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Data Structures | Macros | Typedefs | Functions
c.h File Reference
#include "pg_config.h"
#include "pg_config_manual.h"
#include "pg_config_os.h"
#include <assert.h>
#include <inttypes.h>
#include <stdalign.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stddef.h>
#include <stdarg.h>
#include <stdint.h>
#include <sys/types.h>
#include <errno.h>
#include <locale.h>
#include "postgres_ext.h"
#include <stdbool.h>
#include "port.h"
Include dependency graph for c.h:
This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Data Structures

struct  varlena
 
struct  int2vector
 
struct  oidvector
 
struct  nameData
 
struct  PGAlignedBlock
 
struct  PGIOAlignedBlock
 
struct  PGAlignedXLogBlock
 

Macros

#define __has_attribute(attribute)   0
 
#define pg_attribute_unused()
 
#define pg_fallthrough
 
#define pg_nodiscard
 
#define pg_noreturn
 
#define pg_attribute_no_sanitize_address()
 
#define pg_attribute_no_sanitize_alignment()
 
#define pg_attribute_nonnull(...)
 
#define pg_attribute_target(...)
 
#define PG_USED_FOR_ASSERTS_ONLY   pg_attribute_unused()
 
#define PG_PRINTF_ATTRIBUTE   PG_C_PRINTF_ATTRIBUTE
 
#define pg_attribute_format_arg(a)
 
#define pg_attribute_printf(f, a)
 
#define pg_attribute_always_inline   inline
 
#define pg_noinline
 
#define pg_attribute_cold
 
#define pg_attribute_hot
 
#define pg_unreachable()   abort()
 
#define pg_assume(expr)   ((void) 0)
 
#define likely(x)   ((x) != 0)
 
#define unlikely(x)   ((x) != 0)
 
#define CppAsString(identifier)   #identifier
 
#define CppAsString2(x)   CppAsString(x)
 
#define CppConcat(x, y)   x##y
 
#define VA_ARGS_NARGS(...)
 
#define VA_ARGS_NARGS_(_01, _02, _03, _04, _05, _06, _07, _08, _09, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, _31, _32, _33, _34, _35, _36, _37, _38, _39, _40, _41, _42, _43, _44, _45, _46, _47, _48, _49, _50, _51, _52, _53, _54, _55, _56, _57, _58, _59, _60, _61, _62, _63, N, ...)    (N)
 
#define FLEXIBLE_ARRAY_MEMBER   /* empty */
 
#define INT64CONST(x)   INT64_C(x)
 
#define UINT64CONST(x)   UINT64_C(x)
 
#define INT64_FORMAT   "%" PRId64
 
#define UINT64_FORMAT   "%" PRIu64
 
#define OID8_FORMAT   "%" PRIu64
 
#define PG_INT8_MIN   INT8_MIN
 
#define PG_INT8_MAX   INT8_MAX
 
#define PG_UINT8_MAX   UINT8_MAX
 
#define PG_INT16_MIN   INT16_MIN
 
#define PG_INT16_MAX   INT16_MAX
 
#define PG_UINT16_MAX   UINT16_MAX
 
#define PG_INT32_MIN   INT32_MIN
 
#define PG_INT32_MAX   INT32_MAX
 
#define PG_UINT32_MAX   UINT32_MAX
 
#define PG_INT64_MIN   INT64_MIN
 
#define PG_INT64_MAX   INT64_MAX
 
#define PG_UINT64_MAX   UINT64_MAX
 
#define HAVE_INT64_TIMESTAMP
 
#define FLOAT8PASSBYVAL   true
 
#define InvalidSubTransactionId   ((SubTransactionId) 0)
 
#define TopSubTransactionId   ((SubTransactionId) 1)
 
#define FirstCommandId   ((CommandId) 0)
 
#define InvalidCommandId   (~(CommandId)0)
 
#define InvalidOid8   ((Oid8) 0)
 
#define OID8_MAX   UINT64_MAX
 
#define VARHDRSZ   ((int32) sizeof(int32))
 
#define NameStr(name)   ((name).data)
 
#define BoolIsValid(boolean)   ((boolean) == false || (boolean) == true)
 
#define PointerIsAligned(pointer, type)    (((uintptr_t)(pointer) % (sizeof (type))) == 0)
 
#define OffsetToPointer(base, offset)    ((void *)((char *) base + offset))
 
#define OidIsValid(objectId)   ((bool) ((objectId) != InvalidOid))
 
#define Oid8IsValid(objectId)   ((bool) ((objectId) != InvalidOid8))
 
#define RegProcedureIsValid(p)   OidIsValid(p)
 
#define lengthof(array)   (sizeof (array) / sizeof ((array)[0]))
 
#define TYPEALIGN(ALIGNVAL, LEN)    (((uintptr_t) (LEN) + ((ALIGNVAL) - 1)) & ~((uintptr_t) ((ALIGNVAL) - 1)))
 
#define SHORTALIGN(LEN)   TYPEALIGN(ALIGNOF_SHORT, (LEN))
 
#define INTALIGN(LEN)   TYPEALIGN(ALIGNOF_INT, (LEN))
 
#define INT64ALIGN(LEN)   TYPEALIGN(ALIGNOF_INT64_T, (LEN))
 
#define DOUBLEALIGN(LEN)   TYPEALIGN(ALIGNOF_DOUBLE, (LEN))
 
#define MAXALIGN(LEN)   TYPEALIGN(MAXIMUM_ALIGNOF, (LEN))
 
#define BUFFERALIGN(LEN)   TYPEALIGN(ALIGNOF_BUFFER, (LEN))
 
#define CACHELINEALIGN(LEN)   TYPEALIGN(PG_CACHE_LINE_SIZE, (LEN))
 
#define TYPEALIGN_DOWN(ALIGNVAL, LEN)    (((uintptr_t) (LEN)) & ~((uintptr_t) ((ALIGNVAL) - 1)))
 
#define SHORTALIGN_DOWN(LEN)   TYPEALIGN_DOWN(ALIGNOF_SHORT, (LEN))
 
#define INTALIGN_DOWN(LEN)   TYPEALIGN_DOWN(ALIGNOF_INT, (LEN))
 
#define INT64ALIGN_DOWN(LEN)   TYPEALIGN_DOWN(ALIGNOF_INT64_T, (LEN))
 
#define DOUBLEALIGN_DOWN(LEN)   TYPEALIGN_DOWN(ALIGNOF_DOUBLE, (LEN))
 
#define MAXALIGN_DOWN(LEN)   TYPEALIGN_DOWN(MAXIMUM_ALIGNOF, (LEN))
 
#define BUFFERALIGN_DOWN(LEN)   TYPEALIGN_DOWN(ALIGNOF_BUFFER, (LEN))
 
#define TYPEALIGN64(ALIGNVAL, LEN)    (((uint64) (LEN) + ((ALIGNVAL) - 1)) & ~((uint64) ((ALIGNVAL) - 1)))
 
#define MAXALIGN64(LEN)   TYPEALIGN64(MAXIMUM_ALIGNOF, (LEN))
 
#define Assert(condition)   ((void)true)
 
#define AssertMacro(condition)   ((void)true)
 
#define AssertPointerAlignment(ptr, bndr)    Assert(TYPEALIGN(bndr, (uintptr_t)(ptr)) == (uintptr_t)(ptr))
 
#define StaticAssertDecl(condition, errmessage)    static_assert(condition, errmessage)
 
#define StaticAssertStmt(condition, errmessage)    do { static_assert(condition, errmessage); } while(0)
 
#define StaticAssertExpr(condition, errmessage)    ((void) sizeof(struct {static_assert(condition, errmessage); char a;}))
 
#define StaticAssertVariableIsOfType(varname, typename)
 
#define StaticAssertVariableIsOfTypeMacro(varname, typename)
 
#define Max(x, y)   ((x) > (y) ? (x) : (y))
 
#define Min(x, y)   ((x) < (y) ? (x) : (y))
 
#define SIZE_T_ALIGN_MASK   (sizeof(size_t) - 1)
 
#define MemSet(start, val, len)
 
#define MemSetAligned(start, val, len)
 
#define FLOAT4_FITS_IN_INT16(num)    ((num) >= (float4) PG_INT16_MIN && (num) < -((float4) PG_INT16_MIN))
 
#define FLOAT4_FITS_IN_INT32(num)    ((num) >= (float4) PG_INT32_MIN && (num) < -((float4) PG_INT32_MIN))
 
#define FLOAT4_FITS_IN_INT64(num)    ((num) >= (float4) PG_INT64_MIN && (num) < -((float4) PG_INT64_MIN))
 
#define FLOAT8_FITS_IN_INT16(num)    ((num) >= (float8) PG_INT16_MIN && (num) < -((float8) PG_INT16_MIN))
 
#define FLOAT8_FITS_IN_INT32(num)    ((num) >= (float8) PG_INT32_MIN && (num) < -((float8) PG_INT32_MIN))
 
#define FLOAT8_FITS_IN_INT64(num)    ((num) >= (float8) PG_INT64_MIN && (num) < -((float8) PG_INT64_MIN))
 
#define INVERT_COMPARE_RESULT(var)    ((var) = ((var) < 0) ? 1 : -(var))
 
#define HIGHBIT   (0x80)
 
#define IS_HIGHBIT_SET(ch)   ((unsigned char)(ch) & HIGHBIT)
 
#define SQL_STR_DOUBLE(ch, escape_backslash)    ((ch) == '\'' || ((ch) == '\\' && (escape_backslash)))
 
#define ESCAPE_STRING_SYNTAX   'E'
 
#define STATUS_OK   (0)
 
#define STATUS_ERROR   (-1)
 
#define STATUS_EOF   (-2)
 
#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))
 
#define _(x)   gettext(x)
 
#define gettext_noop(x)   (x)
 
#define PG_TEXTDOMAIN(domain)   (domain "-" PG_MAJORVERSION)
 
#define unconstify(underlying_type, expr)
 
#define unvolatize(underlying_type, expr)
 
#define PG_BINARY   0
 
#define PG_BINARY_A   "a"
 
#define PG_BINARY_R   "r"
 
#define PG_BINARY_W   "w"
 
#define PGDLLIMPORT
 
#define PGDLLEXPORT
 
#define SIGNAL_ARGS   int postgres_signal_arg
 

Typedefs

typedef void(* pg_funcptr_t) (void)
 
typedef void * Pointer
 
typedef int8_t int8
 
typedef int16_t int16
 
typedef int32_t int32
 
typedef int64_t int64
 
typedef uint8_t uint8
 
typedef uint16_t uint16
 
typedef uint32_t uint32
 
typedef uint64_t uint64
 
typedef uint8 bits8
 
typedef uint16 bits16
 
typedef uint32 bits32
 
typedef size_t Size
 
typedef unsigned int Index
 
typedef signed int Offset
 
typedef float float4
 
typedef double float8
 
typedef Oid regproc
 
typedef regproc RegProcedure
 
typedef uint32 TransactionId
 
typedef uint32 LocalTransactionId
 
typedef uint32 SubTransactionId
 
typedef TransactionId MultiXactId
 
typedef uint64 MultiXactOffset
 
typedef uint32 CommandId
 
typedef uint64 Oid8
 
typedef struct varlena varlena
 
typedef varlena bytea
 
typedef varlena text
 
typedef varlena BpChar
 
typedef varlena VarChar
 
typedef struct nameData NameData
 
typedef NameData * Name
 
typedef struct PGAlignedBlock PGAlignedBlock
 
typedef struct PGIOAlignedBlock PGIOAlignedBlock
 
typedef struct PGAlignedXLogBlock PGAlignedXLogBlock
 
typedef uint16_t char16_t
 
typedef uint32_t char32_t
 

Functions

pg_noreturn void ExceptionalCondition (const char *conditionName, const char *fileName, int lineNumber)
 
int fdatasync (int fd)
 

Macro Definition Documentation

◆ _

#define _ (   x)    gettext(x)

Definition at line 1258 of file c.h.

◆ __has_attribute

#define __has_attribute (   attribute)    0

Definition at line 133 of file c.h.

◆ Assert

#define Assert (   condition)    ((void)true)

Definition at line 927 of file c.h.

◆ AssertMacro

#define AssertMacro (   condition)    ((void)true)

Definition at line 928 of file c.h.

◆ AssertPointerAlignment

#define AssertPointerAlignment (   ptr,
  bndr 
)     Assert(TYPEALIGN(bndr, (uintptr_t)(ptr)) == (uintptr_t)(ptr))

Definition at line 962 of file c.h.

999 { static_assert(condition, errmessage); } while(0)
1000
1001/*
1002 * StaticAssertExpr() is for use in an expression.
1003 *
1004 * See <https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3715.pdf> for some
1005 * rationale for the precise behavior of this implementation. See
1006 * <https://stackoverflow.com/questions/31311748> about the C++
1007 * implementation.
1008 *
1009 * For compilers that don't support this, we fall back on a kluge that assumes
1010 * the compiler will complain about a negative width for a struct bit-field.
1011 * This will not include a helpful error message, but it beats not getting an
1012 * error at all.
1013 */
1014#ifndef __cplusplus
1015#if !defined(_MSC_VER) || _MSC_VER >= 1933
1016#define StaticAssertExpr(condition, errmessage) \
1017 ((void) sizeof(struct {static_assert(condition, errmessage); char a;}))
1018#else /* _MSC_VER < 1933 */
1019/*
1020 * This compiler is buggy and fails to compile the previous variant; use a
1021 * fallback implementation.
1022 */
1023#define StaticAssertExpr(condition, errmessage) \
1024 ((void) sizeof(struct { int static_assert_failure : (condition) ? 1 : -1; }))
1025#endif /* _MSC_VER < 1933 */
1026#else /* __cplusplus */
1027#define StaticAssertExpr(condition, errmessage) \
1028 ([]{static_assert(condition, errmessage);})
1029#endif
1030
1031
1032/*
1033 * Compile-time checks that a variable (or expression) has the specified type.
1034 *
1035 * StaticAssertVariableIsOfType() can be used as a declaration.
1036 * StaticAssertVariableIsOfTypeMacro() is intended for use in macros, eg
1037 * #define foo(x) (StaticAssertVariableIsOfTypeMacro(x, int), bar(x))
1038 *
1039 * If we don't have __builtin_types_compatible_p, we can still assert that
1040 * the types have the same size. This is far from ideal (especially on 32-bit
1041 * platforms) but it provides at least some coverage.
1042 */
1043#ifdef HAVE__BUILTIN_TYPES_COMPATIBLE_P
1044#define StaticAssertVariableIsOfType(varname, typename) \
1045 StaticAssertDecl(__builtin_types_compatible_p(typeof(varname), typename), \
1046 CppAsString(varname) " does not have type " CppAsString(typename))
1047#define StaticAssertVariableIsOfTypeMacro(varname, typename) \
1048 (StaticAssertExpr(__builtin_types_compatible_p(typeof(varname), typename), \
1049 CppAsString(varname) " does not have type " CppAsString(typename)))
1050#else /* !HAVE__BUILTIN_TYPES_COMPATIBLE_P */
1051#define StaticAssertVariableIsOfType(varname, typename) \
1052 StaticAssertDecl(sizeof(varname) == sizeof(typename), \
1053 CppAsString(varname) " does not have type " CppAsString(typename))
1054#define StaticAssertVariableIsOfTypeMacro(varname, typename) \
1055 (StaticAssertExpr(sizeof(varname) == sizeof(typename), \
1056 CppAsString(varname) " does not have type " CppAsString(typename)))
1057#endif /* HAVE__BUILTIN_TYPES_COMPATIBLE_P */
1058
1059
1060/* ----------------------------------------------------------------
1061 * Section 7: widely useful macros
1062 * ----------------------------------------------------------------
1063 */
1064/*
1065 * Max
1066 * Return the maximum of two numbers.
1067 */
1068#define Max(x, y) ((x) > (y) ? (x) : (y))
1069
1070/*
1071 * Min
1072 * Return the minimum of two numbers.
1073 */
1074#define Min(x, y) ((x) < (y) ? (x) : (y))
1075
1076
1077/* Get a bit mask of the bits set in non-size_t aligned addresses */
1078#define SIZE_T_ALIGN_MASK (sizeof(size_t) - 1)
1079
1080/*
1081 * MemSet
1082 * Exactly the same as standard library function memset(), but considerably
1083 * faster for zeroing small size_t-aligned structures (such as parsetree
1084 * nodes). This has to be a macro because the main point is to avoid
1085 * function-call overhead. However, we have also found that the loop is
1086 * faster than native libc memset() on some platforms, even those with
1087 * assembler memset() functions. More research needs to be done, perhaps
1088 * with MEMSET_LOOP_LIMIT tests in configure.
1089 */
1090#define MemSet(start, val, len) \
1091 do \
1092 { \
1093 /* must be void* because we don't know if it is size_t aligned yet */ \
1094 void *_vstart = (void *) (start); \
1095 int _val = (val); \
1096 Size _len = (len); \
1097\
1098 if ((((uintptr_t) _vstart) & SIZE_T_ALIGN_MASK) == 0 && \
1099 (_len & SIZE_T_ALIGN_MASK) == 0 && \
1100 _val == 0 && \
1101 _len <= MEMSET_LOOP_LIMIT && \
1102 /* \
1103 * If MEMSET_LOOP_LIMIT == 0, optimizer should find \
1104 * the whole "if" false at compile time. \
1105 */ \
1106 MEMSET_LOOP_LIMIT != 0) \
1107 { \
1108 size_t *_start = (size_t *) _vstart; \
1109 size_t *_stop = (size_t *) ((char *) _start + _len); \
1110 while (_start < _stop) \
1111 *_start++ = 0; \
1112 } \
1113 else \
1114 memset(_vstart, _val, _len); \
1115 } while (0)
1116
1117/*
1118 * MemSetAligned is the same as MemSet except it omits the test to see if
1119 * "start" is size_t-aligned. This is okay to use if the caller knows
1120 * a-priori that the pointer is suitably aligned (typically, because he just
1121 * got it from palloc(), which always delivers a max-aligned pointer).
1122 */
1123#define MemSetAligned(start, val, len) \
1124 do \
1125 { \
1126 size_t *_start = (size_t *) (start); \
1127 int _val = (val); \
1128 Size _len = (len); \
1129\
1130 if ((_len & SIZE_T_ALIGN_MASK) == 0 && \
1131 _val == 0 && \
1132 _len <= MEMSET_LOOP_LIMIT && \
1133 MEMSET_LOOP_LIMIT != 0) \
1134 { \
1135 size_t *_stop = (size_t *) ((char *) _start + _len); \
1136 while (_start < _stop) \
1137 *_start++ = 0; \
1138 } \
1139 else \
1140 memset(_start, _val, _len); \
1141 } while (0)
1142
1143
1144/*
1145 * Macros for range-checking float values before converting to integer.
1146 * We must be careful here that the boundary values are expressed exactly
1147 * in the float domain. PG_INTnn_MIN is an exact power of 2, so it will
1148 * be represented exactly; but PG_INTnn_MAX isn't, and might get rounded
1149 * off, so avoid using that.
1150 * The input must be rounded to an integer beforehand, typically with rint(),
1151 * else we might draw the wrong conclusion about close-to-the-limit values.
1152 * These macros will do the right thing for Inf, but not necessarily for NaN,
1153 * so check isnan(num) first if that's a possibility.
1154 */
1155#define FLOAT4_FITS_IN_INT16(num) \
1156 ((num) >= (float4) PG_INT16_MIN && (num) < -((float4) PG_INT16_MIN))
1157#define FLOAT4_FITS_IN_INT32(num) \
1158 ((num) >= (float4) PG_INT32_MIN && (num) < -((float4) PG_INT32_MIN))
1159#define FLOAT4_FITS_IN_INT64(num) \
1160 ((num) >= (float4) PG_INT64_MIN && (num) < -((float4) PG_INT64_MIN))
1161#define FLOAT8_FITS_IN_INT16(num) \
1162 ((num) >= (float8) PG_INT16_MIN && (num) < -((float8) PG_INT16_MIN))
1163#define FLOAT8_FITS_IN_INT32(num) \
1164 ((num) >= (float8) PG_INT32_MIN && (num) < -((float8) PG_INT32_MIN))
1165#define FLOAT8_FITS_IN_INT64(num) \
1166 ((num) >= (float8) PG_INT64_MIN && (num) < -((float8) PG_INT64_MIN))
1167
1168
1169/* ----------------------------------------------------------------
1170 * Section 8: random stuff
1171 * ----------------------------------------------------------------
1172 */
1173
1174/*
1175 * Invert the sign of a qsort-style comparison result, ie, exchange negative
1176 * and positive integer values, being careful not to get the wrong answer
1177 * for INT_MIN. The argument should be an integral variable.
1178 */
1179#define INVERT_COMPARE_RESULT(var) \
1180 ((var) = ((var) < 0) ? 1 : -(var))
1181
1182/*
1183 * Use this, not "char buf[BLCKSZ]", to declare a field or local variable
1184 * holding a page buffer, if that page might be accessed as a page. Otherwise
1185 * the variable might be under-aligned, causing problems on alignment-picky
1186 * hardware.
1187 */
1188typedef struct PGAlignedBlock
1189{
1190 alignas(MAXIMUM_ALIGNOF) char data[BLCKSZ];
1191} PGAlignedBlock;
1192
1193/*
1194 * alignas with extended alignments is buggy in g++ < 9. As a simple
1195 * workaround, we disable these definitions in that case.
1196 *
1197 * <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89357>
1198 */
1199#if !(defined(__cplusplus) && defined(__GNUC__) && !defined(__clang__) && __GNUC__ < 9)
1200
1201/*
1202 * Use this to declare a field or local variable holding a page buffer, if that
1203 * page might be accessed as a page or passed to an SMgr I/O function. If
1204 * allocating using the MemoryContext API, the aligned allocation functions
1205 * should be used with PG_IO_ALIGN_SIZE. This alignment may be more efficient
1206 * for I/O in general, but may be strictly required on some platforms when
1207 * using direct I/O.
1208 */
1209typedef struct PGIOAlignedBlock
1210{
1211 alignas(PG_IO_ALIGN_SIZE) char data[BLCKSZ];
1212} PGIOAlignedBlock;
1213
1214/* Same, but for an XLOG_BLCKSZ-sized buffer */
1215typedef struct PGAlignedXLogBlock
1216{
1217 alignas(PG_IO_ALIGN_SIZE) char data[XLOG_BLCKSZ];
1218} PGAlignedXLogBlock;
1219
1220#else /* (g++ < 9) */
1221
1222/* Allow these types to be used as abstract types when using old g++ */
1223typedef struct PGIOAlignedBlock PGIOAlignedBlock;
1224typedef struct PGAlignedXLogBlock PGAlignedXLogBlock;
1225
1226#endif /* !(g++ < 9) */
1227
1228/* msb for char */
1229#define HIGHBIT (0x80)
1230#define IS_HIGHBIT_SET(ch) ((unsigned char)(ch) & HIGHBIT)
1231
1232/*
1233 * Support macros for escaping strings. escape_backslash should be true
1234 * if generating a non-standard-conforming string. Prefixing a string
1235 * with ESCAPE_STRING_SYNTAX guarantees it is non-standard-conforming.
1236 * Beware of multiple evaluation of the "ch" argument!
1237 */
1238#define SQL_STR_DOUBLE(ch, escape_backslash) \
1239 ((ch) == '\'' || ((ch) == '\\' && (escape_backslash)))
1240
1241#define ESCAPE_STRING_SYNTAX 'E'
1242
1243
1244#define STATUS_OK (0)
1245#define STATUS_ERROR (-1)
1246#define STATUS_EOF (-2)
1247
1248/*
1249 * gettext support
1250 */
1251
1252#ifndef ENABLE_NLS
1253/* stuff we'd otherwise get from <libintl.h> */
1254#define gettext(x) (x)
1255#define dgettext(d,x) (x)
1256#define ngettext(s,p,n) ((n) == 1 ? (s) : (p))
1257#define dngettext(d,s,p,n) ((n) == 1 ? (s) : (p))
1258#endif
1259
1260#define _(x) gettext(x)
1261
1262/*
1263 * Use this to mark string constants as needing translation at some later
1264 * time, rather than immediately. This is useful for cases where you need
1265 * access to the original string and translated string, and for cases where
1266 * immediate translation is not possible, like when initializing global
1267 * variables.
1268 *
1269 * https://www.gnu.org/software/gettext/manual/html_node/Special-cases.html
1270 */
1271#define gettext_noop(x) (x)
1272
1273/*
1274 * To better support parallel installations of major PostgreSQL
1275 * versions as well as parallel installations of major library soname
1276 * versions, we mangle the gettext domain name by appending those
1277 * version numbers. The coding rule ought to be that wherever the
1278 * domain name is mentioned as a literal, it must be wrapped into
1279 * PG_TEXTDOMAIN(). The macros below do not work on non-literals; but
1280 * that is somewhat intentional because it avoids having to worry
1281 * about multiple states of premangling and postmangling as the values
1282 * are being passed around.
1283 *
1284 * Make sure this matches the installation rules in nls-global.mk.
1285 */
1286#ifdef SO_MAJOR_VERSION
1287#define PG_TEXTDOMAIN(domain) (domain CppAsString2(SO_MAJOR_VERSION) "-" PG_MAJORVERSION)
1288#else
1289#define PG_TEXTDOMAIN(domain) (domain "-" PG_MAJORVERSION)
1290#endif
1291
1292/*
1293 * Macro that allows to cast constness and volatile away from an expression, but doesn't
1294 * allow changing the underlying type. Enforcement of the latter
1295 * currently only works for gcc like compilers.
1296 *
1297 * Please note IT IS NOT SAFE to cast constness away if the result will ever
1298 * be modified (it would be undefined behaviour). Doing so anyway can cause
1299 * compiler misoptimizations or runtime crashes (modifying readonly memory).
1300 * It is only safe to use when the result will not be modified, but API
1301 * design or language restrictions prevent you from declaring that
1302 * (e.g. because a function returns both const and non-const variables).
1303 *
1304 * Note that this only works in function scope, not for global variables (it'd
1305 * be nice, but not trivial, to improve that).
1306 */
1307#if defined(__cplusplus)
1308#define unconstify(underlying_type, expr) const_cast<underlying_type>(expr)
1309#define unvolatize(underlying_type, expr) const_cast<underlying_type>(expr)
1310#else
1311#define unconstify(underlying_type, expr) \
1312 (StaticAssertVariableIsOfTypeMacro(expr, const underlying_type), \
1313 (underlying_type) (expr))
1314#define unvolatize(underlying_type, expr) \
1315 (StaticAssertVariableIsOfTypeMacro(expr, volatile underlying_type), \
1316 (underlying_type) (expr))
1317#endif
1318
1319/*
1320 * SSE2 instructions are part of the spec for the 64-bit x86 ISA. We assume
1321 * that compilers targeting this architecture understand SSE2 intrinsics.
1322 */
1323#if (defined(__x86_64__) || defined(_M_AMD64))
1324#define USE_SSE2
1325
1326/*
1327 * We use the Neon instructions if the compiler provides access to them (as
1328 * indicated by __ARM_NEON) and we are on aarch64. While Neon support is
1329 * technically optional for aarch64, it appears that all available 64-bit
1330 * hardware does have it. Neon exists in some 32-bit hardware too, but we
1331 * could not realistically use it there without a run-time check, which seems
1332 * not worth the trouble for now.
1333 */
1334#elif defined(__aarch64__) && defined(__ARM_NEON)
1335#define USE_NEON
1336#endif
1337
1338/* ----------------------------------------------------------------
1339 * Section 9: system-specific hacks
1340 *
1341 * This should be limited to things that absolutely have to be
1342 * included in every source file. The port-specific header file
1343 * is usually a better place for this sort of thing.
1344 * ----------------------------------------------------------------
1345 */
1346
1347/*
1348 * NOTE: this is also used for opening text files.
1349 * WIN32 treats Control-Z as EOF in files opened in text mode.
1350 * Therefore, we open files in binary mode on Win32 so we can read
1351 * literal control-Z. The other affect is that we see CRLF, but
1352 * that is OK because we can already handle those cleanly.
1353 */
1354#if defined(WIN32) || defined(__CYGWIN__)
1355#define PG_BINARY O_BINARY
1356#define PG_BINARY_A "ab"
1357#define PG_BINARY_R "rb"
1358#define PG_BINARY_W "wb"
1359#else
1360#define PG_BINARY 0
1361#define PG_BINARY_A "a"
1362#define PG_BINARY_R "r"
1363#define PG_BINARY_W "w"
1364#endif
1365
1366/*
1367 * Provide prototypes for routines not present in a particular machine's
1368 * standard C library.
1369 */
1370
1371#if !HAVE_DECL_FDATASYNC
1372extern int fdatasync(int fd);
1373#endif
1374
1375/*
1376 * Thin wrappers that convert strings to exactly 64-bit integers, matching our
1377 * definition of int64. (For the naming, compare that POSIX has
1378 * strtoimax()/strtoumax() which return intmax_t/uintmax_t.)
1379 */
1380#if SIZEOF_LONG == 8
1381#define strtoi64(str, endptr, base) ((int64) strtol(str, endptr, base))
1382#define strtou64(str, endptr, base) ((uint64) strtoul(str, endptr, base))
1383#elif SIZEOF_LONG_LONG == 8
1384#define strtoi64(str, endptr, base) ((int64) strtoll(str, endptr, base))
1385#define strtou64(str, endptr, base) ((uint64) strtoull(str, endptr, base))
1386#else
1387#error "cannot find integer type of the same size as int64_t"
1388#endif
1389
1390/*
1391 * Similarly, wrappers around labs()/llabs() matching our int64.
1392 */
1393#if SIZEOF_LONG == 8
1394#define i64abs(i) ((int64) labs(i))
1395#elif SIZEOF_LONG_LONG == 8
1396#define i64abs(i) ((int64) llabs(i))
1397#else
1398#error "cannot find integer type of the same size as int64_t"
1399#endif
1400
1401/*
1402 * Use "extern PGDLLIMPORT ..." to declare variables that are defined
1403 * in the core backend and need to be accessible by loadable modules.
1404 * No special marking is required on most ports.
1405 */
1406#ifndef PGDLLIMPORT
1407#define PGDLLIMPORT
1408#endif
1409
1410/*
1411 * Use "extern PGDLLEXPORT ..." to declare functions that are defined in
1412 * loadable modules and need to be callable by the core backend or other
1413 * loadable modules.
1414 * If the compiler knows __attribute__((visibility("*"))), we use that,
1415 * unless we already have a platform-specific definition. Otherwise,
1416 * no special marking is required.
1417 */
1418#ifndef PGDLLEXPORT
1419#ifdef HAVE_VISIBILITY_ATTRIBUTE
1420#define PGDLLEXPORT __attribute__((visibility("default")))
1421#else
1422#define PGDLLEXPORT
1423#endif
1424#endif
1425
1426/*
1427 * The following is used as the arg list for signal handlers. Any ports
1428 * that take something other than an int argument should override this in
1429 * their pg_config_os.h file. Note that variable names are required
1430 * because it is used in both the prototypes as well as the definitions.
1431 * Note also the long name. We expect that this won't collide with
1432 * other names causing compiler warnings.
1433 */
1434
1435#ifndef SIGNAL_ARGS
1436#define SIGNAL_ARGS int postgres_signal_arg
1437#endif
1438
1439/*
1440 * When there is no sigsetjmp, its functionality is provided by plain
1441 * setjmp. We now support the case only on Windows. However, it seems
1442 * that MinGW-64 has some longstanding issues in its setjmp support,
1443 * so on that toolchain we cheat and use gcc's builtins.
1444 */
1445#ifdef WIN32
1446#ifdef __MINGW64__
1447typedef intptr_t sigjmp_buf[5];
1448#define sigsetjmp(x,y) __builtin_setjmp(x)
1449#define siglongjmp __builtin_longjmp
1450#else /* !__MINGW64__ */
1451#define sigjmp_buf jmp_buf
1452#define sigsetjmp(x,y) setjmp(x)
1453#define siglongjmp longjmp
1454#endif /* __MINGW64__ */
1455#endif /* WIN32 */
1456
1457/* /port compatibility functions */
1458#include "port.h"
1459
1460/*
1461 * char16_t and char32_t
1462 * Unicode code points.
1463 *
1464 * uchar.h should always be available in C11, but it's not available on
1465 * Mac. However, these types are keywords in C++11, so when using C++, we
1466 * can't redefine the types.
1467 *
1468 * XXX: when uchar.h is available everywhere, we can remove this check and
1469 * just include uchar.h unconditionally.
1470 *
1471 * XXX: this section is out of place because uchar.h needs to be included
1472 * after port.h, due to an interaction with win32_port.h in some cases.
1473 */
1474#ifdef HAVE_UCHAR_H
1475#include <uchar.h>
1476#else
1477#ifndef __cplusplus
1478typedef uint16_t char16_t;
1479typedef uint32_t char32_t;
1480#endif
1481#endif
1482
1483/* IWYU pragma: end_exports */
1484
1485#endif /* C_H */
fdatasync
int fdatasync(int fd)
Definition win32fdatasync.c:23
char16_t
uint16_t char16_t
Definition c.h:1476
char32_t
uint32_t char32_t
Definition c.h:1477
PG_IO_ALIGN_SIZE
#define PG_IO_ALIGN_SIZE
Definition pg_config_manual.h:223
fd
static int fd(const char *x, int i)
Definition preproc-init.c:105
fb
static int fb(int x)
Definition preproc-init.c:92
PGAlignedBlock::data
char data[BLCKSZ]
Definition c.h:1188
PGAlignedXLogBlock::data
char data[XLOG_BLCKSZ]
Definition c.h:1215
PGIOAlignedBlock::data
char data[BLCKSZ]
Definition c.h:1209

◆ BoolIsValid

#define BoolIsValid (   boolean)    ((boolean) == false || (boolean) == true)

Definition at line 830 of file c.h.

◆ BUFFERALIGN

#define BUFFERALIGN (   LEN)    TYPEALIGN(ALIGNOF_BUFFER, (LEN))

Definition at line 882 of file c.h.

◆ BUFFERALIGN_DOWN

#define BUFFERALIGN_DOWN (   LEN)    TYPEALIGN_DOWN(ALIGNOF_BUFFER, (LEN))

Definition at line 893 of file c.h.

◆ CACHELINEALIGN

#define CACHELINEALIGN (   LEN)    TYPEALIGN(PG_CACHE_LINE_SIZE, (LEN))

Definition at line 883 of file c.h.

◆ CppAsString

#define CppAsString (   identifier)    #identifier

Definition at line 481 of file c.h.

◆ CppAsString2

#define CppAsString2 (   x)    CppAsString(x)

Definition at line 482 of file c.h.

◆ CppConcat

#define CppConcat (   x,
  y 
)    x##y

Definition at line 483 of file c.h.

◆ dgettext

#define dgettext (   d,
  x 
)    (x)

Definition at line 1253 of file c.h.

◆ dngettext

#define dngettext (   d,
  s,
  p,
  n 
)    ((n) == 1 ? (s) : (p))

Definition at line 1255 of file c.h.

◆ DOUBLEALIGN

#define DOUBLEALIGN (   LEN)    TYPEALIGN(ALIGNOF_DOUBLE, (LEN))

Definition at line 879 of file c.h.

◆ DOUBLEALIGN_DOWN

#define DOUBLEALIGN_DOWN (   LEN)    TYPEALIGN_DOWN(ALIGNOF_DOUBLE, (LEN))

Definition at line 891 of file c.h.

◆ ESCAPE_STRING_SYNTAX

#define ESCAPE_STRING_SYNTAX   'E'

Definition at line 1239 of file c.h.

◆ FirstCommandId

#define FirstCommandId   ((CommandId) 0)

Definition at line 736 of file c.h.

◆ FLEXIBLE_ARRAY_MEMBER

#define FLEXIBLE_ARRAY_MEMBER   /* empty */

Definition at line 534 of file c.h.

◆ FLOAT4_FITS_IN_INT16

#define FLOAT4_FITS_IN_INT16 (   num)     ((num) >= (float4) PG_INT16_MIN && (num) < -((float4) PG_INT16_MIN))

Definition at line 1153 of file c.h.

◆ FLOAT4_FITS_IN_INT32

#define FLOAT4_FITS_IN_INT32 (   num)     ((num) >= (float4) PG_INT32_MIN && (num) < -((float4) PG_INT32_MIN))

Definition at line 1155 of file c.h.

◆ FLOAT4_FITS_IN_INT64

#define FLOAT4_FITS_IN_INT64 (   num)     ((num) >= (float4) PG_INT64_MIN && (num) < -((float4) PG_INT64_MIN))

Definition at line 1157 of file c.h.

◆ FLOAT8_FITS_IN_INT16

#define FLOAT8_FITS_IN_INT16 (   num)     ((num) >= (float8) PG_INT16_MIN && (num) < -((float8) PG_INT16_MIN))

Definition at line 1159 of file c.h.

◆ FLOAT8_FITS_IN_INT32

#define FLOAT8_FITS_IN_INT32 (   num)     ((num) >= (float8) PG_INT32_MIN && (num) < -((float8) PG_INT32_MIN))

Definition at line 1161 of file c.h.

◆ FLOAT8_FITS_IN_INT64

#define FLOAT8_FITS_IN_INT64 (   num)     ((num) >= (float8) PG_INT64_MIN && (num) < -((float8) PG_INT64_MIN))

Definition at line 1163 of file c.h.

◆ FLOAT8PASSBYVAL

#define FLOAT8PASSBYVAL   true

Definition at line 704 of file c.h.

◆ gettext

#define gettext (   x)    (x)

Definition at line 1252 of file c.h.

◆ gettext_noop

#define gettext_noop (   x)    (x)

Definition at line 1269 of file c.h.

◆ HAVE_INT64_TIMESTAMP

#define HAVE_INT64_TIMESTAMP

Definition at line 667 of file c.h.

◆ HIGHBIT

#define HIGHBIT   (0x80)

Definition at line 1227 of file c.h.

◆ INT64_FORMAT

#define INT64_FORMAT   "%" PRId64

Definition at line 618 of file c.h.

◆ INT64ALIGN

#define INT64ALIGN (   LEN)    TYPEALIGN(ALIGNOF_INT64_T, (LEN))

Definition at line 878 of file c.h.

◆ INT64ALIGN_DOWN

#define INT64ALIGN_DOWN (   LEN)    TYPEALIGN_DOWN(ALIGNOF_INT64_T, (LEN))

Definition at line 890 of file c.h.

◆ INT64CONST

#define INT64CONST (   x)    INT64_C(x)

Definition at line 614 of file c.h.

◆ INTALIGN

#define INTALIGN (   LEN)    TYPEALIGN(ALIGNOF_INT, (LEN))

Definition at line 877 of file c.h.

◆ INTALIGN_DOWN

#define INTALIGN_DOWN (   LEN)    TYPEALIGN_DOWN(ALIGNOF_INT, (LEN))

Definition at line 889 of file c.h.

◆ InvalidCommandId

#define InvalidCommandId   (~(CommandId)0)

Definition at line 737 of file c.h.

◆ InvalidOid8

#define InvalidOid8   ((Oid8) 0)

Definition at line 742 of file c.h.

◆ InvalidSubTransactionId

#define InvalidSubTransactionId   ((SubTransactionId) 0)

Definition at line 726 of file c.h.

◆ INVERT_COMPARE_RESULT

#define INVERT_COMPARE_RESULT (   var)     ((var) = ((var) < 0) ? 1 : -(var))

Definition at line 1177 of file c.h.

◆ IS_HIGHBIT_SET

#define IS_HIGHBIT_SET (   ch)    ((unsigned char)(ch) & HIGHBIT)

Definition at line 1228 of file c.h.

◆ lengthof

#define lengthof (   array)    (sizeof (array) / sizeof ((array)[0]))

Definition at line 857 of file c.h.

◆ likely

#define likely (   x)    ((x) != 0)

Definition at line 431 of file c.h.

◆ Max

#define Max (   x,
  y 
)    ((x) > (y) ? (x) : (y))

Definition at line 1069 of file c.h.

◆ MAXALIGN

#define MAXALIGN (   LEN)    TYPEALIGN(MAXIMUM_ALIGNOF, (LEN))

Definition at line 880 of file c.h.

◆ MAXALIGN64

#define MAXALIGN64 (   LEN)    TYPEALIGN64(MAXIMUM_ALIGNOF, (LEN))

Definition at line 905 of file c.h.

◆ MAXALIGN_DOWN

#define MAXALIGN_DOWN (   LEN)    TYPEALIGN_DOWN(MAXIMUM_ALIGNOF, (LEN))

Definition at line 892 of file c.h.

◆ MemSet

#define MemSet (   start,
  val,
  len 
)
Value:
do \
{ \
/* must be void* because we don't know if it is size_t aligned yet */ \
void *_vstart = (void *) (start); \
int _val = (val); \
Size _len = (len); \
\
if ((((uintptr_t) _vstart) & SIZE_T_ALIGN_MASK) == 0 && \
(_len & SIZE_T_ALIGN_MASK) == 0 && \
_val == 0 && \
_len <= MEMSET_LOOP_LIMIT && \
/* \
* If MEMSET_LOOP_LIMIT == 0, optimizer should find \
* the whole "if" false at compile time. \
*/ \
MEMSET_LOOP_LIMIT != 0) \
{ \
size_t *_start = (size_t *) _vstart; \
size_t *_stop = (size_t *) ((char *) _start + _len); \
while (_start < _stop) \
*_start++ = 0; \
} \
else \
memset(_vstart, _val, _len); \
} while (0)
SIZE_T_ALIGN_MASK
#define SIZE_T_ALIGN_MASK
Definition c.h:1079
Size
size_t Size
Definition c.h:673
start
return str start
Definition hashfn_unstable.h:289
val
long val
Definition informix.c:689
len
const void size_t len
Definition pg_crc32c_sse42.c:31

Definition at line 1091 of file c.h.

1093 { \
1094 /* must be void* because we don't know if it is size_t aligned yet */ \
1095 void *_vstart = (void *) (start); \
1096 int _val = (val); \
1097 Size _len = (len); \
1098\
1099 if ((((uintptr_t) _vstart) & SIZE_T_ALIGN_MASK) == 0 && \
1100 (_len & SIZE_T_ALIGN_MASK) == 0 && \
1101 _val == 0 && \
1102 _len <= MEMSET_LOOP_LIMIT && \
1103 /* \
1104 * If MEMSET_LOOP_LIMIT == 0, optimizer should find \
1105 * the whole "if" false at compile time. \
1106 */ \
1107 MEMSET_LOOP_LIMIT != 0) \
1108 { \
1109 size_t *_start = (size_t *) _vstart; \
1110 size_t *_stop = (size_t *) ((char *) _start + _len); \
1111 while (_start < _stop) \
1112 *_start++ = 0; \
1113 } \

◆ MemSetAligned

#define MemSetAligned (   start,
  val,
  len 
)
Value:
do \
{ \
size_t *_start = (size_t *) (start); \
int _val = (val); \
Size _len = (len); \
\
if ((_len & SIZE_T_ALIGN_MASK) == 0 && \
_val == 0 && \
_len <= MEMSET_LOOP_LIMIT && \
MEMSET_LOOP_LIMIT != 0) \
{ \
size_t *_stop = (size_t *) ((char *) _start + _len); \
while (_start < _stop) \
*_start++ = 0; \
} \
else \
memset(_start, _val, _len); \
} while (0)

Definition at line 1121 of file c.h.

1126 { \
1127 size_t *_start = (size_t *) (start); \
1128 int _val = (val); \
1129 Size _len = (len); \
1130\
1131 if ((_len & SIZE_T_ALIGN_MASK) == 0 && \
1132 _val == 0 && \
1133 _len <= MEMSET_LOOP_LIMIT && \
1134 MEMSET_LOOP_LIMIT != 0) \
1135 { \
1136 size_t *_stop = (size_t *) ((char *) _start + _len); \
1137 while (_start < _stop) \
1138 *_start++ = 0; \
1139 } \

◆ Min

#define Min (   x,
  y 
)    ((x) < (y) ? (x) : (y))

Definition at line 1075 of file c.h.

◆ NameStr

#define NameStr (   name)    ((name).data)

Definition at line 819 of file c.h.

◆ ngettext

#define ngettext (   s,
  p,
  n 
)    ((n) == 1 ? (s) : (p))

Definition at line 1254 of file c.h.

◆ OffsetToPointer

#define OffsetToPointer (   base,
  offset 
)     ((void *)((char *) base + offset))

Definition at line 839 of file c.h.

◆ OID8_FORMAT

#define OID8_FORMAT   "%" PRIu64

Definition at line 620 of file c.h.

◆ OID8_MAX

#define OID8_MAX   UINT64_MAX

Definition at line 743 of file c.h.

◆ Oid8IsValid

#define Oid8IsValid (   objectId)    ((bool) ((objectId) != InvalidOid8))

Definition at line 844 of file c.h.

◆ OidIsValid

#define OidIsValid (   objectId)    ((bool) ((objectId) != InvalidOid))

Definition at line 842 of file c.h.

◆ pg_assume

#define pg_assume (   expr)    ((void) 0)

Definition at line 417 of file c.h.

◆ pg_attribute_always_inline

#define pg_attribute_always_inline   inline

Definition at line 299 of file c.h.

◆ pg_attribute_cold

#define pg_attribute_cold

Definition at line 340 of file c.h.

◆ pg_attribute_format_arg

#define pg_attribute_format_arg (   a)

Definition at line 261 of file c.h.

◆ pg_attribute_hot

#define pg_attribute_hot

Definition at line 346 of file c.h.

◆ pg_attribute_no_sanitize_address

#define pg_attribute_no_sanitize_address ( )

Definition at line 197 of file c.h.

◆ pg_attribute_no_sanitize_alignment

#define pg_attribute_no_sanitize_alignment ( )

Definition at line 209 of file c.h.

◆ pg_attribute_nonnull

#define pg_attribute_nonnull (   ...)

Definition at line 220 of file c.h.

◆ pg_attribute_printf

#define pg_attribute_printf (   f,
  a 
)

Definition at line 262 of file c.h.

◆ pg_attribute_target

#define pg_attribute_target (   ...)

Definition at line 232 of file c.h.

◆ pg_attribute_unused

#define pg_attribute_unused ( )

Definition at line 140 of file c.h.

◆ PG_BINARY

#define PG_BINARY   0

Definition at line 1358 of file c.h.

◆ PG_BINARY_A

#define PG_BINARY_A   "a"

Definition at line 1359 of file c.h.

◆ PG_BINARY_R

#define PG_BINARY_R   "r"

Definition at line 1360 of file c.h.

◆ PG_BINARY_W

#define PG_BINARY_W   "w"

Definition at line 1361 of file c.h.

◆ pg_fallthrough

#define pg_fallthrough

Definition at line 152 of file c.h.

◆ PG_INT16_MAX

#define PG_INT16_MAX   INT16_MAX

Definition at line 654 of file c.h.

◆ PG_INT16_MIN

#define PG_INT16_MIN   INT16_MIN

Definition at line 653 of file c.h.

◆ PG_INT32_MAX

#define PG_INT32_MAX   INT32_MAX

Definition at line 657 of file c.h.

◆ PG_INT32_MIN

#define PG_INT32_MIN   INT32_MIN

Definition at line 656 of file c.h.

◆ PG_INT64_MAX

#define PG_INT64_MAX   INT64_MAX

Definition at line 660 of file c.h.

◆ PG_INT64_MIN

#define PG_INT64_MIN   INT64_MIN

Definition at line 659 of file c.h.

◆ PG_INT8_MAX

#define PG_INT8_MAX   INT8_MAX

Definition at line 651 of file c.h.

◆ PG_INT8_MIN

#define PG_INT8_MIN   INT8_MIN

Definition at line 650 of file c.h.

◆ pg_nodiscard

#define pg_nodiscard

Definition at line 164 of file c.h.

◆ pg_noinline

#define pg_noinline

Definition at line 315 of file c.h.

◆ pg_noreturn

#define pg_noreturn

Definition at line 184 of file c.h.

◆ PG_PRINTF_ATTRIBUTE

#define PG_PRINTF_ATTRIBUTE   PG_C_PRINTF_ATTRIBUTE

Definition at line 251 of file c.h.

◆ PG_TEXTDOMAIN

#define PG_TEXTDOMAIN (   domain)    (domain "-" PG_MAJORVERSION)

Definition at line 1287 of file c.h.

◆ PG_UINT16_MAX

#define PG_UINT16_MAX   UINT16_MAX

Definition at line 655 of file c.h.

◆ PG_UINT32_MAX

#define PG_UINT32_MAX   UINT32_MAX

Definition at line 658 of file c.h.

◆ PG_UINT64_MAX

#define PG_UINT64_MAX   UINT64_MAX

Definition at line 661 of file c.h.

◆ PG_UINT8_MAX

#define PG_UINT8_MAX   UINT8_MAX

Definition at line 652 of file c.h.

◆ pg_unreachable

#define pg_unreachable ( )    abort()

Definition at line 361 of file c.h.

◆ PG_USED_FOR_ASSERTS_ONLY

#define PG_USED_FOR_ASSERTS_ONLY   pg_attribute_unused()

Definition at line 243 of file c.h.

◆ PGDLLEXPORT

#define PGDLLEXPORT

Definition at line 1420 of file c.h.

◆ PGDLLIMPORT

#define PGDLLIMPORT

Definition at line 1405 of file c.h.

◆ PointerIsAligned

#define PointerIsAligned (   pointer,
  type 
)     (((uintptr_t)(pointer) % (sizeof (type))) == 0)

Definition at line 836 of file c.h.

◆ RegProcedureIsValid

#define RegProcedureIsValid (   p)    OidIsValid(p)

Definition at line 846 of file c.h.

◆ SHORTALIGN

#define SHORTALIGN (   LEN)    TYPEALIGN(ALIGNOF_SHORT, (LEN))

Definition at line 876 of file c.h.

◆ SHORTALIGN_DOWN

#define SHORTALIGN_DOWN (   LEN)    TYPEALIGN_DOWN(ALIGNOF_SHORT, (LEN))

Definition at line 888 of file c.h.

◆ SIGNAL_ARGS

#define SIGNAL_ARGS   int postgres_signal_arg

Definition at line 1434 of file c.h.

◆ SIZE_T_ALIGN_MASK

#define SIZE_T_ALIGN_MASK   (sizeof(size_t) - 1)

Definition at line 1079 of file c.h.

◆ SQL_STR_DOUBLE

#define SQL_STR_DOUBLE (   ch,
  escape_backslash 
)     ((ch) == '\'' || ((ch) == '\\' && (escape_backslash)))

Definition at line 1236 of file c.h.

◆ StaticAssertDecl

#define StaticAssertDecl (   condition,
  errmessage 
)     static_assert(condition, errmessage)

Definition at line 992 of file c.h.

◆ StaticAssertExpr

#define StaticAssertExpr (   condition,
  errmessage 
)     ((void) sizeof(struct {static_assert(condition, errmessage); char a;}))

Definition at line 1017 of file c.h.

1018 {static_assert(condition, errmessage); char a;}))
a
int a
Definition isn.c:73

◆ StaticAssertStmt

#define StaticAssertStmt (   condition,
  errmessage 
)     do { static_assert(condition, errmessage); } while(0)

Definition at line 999 of file c.h.

1000 { static_assert(condition, errmessage); } while(0)

◆ StaticAssertVariableIsOfType

#define StaticAssertVariableIsOfType (   varname,
  typename 
)
Value:
StaticAssertDecl(sizeof(varname) == sizeof(typename), \
CppAsString(varname) " does not have type " CppAsString(typename))
CppAsString
#define CppAsString(identifier)
Definition c.h:481
StaticAssertDecl
#define StaticAssertDecl(condition, errmessage)
Definition c.h:992

Definition at line 1052 of file c.h.

◆ StaticAssertVariableIsOfTypeMacro

#define StaticAssertVariableIsOfTypeMacro (   varname,
  typename 
)
Value:
(StaticAssertExpr(sizeof(varname) == sizeof(typename), \
CppAsString(varname) " does not have type " CppAsString(typename)))
StaticAssertExpr
#define StaticAssertExpr(condition, errmessage)
Definition c.h:1017

Definition at line 1055 of file c.h.

◆ STATUS_EOF

#define STATUS_EOF   (-2)

Definition at line 1244 of file c.h.

◆ STATUS_ERROR

#define STATUS_ERROR   (-1)

Definition at line 1243 of file c.h.

◆ STATUS_OK

#define STATUS_OK   (0)

Definition at line 1242 of file c.h.

◆ TopSubTransactionId

#define TopSubTransactionId   ((SubTransactionId) 1)

Definition at line 727 of file c.h.

◆ TYPEALIGN

#define TYPEALIGN (   ALIGNVAL,
  LEN 
)     (((uintptr_t) (LEN) + ((ALIGNVAL) - 1)) & ~((uintptr_t) ((ALIGNVAL) - 1)))

Definition at line 873 of file c.h.

◆ TYPEALIGN64

#define TYPEALIGN64 (   ALIGNVAL,
  LEN 
)     (((uint64) (LEN) + ((ALIGNVAL) - 1)) & ~((uint64) ((ALIGNVAL) - 1)))

Definition at line 901 of file c.h.

◆ TYPEALIGN_DOWN

#define TYPEALIGN_DOWN (   ALIGNVAL,
  LEN 
)     (((uintptr_t) (LEN)) & ~((uintptr_t) ((ALIGNVAL) - 1)))

Definition at line 885 of file c.h.

◆ UINT64_FORMAT

#define UINT64_FORMAT   "%" PRIu64

Definition at line 619 of file c.h.

◆ UINT64CONST

#define UINT64CONST (   x)    UINT64_C(x)

Definition at line 615 of file c.h.

◆ unconstify

#define unconstify (   underlying_type,
  expr 
)
Value:
(StaticAssertVariableIsOfTypeMacro(expr, const underlying_type), \
(underlying_type) (expr))
StaticAssertVariableIsOfTypeMacro
#define StaticAssertVariableIsOfTypeMacro(varname, typename)
Definition c.h:1055

Definition at line 1309 of file c.h.

◆ unlikely

#define unlikely (   x)    ((x) != 0)

Definition at line 432 of file c.h.

◆ unvolatize

#define unvolatize (   underlying_type,
  expr 
)
Value:
(StaticAssertVariableIsOfTypeMacro(expr, volatile underlying_type), \
(underlying_type) (expr))

Definition at line 1312 of file c.h.

◆ VA_ARGS_NARGS

#define VA_ARGS_NARGS (   ...)
Value:
VA_ARGS_NARGS_(__VA_ARGS__, \
63,62,61,60, \
59,58,57,56,55,54,53,52,51,50, \
49,48,47,46,45,44,43,42,41,40, \
39,38,37,36,35,34,33,32,31,30, \
29,28,27,26,25,24,23,22,21,20, \
19,18,17,16,15,14,13,12,11,10, \
9, 8, 7, 6, 5, 4, 3, 2, 1, 0)
VA_ARGS_NARGS_
#define VA_ARGS_NARGS_(_01, _02, _03, _04, _05, _06, _07, _08, _09, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, _30, _31, _32, _33, _34, _35, _36, _37, _38, _39, _40, _41, _42, _43, _44, _45, _46, _47, _48, _49, _50, _51, _52, _53, _54, _55, _56, _57, _58, _59, _60, _61, _62, _63, N,...)
Definition c.h:509

Definition at line 499 of file c.h.

◆ VA_ARGS_NARGS_

#define VA_ARGS_NARGS_ (   _01,
  _02,
  _03,
  _04,
  _05,
  _06,
  _07,
  _08,
  _09,
  _10,
  _11,
  _12,
  _13,
  _14,
  _15,
  _16,
  _17,
  _18,
  _19,
  _20,
  _21,
  _22,
  _23,
  _24,
  _25,
  _26,
  _27,
  _28,
  _29,
  _30,
  _31,
  _32,
  _33,
  _34,
  _35,
  _36,
  _37,
  _38,
  _39,
  _40,
  _41,
  _42,
  _43,
  _44,
  _45,
  _46,
  _47,
  _48,
  _49,
  _50,
  _51,
  _52,
  _53,
  _54,
  _55,
  _56,
  _57,
  _58,
  _59,
  _60,
  _61,
  _62,
  _63,
  N,
  ... 
)     (N)

Definition at line 509 of file c.h.

◆ VARHDRSZ

#define VARHDRSZ   ((int32) sizeof(int32))

Definition at line 765 of file c.h.

Typedef Documentation

◆ bits16

typedef uint16 bits16

Definition at line 608 of file c.h.

◆ bits32

typedef uint32 bits32

Definition at line 609 of file c.h.

◆ bits8

typedef uint8 bits8

Definition at line 607 of file c.h.

◆ BpChar

typedef varlena BpChar

Definition at line 774 of file c.h.

◆ bytea

typedef varlena bytea

Definition at line 772 of file c.h.

◆ char16_t

typedef uint16_t char16_t

Definition at line 1476 of file c.h.

◆ char32_t

typedef uint32_t char32_t

Definition at line 1477 of file c.h.

◆ CommandId

typedef uint32 CommandId

Definition at line 734 of file c.h.

◆ float4

typedef float float4

Definition at line 697 of file c.h.

◆ float8

typedef double float8

Definition at line 698 of file c.h.

◆ Index

typedef unsigned int Index

Definition at line 682 of file c.h.

◆ int16

typedef int16_t int16

Definition at line 595 of file c.h.

◆ int32

typedef int32_t int32

Definition at line 596 of file c.h.

◆ int64

typedef int64_t int64

Definition at line 597 of file c.h.

◆ int8

typedef int8_t int8

Definition at line 594 of file c.h.

◆ LocalTransactionId

typedef uint32 LocalTransactionId

Definition at line 722 of file c.h.

◆ MultiXactId

typedef TransactionId MultiXactId

Definition at line 730 of file c.h.

◆ MultiXactOffset

typedef uint64 MultiXactOffset

Definition at line 732 of file c.h.

◆ Name

typedef NameData* Name

Definition at line 817 of file c.h.

◆ NameData

typedef struct nameData NameData

◆ Offset

typedef signed int Offset

Definition at line 692 of file c.h.

◆ Oid8

typedef uint64 Oid8

Definition at line 740 of file c.h.

◆ pg_funcptr_t

typedef void(* pg_funcptr_t) (void)

Definition at line 524 of file c.h.

◆ PGAlignedBlock

typedef struct PGAlignedBlock PGAlignedBlock

◆ PGAlignedXLogBlock

typedef struct PGAlignedXLogBlock PGAlignedXLogBlock

◆ PGIOAlignedBlock

typedef struct PGIOAlignedBlock PGIOAlignedBlock

◆ Pointer

typedef void* Pointer

Definition at line 591 of file c.h.

◆ regproc

typedef Oid regproc

Definition at line 717 of file c.h.

◆ RegProcedure

typedef regproc RegProcedure

Definition at line 718 of file c.h.

◆ Size

typedef size_t Size

Definition at line 673 of file c.h.

◆ SubTransactionId

typedef uint32 SubTransactionId

Definition at line 724 of file c.h.

◆ text

typedef varlena text

Definition at line 773 of file c.h.

◆ TransactionId

typedef uint32 TransactionId

Definition at line 720 of file c.h.

◆ uint16

typedef uint16_t uint16

Definition at line 599 of file c.h.

◆ uint32

typedef uint32_t uint32

Definition at line 600 of file c.h.

◆ uint64

typedef uint64_t uint64

Definition at line 601 of file c.h.

◆ uint8

typedef uint8_t uint8

Definition at line 598 of file c.h.

◆ VarChar

typedef varlena VarChar

Definition at line 775 of file c.h.

◆ varlena

typedef struct varlena varlena

Function Documentation

◆ ExceptionalCondition()

pg_noreturn void ExceptionalCondition ( const char *  conditionName,
const char *  fileName,
int  lineNumber 
)
extern

Definition at line 30 of file assert.c.

33{
34 /* Report the failure on stderr (or local equivalent) */
35 if (!conditionName || !fileName)
36 write_stderr("TRAP: ExceptionalCondition: bad arguments in PID %d\n",
37 (int) getpid());
38 else
39 write_stderr("TRAP: failed Assert(\"%s\"), File: \"%s\", Line: %d, PID: %d\n",
40 conditionName, fileName, lineNumber, (int) getpid());
41
42 /* Usually this shouldn't be needed, but make sure the msg went out */
43 fflush(stderr);
44
45 /* If we have support for it, dump a simple backtrace */
46#ifdef HAVE_BACKTRACE_SYMBOLS
47 {
48 void *buf[100];
49 int nframes;
50
51 nframes = backtrace(buf, lengthof(buf));
52 backtrace_symbols_fd(buf, nframes, fileno(stderr));
53 }
54#endif
55
56 /*
57 * If configured to do so, sleep indefinitely to allow user to attach a
58 * debugger. It would be nice to use pg_usleep() here, but that can sleep
59 * at most 2G usec or ~33 minutes, which seems too short.
60 */
61#ifdef SLEEP_ON_ASSERT
62 sleep(1000000);
63#endif
64
65 abort();
66}
write_stderr
#define write_stderr(str)
Definition parallel.c:186
lengthof
#define lengthof(array)
Definition c.h:857
buf
static char buf[DEFAULT_XLOG_SEG_SIZE]
Definition pg_test_fsync.c:71

References buf, fb(), lengthof, and write_stderr.

Referenced by pg_re_throw().

◆ fdatasync()

int fdatasync ( int  fd)
extern

Definition at line 23 of file win32fdatasync.c.

24{
25 IO_STATUS_BLOCK iosb;
26 NTSTATUS status;
27 HANDLE handle;
28
29 handle = (HANDLE) _get_osfhandle(fd);
30 if (handle == INVALID_HANDLE_VALUE)
31 {
32 errno = EBADF;
33 return -1;
34 }
35
36 if (initialize_ntdll() < 0)
37 return -1;
38
39 memset(&iosb, 0, sizeof(iosb));
40 status = pg_NtFlushBuffersFileEx(handle,
41 FLUSH_FLAGS_FILE_DATA_SYNC_ONLY,
42 NULL,
43 0,
44 &iosb);
45
46 if (NT_SUCCESS(status))
47 return 0;
48
49 _dosmaperr(pg_RtlNtStatusToDosError(status));
50 return -1;
51}
_dosmaperr
void _dosmaperr(unsigned long)
Definition win32error.c:177
pg_NtFlushBuffersFileEx
PGDLLIMPORT NtFlushBuffersFileEx_t pg_NtFlushBuffersFileEx
Definition win32ntdll.c:22
initialize_ntdll
int initialize_ntdll(void)
Definition win32ntdll.c:39
FLUSH_FLAGS_FILE_DATA_SYNC_ONLY
#define FLUSH_FLAGS_FILE_DATA_SYNC_ONLY
Definition win32ntdll.h:21
pg_RtlNtStatusToDosError
PGDLLIMPORT RtlNtStatusToDosError_t pg_RtlNtStatusToDosError
Definition win32ntdll.c:21

References _dosmaperr(), fb(), fd(), FLUSH_FLAGS_FILE_DATA_SYNC_ONLY, initialize_ntdll(), pg_NtFlushBuffersFileEx, and pg_RtlNtStatusToDosError.

Referenced by pg_fdatasync(), and test_sync().