/*
* Copyright (c) 2013 Luca Clementi <luca.clementi@gmail.com>
+ * Copyright (c) 2013-2017 The strace developers.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
# define fopen_for_input fopen
#endif
-#define DPRINTF(F, A, ...) if (debug_flag) error_msg("[unwind(" A ")] " F, __VA_ARGS__)
+#define DPRINTF(F, A, ...) \
+ do { \
+ if (debug_flag) \
+ error_msg("[unwind(" A ")] " F, __VA_ARGS__); \
+ } while (0)
/*
* Keep a sorted array of cache entries,
* Type used in stacktrace capturing
*/
struct call_t {
- struct call_t* next;
- char *output_line;
+ struct call_t *next;
+ char *output_line;
};
struct queue_t {
- struct call_t *tail;
- struct call_t *head;
+ struct call_t *tail;
+ struct call_t *head;
};
static void queue_print(struct queue_t *queue);
tcp->libunwind_ui = _UPT_create(tcp->pid);
if (!tcp->libunwind_ui)
- die_out_of_memory();
+ perror_msg_and_die("_UPT_create");
tcp->queue = xmalloc(sizeof(*tcp->queue));
tcp->queue->head = NULL;
free(tcp->queue);
tcp->queue = NULL;
- delete_mmap_cache(tcp, __FUNCTION__);
+ delete_mmap_cache(tcp, __func__);
_UPT_destroy(tcp->libunwind_ui);
tcp->libunwind_ui = NULL;
* e.g. mmap, mprotect, munmap, execve.
*/
static void
-build_mmap_cache(struct tcb* tcp)
+build_mmap_cache(struct tcb *tcp)
{
FILE *fp;
struct mmap_cache_t *cache_head;
}
void
-unwind_cache_invalidate(struct tcb* tcp)
+unwind_cache_invalidate(struct tcb *tcp)
{
#if SUPPORTED_PERSONALITIES > 1
if (tcp->currpers != DEFAULT_PERSONALITY) {
function_offset,
true_offset);
return 0;
- }
- else if (ip < cur_mmap_cache->start_addr)
+ } else if (ip < cur_mmap_cache->start_addr)
upper = mid - 1;
else
lower = mid + 1;
* after a set_tid_address syscall
* unw_get_reg returns IP == 0
*/
- if(ip)
+ if (ip)
error_action(data, "unexpected_backtracing_error", ip);
return -1;
}
else if (binary_filename)
tprintf(STACK_ENTRY_NOSYMBOL_FMT);
else
- tprintf(STACK_ENTRY_BUG_FMT, __FUNCTION__);
+ tprintf(STACK_ENTRY_BUG_FMT, __func__);
line_ended();
}
unsigned long true_offset,
const char *error)
{
- char *output_line = NULL;
- int n;
-
- if (symbol_name)
- n = asprintf(&output_line, STACK_ENTRY_SYMBOL_FMT);
- else if (binary_filename)
- n = asprintf(&output_line, STACK_ENTRY_NOSYMBOL_FMT);
- else if (error)
- n = true_offset
- ? asprintf(&output_line, STACK_ENTRY_ERROR_WITH_OFFSET_FMT)
- : asprintf(&output_line, STACK_ENTRY_ERROR_FMT);
- else
- n = asprintf(&output_line, STACK_ENTRY_BUG_FMT, __FUNCTION__);
-
- if (n < 0)
- error_msg_and_die("error in asprintf");
-
- return output_line;
+ char *output_line = NULL;
+ int n;
+
+ if (symbol_name)
+ n = asprintf(&output_line, STACK_ENTRY_SYMBOL_FMT);
+ else if (binary_filename)
+ n = asprintf(&output_line, STACK_ENTRY_NOSYMBOL_FMT);
+ else if (error)
+ n = true_offset
+ ? asprintf(&output_line, STACK_ENTRY_ERROR_WITH_OFFSET_FMT)
+ : asprintf(&output_line, STACK_ENTRY_ERROR_FMT);
+ else
+ n = asprintf(&output_line, STACK_ENTRY_BUG_FMT, __func__);
+
+ if (n < 0)
+ error_msg_and_die("error in asprintf");
+
+ return output_line;
}
/*
* printing stack
*/
void
-unwind_print_stacktrace(struct tcb* tcp)
+unwind_print_stacktrace(struct tcb *tcp)
{
#if SUPPORTED_PERSONALITIES > 1
if (tcp->currpers != DEFAULT_PERSONALITY) {
return;
}
#endif
- if (tcp->queue->head) {
- DPRINTF("tcp=%p, queue=%p", "queueprint", tcp, tcp->queue->head);
- queue_print(tcp->queue);
- }
- else if (rebuild_cache_if_invalid(tcp, __FUNCTION__)) {
- DPRINTF("tcp=%p, queue=%p", "stackprint", tcp, tcp->queue->head);
- stacktrace_walk(tcp, print_call_cb, print_error_cb, NULL);
- }
+ if (tcp->queue->head) {
+ DPRINTF("tcp=%p, queue=%p", "queueprint", tcp, tcp->queue->head);
+ queue_print(tcp->queue);
+ } else if (rebuild_cache_if_invalid(tcp, __func__)) {
+ DPRINTF("tcp=%p, queue=%p", "stackprint", tcp, tcp->queue->head);
+ stacktrace_walk(tcp, print_call_cb, print_error_cb, NULL);
+ }
}
/*
if (tcp->queue->head)
error_msg_and_die("bug: unprinted entries in queue");
- if (rebuild_cache_if_invalid(tcp, __FUNCTION__)) {
+ if (rebuild_cache_if_invalid(tcp, __func__)) {
stacktrace_walk(tcp, queue_put_call, queue_put_error,
tcp->queue);
DPRINTF("tcp=%p, queue=%p", "captured", tcp, tcp->queue->head);