend_mm_bin *bin)
+#if ZEND_DEBUG
+static long zend_mm_find_leaks(zend_mm_segment *segment, zend_mm_block *b)
{
- zend_mm_chunk *chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(bin, ZEND_MM_CHUNK_SIZE);
- int page_num = ZEND_MM_ALIGNED_OFFSET(bin, ZEND_MM_CHUNK_SIZE) / ZEND_MM_PAGE_SIZE;
- zend_mm_page_info info = chunk->map[page_num];
- zend_mm_page_info bitset = ZEND_MM_SRUN_BITSET(info);
- int element_num = zend_mm_bitset_nts(bitset);
+ long leaks = 0;
+ zend_mm_block *p, *q;
- /* set the right zero bit */
- bitset = bitset | (bitset + 1);
- chunk->map[page_num] = ZEND_MM_SRUN_BITSET_UPDATE(info, bitset);
- if (UNEXPECTED((1 << (bin_elements[bin_num])) - 1 == bitset)) {
- /* run became full */
- zend_mm_small_run_became_full(heap, bin_num, bin);
+ p = ZEND_MM_NEXT_BLOCK(b);
+ while (1) {
+ if (ZEND_MM_IS_GUARD_BLOCK(p)) {
+ ZEND_MM_CHECK_MAGIC(p, MEM_BLOCK_GUARD);
+ segment = segment->next_segment;
+ if (!segment) {
+ break;
+ }
+ p = (zend_mm_block *) ((char *) segment + ZEND_MM_ALIGNED_SEGMENT_SIZE);
+ continue;
+ }
+ q = ZEND_MM_NEXT_BLOCK(p);
+ if (q <= p ||
+ (char*)q > (char*)segment + segment->size ||
+ p->info._size != q->info._prev) {
+ zend_mm_panic("zend_mm_heap corrupted");
+ }
+ if (!ZEND_MM_IS_FREE_BLOCK(p)) {
+ if (p->magic == MEM_BLOCK_VALID) {
+ if (p->debug.filename==b->debug.filename && p->debug.lineno==b->debug.lineno) {
+ ZEND_MM_SET_MAGIC(p, MEM_BLOCK_LEAK);
+ leaks++;
+ }
+#if ZEND_MM_CACHE
+ } else if (p->magic == MEM_BLOCK_CACHED) {
+ /* skip it */
+#endif
+ } else if (p->magic != MEM_BLOCK_LEAK) {
+ zend_mm_panic("zend_mm_heap corrupted");
+ }
+ }
+ p = q;
}
- return (char*)bin + element_num * bin_data_size[bin_num];
+ return leaks;
}
-static zend_always_inline int zend_mm_free_small_subpage(zend_mm_heap *heap, int bin_num, zend_mm_bin *bin, int element_num)
+static void zend_mm_check_leaks(zend_mm_heap *heap TSRMLS_DC)
{
- zend_mm_chunk *chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(bin, ZEND_MM_CHUNK_SIZE);
- int page_num = ZEND_MM_ALIGNED_OFFSET(bin, ZEND_MM_CHUNK_SIZE) / ZEND_MM_PAGE_SIZE;
+ zend_mm_segment *segment = heap->segments_list;
+ zend_mm_block *p, *q;
+ zend_uint total = 0;
- if (UNEXPECTED((1 << bin_elements[bin_num]) - 1 == ZEND_MM_SRUN_BITSET(chunk->map[page_num]))) {
- /* run was completely full */
- zend_mm_small_run_got_free(heap, bin_num, bin);
+ if (!segment) {
+ return;
}
- chunk->map[page_num] = ZEND_MM_SRUN_BITSET_EXCL(chunk->map[page_num], element_num);
- return (ZEND_MM_SRUN_BITSET(chunk->map[page_num]) == 0);
-}
-
-static zend_never_inline void *zend_mm_alloc_small_slow(zend_mm_heap *heap, int bin_num ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
-{
- zend_mm_chunk *chunk;
- int page_num;
- zend_mm_bin *bin;
-
-#if ZEND_DEBUG
- bin = (zend_mm_bin*)zend_mm_alloc_pages(heap, bin_pages[bin_num], bin_data_size[bin_num] ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
-#else
- bin = (zend_mm_bin*)zend_mm_alloc_pages(heap, bin_pages[bin_num] ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ p = (zend_mm_block *) ((char *) segment + ZEND_MM_ALIGNED_SEGMENT_SIZE);
+ while (1) {
+ q = ZEND_MM_NEXT_BLOCK(p);
+ if (q <= p ||
+ (char*)q > (char*)segment + segment->size ||
+ p->info._size != q->info._prev) {
+ zend_mm_panic("zend_mm_heap corrupted");
+ }
+ if (!ZEND_MM_IS_FREE_BLOCK(p)) {
+ if (p->magic == MEM_BLOCK_VALID) {
+ long repeated;
+ zend_leak_info leak;
+
+ ZEND_MM_SET_MAGIC(p, MEM_BLOCK_LEAK);
+
+ leak.addr = ZEND_MM_DATA_OF(p);
+ leak.size = p->debug.size;
+ leak.filename = p->debug.filename;
+ leak.lineno = p->debug.lineno;
+ leak.orig_filename = p->debug.orig_filename;
+ leak.orig_lineno = p->debug.orig_lineno;
+
+ zend_message_dispatcher(ZMSG_LOG_SCRIPT_NAME, NULL TSRMLS_CC);
+ zend_message_dispatcher(ZMSG_MEMORY_LEAK_DETECTED, &leak TSRMLS_CC);
+ repeated = zend_mm_find_leaks(segment, p);
+ total += 1 + repeated;
+ if (repeated) {
+ zend_message_dispatcher(ZMSG_MEMORY_LEAK_REPEATED, (void *)(zend_uintptr_t)repeated TSRMLS_CC);
+ }
+#if ZEND_MM_CACHE
+ } else if (p->magic == MEM_BLOCK_CACHED) {
+ /* skip it */
#endif
- if (UNEXPECTED(bin == NULL)) {
- /* insufficient memory */
- return NULL;
- }
-
- heap->cache[bin_num] = bin;
- chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(bin, ZEND_MM_CHUNK_SIZE);
- page_num = ZEND_MM_ALIGNED_OFFSET(bin, ZEND_MM_CHUNK_SIZE) / ZEND_MM_PAGE_SIZE;
- zend_mm_bitset_set_bit(chunk->small_map[bin_num], page_num);
- if (bin_pages[bin_num] > 1) {
- int i = 1;
- do {
- chunk->map[page_num+i] = ZEND_MM_NRUN(i);
- i++;
- } while (i < bin_pages[bin_num]);
+ } else if (p->magic != MEM_BLOCK_LEAK) {
+ zend_mm_panic("zend_mm_heap corrupted");
+ }
+ }
+ if (ZEND_MM_IS_GUARD_BLOCK(q)) {
+ segment = segment->next_segment;
+ if (!segment) {
+ break;
+ }
+ q = (zend_mm_block *) ((char *) segment + ZEND_MM_ALIGNED_SEGMENT_SIZE);
+ }
+ p = q;
}
- if (UNEXPECTED(bin_data_offset[bin_num] == 0)) {
- return zend_mm_alloc_small_subpage_init(chunk, bin_num, page_num, bin);
- } else {
- return zend_mm_alloc_small_list_init(chunk, bin_num, page_num, bin);
+ if (total) {
+ zend_message_dispatcher(ZMSG_MEMORY_LEAKS_GRAND_TOTAL, &total TSRMLS_CC);
}
}
-static zend_always_inline void *zend_mm_alloc_small(zend_mm_heap *heap, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
+static int zend_mm_check_ptr(zend_mm_heap *heap, void *ptr, int silent ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
- int bin_num = ZEND_MM_SMALL_SIZE_TO_BIN(size);
- zend_mm_bin *bin;
+ zend_mm_block *p;
+ int no_cache_notice = 0;
+ int had_problems = 0;
+ int valid_beginning = 1;
-#if ZEND_MM_STAT
- heap->size += bin_data_size[bin_num];
- if (UNEXPECTED(heap->size > heap->peak)) {
- heap->peak = heap->size;
+ if (silent==2) {
+ silent = 1;
+ no_cache_notice = 1;
+ } else if (silent==3) {
+ silent = 0;
+ no_cache_notice = 1;
}
-#endif
- if (EXPECTED(heap->cache[bin_num])) {
- bin = heap->cache[bin_num];
- } else {
- zend_mm_chunk *chunk = heap->main_chunk;
- int page_num;
-
- do {
- page_num = zend_mm_bitset_find_one(chunk->small_map[bin_num], ZEND_MM_PAGE_MAP_LEN);
- if (EXPECTED(page_num > 0)) {
- bin = (zend_mm_bin*)ZEND_MM_PAGE_ADDR(chunk, page_num);
- heap->cache[bin_num] = bin;
- goto found;
- }
- chunk = chunk->next;
- } while (chunk != heap->main_chunk);
- return zend_mm_alloc_small_slow(heap, bin_num ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ if (!silent) {
+ TSRMLS_FETCH();
+
+ zend_message_dispatcher(ZMSG_LOG_SCRIPT_NAME, NULL TSRMLS_CC);
+ zend_debug_alloc_output("---------------------------------------\n");
+ zend_debug_alloc_output("%s(%d) : Block "PTR_FMT" status:\n" ZEND_FILE_LINE_RELAY_CC, ptr);
+ if (__zend_orig_filename) {
+ zend_debug_alloc_output("%s(%d) : Actual location (location was relayed)\n" ZEND_FILE_LINE_ORIG_RELAY_CC);
+ }
+ if (!ptr) {
+ zend_debug_alloc_output("NULL\n");
+ zend_debug_alloc_output("---------------------------------------\n");
+ return 0;
+ }
}
-found:
- if (UNEXPECTED(bin_data_offset[bin_num] == 0)) {
- return zend_mm_alloc_small_subpage(heap, bin_num, bin);
- } else {
- return zend_mm_alloc_small_list(heap, bin_num, bin);
+ if (!ptr) {
+ if (silent) {
+ return zend_mm_check_ptr(heap, ptr, 0 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ }
}
-}
-static zend_always_inline void zend_mm_free_small(zend_mm_heap *heap, void *ptr, zend_mm_bin *bin, int bin_num)
-{
- zend_mm_bin *old_bin;
+ p = ZEND_MM_HEADER_OF(ptr);
-#if ZEND_MM_STAT
- heap->size -= bin_data_size[bin_num];
+#ifdef ZTS
+ if (ZEND_MM_BAD_THREAD_ID(p)) {
+ if (!silent) {
+ zend_debug_alloc_output("Invalid pointer: ((thread_id=0x%0.8X) != (expected=0x%0.8X))\n", (long)p->thread_id, (long)tsrm_thread_id());
+ had_problems = 1;
+ } else {
+ return zend_mm_check_ptr(heap, ptr, 0 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ }
+ }
#endif
- if (UNEXPECTED(bin_data_offset[bin_num] == 0)) {
- int element_num = ((char*)ptr - ((char*)bin + bin_data_offset[bin_num])) / bin_data_size[bin_num];
- if (EXPECTED(!zend_mm_free_small_subpage(heap, bin_num, bin, element_num))) {
- return;
- }
- } else {
- if (EXPECTED(!zend_mm_free_small_list(heap, bin_num, bin, ptr))) {
- return;
+ if (p->info._size != ZEND_MM_NEXT_BLOCK(p)->info._prev) {
+ if (!silent) {
+ zend_debug_alloc_output("Invalid pointer: ((size="PTR_FMT") != (next.prev="PTR_FMT"))\n", p->info._size, ZEND_MM_NEXT_BLOCK(p)->info._prev);
+ had_problems = 1;
+ } else {
+ return zend_mm_check_ptr(heap, ptr, 0 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
}
}
-
- old_bin = heap->cache[bin_num];
- if (old_bin != bin) {
- if (UNEXPECTED(!old_bin)) {
- /* cache empty run, it may be deleted later by GC */
- heap->cache[bin_num] = bin;
+ if (p->info._prev != ZEND_MM_GUARD_BLOCK &&
+ ZEND_MM_PREV_BLOCK(p)->info._size != p->info._prev) {
+ if (!silent) {
+ zend_debug_alloc_output("Invalid pointer: ((prev="PTR_FMT") != (prev.size="PTR_FMT"))\n", p->info._prev, ZEND_MM_PREV_BLOCK(p)->info._size);
+ had_problems = 1;
} else {
- zend_mm_chunk *chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(bin, ZEND_MM_CHUNK_SIZE);
- int page_num;
-
-#if 0
- if (UNEXPECTED(old_bin->num_used == 0)) {
- zend_mm_chunk *old_chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(old_bin, ZEND_MM_CHUNK_SIZE);
- if ((chunk == old_chunk &&
- ZEND_MM_ALIGNED_OFFSET(old_bin, ZEND_MM_CHUNK_SIZE) > ZEND_MM_ALIGNED_OFFSET(bin, ZEND_MM_CHUNK_SIZE)) ||
- old_chunk->num > chunk->num) {
- heap->cache[bin_num] = bin;
- bin = old_bin;
- chunk = old_chunk;
- }
- }
-#endif
- page_num = ZEND_MM_ALIGNED_OFFSET(bin, ZEND_MM_CHUNK_SIZE) / ZEND_MM_PAGE_SIZE;
- zend_mm_bitset_reset_bit(chunk->small_map[bin_num], page_num);
- zend_mm_free_pages(heap, chunk, page_num, bin_pages[bin_num]);
+ return zend_mm_check_ptr(heap, ptr, 0 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
}
}
-}
-/******************/
-/* Specialization */
-/******************/
-#if ZEND_MM_SPEC_CT
-# define _BIN_ALLOCATOR(_num, _size, _offset, _elements, _pages, x, y) \
- void* ZEND_FASTCALL zend_mm_alloc_small_ ## _size(zend_mm_heap *heap) { \
- return zend_mm_alloc_small(heap, _size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC); \
+ if (had_problems) {
+ zend_debug_alloc_output("---------------------------------------\n");
+ return 0;
}
-ZEND_MM_BINS_INFO(_BIN_ALLOCATOR, x, y)
-#endif
-
-#if ZEND_MM_SPEC_RT
-# define _BIN_ALLOCATOR_I(_num, _size, _offset, _elements, _pages, x, y) \
- static zend_always_inline void *zend_mm_alloc_small_ ## _size ## _i(zend_mm_heap *heap) { \
- return zend_mm_alloc_small(heap, _size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC); \
+ if (!silent) {
+ zend_debug_alloc_output("%10s\t","Beginning: ");
}
-ZEND_MM_BINS_INFO(_BIN_ALLOCATOR_I, x, y)
-
-# define _BIN_DEALLOCATOR_I(_num, _size, _offset, _elements, _pages, x, y) \
- static zend_always_inline void zend_mm_free_small_ ## _size ## _i(zend_mm_heap *heap, void *ptr, zend_mm_bin *bin) { \
- zend_mm_free_small(heap, ptr, bin, _num); \
+ if (!ZEND_MM_IS_USED_BLOCK(p)) {
+ if (!silent) {
+ if (p->magic != MEM_BLOCK_FREED) {
+ zend_debug_alloc_output("Freed (magic=0x%0.8X, expected=0x%0.8X)\n", p->magic, MEM_BLOCK_FREED);
+ } else {
+ zend_debug_alloc_output("Freed\n");
+ }
+ had_problems = 1;
+ } else {
+ return zend_mm_check_ptr(heap, ptr, 0 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ }
+ } else if (ZEND_MM_IS_GUARD_BLOCK(p)) {
+ if (!silent) {
+ if (p->magic != MEM_BLOCK_FREED) {
+ zend_debug_alloc_output("Guard (magic=0x%0.8X, expected=0x%0.8X)\n", p->magic, MEM_BLOCK_FREED);
+ } else {
+ zend_debug_alloc_output("Guard\n");
+ }
+ had_problems = 1;
+ } else {
+ return zend_mm_check_ptr(heap, ptr, 0 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ }
+ } else {
+ switch (p->magic) {
+ case MEM_BLOCK_VALID:
+ case MEM_BLOCK_LEAK:
+ if (!silent) {
+ zend_debug_alloc_output("OK (allocated on %s:%d, %d bytes)\n", p->debug.filename, p->debug.lineno, (int)p->debug.size);
+ }
+ break; /* ok */
+ case MEM_BLOCK_CACHED:
+ if (!no_cache_notice) {
+ if (!silent) {
+ zend_debug_alloc_output("Cached\n");
+ had_problems = 1;
+ } else {
+ return zend_mm_check_ptr(heap, ptr, 0 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ }
+ }
+ case MEM_BLOCK_FREED:
+ if (!silent) {
+ zend_debug_alloc_output("Freed (invalid)\n");
+ had_problems = 1;
+ } else {
+ return zend_mm_check_ptr(heap, ptr, 0 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ }
+ break;
+ case MEM_BLOCK_GUARD:
+ if (!silent) {
+ zend_debug_alloc_output("Guard (invalid)\n");
+ had_problems = 1;
+ } else {
+ return zend_mm_check_ptr(heap, ptr, 0 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ }
+ break;
+ default:
+ if (!silent) {
+ zend_debug_alloc_output("Unknown (magic=0x%0.8X, expected=0x%0.8X)\n", p->magic, MEM_BLOCK_VALID);
+ had_problems = 1;
+ valid_beginning = 0;
+ } else {
+ return zend_mm_check_ptr(heap, ptr, 0 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ }
+ break;
+ }
}
-ZEND_MM_BINS_INFO(_BIN_DEALLOCATOR_I, x, y)
-#endif
+#if ZEND_MM_HEAP_PROTECTION
+ if (!valid_beginning) {
+ if (!silent) {
+ zend_debug_alloc_output("%10s\t", "Start:");
+ zend_debug_alloc_output("Unknown\n");
+ zend_debug_alloc_output("%10s\t", "End:");
+ zend_debug_alloc_output("Unknown\n");
+ }
+ } else {
+ char *end_magic = ZEND_MM_END_MAGIC_PTR(p);
-/********/
-/* Heap */
-/********/
+ if (p->debug.start_magic == _mem_block_start_magic) {
+ if (!silent) {
+ zend_debug_alloc_output("%10s\t", "Start:");
+ zend_debug_alloc_output("OK\n");
+ }
+ } else {
+ char *overflow_ptr, *magic_ptr=(char *) &_mem_block_start_magic;
+ int overflows=0;
+ int i;
-#if ZEND_DEBUG
-static zend_always_inline zend_mm_debug_info *zend_mm_get_debug_info(zend_mm_heap *heap, void *ptr)
-{
- size_t page_offset = ZEND_MM_ALIGNED_OFFSET(ptr, ZEND_MM_CHUNK_SIZE);
- zend_mm_chunk *chunk;
- int page_num;
- zend_mm_page_info info;
+ if (silent) {
+ return _mem_block_check(ptr, 0 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ }
+ had_problems = 1;
+ overflow_ptr = (char *) &p->debug.start_magic;
+ i = END_MAGIC_SIZE;
+ while (--i >= 0) {
+ if (overflow_ptr[i]!=magic_ptr[i]) {
+ overflows++;
+ }
+ }
+ zend_debug_alloc_output("%10s\t", "Start:");
+ zend_debug_alloc_output("Overflown (magic=0x%0.8X instead of 0x%0.8X)\n", p->debug.start_magic, _mem_block_start_magic);
+ zend_debug_alloc_output("%10s\t","");
+ if (overflows >= END_MAGIC_SIZE) {
+ zend_debug_alloc_output("At least %d bytes overflown\n", END_MAGIC_SIZE);
+ } else {
+ zend_debug_alloc_output("%d byte(s) overflown\n", overflows);
+ }
+ }
+ if (memcmp(end_magic, &_mem_block_end_magic, END_MAGIC_SIZE)==0) {
+ if (!silent) {
+ zend_debug_alloc_output("%10s\t", "End:");
+ zend_debug_alloc_output("OK\n");
+ }
+ } else {
+ char *overflow_ptr, *magic_ptr=(char *) &_mem_block_end_magic;
+ int overflows=0;
+ int i;
- ZEND_MM_CHECK(page_offset != 0, "zend_mm_heap corrupted");
- chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(ptr, ZEND_MM_CHUNK_SIZE);
- page_num = page_offset / ZEND_MM_PAGE_SIZE;
- info = chunk->map[page_num];
- ZEND_MM_CHECK(chunk->heap == heap, "zend_mm_heap corrupted");
- ZEND_MM_CHECK_THREAD_ID(chunk);
- if (EXPECTED(info & ZEND_MM_IS_SRUN)) {
- int bin_num;
+ if (silent) {
+ return _mem_block_check(ptr, 0 ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ }
+ had_problems = 1;
+ overflow_ptr = (char *) end_magic;
- if (UNEXPECTED(info & ZEND_MM_IS_LRUN)) {
- /* this is non-first page of a small run */
- page_num -= ZEND_MM_NRUN_PAGES(info);
- info = chunk->map[page_num];
- }
- bin_num = ZEND_MM_SRUN_BIN_NUM(info);
- return (zend_mm_debug_info*)((char*)ptr + bin_data_size[bin_num] - ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
- } else /* if (info & ZEND_MM_IS_LRUN) */ {
- int pages_count = ZEND_MM_LRUN_PAGES(info);
+ for (i=0; i < END_MAGIC_SIZE; i++) {
+ if (overflow_ptr[i]!=magic_ptr[i]) {
+ overflows++;
+ }
+ }
- return (zend_mm_debug_info*)((char*)ptr + ZEND_MM_PAGE_SIZE * pages_count - ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
+ zend_debug_alloc_output("%10s\t", "End:");
+ zend_debug_alloc_output("Overflown (magic=0x%0.8X instead of 0x%0.8X)\n", *end_magic, _mem_block_end_magic);
+ zend_debug_alloc_output("%10s\t","");
+ if (overflows >= END_MAGIC_SIZE) {
+ zend_debug_alloc_output("At least %d bytes overflown\n", END_MAGIC_SIZE);
+ } else {
+ zend_debug_alloc_output("%d byte(s) overflown\n", overflows);
+ }
+ }
}
-}
#endif
-static zend_always_inline void *zend_mm_alloc_heap(zend_mm_heap *heap, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
-{
- void *ptr;
-#if ZEND_DEBUG
- size_t real_size = size;
- zend_mm_debug_info *dbg;
-
- size = ZEND_MM_ALIGNED_SIZE(size) + ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info));
-#endif
- if (size <= ZEND_MM_MAX_SMALL_SIZE) {
-#if ZEND_MM_SPEC_RT
-# if defined(__GNUC__) && __GNUC__ >= 3 && 0
-# define _BIN_ALLOCATOR_CASE(_num, _size, _offset, _elements, _pages, heap, ptr) \
- label_ ## _size: return zend_mm_alloc_small_ ## _size ## _i(heap);
-# define _BIN_ALLOCATOR_LABEL(_num, _size, _offset, _elements, _pages, heap, ptr) \
- &&label_ ## _size,
- static const void **labels[] = {
- ZEND_MM_BINS_INFO(_BIN_ALLOCATOR_LABEL, x, y)
- };
- goto *labels[ZEND_MM_SMALL_SIZE_TO_BIN(size)];
- ZEND_MM_BINS_INFO(_BIN_ALLOCATOR_CASE, heap, ptr);
-# else
-# define _BIN_ALLOCATOR_CASE(_num, _size, _offset, _elements, _pages, heap, size) \
- case _num: return zend_mm_alloc_small_ ## _size ## _i(heap);
- switch (ZEND_MM_SMALL_SIZE_TO_BIN(size)) {
- ZEND_MM_BINS_INFO(_BIN_ALLOCATOR_CASE, heap, size);
- default: return NULL;
- }
-# endif
-#else
- ptr = zend_mm_alloc_small(heap, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
-#if ZEND_DEBUG
- dbg = zend_mm_get_debug_info(heap, ptr);
- dbg->size = real_size;
- dbg->filename = __zend_filename;
- dbg->orig_filename = __zend_orig_filename;
- dbg->lineno = __zend_lineno;
- dbg->orig_lineno = __zend_orig_lineno;
-#endif
- return ptr;
-#endif
- } else if (size <= ZEND_MM_MAX_LARGE_SIZE) {
- ptr = zend_mm_alloc_large(heap, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
-#if ZEND_DEBUG
- dbg = zend_mm_get_debug_info(heap, ptr);
- dbg->size = real_size;
- dbg->filename = __zend_filename;
- dbg->orig_filename = __zend_orig_filename;
- dbg->lineno = __zend_lineno;
- dbg->orig_lineno = __zend_orig_lineno;
-#endif
- return ptr;
- } else {
-#if ZEND_DEBUG
- size = real_size;
-#endif
- return zend_mm_alloc_huge(heap, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ if (!silent) {
+ zend_debug_alloc_output("---------------------------------------\n");
}
+ return ((!had_problems) ? 1 : 0);
}
-static zend_always_inline void zend_mm_free_heap(zend_mm_heap *heap, void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
+static int zend_mm_check_heap(zend_mm_heap *heap, int silent ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
- size_t page_offset = ZEND_MM_ALIGNED_OFFSET(ptr, ZEND_MM_CHUNK_SIZE);
+ zend_mm_segment *segment = heap->segments_list;
+ zend_mm_block *p, *q;
+ int errors = 0;
- if (UNEXPECTED(page_offset == 0)) {
- if (ptr != NULL) {
- zend_mm_free_huge(heap, ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ if (!segment) {
+ return 0;
+ }
+ p = (zend_mm_block *) ((char *) segment + ZEND_MM_ALIGNED_SEGMENT_SIZE);
+ while (1) {
+ q = ZEND_MM_NEXT_BLOCK(p);
+ if (q <= p ||
+ (char*)q > (char*)segment + segment->size ||
+ p->info._size != q->info._prev) {
+ zend_mm_panic("zend_mm_heap corrupted");
}
- } else {
- zend_mm_chunk *chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(ptr, ZEND_MM_CHUNK_SIZE);
- int page_num = page_offset / ZEND_MM_PAGE_SIZE;
- zend_mm_page_info info = chunk->map[page_num];
-
- ZEND_MM_CHECK(chunk->heap == heap, "zend_mm_heap corrupted");
- ZEND_MM_CHECK_THREAD_ID(chunk);
- if (EXPECTED(info & ZEND_MM_IS_SRUN)) {
- if (UNEXPECTED(info & ZEND_MM_IS_LRUN)) {
- /* this is non-first page of a small run */
- page_num -= ZEND_MM_NRUN_PAGES(info);
- info = chunk->map[page_num];
- }
-#if ZEND_MM_SPEC_RT
-# if defined(__GNUC__) && __GNUC__ >= 3 && 0
-# define _BIN_DEALLOCATOR_CASE(_num, _size, _offset, _elements, _pages, heap, ptr) \
- label_ ## _size: \
- zend_mm_free_small_ ## _size ## _i(heap, ptr, (zend_mm_bin*)ZEND_MM_PAGE_ADDR(chunk, page_num)); \
- return;
-# define _BIN_DEALLOCATOR_LABEL(_num, _size, _offset, _elements, _pages, heap, ptr) \
- &&label_ ## _size,
- {
- static const void **labels[] = {
- ZEND_MM_BINS_INFO(_BIN_DEALLOCATOR_LABEL, x, y)
- };
- goto *labels[ZEND_MM_SRUN_BIN_NUM(info)];
- ZEND_MM_BINS_INFO(_BIN_DEALLOCATOR_CASE, heap, ptr);
+ if (!ZEND_MM_IS_FREE_BLOCK(p)) {
+ if (p->magic == MEM_BLOCK_VALID || p->magic == MEM_BLOCK_LEAK) {
+ if (!zend_mm_check_ptr(heap, ZEND_MM_DATA_OF(p), (silent?2:3) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC)) {
+ errors++;
+ }
+#if ZEND_MM_CACHE
+ } else if (p->magic == MEM_BLOCK_CACHED) {
+ /* skip it */
+#endif
+ } else if (p->magic != MEM_BLOCK_LEAK) {
+ zend_mm_panic("zend_mm_heap corrupted");
}
-# else
-# define _BIN_DEALLOCATOR_CASE(_num, _size, _offset, _elements, _pages, heap, ptr) \
- case _num: \
- zend_mm_free_small_ ## _size ## _i(heap, ptr, (zend_mm_bin*)ZEND_MM_PAGE_ADDR(chunk, page_num)); \
- break;
- switch (ZEND_MM_SRUN_BIN_NUM(info)) {
- ZEND_MM_BINS_INFO(_BIN_DEALLOCATOR_CASE, heap, ptr);
- default:
- break;
+ }
+ if (ZEND_MM_IS_GUARD_BLOCK(q)) {
+ segment = segment->next_segment;
+ if (!segment) {
+ return errors;
}
-# endif
-#else
- zend_mm_free_small(heap, ptr, (zend_mm_bin*)ZEND_MM_PAGE_ADDR(chunk, page_num), ZEND_MM_SRUN_BIN_NUM(info));
-#endif
- } else {
- int pages_count = ZEND_MM_LRUN_PAGES(info);
-
- ZEND_MM_CHECK(ZEND_MM_ALIGNED_OFFSET(page_offset, ZEND_MM_PAGE_SIZE) == 0, "zend_mm_heap corrupted");
- zend_mm_free_large(heap, chunk, page_num, pages_count);
+ q = (zend_mm_block *) ((char *) segment + ZEND_MM_ALIGNED_SEGMENT_SIZE);
}
+ p = q;
}
}
+#endif
-static size_t zend_mm_size(zend_mm_heap *heap, void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
+ZEND_API void zend_mm_shutdown(zend_mm_heap *heap, int full_shutdown, int silent TSRMLS_DC)
{
- size_t page_offset = ZEND_MM_ALIGNED_OFFSET(ptr, ZEND_MM_CHUNK_SIZE);
+ zend_mm_storage *storage;
+ zend_mm_segment *segment;
+ zend_mm_segment *prev;
+ int internal;
- if (UNEXPECTED(page_offset == 0)) {
- return zend_mm_get_huge_block_size(heap, ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
- } else {
- zend_mm_chunk *chunk;
-#if 0 && ZEND_DEBUG
- zend_mm_debug_info *dbg = zend_mm_get_debug_info(heap, ptr);
- return dbg->size;
-#else
- int page_num;
- zend_mm_page_info info;
-
- chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(ptr, ZEND_MM_CHUNK_SIZE);
- page_num = page_offset / ZEND_MM_PAGE_SIZE;
- info = chunk->map[page_num];
- ZEND_MM_CHECK(chunk->heap == heap, "zend_mm_heap corrupted");
- ZEND_MM_CHECK_THREAD_ID(chunk);
- if (EXPECTED(info & ZEND_MM_IS_SRUN)) {
- if (UNEXPECTED(info & ZEND_MM_IS_LRUN)) {
- /* this is non-first page of a small run */
- page_num -= ZEND_MM_NRUN_PAGES(info);
- info = chunk->map[page_num];
- }
- return bin_data_size[ZEND_MM_SRUN_BIN_NUM(info)];
- } else /* if (info & ZEND_MM_IS_LARGE_RUN) */ {
- return ZEND_MM_LRUN_PAGES(info) * ZEND_MM_PAGE_SIZE;
+ if (!heap->use_zend_alloc) {
+ if (full_shutdown) {
+ free(heap);
}
-#endif
+ return;
}
-}
-static void *zend_mm_realloc_heap(zend_mm_heap *heap, void *ptr, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
-{
- size_t page_offset;
- size_t old_size;
- size_t new_size;
- void *ret;
+ if (heap->reserve) {
#if ZEND_DEBUG
- size_t real_size;
- zend_mm_debug_info *dbg;
-#endif
-
- page_offset = ZEND_MM_ALIGNED_OFFSET(ptr, ZEND_MM_CHUNK_SIZE);
- if (UNEXPECTED(page_offset == 0)) {
- if (UNEXPECTED(ptr == NULL)) {
- return zend_mm_alloc_heap(heap, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ if (!silent) {
+ _zend_mm_free_int(heap, heap->reserve ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC);
}
- old_size = zend_mm_get_huge_block_size(heap, ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
-#if ZEND_DEBUG
- real_size = size;
- size = ZEND_MM_ALIGNED_SIZE(size) + ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info));
-#endif
- if (size > ZEND_MM_MAX_LARGE_SIZE) {
-#if ZEND_DEBUG
- size = real_size;
-#endif
- new_size = ZEND_MM_ALIGNED_SIZE_EX(size, ZEND_MM_PAGE_SIZE);
- if (new_size == old_size) {
-#if ZEND_DEBUG
- zend_mm_change_huge_block_size(heap, ptr, new_size, real_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
-#else
- zend_mm_change_huge_block_size(heap, ptr, new_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
-#endif
- return ptr;
-#ifndef _WIN32
- } else if (new_size < old_size) {
- /* unmup tail */
- zend_mm_munmap((char*)ptr + new_size, old_size - new_size);
-#if ZEND_MM_STAT || ZEND_MM_LIMIT
- heap->real_size -= old_size - new_size;
-#endif
-#if ZEND_MM_STAT
- heap->size -= old_size - new_size;
-#endif
-#if ZEND_DEBUG
- zend_mm_change_huge_block_size(heap, ptr, new_size, real_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
-#else
- zend_mm_change_huge_block_size(heap, ptr, new_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
-#endif
- return ptr;
- } else /* if (new_size > old_size) */ {
-#if ZEND_MM_LIMIT
- if (heap->real_size + (new_size - old_size) > heap->limit) {
- if (heap->overflow == 0) {
-#if ZEND_DEBUG
- zend_mm_safe_error(heap, "Allowed memory size of %ld bytes exhausted at %s:%d (tried to allocate %lu bytes)", heap->limit, __zend_filename, __zend_lineno, size);
-#else
- zend_mm_safe_error(heap, "Allowed memory size of %ld bytes exhausted (tried to allocate %lu bytes)", heap->limit, size);
#endif
- return NULL;
+ heap->reserve = NULL;
+ }
+
+#if ZEND_MM_CACHE_STAT
+ if (full_shutdown) {
+ FILE *f;
+
+ f = fopen("zend_mm.log", "w");
+ if (f) {
+ int i,j;
+ size_t size, true_size, min_size, max_size;
+ int hit = 0, miss = 0;
+
+ fprintf(f, "\nidx min_size max_size true_size max_len hits misses\n");
+ size = 0;
+ while (1) {
+ true_size = ZEND_MM_TRUE_SIZE(size);
+ if (ZEND_MM_SMALL_SIZE(true_size)) {
+ min_size = size;
+ i = ZEND_MM_BUCKET_INDEX(true_size);
+ size++;
+ while (1) {
+ true_size = ZEND_MM_TRUE_SIZE(size);
+ if (ZEND_MM_SMALL_SIZE(true_size)) {
+ j = ZEND_MM_BUCKET_INDEX(true_size);
+ if (j > i) {
+ max_size = size-1;
+ break;
+ }
+ } else {
+ max_size = size-1;
+ break;
+ }
+ size++;
}
+ hit += heap->cache_stat[i].hit;
+ miss += heap->cache_stat[i].miss;
+ fprintf(f, "%2d %8d %8d %9d %8d %8d %8d\n", i, (int)min_size, (int)max_size, ZEND_MM_TRUE_SIZE(max_size), heap->cache_stat[i].max_count, heap->cache_stat[i].hit, heap->cache_stat[i].miss);
+ } else {
+ break;
}
+ }
+ fprintf(f, " %8d %8d\n", hit, miss);
+ fprintf(f, " %8d %8d\n", heap->cache_stat[ZEND_MM_NUM_BUCKETS].hit, heap->cache_stat[ZEND_MM_NUM_BUCKETS].miss);
+ fclose(f);
+ }
+ }
#endif
- /* try to map tail right after this block */
- if (zend_mm_mmap_fixed((char*)ptr + old_size, new_size - old_size)) {
-#if ZEND_MM_STAT || ZEND_MM_LIMIT
- heap->real_size += new_size - old_size;
-#endif
-#if ZEND_MM_STAT
- heap->size += new_size - old_size;
-#endif
+
#if ZEND_DEBUG
- zend_mm_change_huge_block_size(heap, ptr, new_size, real_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
-#else
- zend_mm_change_huge_block_size(heap, ptr, new_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ if (!silent) {
+ zend_mm_check_leaks(heap TSRMLS_CC);
+ }
#endif
- return ptr;
+
+ internal = heap->internal;
+ storage = heap->storage;
+ segment = heap->segments_list;
+ if (full_shutdown) {
+ while (segment) {
+ prev = segment;
+ segment = segment->next_segment;
+ ZEND_MM_STORAGE_FREE(prev);
+ }
+ heap->segments_list = NULL;
+ storage->handlers->dtor(storage);
+ if (!internal) {
+ free(heap);
+ }
+ } else {
+ if (segment) {
+#ifndef ZEND_WIN32
+ if (heap->reserve_size) {
+ while (segment->next_segment) {
+ prev = segment;
+ segment = segment->next_segment;
+ ZEND_MM_STORAGE_FREE(prev);
}
+ heap->segments_list = segment;
+ } else {
#endif
+ do {
+ prev = segment;
+ segment = segment->next_segment;
+ ZEND_MM_STORAGE_FREE(prev);
+ } while (segment);
+ heap->segments_list = NULL;
+#ifndef ZEND_WIN32
}
+#endif
}
- } else {
- zend_mm_chunk *chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(ptr, ZEND_MM_CHUNK_SIZE);
- int page_num = page_offset / ZEND_MM_PAGE_SIZE;
- zend_mm_page_info info = chunk->map[page_num];
-#if ZEND_DEBUG
- size_t real_size = size;
+ if (heap->compact_size &&
+ heap->real_peak > heap->compact_size) {
+ storage->handlers->compact(storage);
+ }
+ zend_mm_init(heap);
+ if (heap->segments_list) {
+ heap->real_size = heap->segments_list->size;
+ heap->real_peak = heap->segments_list->size;
+ } else {
+ heap->real_size = 0;
+ heap->real_peak = 0;
+ }
+ heap->size = 0;
+ heap->peak = 0;
+ if (heap->segments_list) {
+ /* mark segment as a free block */
+ zend_mm_free_block *b = (zend_mm_free_block*)((char*)heap->segments_list + ZEND_MM_ALIGNED_SEGMENT_SIZE);
+ size_t block_size = heap->segments_list->size - ZEND_MM_ALIGNED_SEGMENT_SIZE - ZEND_MM_ALIGNED_HEADER_SIZE;
+
+ ZEND_MM_MARK_FIRST_BLOCK(b);
+ ZEND_MM_LAST_BLOCK(ZEND_MM_BLOCK_AT(b, block_size));
+ ZEND_MM_BLOCK(b, ZEND_MM_FREE_BLOCK, block_size);
+ zend_mm_add_to_free_list(heap, b);
+ }
+ if (heap->reserve_size) {
+ heap->reserve = _zend_mm_alloc_int(heap, heap->reserve_size ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC);
+ }
+ heap->overflow = 0;
+ }
+}
- size = ZEND_MM_ALIGNED_SIZE(size) + ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info));
+static void zend_mm_safe_error(zend_mm_heap *heap,
+ const char *format,
+ size_t limit,
+#if ZEND_DEBUG
+ const char *filename,
+ uint lineno,
#endif
-
- ZEND_MM_CHECK(chunk->heap == heap, "zend_mm_heap corrupted");
- ZEND_MM_CHECK_THREAD_ID(chunk);
- if (info & ZEND_MM_IS_SRUN) {
- int old_bin_num, bin_num;
-
- if (info & ZEND_MM_IS_LRUN) {
- /* this is non-first page of a small run */
- page_num -= ZEND_MM_NRUN_PAGES(info);
- info = chunk->map[page_num];
+ size_t size)
+{
+ if (heap->reserve) {
+ _zend_mm_free_int(heap, heap->reserve ZEND_FILE_LINE_CC ZEND_FILE_LINE_EMPTY_CC);
+ heap->reserve = NULL;
+ }
+ if (heap->overflow == 0) {
+ const char *error_filename;
+ uint error_lineno;
+ TSRMLS_FETCH();
+ if (zend_is_compiling(TSRMLS_C)) {
+ zend_string *str = zend_get_compiled_filename(TSRMLS_C);
+ error_filename = str ? str->val : NULL;
+ error_lineno = zend_get_compiled_lineno(TSRMLS_C);
+ } else if (EG(current_execute_data)) {
+ zend_execute_data *ex = EG(current_execute_data);
+
+ while (ex && (!ex->func || !ZEND_USER_CODE(ex->func->type))) {
+ ex = ex->prev_execute_data;
}
- old_bin_num = ZEND_MM_SRUN_BIN_NUM(info);
- old_size = bin_data_size[old_bin_num];
- bin_num = ZEND_MM_SMALL_SIZE_TO_BIN(size);
- if (old_bin_num == bin_num) {
-#if ZEND_DEBUG
- dbg = zend_mm_get_debug_info(heap, ptr);
- dbg->size = real_size;
- dbg->filename = __zend_filename;
- dbg->orig_filename = __zend_orig_filename;
- dbg->lineno = __zend_lineno;
- dbg->orig_lineno = __zend_orig_lineno;
-#endif
- return ptr;
+ if (ex) {
+ error_filename = ex->func->op_array.filename->val;
+ error_lineno = ex->opline->lineno;
+ } else {
+ error_filename = NULL;
+ error_lineno = 0;
}
- } else /* if (info & ZEND_MM_IS_LARGE_RUN) */ {
- ZEND_MM_CHECK(ZEND_MM_ALIGNED_OFFSET(page_offset, ZEND_MM_PAGE_SIZE) == 0, "zend_mm_heap corrupted");
- old_size = ZEND_MM_LRUN_PAGES(info) * ZEND_MM_PAGE_SIZE;
- if (size > ZEND_MM_MAX_SMALL_SIZE && size <= ZEND_MM_MAX_LARGE_SIZE) {
- new_size = ZEND_MM_ALIGNED_SIZE_EX(size, ZEND_MM_PAGE_SIZE);
- if (new_size == old_size) {
+ } else {
+ error_filename = NULL;
+ error_lineno = 0;
+ }
+ if (!error_filename) {
+ error_filename = "Unknown";
+ }
+ heap->overflow = 1;
+ zend_try {
+ zend_error_noreturn(E_ERROR,
+ format,
+ limit,
#if ZEND_DEBUG
- dbg = zend_mm_get_debug_info(heap, ptr);
- dbg->size = real_size;
- dbg->filename = __zend_filename;
- dbg->orig_filename = __zend_orig_filename;
- dbg->lineno = __zend_lineno;
- dbg->orig_lineno = __zend_orig_lineno;
-#endif
- return ptr;
- } else if (new_size < old_size) {
- /* free tail pages */
- int new_pages_count = new_size / ZEND_MM_PAGE_SIZE;
- int rest_pages_count = (old_size - new_size) / ZEND_MM_PAGE_SIZE;
-
-#if ZEND_MM_STAT
- heap->size -= rest_pages_count * ZEND_MM_PAGE_SIZE;
-#endif
- chunk->map[page_num] = ZEND_MM_LRUN(new_pages_count);
- chunk->free_pages += rest_pages_count;
- zend_mm_bitset_reset_range(chunk->free_map, page_num + new_pages_count, rest_pages_count);
+ filename,
+ lineno,
+#endif
+ size);
+ } zend_catch {
+ if (heap->overflow == 2) {
+ fprintf(stderr, "\nFatal error: ");
+ fprintf(stderr,
+ format,
+ limit,
#if ZEND_DEBUG
- dbg = zend_mm_get_debug_info(heap, ptr);
- dbg->size = real_size;
- dbg->filename = __zend_filename;
- dbg->orig_filename = __zend_orig_filename;
- dbg->lineno = __zend_lineno;
- dbg->orig_lineno = __zend_orig_lineno;
-#endif
- return ptr;
- } else /* if (new_size > old_size) */ {
- int new_pages_count = new_size / ZEND_MM_PAGE_SIZE;
- int old_pages_count = old_size / ZEND_MM_PAGE_SIZE;
-
- /* try to allocate tail pages after this block */
- if (page_num + new_pages_count <= ZEND_MM_PAGES &&
- zend_mm_bitset_is_free_range(chunk->free_map, page_num + old_pages_count, new_pages_count - old_pages_count)) {
-#if ZEND_MM_STAT
- heap->size += (new_size - old_size);
- if (heap->size > heap->peak) {
- heap->peak = heap->size;
- }
+ filename,
+ lineno,
#endif
- chunk->free_pages -= new_pages_count - old_pages_count;
- zend_mm_bitset_set_range(chunk->free_map, page_num + old_pages_count, new_pages_count - old_pages_count);
- chunk->map[page_num] = ZEND_MM_LRUN(new_pages_count);
-#if ZEND_DEBUG
- dbg = zend_mm_get_debug_info(heap, ptr);
- dbg->size = real_size;
- dbg->filename = __zend_filename;
- dbg->orig_filename = __zend_orig_filename;
- dbg->lineno = __zend_lineno;
- dbg->orig_lineno = __zend_orig_lineno;
-#endif
- return ptr;
- }
- }
+ size);
+ fprintf(stderr, " in %s on line %d\n", error_filename, error_lineno);
}
- }
-#if ZEND_DEBUG
- size = real_size;
+/* See http://support.microsoft.com/kb/190351 */
+#ifdef PHP_WIN32
+ fflush(stderr);
#endif
+ } zend_end_try();
+ } else {
+ heap->overflow = 2;
}
-
- /* Naive reallocation */
- old_size = zend_mm_size(heap, ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
- ret = zend_mm_alloc_heap(heap, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
- memcpy(ret, ptr, MIN(old_size, size));
- zend_mm_free_heap(heap, ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
- return ret;
+ zend_bailout();
}
-/*********************/
-/* Huge Runs (again) */
-/*********************/
-
-#if ZEND_DEBUG
-static void zend_mm_add_huge_block(zend_mm_heap *heap, void *ptr, size_t size, size_t dbg_size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
-#else
-static void zend_mm_add_huge_block(zend_mm_heap *heap, void *ptr, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
-#endif
+static zend_mm_free_block *zend_mm_search_large_block(zend_mm_heap *heap, size_t true_size)
{
- zend_mm_huge_list *list = (zend_mm_huge_list*)zend_mm_alloc_heap(heap, sizeof(zend_mm_huge_list) ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
- list->ptr = ptr;
- list->size = size;
- list->next = heap->huge_list;
-#if ZEND_DEBUG
- list->dbg.size = dbg_size;
- list->dbg.filename = __zend_filename;
- list->dbg.orig_filename = __zend_orig_filename;
- list->dbg.lineno = __zend_lineno;
- list->dbg.orig_lineno = __zend_orig_lineno;
-#endif
- heap->huge_list = list;
-}
+ zend_mm_free_block *best_fit;
+ size_t index = ZEND_MM_LARGE_BUCKET_INDEX(true_size);
+ size_t bitmap = heap->large_free_bitmap >> index;
+ zend_mm_free_block *p;
-static size_t zend_mm_del_huge_block(zend_mm_heap *heap, void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
-{
- zend_mm_huge_list *prev = NULL;
- zend_mm_huge_list *list = heap->huge_list;
- while (list != NULL) {
- if (list->ptr == ptr) {
- size_t size;
+ if (bitmap == 0) {
+ return NULL;
+ }
- if (prev) {
- prev->next = list->next;
+ if (UNEXPECTED((bitmap & 1) != 0)) {
+ /* Search for best "large" free block */
+ zend_mm_free_block *rst = NULL;
+ size_t m;
+ size_t best_size = -1;
+
+ best_fit = NULL;
+ p = heap->large_free_buckets[index];
+ for (m = true_size << (ZEND_MM_NUM_BUCKETS - index); ; m <<= 1) {
+ if (UNEXPECTED(ZEND_MM_FREE_BLOCK_SIZE(p) == true_size)) {
+ return p->next_free_block;
+ } else if (ZEND_MM_FREE_BLOCK_SIZE(p) >= true_size &&
+ ZEND_MM_FREE_BLOCK_SIZE(p) < best_size) {
+ best_size = ZEND_MM_FREE_BLOCK_SIZE(p);
+ best_fit = p;
+ }
+ if ((m & (ZEND_MM_LONG_CONST(1) << (ZEND_MM_NUM_BUCKETS-1))) == 0) {
+ if (p->child[1]) {
+ rst = p->child[1];
+ }
+ if (p->child[0]) {
+ p = p->child[0];
+ } else {
+ break;
+ }
+ } else if (p->child[1]) {
+ p = p->child[1];
} else {
- heap->huge_list = list->next;
+ break;
}
- size = list->size;
- zend_mm_free_heap(heap, list ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
- return size;
}
- prev = list;
- list = list->next;
+
+ for (p = rst; p; p = p->child[p->child[0] != NULL]) {
+ if (UNEXPECTED(ZEND_MM_FREE_BLOCK_SIZE(p) == true_size)) {
+ return p->next_free_block;
+ } else if (ZEND_MM_FREE_BLOCK_SIZE(p) > true_size &&
+ ZEND_MM_FREE_BLOCK_SIZE(p) < best_size) {
+ best_size = ZEND_MM_FREE_BLOCK_SIZE(p);
+ best_fit = p;
+ }
+ }
+
+ if (best_fit) {
+ return best_fit->next_free_block;
+ }
+ bitmap = bitmap >> 1;
+ if (!bitmap) {
+ return NULL;
+ }
+ index++;
}
- ZEND_MM_CHECK(0, "zend_mm_heap corrupted");
- return 0;
-}
-static size_t zend_mm_get_huge_block_size(zend_mm_heap *heap, void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
-{
- zend_mm_huge_list *list = heap->huge_list;
- while (list != NULL) {
- if (list->ptr == ptr) {
- return list->size;
+ /* Search for smallest "large" free block */
+ best_fit = p = heap->large_free_buckets[index + zend_mm_low_bit(bitmap)];
+ while ((p = p->child[p->child[0] != NULL])) {
+ if (ZEND_MM_FREE_BLOCK_SIZE(p) < ZEND_MM_FREE_BLOCK_SIZE(best_fit)) {
+ best_fit = p;
}
- list = list->next;
}
- ZEND_MM_CHECK(0, "zend_mm_heap corrupted");
- return 0;
+ return best_fit->next_free_block;
}
-#if ZEND_DEBUG
-static void zend_mm_change_huge_block_size(zend_mm_heap *heap, void *ptr, size_t size, size_t dbg_size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
-#else
-static void zend_mm_change_huge_block_size(zend_mm_heap *heap, void *ptr, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
-#endif
+static void *_zend_mm_alloc_int(zend_mm_heap *heap, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
- zend_mm_huge_list *list = heap->huge_list;
- while (list != NULL) {
- if (list->ptr == ptr) {
- list->size = size;
-#if ZEND_DEBUG
- list->dbg.size = dbg_size;
- list->dbg.filename = __zend_filename;
- list->dbg.orig_filename = __zend_orig_filename;
- list->dbg.lineno = __zend_lineno;
- list->dbg.orig_lineno = __zend_orig_lineno;
+ zend_mm_free_block *best_fit;
+ size_t true_size = ZEND_MM_TRUE_SIZE(size);
+ size_t block_size;
+ size_t remaining_size;
+ size_t segment_size;
+ zend_mm_segment *segment;
+ int keep_rest = 0;
+#ifdef ZEND_SIGNALS
+ TSRMLS_FETCH();
+#endif
+
+ HANDLE_BLOCK_INTERRUPTIONS();
+
+ if (EXPECTED(ZEND_MM_SMALL_SIZE(true_size))) {
+ size_t index = ZEND_MM_BUCKET_INDEX(true_size);
+ size_t bitmap;
+
+ if (UNEXPECTED(true_size < size)) {
+ goto out_of_memory;
+ }
+#if ZEND_MM_CACHE
+ if (EXPECTED(heap->cache[index] != NULL)) {
+ /* Get block from cache */
+#if ZEND_MM_CACHE_STAT
+ heap->cache_stat[index].count--;
+ heap->cache_stat[index].hit++;
+#endif
+ best_fit = heap->cache[index];
+ heap->cache[index] = best_fit->prev_free_block;
+ heap->cached -= true_size;
+ ZEND_MM_CHECK_MAGIC(best_fit, MEM_BLOCK_CACHED);
+ ZEND_MM_SET_DEBUG_INFO(best_fit, size, 1, 0);
+ HANDLE_UNBLOCK_INTERRUPTIONS();
+ return ZEND_MM_DATA_OF(best_fit);
+ }
+#if ZEND_MM_CACHE_STAT
+ heap->cache_stat[index].miss++;
+#endif
+#endif
+
+ bitmap = heap->free_bitmap >> index;
+ if (bitmap) {
+ /* Found some "small" free block that can be used */
+ index += zend_mm_low_bit(bitmap);
+ best_fit = heap->free_buckets[index*2];
+#if ZEND_MM_CACHE_STAT
+ heap->cache_stat[ZEND_MM_NUM_BUCKETS].hit++;
+#endif
+ goto zend_mm_finished_searching_for_block;
+ }
+ }
+
+#if ZEND_MM_CACHE_STAT
+ heap->cache_stat[ZEND_MM_NUM_BUCKETS].miss++;
#endif
- return;
+
+ best_fit = zend_mm_search_large_block(heap, true_size);
+
+ if (!best_fit && heap->real_size >= heap->limit - heap->block_size) {
+ zend_mm_free_block *p = heap->rest_buckets[0];
+ size_t best_size = -1;
+
+ while (p != ZEND_MM_REST_BUCKET(heap)) {
+ if (UNEXPECTED(ZEND_MM_FREE_BLOCK_SIZE(p) == true_size)) {
+ best_fit = p;
+ goto zend_mm_finished_searching_for_block;
+ } else if (ZEND_MM_FREE_BLOCK_SIZE(p) > true_size &&
+ ZEND_MM_FREE_BLOCK_SIZE(p) < best_size) {
+ best_size = ZEND_MM_FREE_BLOCK_SIZE(p);
+ best_fit = p;
+ }
+ p = p->prev_free_block;
}
- list = list->next;
}
-}
-static void *zend_mm_alloc_huge(zend_mm_heap *heap, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
-{
- size_t new_size = ZEND_MM_ALIGNED_SIZE_EX(size, ZEND_MM_PAGE_SIZE);
- void *ptr;
+ if (!best_fit) {
+ if (true_size > heap->block_size - (ZEND_MM_ALIGNED_SEGMENT_SIZE + ZEND_MM_ALIGNED_HEADER_SIZE)) {
+ /* Make sure we add a memory block which is big enough,
+ segment must have header "size" and trailer "guard" block */
+ segment_size = true_size + ZEND_MM_ALIGNED_SEGMENT_SIZE + ZEND_MM_ALIGNED_HEADER_SIZE;
+ segment_size = (segment_size + (heap->block_size-1)) & ~(heap->block_size-1);
+ keep_rest = 1;
+ } else {
+ segment_size = heap->block_size;
+ }
-#if ZEND_MM_LIMIT
- if (heap->real_size + new_size > heap->limit) {
- if (heap->overflow == 0) {
+ if (segment_size < true_size ||
+ heap->real_size + segment_size > heap->limit) {
+ /* Memory limit overflow */
+#if ZEND_MM_CACHE
+ zend_mm_free_cache(heap);
+#endif
+ HANDLE_UNBLOCK_INTERRUPTIONS();
#if ZEND_DEBUG
zend_mm_safe_error(heap, "Allowed memory size of %ld bytes exhausted at %s:%d (tried to allocate %lu bytes)", heap->limit, __zend_filename, __zend_lineno, size);
#else
zend_mm_safe_error(heap, "Allowed memory size of %ld bytes exhausted (tried to allocate %lu bytes)", heap->limit, size);
#endif
- return NULL;
}
- }
+
+ segment = (zend_mm_segment *) ZEND_MM_STORAGE_ALLOC(segment_size);
+
+ if (!segment) {
+ /* Storage manager cannot allocate memory */
+#if ZEND_MM_CACHE
+ zend_mm_free_cache(heap);
#endif
- ptr = zend_mm_chunk_alloc(new_size, ZEND_MM_CHUNK_SIZE);
- if (UNEXPECTED(ptr == NULL)) {
- /* insufficient memory */
- return NULL;
- }
+out_of_memory:
+ HANDLE_UNBLOCK_INTERRUPTIONS();
#if ZEND_DEBUG
- zend_mm_add_huge_block(heap, ptr, new_size, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ zend_mm_safe_error(heap, "Out of memory (allocated %ld) at %s:%d (tried to allocate %lu bytes)", heap->real_size, __zend_filename, __zend_lineno, size);
#else
- zend_mm_add_huge_block(heap, ptr, new_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
-#endif
-#if ZEND_MM_STAT || ZEND_MM_LIMIT
- heap->real_size += new_size;
+ zend_mm_safe_error(heap, "Out of memory (allocated %ld) (tried to allocate %lu bytes)", heap->real_size, size);
#endif
-#if ZEND_MM_STAT
- if (heap->real_size > heap->real_peak) {
- heap->real_peak = heap->real_size;
+ return NULL;
+ }
+
+ heap->real_size += segment_size;
+ if (heap->real_size > heap->real_peak) {
+ heap->real_peak = heap->real_size;
+ }
+
+ segment->size = segment_size;
+ segment->next_segment = heap->segments_list;
+ heap->segments_list = segment;
+
+ best_fit = (zend_mm_free_block *) ((char *) segment + ZEND_MM_ALIGNED_SEGMENT_SIZE);
+ ZEND_MM_MARK_FIRST_BLOCK(best_fit);
+
+ block_size = segment_size - ZEND_MM_ALIGNED_SEGMENT_SIZE - ZEND_MM_ALIGNED_HEADER_SIZE;
+
+ ZEND_MM_LAST_BLOCK(ZEND_MM_BLOCK_AT(best_fit, block_size));
+
+ } else {
+zend_mm_finished_searching_for_block:
+ /* remove from free list */
+ ZEND_MM_CHECK_MAGIC(best_fit, MEM_BLOCK_FREED);
+ ZEND_MM_CHECK_COOKIE(best_fit);
+ ZEND_MM_CHECK_BLOCK_LINKAGE(best_fit);
+ zend_mm_remove_from_free_list(heap, best_fit);
+
+ block_size = ZEND_MM_FREE_BLOCK_SIZE(best_fit);
+ }
+
+ remaining_size = block_size - true_size;
+
+ if (remaining_size < ZEND_MM_ALIGNED_MIN_HEADER_SIZE) {
+ true_size = block_size;
+ ZEND_MM_BLOCK(best_fit, ZEND_MM_USED_BLOCK, true_size);
+ } else {
+ zend_mm_free_block *new_free_block;
+
+ /* prepare new free block */
+ ZEND_MM_BLOCK(best_fit, ZEND_MM_USED_BLOCK, true_size);
+ new_free_block = (zend_mm_free_block *) ZEND_MM_BLOCK_AT(best_fit, true_size);
+ ZEND_MM_BLOCK(new_free_block, ZEND_MM_FREE_BLOCK, remaining_size);
+
+ /* add the new free block to the free list */
+ if (EXPECTED(!keep_rest)) {
+ zend_mm_add_to_free_list(heap, new_free_block);
+ } else {
+ zend_mm_add_to_rest_list(heap, new_free_block);
+ }
}
- heap->size += new_size;
- if (heap->size > heap->peak) {
+
+ ZEND_MM_SET_DEBUG_INFO(best_fit, size, 1, 1);
+
+ heap->size += true_size;
+ if (heap->peak < heap->size) {
heap->peak = heap->size;
}
-#endif
- return ptr;
-}
-static void zend_mm_free_huge(zend_mm_heap *heap, void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
-{
- size_t size;
+ HANDLE_UNBLOCK_INTERRUPTIONS();
- ZEND_MM_CHECK(ZEND_MM_ALIGNED_OFFSET(ptr, ZEND_MM_CHUNK_SIZE) == 0, "zend_mm_heap corrupted");
- size = zend_mm_del_huge_block(heap, ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
- zend_mm_munmap(ptr, size);
-#if ZEND_MM_STAT || ZEND_MM_LIMIT
- heap->real_size -= size;
-#endif
-#if ZEND_MM_STAT
- heap->size -= size;
-#endif
+ return ZEND_MM_DATA_OF(best_fit);
}
-/******************/
-/* Initialization */
-/******************/
-zend_mm_heap *zend_mm_init(void)
+static void _zend_mm_free_int(zend_mm_heap *heap, void *p ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
- zend_mm_chunk *chunk = (zend_mm_chunk*)zend_mm_chunk_alloc(ZEND_MM_CHUNK_SIZE, ZEND_MM_CHUNK_SIZE);
- zend_mm_heap *heap;
-
- if (UNEXPECTED(chunk == NULL)) {
-#if ZEND_MM_ERROR
- fprintf(stderr, "\nCan't initialize heap: [%d] %s\n", errno, strerror(errno));
+ zend_mm_block *mm_block;
+ zend_mm_block *next_block;
+ size_t size;
+#ifdef ZEND_SIGNALS
+ TSRMLS_FETCH();
#endif
- return NULL;
+ if (!ZEND_MM_VALID_PTR(p)) {
+ return;
}
- heap = (zend_mm_heap*)ZEND_MM_PAGE_ADDR(chunk, ZEND_MM_FIRST_PAGE);
- chunk->heap = heap;
- chunk->next = chunk;
- chunk->prev = chunk;
- chunk->free_pages = ZEND_MM_PAGES - (ZEND_MM_FIRST_PAGE + 1);
- chunk->free_tail = ZEND_MM_FIRST_PAGE + 1;
- chunk->num = 0;
-#if ZEND_DEBUG && defined(ZTS)
- chunk->thread_id = tsrm_thread_id();
-#endif
- chunk->free_map[0] = (1L << (ZEND_MM_FIRST_PAGE + 1)) - 1;
- chunk->map[0] = ZEND_MM_LRUN(ZEND_MM_FIRST_PAGE);
- chunk->map[ZEND_MM_FIRST_PAGE] = ZEND_MM_LRUN(1);
- heap->main_chunk = chunk;
- heap->cached_chunks = NULL;
- heap->chunks_count = 1;
- heap->peak_chunks_count = 1;
- heap->cached_chunks_count = 0;
- heap->avg_chunks_count = 1.0;
-#if ZEND_MM_STAT || ZEND_MM_LIMIT
- heap->real_size = ZEND_MM_CHUNK_SIZE;
-#endif
-#if ZEND_MM_STAT
- heap->real_peak = ZEND_MM_CHUNK_SIZE;
- heap->size = 0;
- heap->peak = 0;
-#endif
-#if ZEND_MM_LIMIT
- heap->limit = (-1L >> 1);
- heap->overflow = 0;
-#endif
-#if ZEND_MM_CUSTOM
- heap->use_custom_heap = 0;
-#endif
- heap->huge_list = NULL;
- return heap;
-}
-#if ZEND_DEBUG
-/******************/
-/* Leak detection */
-/******************/
+ HANDLE_BLOCK_INTERRUPTIONS();
-static long zend_mm_find_leaks_small(zend_mm_chunk *p, int i, int j, zend_leak_info *leak)
-{
- int bin_num = ZEND_MM_SRUN_BIN_NUM(p->map[i]);
- long count = 0;
+ mm_block = ZEND_MM_HEADER_OF(p);
+ size = ZEND_MM_BLOCK_SIZE(mm_block);
+ ZEND_MM_CHECK_PROTECTION(mm_block);
- if (bin_data_offset[bin_num] == 0) {
- if (ZEND_MM_SRUN_BITSET(p->map[i]) != 0) {
- for (; j < bin_elements[bin_num]; j++) {
- if (ZEND_MM_SRUN_BITSET(p->map[i]) & (1 << j)) {
- zend_mm_debug_info *dbg = (zend_mm_debug_info*)((char*)p + ZEND_MM_PAGE_SIZE * i + bin_data_size[bin_num] * (j + 1) - ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
+#if ZEND_DEBUG || ZEND_MM_HEAP_PROTECTION
+ memset(ZEND_MM_DATA_OF(mm_block), 0x5a, mm_block->debug.size);
+#endif
- if (dbg->filename == leak->filename &&
- dbg->lineno == leak->lineno) {
+#if ZEND_MM_CACHE
+ if (EXPECTED(ZEND_MM_SMALL_SIZE(size)) && EXPECTED(heap->cached < ZEND_MM_CACHE_SIZE)) {
+ size_t index = ZEND_MM_BUCKET_INDEX(size);
+ zend_mm_free_block **cache = &heap->cache[index];
- count++;
- p->map[i] = ZEND_MM_SRUN_BITSET_EXCL(p->map[i], j);
- if (ZEND_MM_SRUN_BITSET(p->map[i]) == 0) {
- break;
- }
- }
- }
- }
+ ((zend_mm_free_block*)mm_block)->prev_free_block = *cache;
+ *cache = (zend_mm_free_block*)mm_block;
+ heap->cached += size;
+ ZEND_MM_SET_MAGIC(mm_block, MEM_BLOCK_CACHED);
+#if ZEND_MM_CACHE_STAT
+ if (++heap->cache_stat[index].count > heap->cache_stat[index].max_count) {
+ heap->cache_stat[index].max_count = heap->cache_stat[index].count;
}
+#endif
+ HANDLE_UNBLOCK_INTERRUPTIONS();
+ return;
+ }
+#endif
+
+ heap->size -= size;
+
+ next_block = ZEND_MM_BLOCK_AT(mm_block, size);
+ if (ZEND_MM_IS_FREE_BLOCK(next_block)) {
+ zend_mm_remove_from_free_list(heap, (zend_mm_free_block *) next_block);
+ size += ZEND_MM_FREE_BLOCK_SIZE(next_block);
+ }
+ if (ZEND_MM_PREV_BLOCK_IS_FREE(mm_block)) {
+ mm_block = ZEND_MM_PREV_BLOCK(mm_block);
+ zend_mm_remove_from_free_list(heap, (zend_mm_free_block *) mm_block);
+ size += ZEND_MM_FREE_BLOCK_SIZE(mm_block);
+ }
+ if (ZEND_MM_IS_FIRST_BLOCK(mm_block) &&
+ ZEND_MM_IS_GUARD_BLOCK(ZEND_MM_BLOCK_AT(mm_block, size))) {
+ zend_mm_del_segment(heap, (zend_mm_segment *) ((char *)mm_block - ZEND_MM_ALIGNED_SEGMENT_SIZE));
} else {
- zend_mm_bin *bin = (zend_mm_bin*)((char*)p + ZEND_MM_PAGE_SIZE * i);
-
- if (bin->num_used > 0) {
- zend_mm_debug_info *dbg = (zend_mm_debug_info*)((char*)p + ZEND_MM_PAGE_SIZE * i + bin_data_offset[bin_num] + bin_data_size[bin_num] * (j + 1) - ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
-
- while (j < bin_elements[bin_num]) {
- if (dbg->size != 0 &&
- dbg->filename == leak->filename &&
- dbg->lineno == leak->lineno) {
-
- count++;
- dbg->size = 0;
- dbg->filename = NULL;
- dbg->lineno = 0;
- bin->num_used--;
- if (bin->num_used == 0) {
- break;
- }
- }
- j++;
- dbg = (zend_mm_debug_info*)((char*)dbg + bin_data_size[bin_num]);
- }
- }
+ ZEND_MM_BLOCK(mm_block, ZEND_MM_FREE_BLOCK, size);
+ zend_mm_add_to_free_list(heap, (zend_mm_free_block *) mm_block);
}
- return count;
+ HANDLE_UNBLOCK_INTERRUPTIONS();
}
-static long zend_mm_find_leaks(zend_mm_heap *heap, zend_mm_chunk *p, int i, zend_leak_info *leak)
+static void *_zend_mm_realloc_int(zend_mm_heap *heap, void *p, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
- long count = 0;
+ zend_mm_block *mm_block = ZEND_MM_HEADER_OF(p);
+ zend_mm_block *next_block;
+ size_t true_size;
+ size_t orig_size;
+ void *ptr;
+#ifdef ZEND_SIGNALS
+ TSRMLS_FETCH();
+#endif
+ if (UNEXPECTED(!p) || !ZEND_MM_VALID_PTR(p)) {
+ return _zend_mm_alloc_int(heap, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ }
- do {
- while (i < p->free_tail) {
- if (zend_mm_bitset_is_set(p->free_map, i)) {
- if (p->map[i] & ZEND_MM_IS_SRUN) {
- int bin_num = ZEND_MM_SRUN_BIN_NUM(p->map[i]);
- zend_mm_find_leaks_small(p, i, 0, leak);
- i += bin_pages[bin_num];
- } else /* if (p->map[i] & ZEND_MM_IS_LRUN) */ {
- int pages_count = ZEND_MM_LRUN_PAGES(p->map[i]);
- zend_mm_debug_info *dbg = (zend_mm_debug_info*)((char*)p + ZEND_MM_PAGE_SIZE * (i + pages_count) - ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
+ HANDLE_BLOCK_INTERRUPTIONS();
- if (dbg->filename == leak->filename && dbg->lineno == leak->lineno) {
- count++;
- }
- zend_mm_bitset_reset_range(p->free_map, i, i + pages_count);
- i += pages_count;
- }
- } else {
- i++;
- }
- }
- p = p->next;
- } while (p != heap->main_chunk);
- return count;
-}
+ mm_block = ZEND_MM_HEADER_OF(p);
+ true_size = ZEND_MM_TRUE_SIZE(size);
+ orig_size = ZEND_MM_BLOCK_SIZE(mm_block);
+ ZEND_MM_CHECK_PROTECTION(mm_block);
-static void zend_mm_check_leaks(zend_mm_heap *heap TSRMLS_DC)
-{
- zend_mm_huge_list *list;
- zend_mm_chunk *p;
- zend_leak_info leak;
- long repeated = 0;
- zend_uint total = 0;
- int i, j;
+ if (UNEXPECTED(true_size < size)) {
+ goto out_of_memory;
+ }
- /* find leaked huge blocks and free them */
- list = heap->huge_list;
- while (list) {
- zend_mm_huge_list *q = list;
+ if (true_size <= orig_size) {
+ size_t remaining_size = orig_size - true_size;
- heap->huge_list = list->next;
+ if (remaining_size >= ZEND_MM_ALIGNED_MIN_HEADER_SIZE) {
+ zend_mm_free_block *new_free_block;
- leak.addr = list->ptr;
- leak.size = list->dbg.size;
- leak.filename = list->dbg.filename;
- leak.orig_filename = list->dbg.orig_filename;
- leak.lineno = list->dbg.lineno;
- leak.orig_lineno = list->dbg.orig_lineno;
-
- zend_message_dispatcher(ZMSG_LOG_SCRIPT_NAME, NULL TSRMLS_CC);
- zend_message_dispatcher(ZMSG_MEMORY_LEAK_DETECTED, &leak TSRMLS_CC);
-//??? repeated = zend_mm_find_leaks(segment, p);
- total += 1 + repeated;
- if (repeated) {
- zend_message_dispatcher(ZMSG_MEMORY_LEAK_REPEATED, (void *)(zend_uintptr_t)repeated TSRMLS_CC);
- }
-
- list = list->next;
- zend_mm_munmap(q->ptr, q->size);
- zend_mm_free_heap(heap, q, NULL, 0, NULL, 0);
- }
-
- /* for each chunk */
- p = heap->main_chunk;
- do {
- i = ZEND_MM_FIRST_PAGE;
- if (p == heap->main_chunk) {
- /* first block in main chunk contains the heap itself */
- i++;
- }
- while (i < p->free_tail) {
- if (zend_mm_bitset_is_set(p->free_map, i)) {
- if (p->map[i] & ZEND_MM_IS_SRUN) {
- int bin_num = ZEND_MM_SRUN_BIN_NUM(p->map[i]);
-
- if (bin_data_offset[bin_num] == 0) {
- if (ZEND_MM_SRUN_BITSET(p->map[i]) != 0) {
- for (j = 0; j < bin_elements[bin_num]; j++) {
- if (ZEND_MM_SRUN_BITSET(p->map[i]) & (1 << j)) {
- zend_mm_debug_info *dbg = (zend_mm_debug_info*)((char*)p + ZEND_MM_PAGE_SIZE * i + bin_data_size[bin_num] * (j + 1) - ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
-
- leak.addr = (zend_mm_debug_info*)((char*)p + ZEND_MM_PAGE_SIZE * i + bin_data_size[bin_num] * j);
- leak.size = dbg->size;
- leak.filename = dbg->filename;
- leak.orig_filename = dbg->orig_filename;
- leak.lineno = dbg->lineno;
- leak.orig_lineno = dbg->orig_lineno;
-
- zend_message_dispatcher(ZMSG_LOG_SCRIPT_NAME, NULL TSRMLS_CC);
- zend_message_dispatcher(ZMSG_MEMORY_LEAK_DETECTED, &leak TSRMLS_CC);
-
- p->map[i] = ZEND_MM_SRUN_BITSET_EXCL(p->map[i], j);
-
- repeated = zend_mm_find_leaks_small(p, i, j + 1, &leak) +
- zend_mm_find_leaks(heap, p, i + bin_pages[bin_num], &leak);
- total += 1 + repeated;
- if (repeated) {
- zend_message_dispatcher(ZMSG_MEMORY_LEAK_REPEATED, (void *)(zend_uintptr_t)repeated TSRMLS_CC);
- }
- if (ZEND_MM_SRUN_BITSET(p->map[i]) == 0) {
- break;
- }
- }
- }
- }
- } else {
- zend_mm_bin *bin = (zend_mm_bin*)((char*)p + ZEND_MM_PAGE_SIZE * i);
-
- if (bin->num_used > 0) {
- zend_mm_debug_info *dbg = (zend_mm_debug_info*)((char*)p + ZEND_MM_PAGE_SIZE * i + bin_data_offset[bin_num] + bin_data_size[bin_num] - ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
-
- j = 0;
- while (j < bin_elements[bin_num]) {
- if (dbg->size != 0) {
- leak.addr = (zend_mm_debug_info*)((char*)p + ZEND_MM_PAGE_SIZE * i + bin_data_offset[bin_num] + bin_data_size[bin_num] * j);
- leak.size = dbg->size;
- leak.filename = dbg->filename;
- leak.orig_filename = dbg->orig_filename;
- leak.lineno = dbg->lineno;
- leak.orig_lineno = dbg->orig_lineno;
-
- zend_message_dispatcher(ZMSG_LOG_SCRIPT_NAME, NULL TSRMLS_CC);
- zend_message_dispatcher(ZMSG_MEMORY_LEAK_DETECTED, &leak TSRMLS_CC);
-
- dbg->size = 0;
- dbg->filename = NULL;
- dbg->lineno = 0;
- bin->num_used--;
-
- repeated = zend_mm_find_leaks_small(p, i, j + 1, &leak) +
- zend_mm_find_leaks(heap, p, i + bin_pages[bin_num], &leak);
- total += 1 + repeated;
- if (repeated) {
- zend_message_dispatcher(ZMSG_MEMORY_LEAK_REPEATED, (void *)(zend_uintptr_t)repeated TSRMLS_CC);
- }
-
- if (bin->num_used == 0) {
- break;
- }
- }
- dbg = (zend_mm_debug_info*)((char*)dbg + bin_data_size[bin_num]);
- j++;
- }
- }
- }
- i += bin_pages[bin_num];
- } else /* if (p->map[i] & ZEND_MM_IS_LRUN) */ {
- int pages_count = ZEND_MM_LRUN_PAGES(p->map[i]);
- zend_mm_debug_info *dbg = (zend_mm_debug_info*)((char*)p + ZEND_MM_PAGE_SIZE * (i + pages_count) - ZEND_MM_ALIGNED_SIZE(sizeof(zend_mm_debug_info)));
-
- leak.addr = (void*)((char*)p + ZEND_MM_PAGE_SIZE * i);
- leak.size = dbg->size;
- leak.filename = dbg->filename;
- leak.orig_filename = dbg->orig_filename;
- leak.lineno = dbg->lineno;
- leak.orig_lineno = dbg->orig_lineno;
-
- zend_message_dispatcher(ZMSG_LOG_SCRIPT_NAME, NULL TSRMLS_CC);
- zend_message_dispatcher(ZMSG_MEMORY_LEAK_DETECTED, &leak TSRMLS_CC);
+ next_block = ZEND_MM_BLOCK_AT(mm_block, orig_size);
+ if (ZEND_MM_IS_FREE_BLOCK(next_block)) {
+ remaining_size += ZEND_MM_FREE_BLOCK_SIZE(next_block);
+ zend_mm_remove_from_free_list(heap, (zend_mm_free_block *) next_block);
+ }
- zend_mm_bitset_reset_range(p->free_map, i, i + pages_count);
- i += pages_count;
+ /* prepare new free block */
+ ZEND_MM_BLOCK(mm_block, ZEND_MM_USED_BLOCK, true_size);
+ new_free_block = (zend_mm_free_block *) ZEND_MM_BLOCK_AT(mm_block, true_size);
- repeated = zend_mm_find_leaks(heap, p, i + pages_count, &leak);
- total += 1 + repeated;
- if (repeated) {
- zend_message_dispatcher(ZMSG_MEMORY_LEAK_REPEATED, (void *)(zend_uintptr_t)repeated TSRMLS_CC);
- }
- }
- } else {
- i++;
- }
+ ZEND_MM_BLOCK(new_free_block, ZEND_MM_FREE_BLOCK, remaining_size);
+
+ /* add the new free block to the free list */
+ zend_mm_add_to_free_list(heap, new_free_block);
+ heap->size += (true_size - orig_size);
}
- p = p->next;
- } while (p != heap->main_chunk);
- if (total) {
- zend_message_dispatcher(ZMSG_MEMORY_LEAKS_GRAND_TOTAL, &total TSRMLS_CC);
+ ZEND_MM_SET_DEBUG_INFO(mm_block, size, 0, 0);
+ HANDLE_UNBLOCK_INTERRUPTIONS();
+ return p;
}
-}
+
+#if ZEND_MM_CACHE
+ if (ZEND_MM_SMALL_SIZE(true_size)) {
+ size_t index = ZEND_MM_BUCKET_INDEX(true_size);
+
+ if (heap->cache[index] != NULL) {
+ zend_mm_free_block *best_fit;
+ zend_mm_free_block **cache;
+
+#if ZEND_MM_CACHE_STAT
+ heap->cache_stat[index].count--;
+ heap->cache_stat[index].hit++;
+#endif
+ best_fit = heap->cache[index];
+ heap->cache[index] = best_fit->prev_free_block;
+ ZEND_MM_CHECK_MAGIC(best_fit, MEM_BLOCK_CACHED);
+ ZEND_MM_SET_DEBUG_INFO(best_fit, size, 1, 0);
+
+ ptr = ZEND_MM_DATA_OF(best_fit);
+
+#if ZEND_DEBUG || ZEND_MM_HEAP_PROTECTION
+ memcpy(ptr, p, mm_block->debug.size);
+#else
+ memcpy(ptr, p, orig_size - ZEND_MM_ALIGNED_HEADER_SIZE);
#endif
-void zend_mm_shutdown(zend_mm_heap *heap, int full, int silent TSRMLS_DC)
-{
- zend_mm_chunk *p;
- zend_mm_huge_list *list;
+ heap->cached -= true_size - orig_size;
-#if ZEND_MM_CUSTOM
- if (heap->use_custom_heap) {
- return;
+ index = ZEND_MM_BUCKET_INDEX(orig_size);
+ cache = &heap->cache[index];
+
+ ((zend_mm_free_block*)mm_block)->prev_free_block = *cache;
+ *cache = (zend_mm_free_block*)mm_block;
+ ZEND_MM_SET_MAGIC(mm_block, MEM_BLOCK_CACHED);
+#if ZEND_MM_CACHE_STAT
+ if (++heap->cache_stat[index].count > heap->cache_stat[index].max_count) {
+ heap->cache_stat[index].max_count = heap->cache_stat[index].count;
+ }
+#endif
+
+ HANDLE_UNBLOCK_INTERRUPTIONS();
+ return ptr;
+ }
}
#endif
+ next_block = ZEND_MM_BLOCK_AT(mm_block, orig_size);
+
+ if (ZEND_MM_IS_FREE_BLOCK(next_block)) {
+ ZEND_MM_CHECK_COOKIE(next_block);
+ ZEND_MM_CHECK_BLOCK_LINKAGE(next_block);
+ if (orig_size + ZEND_MM_FREE_BLOCK_SIZE(next_block) >= true_size) {
+ size_t block_size = orig_size + ZEND_MM_FREE_BLOCK_SIZE(next_block);
+ size_t remaining_size = block_size - true_size;
+
+ zend_mm_remove_from_free_list(heap, (zend_mm_free_block *) next_block);
+
+ if (remaining_size < ZEND_MM_ALIGNED_MIN_HEADER_SIZE) {
+ true_size = block_size;
+ ZEND_MM_BLOCK(mm_block, ZEND_MM_USED_BLOCK, true_size);
+ } else {
+ zend_mm_free_block *new_free_block;
+
+ /* prepare new free block */
+ ZEND_MM_BLOCK(mm_block, ZEND_MM_USED_BLOCK, true_size);
+ new_free_block = (zend_mm_free_block *) ZEND_MM_BLOCK_AT(mm_block, true_size);
+ ZEND_MM_BLOCK(new_free_block, ZEND_MM_FREE_BLOCK, remaining_size);
+
+ /* add the new free block to the free list */
+ if (ZEND_MM_IS_FIRST_BLOCK(mm_block) &&
+ ZEND_MM_IS_GUARD_BLOCK(ZEND_MM_BLOCK_AT(new_free_block, remaining_size))) {
+ zend_mm_add_to_rest_list(heap, new_free_block);
+ } else {
+ zend_mm_add_to_free_list(heap, new_free_block);
+ }
+ }
+ ZEND_MM_SET_DEBUG_INFO(mm_block, size, 0, 0);
+ heap->size = heap->size + true_size - orig_size;
+ if (heap->peak < heap->size) {
+ heap->peak = heap->size;
+ }
+ HANDLE_UNBLOCK_INTERRUPTIONS();
+ return p;
+ } else if (ZEND_MM_IS_FIRST_BLOCK(mm_block) &&
+ ZEND_MM_IS_GUARD_BLOCK(ZEND_MM_BLOCK_AT(next_block, ZEND_MM_FREE_BLOCK_SIZE(next_block)))) {
+ zend_mm_remove_from_free_list(heap, (zend_mm_free_block *) next_block);
+ goto realloc_segment;
+ }
+ } else if (ZEND_MM_IS_FIRST_BLOCK(mm_block) && ZEND_MM_IS_GUARD_BLOCK(next_block)) {
+ zend_mm_segment *segment;
+ zend_mm_segment *segment_copy;
+ size_t segment_size;
+ size_t block_size;
+ size_t remaining_size;
+
+realloc_segment:
+ /* segment size, size of block and size of guard block */
+ if (true_size > heap->block_size - (ZEND_MM_ALIGNED_SEGMENT_SIZE + ZEND_MM_ALIGNED_HEADER_SIZE)) {
+ segment_size = true_size+ZEND_MM_ALIGNED_SEGMENT_SIZE+ZEND_MM_ALIGNED_HEADER_SIZE;
+ segment_size = (segment_size + (heap->block_size-1)) & ~(heap->block_size-1);
+ } else {
+ segment_size = heap->block_size;
+ }
+
+ segment_copy = (zend_mm_segment *) ((char *)mm_block - ZEND_MM_ALIGNED_SEGMENT_SIZE);
+ if (segment_size < true_size ||
+ heap->real_size + segment_size - segment_copy->size > heap->limit) {
+ if (ZEND_MM_IS_FREE_BLOCK(next_block)) {
+ zend_mm_add_to_free_list(heap, (zend_mm_free_block *) next_block);
+ }
+#if ZEND_MM_CACHE
+ zend_mm_free_cache(heap);
+#endif
+ HANDLE_UNBLOCK_INTERRUPTIONS();
#if ZEND_DEBUG
- if (!silent) {
- zend_mm_check_leaks(heap TSRMLS_CC);
- }
+ zend_mm_safe_error(heap, "Allowed memory size of %ld bytes exhausted at %s:%d (tried to allocate %ld bytes)", heap->limit, __zend_filename, __zend_lineno, size);
+#else
+ zend_mm_safe_error(heap, "Allowed memory size of %ld bytes exhausted (tried to allocate %ld bytes)", heap->limit, size);
#endif
+ return NULL;
+ }
- /* free huge blocks */
- list = heap->huge_list;
- while (list) {
- zend_mm_huge_list *q = list;
- list = list->next;
- zend_mm_munmap(q->ptr, q->size);
- }
-
- /* move all chunks except of the first one into the cache */
- p = heap->main_chunk->next;
- while (p != heap->main_chunk) {
- zend_mm_chunk *q = p->next;
- p->next = heap->cached_chunks;
- heap->cached_chunks = p;
- p = q;
- heap->chunks_count--;
- heap->cached_chunks_count++;
- }
-
- if (full) {
- /* free all cached chunks */
- while (heap->cached_chunks) {
- p = heap->cached_chunks;
- heap->cached_chunks = p->next;
- zend_mm_munmap(p, ZEND_MM_CHUNK_SIZE);
- }
- /* free the first chunk */
- zend_mm_munmap(heap->main_chunk, ZEND_MM_CHUNK_SIZE);
- } else {
- /* free some cached chunks to keep average count */
- heap->avg_chunks_count = (heap->avg_chunks_count + (double)heap->peak_chunks_count) / 2.0;
- while ((double)heap->cached_chunks_count + 0.9 > heap->avg_chunks_count &&
- heap->cached_chunks) {
- p = heap->cached_chunks;
- heap->cached_chunks = p->next;
- zend_mm_munmap(p, ZEND_MM_CHUNK_SIZE);
- heap->cached_chunks_count--;
- }
- /* clear cached chunks */
- p = heap->cached_chunks;
- while (p != NULL) {
- zend_mm_chunk *q = p->next;
- memset(p, 0, sizeof(zend_mm_chunk));
- p->next = q;
- p = q;
- }
-
- /* reinitialize the first chunk and heap */
- heap->chunks_count = 1;
- heap->peak_chunks_count = 1;
-#if ZEND_MM_STAT || ZEND_MM_LIMIT
- heap->real_size = ZEND_MM_CHUNK_SIZE;
-#endif
-#if ZEND_MM_STAT
- heap->real_peak = ZEND_MM_CHUNK_SIZE;
- heap->size = 0;
- heap->peak = 0;
+ segment = ZEND_MM_STORAGE_REALLOC(segment_copy, segment_size);
+ if (!segment) {
+#if ZEND_MM_CACHE
+ zend_mm_free_cache(heap);
#endif
- heap->huge_list = NULL;
- memset(heap->cache, 0, sizeof(heap->cache));
- p = heap->main_chunk;
- memset(p, 0, ZEND_MM_FIRST_PAGE * ZEND_MM_PAGE_SIZE);
- p->heap = heap;
- p->next = p;
- p->prev = p;
-#if ZEND_DEBUG && defined(ZTS)
- p->thread_id = tsrm_thread_id();
+out_of_memory:
+ HANDLE_UNBLOCK_INTERRUPTIONS();
+#if ZEND_DEBUG
+ zend_mm_safe_error(heap, "Out of memory (allocated %ld) at %s:%d (tried to allocate %ld bytes)", heap->real_size, __zend_filename, __zend_lineno, size);
+#else
+ zend_mm_safe_error(heap, "Out of memory (allocated %ld) (tried to allocate %ld bytes)", heap->real_size, size);
#endif
- p->free_pages = ZEND_MM_PAGES - (ZEND_MM_FIRST_PAGE + 1);
- p->free_tail = ZEND_MM_FIRST_PAGE + 1;
- p->free_map[0] = (1L << (ZEND_MM_FIRST_PAGE + 1)) - 1;
- p->map[0] = ZEND_MM_LRUN(ZEND_MM_FIRST_PAGE);
- p->map[ZEND_MM_FIRST_PAGE] = ZEND_MM_LRUN(1);
+ return NULL;
+ }
+ heap->real_size += segment_size - segment->size;
+ if (heap->real_size > heap->real_peak) {
+ heap->real_peak = heap->real_size;
+ }
+
+ segment->size = segment_size;
+
+ if (segment != segment_copy) {
+ zend_mm_segment **seg = &heap->segments_list;
+ while (*seg != segment_copy) {
+ seg = &(*seg)->next_segment;
+ }
+ *seg = segment;
+ mm_block = (zend_mm_block *) ((char *) segment + ZEND_MM_ALIGNED_SEGMENT_SIZE);
+ ZEND_MM_MARK_FIRST_BLOCK(mm_block);
+ }
+
+ block_size = segment_size - ZEND_MM_ALIGNED_SEGMENT_SIZE - ZEND_MM_ALIGNED_HEADER_SIZE;
+ remaining_size = block_size - true_size;
+
+ /* setup guard block */
+ ZEND_MM_LAST_BLOCK(ZEND_MM_BLOCK_AT(mm_block, block_size));
+
+ if (remaining_size < ZEND_MM_ALIGNED_MIN_HEADER_SIZE) {
+ true_size = block_size;
+ ZEND_MM_BLOCK(mm_block, ZEND_MM_USED_BLOCK, true_size);
+ } else {
+ zend_mm_free_block *new_free_block;
+
+ /* prepare new free block */
+ ZEND_MM_BLOCK(mm_block, ZEND_MM_USED_BLOCK, true_size);
+ new_free_block = (zend_mm_free_block *) ZEND_MM_BLOCK_AT(mm_block, true_size);
+ ZEND_MM_BLOCK(new_free_block, ZEND_MM_FREE_BLOCK, remaining_size);
+
+ /* add the new free block to the free list */
+ zend_mm_add_to_rest_list(heap, new_free_block);
+ }
+
+ ZEND_MM_SET_DEBUG_INFO(mm_block, size, 1, 1);
+
+ heap->size = heap->size + true_size - orig_size;
+ if (heap->peak < heap->size) {
+ heap->peak = heap->size;
+ }
+
+ HANDLE_UNBLOCK_INTERRUPTIONS();
+ return ZEND_MM_DATA_OF(mm_block);
}
-}
-/**************/
-/* PUBLIC API */
-/**************/
+ ptr = _zend_mm_alloc_int(heap, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+#if ZEND_DEBUG || ZEND_MM_HEAP_PROTECTION
+ memcpy(ptr, p, mm_block->debug.size);
+#else
+ memcpy(ptr, p, orig_size - ZEND_MM_ALIGNED_HEADER_SIZE);
+#endif
+ _zend_mm_free_int(heap, p ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ HANDLE_UNBLOCK_INTERRUPTIONS();
+ return ptr;
+}
ZEND_API void *_zend_mm_alloc(zend_mm_heap *heap, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
- return zend_mm_alloc_heap(heap, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ return _zend_mm_alloc_int(heap, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
}
-ZEND_API void _zend_mm_free(zend_mm_heap *heap, void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
+ZEND_API void _zend_mm_free(zend_mm_heap *heap, void *p ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
- zend_mm_free_heap(heap, ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ _zend_mm_free_int(heap, p ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
}
-void *_zend_mm_realloc(zend_mm_heap *heap, void *ptr, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
+ZEND_API void *_zend_mm_realloc(zend_mm_heap *heap, void *ptr, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
- return zend_mm_realloc_heap(heap, ptr, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ return _zend_mm_realloc_int(heap, ptr, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
}
-ZEND_API size_t _zend_mm_block_size(zend_mm_heap *heap, void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
+ZEND_API size_t _zend_mm_block_size(zend_mm_heap *heap, void *p ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
- return zend_mm_size(heap, ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
-}
-
-#if ZEND_MM_SPEC_CT
-# define _BIN_ALLOCATOR_SELECTOR_START(_num, _size, _offset, _elements, _pages, heap, size) \
- ((size <= _size) ? zend_mm_alloc_small_ ## _size(heap) :
-# define _BIN_ALLOCATOR_SELECTOR_END(_num, _size, _offset, _elements, _pages, heap, size) \
- )
-
-# define ZEND_MM_ALLOCATOR(heap, size) \
- ZEND_MM_BINS_INFO(_BIN_ALLOCATOR_SELECTOR_START, heap, size) \
- ((size <= ZEND_MM_MAX_LARGE_SIZE) ? zend_mm_alloc_large(heap, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC) : zend_mm_alloc_huge(heap, size)) \
- ZEND_MM_BINS_INFO(_BIN_ALLOCATOR_SELECTOR_END, heap, size)
+ zend_mm_block *mm_block;
-# define zend_mm_alloc(size) \
- (__builtin_constant_p(size) ? ZEND_MM_ALLOCATOR(_heap, size) : zend_mm_alloc_heap(_heap, size))
+ if (!ZEND_MM_VALID_PTR(p)) {
+ return 0;
+ }
+ mm_block = ZEND_MM_HEADER_OF(p);
+ ZEND_MM_CHECK_PROTECTION(mm_block);
+#if ZEND_DEBUG || ZEND_MM_HEAP_PROTECTION
+ return mm_block->debug.size;
+#else
+ return ZEND_MM_BLOCK_SIZE(mm_block);
#endif
+}
/**********************/
/* Allocation Manager */
ZEND_API int is_zend_mm(TSRMLS_D)
{
-#if ZEND_MM_CUSTOM
- return !AG(mm_heap)->use_custom_heap;
-#else
- return 1;
-#endif
-}
-
-#if !ZEND_DEBUG
-#undef _emalloc
-
-#if ZEND_MM_CUSTOM
-# define ZEND_MM_CUSTOM_ALLOCATOR(size) do { \
- if (UNEXPECTED(AG(mm_heap)->use_custom_heap)) { \
- return AG(mm_heap)->_malloc(size); \
- } \
- } while (0)
-# define ZEND_MM_CUSTOM_DEALLOCATOR(ptr) do { \
- if (UNEXPECTED(AG(mm_heap)->use_custom_heap)) { \
- AG(mm_heap)->_free(ptr); \
- return; \
- } \
- } while (0)
-#else
-# define ZEND_MM_CUSTOM_ALLOCATOR(size)
-# define ZEND_MM_CUSTOM_DEALLOCATOR(ptr)
-#endif
-
-# define _ZEND_BIN_ALLOCATOR(_num, _size, _offset, _elements, _pages, x, y) \
- ZEND_API void* ZEND_FASTCALL _emalloc_ ## _size(void) { \
- TSRMLS_FETCH(); \
- ZEND_MM_CUSTOM_ALLOCATOR(_size); \
- return zend_mm_alloc_small(AG(mm_heap), _size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC); \
- }
-
-ZEND_MM_BINS_INFO(_ZEND_BIN_ALLOCATOR, x, y)
-
-ZEND_API void* ZEND_FASTCALL _emalloc_large(size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
-{
- TSRMLS_FETCH();
-
- ZEND_MM_CUSTOM_ALLOCATOR(size);
- return zend_mm_alloc_large(AG(mm_heap), size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
-}
-
-ZEND_API void* ZEND_FASTCALL _emalloc_huge(size_t size)
-{
- TSRMLS_FETCH();
-
- ZEND_MM_CUSTOM_ALLOCATOR(size);
- return zend_mm_alloc_huge(AG(mm_heap), size);
-}
-
-# define _ZEND_BIN_FREE(_num, _size, _offset, _elements, _pages, x, y) \
- ZEND_API void ZEND_FASTCALL _efree_ ## _size(void *ptr) { \
- TSRMLS_FETCH(); \
- ZEND_MM_CUSTOM_DEALLOCATOR(ptr); \
- { \
- size_t page_offset = ZEND_MM_ALIGNED_OFFSET(ptr, ZEND_MM_CHUNK_SIZE); \
- zend_mm_chunk *chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(ptr, ZEND_MM_CHUNK_SIZE); \
- int page_num = page_offset / ZEND_MM_PAGE_SIZE; \
- ZEND_MM_CHECK(chunk->heap == AG(mm_heap), "zend_mm_heap corrupted"); \
- ZEND_MM_CHECK_THREAD_ID(chunk); \
- if (bin_pages[_num] > 1) { \
- zend_mm_page_info info = chunk->map[page_num]; \
- if (info & ZEND_MM_IS_LRUN) { \
- page_num -= ZEND_MM_NRUN_PAGES(info); \
- } \
- } \
- ZEND_ASSERT(chunk->map[page_num] & ZEND_MM_IS_SRUN); \
- ZEND_ASSERT(ZEND_MM_SRUN_BIN_NUM(chunk->map[page_num]) == _num); \
- zend_mm_free_small(AG(mm_heap), ptr, (zend_mm_bin*)ZEND_MM_PAGE_ADDR(chunk, page_num), _num); \
- } \
- }
-
-ZEND_MM_BINS_INFO(_ZEND_BIN_FREE, x, y)
-
-ZEND_API void ZEND_FASTCALL _efree_large(void *ptr, size_t size)
-{
- TSRMLS_FETCH();
-
- ZEND_MM_CUSTOM_DEALLOCATOR(ptr);
- {
- size_t page_offset = ZEND_MM_ALIGNED_OFFSET(ptr, ZEND_MM_CHUNK_SIZE);
- zend_mm_chunk *chunk = (zend_mm_chunk*)ZEND_MM_ALIGNED_BASE(ptr, ZEND_MM_CHUNK_SIZE);
- int page_num = page_offset / ZEND_MM_PAGE_SIZE;
- int pages_count = ZEND_MM_ALIGNED_SIZE_EX(size, ZEND_MM_PAGE_SIZE) / ZEND_MM_PAGE_SIZE;
-
- ZEND_MM_CHECK(chunk->heap == AG(mm_heap) && ZEND_MM_ALIGNED_OFFSET(page_offset, ZEND_MM_PAGE_SIZE) == 0, "zend_mm_heap corrupted");
- ZEND_MM_CHECK_THREAD_ID(chunk);
- ZEND_ASSERT(chunk->map[page_num] & ZEND_MM_IS_LRUN);
- ZEND_ASSERT(ZEND_MM_LRUN_PAGES(chunk->map[page_num]) == pages_count);
- zend_mm_free_large(AG(mm_heap), chunk, page_num, pages_count);
- }
-}
-
-ZEND_API void ZEND_FASTCALL _efree_huge(void *ptr, size_t size)
-{
- TSRMLS_FETCH();
-
- ZEND_MM_CUSTOM_DEALLOCATOR(ptr);
- // TODO: use size???
- zend_mm_free_huge(AG(mm_heap), ptr);
+ return AG(mm_heap)->use_zend_alloc;
}
-#endif
-ZEND_API void* ZEND_FASTCALL _emalloc(size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
+ZEND_API void *_emalloc(size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
TSRMLS_FETCH();
-#if ZEND_MM_CUSTOM
- if (UNEXPECTED(AG(mm_heap)->use_custom_heap)) {
+ if (UNEXPECTED(!AG(mm_heap)->use_zend_alloc)) {
return AG(mm_heap)->_malloc(size);
}
-#endif
- return zend_mm_alloc_heap(AG(mm_heap), size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ return _zend_mm_alloc_int(AG(mm_heap), size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
}
-ZEND_API void ZEND_FASTCALL _efree(void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
+ZEND_API void _efree(void *ptr ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
TSRMLS_FETCH();
-#if ZEND_MM_CUSTOM
- if (UNEXPECTED(AG(mm_heap)->use_custom_heap)) {
+ if (UNEXPECTED(!AG(mm_heap)->use_zend_alloc)) {
AG(mm_heap)->_free(ptr);
return;
}
-#endif
- zend_mm_free_heap(AG(mm_heap), ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ _zend_mm_free_int(AG(mm_heap), ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
}
-ZEND_API void* ZEND_FASTCALL _erealloc(void *ptr, size_t size, int allow_failure ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
+ZEND_API void *_erealloc(void *ptr, size_t size, int allow_failure ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
TSRMLS_FETCH();
- if (UNEXPECTED(AG(mm_heap)->use_custom_heap)) {
+ if (UNEXPECTED(!AG(mm_heap)->use_zend_alloc)) {
return AG(mm_heap)->_realloc(ptr, size);
}
- return zend_mm_realloc_heap(AG(mm_heap), ptr, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ return _zend_mm_realloc_int(AG(mm_heap), ptr, size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
}
-ZEND_API size_t ZEND_FASTCALL _zend_mem_block_size(void *ptr TSRMLS_DC ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
+ZEND_API size_t _zend_mem_block_size(void *ptr TSRMLS_DC ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
- if (UNEXPECTED(AG(mm_heap)->use_custom_heap)) {
+ if (UNEXPECTED(!AG(mm_heap)->use_zend_alloc)) {
return 0;
}
- return zend_mm_size(AG(mm_heap), ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ return _zend_mm_block_size(AG(mm_heap), ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
}
#if defined(__GNUC__) && (defined(__native_client__) || defined(i386))
#endif
-ZEND_API void* ZEND_FASTCALL _safe_emalloc(size_t nmemb, size_t size, size_t offset ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
+ZEND_API void *_safe_emalloc(size_t nmemb, size_t size, size_t offset ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
return emalloc_rel(safe_address(nmemb, size, offset));
}
-ZEND_API void* ZEND_FASTCALL _safe_malloc(size_t nmemb, size_t size, size_t offset)
+ZEND_API void *_safe_malloc(size_t nmemb, size_t size, size_t offset)
{
return pemalloc(safe_address(nmemb, size, offset), 1);
}
-ZEND_API void* ZEND_FASTCALL _safe_erealloc(void *ptr, size_t nmemb, size_t size, size_t offset ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
+ZEND_API void *_safe_erealloc(void *ptr, size_t nmemb, size_t size, size_t offset ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
return erealloc_rel(ptr, safe_address(nmemb, size, offset));
}
-ZEND_API void* ZEND_FASTCALL _safe_realloc(void *ptr, size_t nmemb, size_t size, size_t offset)
+ZEND_API void *_safe_realloc(void *ptr, size_t nmemb, size_t size, size_t offset)
{
return perealloc(ptr, safe_address(nmemb, size, offset), 1);
}
-ZEND_API void* ZEND_FASTCALL _ecalloc(size_t nmemb, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
+ZEND_API void *_ecalloc(size_t nmemb, size_t size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
void *p;
#ifdef ZEND_SIGNALS
return p;
}
-ZEND_API char* ZEND_FASTCALL _estrdup(const char *s ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
+ZEND_API char *_estrdup(const char *s ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
int length;
char *p;
return p;
}
-ZEND_API char* ZEND_FASTCALL _estrndup(const char *s, uint length ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
+ZEND_API char *_estrndup(const char *s, uint length ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
char *p;
#ifdef ZEND_SIGNALS
}
-ZEND_API char* ZEND_FASTCALL zend_strndup(const char *s, uint length)
+ZEND_API char *zend_strndup(const char *s, uint length)
{
char *p;
#ifdef ZEND_SIGNALS
ZEND_API int zend_set_memory_limit(size_t memory_limit TSRMLS_DC)
{
-#if ZEND_MM_LIMIT
- AG(mm_heap)->limit = (memory_limit >= ZEND_MM_CHUNK_SIZE) ? memory_limit : ZEND_MM_CHUNK_SIZE;
-#endif
+ AG(mm_heap)->limit = (memory_limit >= AG(mm_heap)->block_size) ? memory_limit : AG(mm_heap)->block_size;
+
return SUCCESS;
}
ZEND_API size_t zend_memory_usage(int real_usage TSRMLS_DC)
{
-#if ZEND_MM_STAT
if (real_usage) {
return AG(mm_heap)->real_size;
} else {
size_t usage = AG(mm_heap)->size;
+#if ZEND_MM_CACHE
+ usage -= AG(mm_heap)->cached;
+#endif
return usage;
}
-#endif
- return 0;
}
ZEND_API size_t zend_memory_peak_usage(int real_usage TSRMLS_DC)
{
-#if ZEND_MM_STAT
if (real_usage) {
return AG(mm_heap)->real_peak;
} else {
return AG(mm_heap)->peak;
}
-#endif
- return 0;
}
ZEND_API void shutdown_memory_manager(int silent, int full_shutdown TSRMLS_DC)
static void alloc_globals_ctor(zend_alloc_globals *alloc_globals TSRMLS_DC)
{
-#if ZEND_MM_CUSTOM
char *tmp = getenv("USE_ZEND_ALLOC");
if (tmp && !zend_atoi(tmp, 0)) {
- alloc_globals->mm_heap = malloc(sizeof(zend_mm_heap));
- memset(alloc_globals->mm_heap, 0, sizeof(zend_mm_heap));
- alloc_globals->mm_heap->use_custom_heap = 1;
+ alloc_globals->mm_heap = malloc(sizeof(struct _zend_mm_heap));
+ memset(alloc_globals->mm_heap, 0, sizeof(struct _zend_mm_heap));
+ alloc_globals->mm_heap->use_zend_alloc = 0;
alloc_globals->mm_heap->_malloc = malloc;
alloc_globals->mm_heap->_free = free;
alloc_globals->mm_heap->_realloc = realloc;
- return;
+ } else {
+ alloc_globals->mm_heap = zend_mm_startup();
}
-#endif
- alloc_globals->mm_heap = zend_mm_init();
}
#ifdef ZTS
zend_mm_heap *old_heap;
old_heap = AG(mm_heap);
- AG(mm_heap) = (zend_mm_heap*)new_heap;
- return (zend_mm_heap*)old_heap;
+ AG(mm_heap) = new_heap;
+ return old_heap;
}
ZEND_API zend_mm_storage *zend_mm_get_storage(zend_mm_heap *heap)
{
-// return heap->storage;???
- return NULL;
+ return heap->storage;
}
ZEND_API void zend_mm_set_custom_handlers(zend_mm_heap *heap,
void (*_free)(void*),
void* (*_realloc)(void*, size_t))
{
-#if ZEND_MM_CUSTOM
- zend_mm_heap *_heap = (zend_mm_heap*)heap;
-
- _heap->use_custom_heap = 1;
- _heap->_malloc = _malloc;
- _heap->_free = _free;
- _heap->_realloc = _realloc;
-#endif
+ heap->use_zend_alloc = 0;
+ heap->_malloc = _malloc;
+ heap->_free = _free;
+ heap->_realloc = _realloc;
}
#if ZEND_DEBUG
ZEND_API int _mem_block_check(void *ptr, int silent ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
-// TSRMLS_FETCH();
-//
-// if (!AG(mm_heap)->use_zend_alloc) {
+ TSRMLS_FETCH();
+
+ if (!AG(mm_heap)->use_zend_alloc) {
return 1;
-// }
-// return zend_mm_check_ptr(AG(mm_heap), ptr, silent ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+ }
+ return zend_mm_check_ptr(AG(mm_heap), ptr, silent ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
}
ZEND_API void _full_mem_check(int silent ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC)
{
-// int errors;
-// TSRMLS_FETCH();
-//
-// if (!AG(mm_heap)->use_zend_alloc) {
-// return;
-// }
-//
-// zend_debug_alloc_output("------------------------------------------------\n");
-// zend_debug_alloc_output("Full Memory Check at %s:%d\n" ZEND_FILE_LINE_RELAY_CC);
-//
-// errors = zend_mm_check_heap(AG(mm_heap), silent ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
-//
-// zend_debug_alloc_output("End of full memory check %s:%d (%d errors)\n" ZEND_FILE_LINE_RELAY_CC, errors);
-// zend_debug_alloc_output("------------------------------------------------\n");
+ int errors;
+ TSRMLS_FETCH();
+
+ if (!AG(mm_heap)->use_zend_alloc) {
+ return;
+ }
+
+ zend_debug_alloc_output("------------------------------------------------\n");
+ zend_debug_alloc_output("Full Memory Check at %s:%d\n" ZEND_FILE_LINE_RELAY_CC);
+
+ errors = zend_mm_check_heap(AG(mm_heap), silent ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC);
+
+ zend_debug_alloc_output("End of full memory check %s:%d (%d errors)\n" ZEND_FILE_LINE_RELAY_CC, errors);
+ zend_debug_alloc_output("------------------------------------------------\n");
}
#endif
projects / php / commitdiff