* polluting the namespace with lots of stuff...
*
*
- * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1996-2011, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
- * $PostgreSQL: pgsql/src/include/c.h,v 1.209 2006/08/08 18:49:14 momjian Exp $
+ * src/include/c.h
*
*-------------------------------------------------------------------------
*/
#include "pg_config.h"
#include "pg_config_manual.h" /* must be after pg_config.h */
-#if !defined(WIN32) && !defined(__CYGWIN__) /* win32 will include further down */
+#if !defined(WIN32) && !defined(__CYGWIN__) /* win32 will include further
+ * down */
#include "pg_config_os.h" /* must be before any system header files */
#endif
#include "postgres_ext.h"
-#include "pg_trace.h"
-#if defined(_MSC_VER) || defined(__BORLANDC__)
-#define WIN32_ONLY_COMPILER
-#if defined(__BORLANDC__) || (_MSC_VER > 1400)
+#if _MSC_VER >= 1400 || defined(HAVE_CRTDEFS_H)
+#define errcode __msvc_errcode
#include <crtdefs.h>
-#endif
+#undef errcode
#endif
#include <stdio.h>
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
+#ifdef HAVE_STDINT_H
+#include <stdint.h>
+#endif
#include <sys/types.h>
#include <errno.h>
/* Must be before gettext() games below */
#include <locale.h>
-#define _(x) gettext((x))
+#define _(x) gettext(x)
#ifdef ENABLE_NLS
#include <libintl.h>
#else
#define gettext(x) (x)
+#define dgettext(d,x) (x)
+#define ngettext(s,p,n) ((n) == 1 ? (s) : (p))
+#define dngettext(d,s,p,n) ((n) == 1 ? (s) : (p))
#endif
/*
- * Use this to mark strings to be translated by gettext, in places where
- * you don't want an actual function call to occur (eg, constant tables).
+ * Use this to mark string constants as needing translation at some later
+ * time, rather than immediately. This is useful for cases where you need
+ * access to the original string and translated string, and for cases where
+ * immediate translation is not possible, like when initializing global
+ * variables.
+ * http://www.gnu.org/software/autoconf/manual/gettext/Special-cases.html
*/
#define gettext_noop(x) (x)
typedef uint16 bits16; /* >= 16 bits */
typedef uint32 bits32; /* >= 32 bits */
-/*
- * floatN
- * Floating point number, AT LEAST N BITS IN SIZE,
- * used for numerical computations.
- *
- * Since sizeof(floatN) may be > sizeof(char *), always pass
- * floatN by reference.
- *
- * XXX: these typedefs are now deprecated in favor of float4 and float8.
- * They will eventually go away.
- */
-typedef float float32data;
-typedef double float64data;
-typedef float *float32;
-typedef double *float64;
-
/*
* 64-bit integers
*/
#ifndef HAVE_UINT64
typedef unsigned long long int uint64;
#endif
-#else /* not HAVE_LONG_INT_64 and not
- * HAVE_LONG_LONG_INT_64 */
-
-/* Won't actually work, but fall back to long int so that code compiles */
-#ifndef HAVE_INT64
-typedef long int int64;
-#endif
-#ifndef HAVE_UINT64
-typedef unsigned long int uint64;
+#else
+/* neither HAVE_LONG_INT_64 nor HAVE_LONG_LONG_INT_64 */
+#error must have a working 64-bit integer datatype
#endif
-#define INT64_IS_BUSTED
-#endif /* not HAVE_LONG_INT_64 and not
- * HAVE_LONG_LONG_INT_64 */
-
/* Decide if we need to decorate 64-bit constants */
#ifdef HAVE_LL_CONSTANTS
#define INT64CONST(x) ((int64) x##LL)
/* Select timestamp representation (float8 or int64) */
-#if defined(USE_INTEGER_DATETIMES) && !defined(INT64_IS_BUSTED)
+#ifdef USE_INTEGER_DATETIMES
#define HAVE_INT64_TIMESTAMP
#endif
typedef uint32 TransactionId;
+typedef uint32 LocalTransactionId;
+
typedef uint32 SubTransactionId;
#define InvalidSubTransactionId ((SubTransactionId) 0)
* NOTE: for TOASTable types, this is an oversimplification, since the value
* may be compressed or moved out-of-line. However datatype-specific routines
* are mostly content to deal with de-TOASTed values only, and of course
- * client-side routines should never see a TOASTed value. See postgres.h for
- * details of the TOASTed form.
+ * client-side routines should never see a TOASTed value. But even in a
+ * de-TOASTed value, beware of touching vl_len_ directly, as its representation
+ * is no longer convenient. It's recommended that code always use the VARDATA,
+ * VARSIZE, and SET_VARSIZE macros instead of relying on direct mentions of
+ * the struct fields. See postgres.h for details of the TOASTed form.
* ----------------
*/
struct varlena
{
- int32 vl_len;
+ char vl_len_[4]; /* Do not touch this field directly! */
char vl_dat[1];
};
*/
typedef struct
{
- int32 size; /* these fields must match ArrayType! */
+ int32 vl_len_; /* these fields must match ArrayType! */
int ndim; /* always 1 for int2vector */
int32 dataoffset; /* always 0 for int2vector */
Oid elemtype;
typedef struct
{
- int32 size; /* these fields must match ArrayType! */
+ int32 vl_len_; /* these fields must match ArrayType! */
int ndim; /* always 1 for oidvector */
int32 dataoffset; /* always 0 for oidvector */
Oid elemtype;
} oidvector; /* VARIABLE LENGTH STRUCT */
/*
- * We want NameData to have length NAMEDATALEN and int alignment,
- * because that's how the data type 'name' is defined in pg_type.
- * Use a union to make sure the compiler agrees. Note that NAMEDATALEN
- * must be a multiple of sizeof(int), else sizeof(NameData) will probably
- * not come out equal to NAMEDATALEN.
+ * Representation of a Name: effectively just a C string, but null-padded to
+ * exactly NAMEDATALEN bytes. The use of a struct is historical.
*/
-typedef union nameData
+typedef struct nameData
{
char data[NAMEDATALEN];
- int alignmentDummy;
} NameData;
typedef NameData *Name;
/*
* Support macros for escaping strings. escape_backslash should be TRUE
- * if generating a non-standard-conforming string. Prefixing a string
+ * if generating a non-standard-conforming string. Prefixing a string
* with ESCAPE_STRING_SYNTAX guarantees it is non-standard-conforming.
* Beware of multiple evaluation of the "ch" argument!
*/
* True iff pointer is properly aligned to point to the given type.
*/
#define PointerIsAligned(pointer, type) \
- (((long)(pointer) % (sizeof (type))) == 0)
+ (((intptr_t)(pointer) % (sizeof (type))) == 0)
#define OidIsValid(objectId) ((bool) ((objectId) != InvalidOid))
/* ----------------
* Alignment macros: align a length or address appropriately for a given type.
+ * The fooALIGN() macros round up to a multiple of the required alignment,
+ * while the fooALIGN_DOWN() macros round down. The latter are more useful
+ * for problems like "how many X-sized structures will fit in a page?".
*
- * There used to be some incredibly crufty platform-dependent hackery here,
- * but now we rely on the configure script to get the info for us. Much nicer.
- *
- * NOTE: TYPEALIGN will not work if ALIGNVAL is not a power of 2.
- * That case seems extremely unlikely to occur in practice, however.
+ * NOTE: TYPEALIGN[_DOWN] will not work if ALIGNVAL is not a power of 2.
+ * That case seems extremely unlikely to be needed in practice, however.
* ----------------
*/
#define TYPEALIGN(ALIGNVAL,LEN) \
- (((long) (LEN) + ((ALIGNVAL) - 1)) & ~((long) ((ALIGNVAL) - 1)))
+ (((intptr_t) (LEN) + ((ALIGNVAL) - 1)) & ~((intptr_t) ((ALIGNVAL) - 1)))
#define SHORTALIGN(LEN) TYPEALIGN(ALIGNOF_SHORT, (LEN))
#define INTALIGN(LEN) TYPEALIGN(ALIGNOF_INT, (LEN))
/* MAXALIGN covers only built-in types, not buffers */
#define BUFFERALIGN(LEN) TYPEALIGN(ALIGNOF_BUFFER, (LEN))
+#define TYPEALIGN_DOWN(ALIGNVAL,LEN) \
+ (((intptr_t) (LEN)) & ~((intptr_t) ((ALIGNVAL) - 1)))
+
+#define SHORTALIGN_DOWN(LEN) TYPEALIGN_DOWN(ALIGNOF_SHORT, (LEN))
+#define INTALIGN_DOWN(LEN) TYPEALIGN_DOWN(ALIGNOF_INT, (LEN))
+#define LONGALIGN_DOWN(LEN) TYPEALIGN_DOWN(ALIGNOF_LONG, (LEN))
+#define DOUBLEALIGN_DOWN(LEN) TYPEALIGN_DOWN(ALIGNOF_DOUBLE, (LEN))
+#define MAXALIGN_DOWN(LEN) TYPEALIGN_DOWN(MAXIMUM_ALIGNOF, (LEN))
/* ----------------------------------------------------------------
* Section 6: widely useful macros
int _val = (val); \
Size _len = (len); \
\
- if ((((long) _vstart) & LONG_ALIGN_MASK) == 0 && \
+ if ((((intptr_t) _vstart) & LONG_ALIGN_MASK) == 0 && \
(_len & LONG_ALIGN_MASK) == 0 && \
_val == 0 && \
_len <= MEMSET_LOOP_LIMIT && \
#define STATUS_WAITING (2)
+/* gettext domain name mangling */
+
+/*
+ * To better support parallel installations of major PostgeSQL
+ * versions as well as parallel installations of major library soname
+ * versions, we mangle the gettext domain name by appending those
+ * version numbers. The coding rule ought to be that whereever the
+ * domain name is mentioned as a literal, it must be wrapped into
+ * PG_TEXTDOMAIN(). The macros below do not work on non-literals; but
+ * that is somewhat intentional because it avoids having to worry
+ * about multiple states of premangling and postmangling as the values
+ * are being passed around.
+ *
+ * Make sure this matches the installation rules in nls-global.mk.
+ */
+
+/* need a second indirection because we want to stringize the macro value, not the name */
+#define CppAsString2(x) CppAsString(x)
+
+#ifdef SO_MAJOR_VERSION
+#define PG_TEXTDOMAIN(domain) (domain CppAsString2(SO_MAJOR_VERSION) "-" PG_MAJORVERSION)
+#else
+#define PG_TEXTDOMAIN(domain) (domain "-" PG_MAJORVERSION)
+#endif
+
+
/* ----------------------------------------------------------------
* Section 8: system-specific hacks
*
*/
#if defined(WIN32) || defined(__CYGWIN__)
#define PG_BINARY O_BINARY
+#define PG_BINARY_A "ab"
#define PG_BINARY_R "rb"
#define PG_BINARY_W "wb"
#else
#define PG_BINARY 0
+#define PG_BINARY_A "a"
#define PG_BINARY_R "r"
#define PG_BINARY_W "w"
#endif
-#if defined(sun) && defined(__sparc__) && !defined(__SVR4)
-#include <unistd.h>
-#endif
-
-/* These are for things that are one way on Unix and another on NT */
-#define NULL_DEV "/dev/null"
-
/*
* Provide prototypes for routines not present in a particular machine's
* standard C library.
extern int
snprintf(char *str, size_t count, const char *fmt,...)
/* This extension allows gcc to check the format string */
-__attribute__((format(printf, 3, 4)));
+__attribute__((format(PG_PRINTF_ATTRIBUTE, 3, 4)));
#endif
#if !HAVE_DECL_VSNPRINTF
#define memmove(d, s, c) bcopy(s, d, c)
#endif
-#ifndef DLLIMPORT
-#define DLLIMPORT /* no special DLL markers on most ports */
+/* no special DLL markers on most ports */
+#ifndef PGDLLIMPORT
+#define PGDLLIMPORT
+#endif
+#ifndef PGDLLEXPORT
+#define PGDLLEXPORT
#endif
/*
#define HAVE_STRTOULL 1
#endif
+/*
+ * We assume if we have these two functions, we have their friends too, and
+ * can use the wide-character functions.
+ */
+#if defined(HAVE_WCSTOMBS) && defined(HAVE_TOWLOWER)
+#define USE_WIDE_UPPER_LOWER
+#endif
+
/* EXEC_BACKEND defines */
#ifdef EXEC_BACKEND
#define NON_EXEC_STATIC
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