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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 1276 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 945 of file c.h.

◆ AssertMacro

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

Definition at line 946 of file c.h.

◆ AssertPointerAlignment

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

Definition at line 980 of file c.h.

1017 { static_assert(condition, errmessage); } while(0)
1018
1019/*
1020 * StaticAssertExpr() is for use in an expression.
1021 *
1022 * See <https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3715.pdf> for some
1023 * rationale for the precise behavior of this implementation. See
1024 * <https://stackoverflow.com/questions/31311748> about the C++
1025 * implementation.
1026 *
1027 * For compilers that don't support this, we fall back on a kluge that assumes
1028 * the compiler will complain about a negative width for a struct bit-field.
1029 * This will not include a helpful error message, but it beats not getting an
1030 * error at all.
1031 */
1032#ifndef __cplusplus
1033#if !defined(_MSC_VER) || _MSC_VER >= 1933
1034#define StaticAssertExpr(condition, errmessage) \
1035 ((void) sizeof(struct {static_assert(condition, errmessage); char a;}))
1036#else /* _MSC_VER < 1933 */
1037/*
1038 * This compiler is buggy and fails to compile the previous variant; use a
1039 * fallback implementation.
1040 */
1041#define StaticAssertExpr(condition, errmessage) \
1042 ((void) sizeof(struct { int static_assert_failure : (condition) ? 1 : -1; }))
1043#endif /* _MSC_VER < 1933 */
1044#else /* __cplusplus */
1045#define StaticAssertExpr(condition, errmessage) \
1046 ([]{static_assert(condition, errmessage);})
1047#endif
1048
1049
1050/*
1051 * Compile-time checks that a variable (or expression) has the specified type.
1052 *
1053 * StaticAssertVariableIsOfType() can be used as a declaration.
1054 * StaticAssertVariableIsOfTypeMacro() is intended for use in macros, eg
1055 * #define foo(x) (StaticAssertVariableIsOfTypeMacro(x, int), bar(x))
1056 *
1057 * If we don't have __builtin_types_compatible_p, we can still assert that
1058 * the types have the same size. This is far from ideal (especially on 32-bit
1059 * platforms) but it provides at least some coverage.
1060 */
1061#ifdef HAVE__BUILTIN_TYPES_COMPATIBLE_P
1062#define StaticAssertVariableIsOfType(varname, typename) \
1063 StaticAssertDecl(__builtin_types_compatible_p(typeof(varname), typename), \
1064 CppAsString(varname) " does not have type " CppAsString(typename))
1065#define StaticAssertVariableIsOfTypeMacro(varname, typename) \
1066 (StaticAssertExpr(__builtin_types_compatible_p(typeof(varname), typename), \
1067 CppAsString(varname) " does not have type " CppAsString(typename)))
1068#else /* !HAVE__BUILTIN_TYPES_COMPATIBLE_P */
1069#define StaticAssertVariableIsOfType(varname, typename) \
1070 StaticAssertDecl(sizeof(varname) == sizeof(typename), \
1071 CppAsString(varname) " does not have type " CppAsString(typename))
1072#define StaticAssertVariableIsOfTypeMacro(varname, typename) \
1073 (StaticAssertExpr(sizeof(varname) == sizeof(typename), \
1074 CppAsString(varname) " does not have type " CppAsString(typename)))
1075#endif /* HAVE__BUILTIN_TYPES_COMPATIBLE_P */
1076
1077
1078/* ----------------------------------------------------------------
1079 * Section 7: widely useful macros
1080 * ----------------------------------------------------------------
1081 */
1082/*
1083 * Max
1084 * Return the maximum of two numbers.
1085 */
1086#define Max(x, y) ((x) > (y) ? (x) : (y))
1087
1088/*
1089 * Min
1090 * Return the minimum of two numbers.
1091 */
1092#define Min(x, y) ((x) < (y) ? (x) : (y))
1093
1094
1095/* Get a bit mask of the bits set in non-size_t aligned addresses */
1096#define SIZE_T_ALIGN_MASK (sizeof(size_t) - 1)
1097
1098/*
1099 * MemSet
1100 * Exactly the same as standard library function memset(), but considerably
1101 * faster for zeroing small size_t-aligned structures (such as parsetree
1102 * nodes). This has to be a macro because the main point is to avoid
1103 * function-call overhead. However, we have also found that the loop is
1104 * faster than native libc memset() on some platforms, even those with
1105 * assembler memset() functions. More research needs to be done, perhaps
1106 * with MEMSET_LOOP_LIMIT tests in configure.
1107 */
1108#define MemSet(start, val, len) \
1109 do \
1110 { \
1111 /* must be void* because we don't know if it is size_t aligned yet */ \
1112 void *_vstart = (void *) (start); \
1113 int _val = (val); \
1114 Size _len = (len); \
1115\
1116 if ((((uintptr_t) _vstart) & SIZE_T_ALIGN_MASK) == 0 && \
1117 (_len & SIZE_T_ALIGN_MASK) == 0 && \
1118 _val == 0 && \
1119 _len <= MEMSET_LOOP_LIMIT && \
1120 /* \
1121 * If MEMSET_LOOP_LIMIT == 0, optimizer should find \
1122 * the whole "if" false at compile time. \
1123 */ \
1124 MEMSET_LOOP_LIMIT != 0) \
1125 { \
1126 size_t *_start = (size_t *) _vstart; \
1127 size_t *_stop = (size_t *) ((char *) _start + _len); \
1128 while (_start < _stop) \
1129 *_start++ = 0; \
1130 } \
1131 else \
1132 memset(_vstart, _val, _len); \
1133 } while (0)
1134
1135/*
1136 * MemSetAligned is the same as MemSet except it omits the test to see if
1137 * "start" is size_t-aligned. This is okay to use if the caller knows
1138 * a-priori that the pointer is suitably aligned (typically, because he just
1139 * got it from palloc(), which always delivers a max-aligned pointer).
1140 */
1141#define MemSetAligned(start, val, len) \
1142 do \
1143 { \
1144 size_t *_start = (size_t *) (start); \
1145 int _val = (val); \
1146 Size _len = (len); \
1147\
1148 if ((_len & SIZE_T_ALIGN_MASK) == 0 && \
1149 _val == 0 && \
1150 _len <= MEMSET_LOOP_LIMIT && \
1151 MEMSET_LOOP_LIMIT != 0) \
1152 { \
1153 size_t *_stop = (size_t *) ((char *) _start + _len); \
1154 while (_start < _stop) \
1155 *_start++ = 0; \
1156 } \
1157 else \
1158 memset(_start, _val, _len); \
1159 } while (0)
1160
1161
1162/*
1163 * Macros for range-checking float values before converting to integer.
1164 * We must be careful here that the boundary values are expressed exactly
1165 * in the float domain. PG_INTnn_MIN is an exact power of 2, so it will
1166 * be represented exactly; but PG_INTnn_MAX isn't, and might get rounded
1167 * off, so avoid using that.
1168 * The input must be rounded to an integer beforehand, typically with rint(),
1169 * else we might draw the wrong conclusion about close-to-the-limit values.
1170 * These macros will do the right thing for Inf, but not necessarily for NaN,
1171 * so check isnan(num) first if that's a possibility.
1172 */
1173#define FLOAT4_FITS_IN_INT16(num) \
1174 ((num) >= (float4) PG_INT16_MIN && (num) < -((float4) PG_INT16_MIN))
1175#define FLOAT4_FITS_IN_INT32(num) \
1176 ((num) >= (float4) PG_INT32_MIN && (num) < -((float4) PG_INT32_MIN))
1177#define FLOAT4_FITS_IN_INT64(num) \
1178 ((num) >= (float4) PG_INT64_MIN && (num) < -((float4) PG_INT64_MIN))
1179#define FLOAT8_FITS_IN_INT16(num) \
1180 ((num) >= (float8) PG_INT16_MIN && (num) < -((float8) PG_INT16_MIN))
1181#define FLOAT8_FITS_IN_INT32(num) \
1182 ((num) >= (float8) PG_INT32_MIN && (num) < -((float8) PG_INT32_MIN))
1183#define FLOAT8_FITS_IN_INT64(num) \
1184 ((num) >= (float8) PG_INT64_MIN && (num) < -((float8) PG_INT64_MIN))
1185
1186
1187/* ----------------------------------------------------------------
1188 * Section 8: random stuff
1189 * ----------------------------------------------------------------
1190 */
1191
1192/*
1193 * Invert the sign of a qsort-style comparison result, ie, exchange negative
1194 * and positive integer values, being careful not to get the wrong answer
1195 * for INT_MIN. The argument should be an integral variable.
1196 */
1197#define INVERT_COMPARE_RESULT(var) \
1198 ((var) = ((var) < 0) ? 1 : -(var))
1199
1200/*
1201 * Use this, not "char buf[BLCKSZ]", to declare a field or local variable
1202 * holding a page buffer, if that page might be accessed as a page. Otherwise
1203 * the variable might be under-aligned, causing problems on alignment-picky
1204 * hardware.
1205 */
1206typedef struct PGAlignedBlock
1207{
1208 alignas(MAXIMUM_ALIGNOF) char data[BLCKSZ];
1209} PGAlignedBlock;
1210
1211/*
1212 * alignas with extended alignments is buggy in g++ < 9. As a simple
1213 * workaround, we disable these definitions in that case.
1214 *
1215 * <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89357>
1216 */
1217#if !(defined(__cplusplus) && defined(__GNUC__) && !defined(__clang__) && __GNUC__ < 9)
1218
1219/*
1220 * Use this to declare a field or local variable holding a page buffer, if that
1221 * page might be accessed as a page or passed to an SMgr I/O function. If
1222 * allocating using the MemoryContext API, the aligned allocation functions
1223 * should be used with PG_IO_ALIGN_SIZE. This alignment may be more efficient
1224 * for I/O in general, but may be strictly required on some platforms when
1225 * using direct I/O.
1226 */
1227typedef struct PGIOAlignedBlock
1228{
1229 alignas(PG_IO_ALIGN_SIZE) char data[BLCKSZ];
1230} PGIOAlignedBlock;
1231
1232/* Same, but for an XLOG_BLCKSZ-sized buffer */
1233typedef struct PGAlignedXLogBlock
1234{
1235 alignas(PG_IO_ALIGN_SIZE) char data[XLOG_BLCKSZ];
1236} PGAlignedXLogBlock;
1237
1238#else /* (g++ < 9) */
1239
1240/* Allow these types to be used as abstract types when using old g++ */
1241typedef struct PGIOAlignedBlock PGIOAlignedBlock;
1242typedef struct PGAlignedXLogBlock PGAlignedXLogBlock;
1243
1244#endif /* !(g++ < 9) */
1245
1246/* msb for char */
1247#define HIGHBIT (0x80)
1248#define IS_HIGHBIT_SET(ch) ((unsigned char)(ch) & HIGHBIT)
1249
1250/*
1251 * Support macros for escaping strings. escape_backslash should be true
1252 * if generating a non-standard-conforming string. Prefixing a string
1253 * with ESCAPE_STRING_SYNTAX guarantees it is non-standard-conforming.
1254 * Beware of multiple evaluation of the "ch" argument!
1255 */
1256#define SQL_STR_DOUBLE(ch, escape_backslash) \
1257 ((ch) == '\'' || ((ch) == '\\' && (escape_backslash)))
1258
1259#define ESCAPE_STRING_SYNTAX 'E'
1260
1261
1262#define STATUS_OK (0)
1263#define STATUS_ERROR (-1)
1264#define STATUS_EOF (-2)
1265
1266/*
1267 * gettext support
1268 */
1269
1270#ifndef ENABLE_NLS
1271/* stuff we'd otherwise get from <libintl.h> */
1272#define gettext(x) (x)
1273#define dgettext(d,x) (x)
1274#define ngettext(s,p,n) ((n) == 1 ? (s) : (p))
1275#define dngettext(d,s,p,n) ((n) == 1 ? (s) : (p))
1276#endif
1277
1278#define _(x) gettext(x)
1279
1280/*
1281 * Use this to mark string constants as needing translation at some later
1282 * time, rather than immediately. This is useful for cases where you need
1283 * access to the original string and translated string, and for cases where
1284 * immediate translation is not possible, like when initializing global
1285 * variables.
1286 *
1287 * https://www.gnu.org/software/gettext/manual/html_node/Special-cases.html
1288 */
1289#define gettext_noop(x) (x)
1290
1291/*
1292 * To better support parallel installations of major PostgreSQL
1293 * versions as well as parallel installations of major library soname
1294 * versions, we mangle the gettext domain name by appending those
1295 * version numbers. The coding rule ought to be that wherever the
1296 * domain name is mentioned as a literal, it must be wrapped into
1297 * PG_TEXTDOMAIN(). The macros below do not work on non-literals; but
1298 * that is somewhat intentional because it avoids having to worry
1299 * about multiple states of premangling and postmangling as the values
1300 * are being passed around.
1301 *
1302 * Make sure this matches the installation rules in nls-global.mk.
1303 */
1304#ifdef SO_MAJOR_VERSION
1305#define PG_TEXTDOMAIN(domain) (domain CppAsString2(SO_MAJOR_VERSION) "-" PG_MAJORVERSION)
1306#else
1307#define PG_TEXTDOMAIN(domain) (domain "-" PG_MAJORVERSION)
1308#endif
1309
1310/*
1311 * Macro that allows to cast constness and volatile away from an expression, but doesn't
1312 * allow changing the underlying type. Enforcement of the latter
1313 * currently only works for gcc like compilers.
1314 *
1315 * Please note IT IS NOT SAFE to cast constness away if the result will ever
1316 * be modified (it would be undefined behaviour). Doing so anyway can cause
1317 * compiler misoptimizations or runtime crashes (modifying readonly memory).
1318 * It is only safe to use when the result will not be modified, but API
1319 * design or language restrictions prevent you from declaring that
1320 * (e.g. because a function returns both const and non-const variables).
1321 *
1322 * Note that this only works in function scope, not for global variables (it'd
1323 * be nice, but not trivial, to improve that).
1324 */
1325#if defined(__cplusplus)
1326#define unconstify(underlying_type, expr) const_cast<underlying_type>(expr)
1327#define unvolatize(underlying_type, expr) const_cast<underlying_type>(expr)
1328#else
1329#define unconstify(underlying_type, expr) \
1330 (StaticAssertVariableIsOfTypeMacro(expr, const underlying_type), \
1331 (underlying_type) (expr))
1332#define unvolatize(underlying_type, expr) \
1333 (StaticAssertVariableIsOfTypeMacro(expr, volatile underlying_type), \
1334 (underlying_type) (expr))
1335#endif
1336
1337/*
1338 * SSE2 instructions are part of the spec for the 64-bit x86 ISA. We assume
1339 * that compilers targeting this architecture understand SSE2 intrinsics.
1340 */
1341#if (defined(__x86_64__) || defined(_M_AMD64))
1342#define USE_SSE2
1343
1344/*
1345 * We use the Neon instructions if the compiler provides access to them (as
1346 * indicated by __ARM_NEON) and we are on aarch64. While Neon support is
1347 * technically optional for aarch64, it appears that all available 64-bit
1348 * hardware does have it. Neon exists in some 32-bit hardware too, but we
1349 * could not realistically use it there without a run-time check, which seems
1350 * not worth the trouble for now.
1351 */
1352#elif defined(__aarch64__) && defined(__ARM_NEON)
1353#define USE_NEON
1354#endif
1355
1356/* ----------------------------------------------------------------
1357 * Section 9: system-specific hacks
1358 *
1359 * This should be limited to things that absolutely have to be
1360 * included in every source file. The port-specific header file
1361 * is usually a better place for this sort of thing.
1362 * ----------------------------------------------------------------
1363 */
1364
1365/*
1366 * NOTE: this is also used for opening text files.
1367 * WIN32 treats Control-Z as EOF in files opened in text mode.
1368 * Therefore, we open files in binary mode on Win32 so we can read
1369 * literal control-Z. The other affect is that we see CRLF, but
1370 * that is OK because we can already handle those cleanly.
1371 */
1372#if defined(WIN32) || defined(__CYGWIN__)
1373#define PG_BINARY O_BINARY
1374#define PG_BINARY_A "ab"
1375#define PG_BINARY_R "rb"
1376#define PG_BINARY_W "wb"
1377#else
1378#define PG_BINARY 0
1379#define PG_BINARY_A "a"
1380#define PG_BINARY_R "r"
1381#define PG_BINARY_W "w"
1382#endif
1383
1384/*
1385 * Provide prototypes for routines not present in a particular machine's
1386 * standard C library.
1387 */
1388
1389#if !HAVE_DECL_FDATASYNC
1390extern int fdatasync(int fd);
1391#endif
1392
1393/*
1394 * Thin wrappers that convert strings to exactly 64-bit integers, matching our
1395 * definition of int64. (For the naming, compare that POSIX has
1396 * strtoimax()/strtoumax() which return intmax_t/uintmax_t.)
1397 */
1398#if SIZEOF_LONG == 8
1399#define strtoi64(str, endptr, base) ((int64) strtol(str, endptr, base))
1400#define strtou64(str, endptr, base) ((uint64) strtoul(str, endptr, base))
1401#elif SIZEOF_LONG_LONG == 8
1402#define strtoi64(str, endptr, base) ((int64) strtoll(str, endptr, base))
1403#define strtou64(str, endptr, base) ((uint64) strtoull(str, endptr, base))
1404#else
1405#error "cannot find integer type of the same size as int64_t"
1406#endif
1407
1408/*
1409 * Similarly, wrappers around labs()/llabs() matching our int64.
1410 */
1411#if SIZEOF_LONG == 8
1412#define i64abs(i) ((int64) labs(i))
1413#elif SIZEOF_LONG_LONG == 8
1414#define i64abs(i) ((int64) llabs(i))
1415#else
1416#error "cannot find integer type of the same size as int64_t"
1417#endif
1418
1419/*
1420 * Use "extern PGDLLIMPORT ..." to declare variables that are defined
1421 * in the core backend and need to be accessible by loadable modules.
1422 * No special marking is required on most ports.
1423 */
1424#ifndef PGDLLIMPORT
1425#define PGDLLIMPORT
1426#endif
1427
1428/*
1429 * Use "extern PGDLLEXPORT ..." to declare functions that are defined in
1430 * loadable modules and need to be callable by the core backend or other
1431 * loadable modules.
1432 * If the compiler knows __attribute__((visibility("*"))), we use that,
1433 * unless we already have a platform-specific definition. Otherwise,
1434 * no special marking is required.
1435 */
1436#ifndef PGDLLEXPORT
1437#ifdef HAVE_VISIBILITY_ATTRIBUTE
1438#define PGDLLEXPORT __attribute__((visibility("default")))
1439#else
1440#define PGDLLEXPORT
1441#endif
1442#endif
1443
1444/*
1445 * The following is used as the arg list for signal handlers. Any ports
1446 * that take something other than an int argument should override this in
1447 * their pg_config_os.h file. Note that variable names are required
1448 * because it is used in both the prototypes as well as the definitions.
1449 * Note also the long name. We expect that this won't collide with
1450 * other names causing compiler warnings.
1451 */
1452
1453#ifndef SIGNAL_ARGS
1454#define SIGNAL_ARGS int postgres_signal_arg
1455#endif
1456
1457/*
1458 * When there is no sigsetjmp, its functionality is provided by plain
1459 * setjmp. We now support the case only on Windows. However, it seems
1460 * that MinGW-64 has some longstanding issues in its setjmp support,
1461 * so on that toolchain we cheat and use gcc's builtins.
1462 */
1463#ifdef WIN32
1464#ifdef __MINGW64__
1465typedef intptr_t sigjmp_buf[5];
1466#define sigsetjmp(x,y) __builtin_setjmp(x)
1467#define siglongjmp __builtin_longjmp
1468#else /* !__MINGW64__ */
1469#define sigjmp_buf jmp_buf
1470#define sigsetjmp(x,y) setjmp(x)
1471#define siglongjmp longjmp
1472#endif /* __MINGW64__ */
1473#endif /* WIN32 */
1474
1475/* /port compatibility functions */
1476#include "port.h"
1477
1478/*
1479 * char16_t and char32_t
1480 * Unicode code points.
1481 *
1482 * uchar.h should always be available in C11, but it's not available on
1483 * Mac. However, these types are keywords in C++11, so when using C++, we
1484 * can't redefine the types.
1485 *
1486 * XXX: when uchar.h is available everywhere, we can remove this check and
1487 * just include uchar.h unconditionally.
1488 *
1489 * XXX: this section is out of place because uchar.h needs to be included
1490 * after port.h, due to an interaction with win32_port.h in some cases.
1491 */
1492#ifdef HAVE_UCHAR_H
1493#include <uchar.h>
1494#else
1495#ifndef __cplusplus
1496typedef uint16_t char16_t;
1497typedef uint32_t char32_t;
1498#endif
1499#endif
1500
1501/* IWYU pragma: end_exports */
1502
1503#endif /* C_H */
fdatasync
int fdatasync(int fd)
Definition win32fdatasync.c:23
char16_t
uint16_t char16_t
Definition c.h:1494
char32_t
uint32_t char32_t
Definition c.h:1495
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:1206
PGAlignedXLogBlock::data
char data[XLOG_BLCKSZ]
Definition c.h:1233
PGIOAlignedBlock::data
char data[BLCKSZ]
Definition c.h:1227

◆ BoolIsValid

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

Definition at line 848 of file c.h.

◆ BUFFERALIGN

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

Definition at line 900 of file c.h.

◆ BUFFERALIGN_DOWN

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

Definition at line 911 of file c.h.

◆ CACHELINEALIGN

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

Definition at line 901 of file c.h.

◆ CppAsString

#define CppAsString (   identifier)    #identifier

Definition at line 499 of file c.h.

◆ CppAsString2

#define CppAsString2 (   x)    CppAsString(x)

Definition at line 500 of file c.h.

◆ CppConcat

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

Definition at line 501 of file c.h.

◆ dgettext

#define dgettext (   d,
  x 
)    (x)

Definition at line 1271 of file c.h.

◆ dngettext

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

Definition at line 1273 of file c.h.

◆ DOUBLEALIGN

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

Definition at line 897 of file c.h.

◆ DOUBLEALIGN_DOWN

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

Definition at line 909 of file c.h.

◆ ESCAPE_STRING_SYNTAX

#define ESCAPE_STRING_SYNTAX   'E'

Definition at line 1257 of file c.h.

◆ FirstCommandId

#define FirstCommandId   ((CommandId) 0)

Definition at line 754 of file c.h.

◆ FLEXIBLE_ARRAY_MEMBER

#define FLEXIBLE_ARRAY_MEMBER   /* empty */

Definition at line 552 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 1171 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 1173 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 1175 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 1177 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 1179 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 1181 of file c.h.

◆ FLOAT8PASSBYVAL

#define FLOAT8PASSBYVAL   true

Definition at line 722 of file c.h.

◆ gettext

#define gettext (   x)    (x)

Definition at line 1270 of file c.h.

◆ gettext_noop

#define gettext_noop (   x)    (x)

Definition at line 1287 of file c.h.

◆ HAVE_INT64_TIMESTAMP

#define HAVE_INT64_TIMESTAMP

Definition at line 685 of file c.h.

◆ HIGHBIT

#define HIGHBIT   (0x80)

Definition at line 1245 of file c.h.

◆ INT64_FORMAT

#define INT64_FORMAT   "%" PRId64

Definition at line 636 of file c.h.

◆ INT64ALIGN

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

Definition at line 896 of file c.h.

◆ INT64ALIGN_DOWN

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

Definition at line 908 of file c.h.

◆ INT64CONST

#define INT64CONST (   x)    INT64_C(x)

Definition at line 632 of file c.h.

◆ INTALIGN

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

Definition at line 895 of file c.h.

◆ INTALIGN_DOWN

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

Definition at line 907 of file c.h.

◆ InvalidCommandId

#define InvalidCommandId   (~(CommandId)0)

Definition at line 755 of file c.h.

◆ InvalidOid8

#define InvalidOid8   ((Oid8) 0)

Definition at line 760 of file c.h.

◆ InvalidSubTransactionId

#define InvalidSubTransactionId   ((SubTransactionId) 0)

Definition at line 744 of file c.h.

◆ INVERT_COMPARE_RESULT

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

Definition at line 1195 of file c.h.

◆ IS_HIGHBIT_SET

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

Definition at line 1246 of file c.h.

◆ lengthof

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

Definition at line 875 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 1087 of file c.h.

◆ MAXALIGN

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

Definition at line 898 of file c.h.

◆ MAXALIGN64

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

Definition at line 923 of file c.h.

◆ MAXALIGN_DOWN

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

Definition at line 910 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:1097
Size
size_t Size
Definition c.h:691
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 1109 of file c.h.

1111 { \
1112 /* must be void* because we don't know if it is size_t aligned yet */ \
1113 void *_vstart = (void *) (start); \
1114 int _val = (val); \
1115 Size _len = (len); \
1116\
1117 if ((((uintptr_t) _vstart) & SIZE_T_ALIGN_MASK) == 0 && \
1118 (_len & SIZE_T_ALIGN_MASK) == 0 && \
1119 _val == 0 && \
1120 _len <= MEMSET_LOOP_LIMIT && \
1121 /* \
1122 * If MEMSET_LOOP_LIMIT == 0, optimizer should find \
1123 * the whole "if" false at compile time. \
1124 */ \
1125 MEMSET_LOOP_LIMIT != 0) \
1126 { \
1127 size_t *_start = (size_t *) _vstart; \
1128 size_t *_stop = (size_t *) ((char *) _start + _len); \
1129 while (_start < _stop) \
1130 *_start++ = 0; \
1131 } \

◆ 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 1139 of file c.h.

1144 { \
1145 size_t *_start = (size_t *) (start); \
1146 int _val = (val); \
1147 Size _len = (len); \
1148\
1149 if ((_len & SIZE_T_ALIGN_MASK) == 0 && \
1150 _val == 0 && \
1151 _len <= MEMSET_LOOP_LIMIT && \
1152 MEMSET_LOOP_LIMIT != 0) \
1153 { \
1154 size_t *_stop = (size_t *) ((char *) _start + _len); \
1155 while (_start < _stop) \
1156 *_start++ = 0; \
1157 } \

◆ Min

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

Definition at line 1093 of file c.h.

◆ NameStr

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

Definition at line 837 of file c.h.

◆ ngettext

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

Definition at line 1272 of file c.h.

◆ OffsetToPointer

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

Definition at line 857 of file c.h.

◆ OID8_FORMAT

#define OID8_FORMAT   "%" PRIu64

Definition at line 638 of file c.h.

◆ OID8_MAX

#define OID8_MAX   UINT64_MAX

Definition at line 761 of file c.h.

◆ Oid8IsValid

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

Definition at line 862 of file c.h.

◆ OidIsValid

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

Definition at line 860 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 1376 of file c.h.

◆ PG_BINARY_A

#define PG_BINARY_A   "a"

Definition at line 1377 of file c.h.

◆ PG_BINARY_R

#define PG_BINARY_R   "r"

Definition at line 1378 of file c.h.

◆ PG_BINARY_W

#define PG_BINARY_W   "w"

Definition at line 1379 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 672 of file c.h.

◆ PG_INT16_MIN

#define PG_INT16_MIN   INT16_MIN

Definition at line 671 of file c.h.

◆ PG_INT32_MAX

#define PG_INT32_MAX   INT32_MAX

Definition at line 675 of file c.h.

◆ PG_INT32_MIN

#define PG_INT32_MIN   INT32_MIN

Definition at line 674 of file c.h.

◆ PG_INT64_MAX

#define PG_INT64_MAX   INT64_MAX

Definition at line 678 of file c.h.

◆ PG_INT64_MIN

#define PG_INT64_MIN   INT64_MIN

Definition at line 677 of file c.h.

◆ PG_INT8_MAX

#define PG_INT8_MAX   INT8_MAX

Definition at line 669 of file c.h.

◆ PG_INT8_MIN

#define PG_INT8_MIN   INT8_MIN

Definition at line 668 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 1305 of file c.h.

◆ PG_UINT16_MAX

#define PG_UINT16_MAX   UINT16_MAX

Definition at line 673 of file c.h.

◆ PG_UINT32_MAX

#define PG_UINT32_MAX   UINT32_MAX

Definition at line 676 of file c.h.

◆ PG_UINT64_MAX

#define PG_UINT64_MAX   UINT64_MAX

Definition at line 679 of file c.h.

◆ PG_UINT8_MAX

#define PG_UINT8_MAX   UINT8_MAX

Definition at line 670 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 1438 of file c.h.

◆ PGDLLIMPORT

#define PGDLLIMPORT

Definition at line 1423 of file c.h.

◆ PointerIsAligned

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

Definition at line 854 of file c.h.

◆ RegProcedureIsValid

#define RegProcedureIsValid (   p)    OidIsValid(p)

Definition at line 864 of file c.h.

◆ SHORTALIGN

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

Definition at line 894 of file c.h.

◆ SHORTALIGN_DOWN

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

Definition at line 906 of file c.h.

◆ SIGNAL_ARGS

#define SIGNAL_ARGS   int postgres_signal_arg

Definition at line 1452 of file c.h.

◆ SIZE_T_ALIGN_MASK

#define SIZE_T_ALIGN_MASK   (sizeof(size_t) - 1)

Definition at line 1097 of file c.h.

◆ SQL_STR_DOUBLE

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

Definition at line 1254 of file c.h.

◆ StaticAssertDecl

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

Definition at line 1010 of file c.h.

◆ StaticAssertExpr

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

Definition at line 1035 of file c.h.

1036 {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 1017 of file c.h.

1018 { 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:499
StaticAssertDecl
#define StaticAssertDecl(condition, errmessage)
Definition c.h:1010

Definition at line 1070 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:1035

Definition at line 1073 of file c.h.

◆ STATUS_EOF

#define STATUS_EOF   (-2)

Definition at line 1262 of file c.h.

◆ STATUS_ERROR

#define STATUS_ERROR   (-1)

Definition at line 1261 of file c.h.

◆ STATUS_OK

#define STATUS_OK   (0)

Definition at line 1260 of file c.h.

◆ TopSubTransactionId

#define TopSubTransactionId   ((SubTransactionId) 1)

Definition at line 745 of file c.h.

◆ TYPEALIGN

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

Definition at line 891 of file c.h.

◆ TYPEALIGN64

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

Definition at line 919 of file c.h.

◆ TYPEALIGN_DOWN

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

Definition at line 903 of file c.h.

◆ UINT64_FORMAT

#define UINT64_FORMAT   "%" PRIu64

Definition at line 637 of file c.h.

◆ UINT64CONST

#define UINT64CONST (   x)    UINT64_C(x)

Definition at line 633 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:1073

Definition at line 1327 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 1330 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:527

Definition at line 517 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 527 of file c.h.

◆ VARHDRSZ

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

Definition at line 783 of file c.h.

Typedef Documentation

◆ bits16

typedef uint16 bits16

Definition at line 626 of file c.h.

◆ bits32

typedef uint32 bits32

Definition at line 627 of file c.h.

◆ bits8

typedef uint8 bits8

Definition at line 625 of file c.h.

◆ BpChar

typedef varlena BpChar

Definition at line 792 of file c.h.

◆ bytea

typedef varlena bytea

Definition at line 790 of file c.h.

◆ char16_t

typedef uint16_t char16_t

Definition at line 1494 of file c.h.

◆ char32_t

typedef uint32_t char32_t

Definition at line 1495 of file c.h.

◆ CommandId

typedef uint32 CommandId

Definition at line 752 of file c.h.

◆ float4

typedef float float4

Definition at line 715 of file c.h.

◆ float8

typedef double float8

Definition at line 716 of file c.h.

◆ Index

typedef unsigned int Index

Definition at line 700 of file c.h.

◆ int16

typedef int16_t int16

Definition at line 613 of file c.h.

◆ int32

typedef int32_t int32

Definition at line 614 of file c.h.

◆ int64

typedef int64_t int64

Definition at line 615 of file c.h.

◆ int8

typedef int8_t int8

Definition at line 612 of file c.h.

◆ LocalTransactionId

typedef uint32 LocalTransactionId

Definition at line 740 of file c.h.

◆ MultiXactId

typedef TransactionId MultiXactId

Definition at line 748 of file c.h.

◆ MultiXactOffset

typedef uint64 MultiXactOffset

Definition at line 750 of file c.h.

◆ Name

typedef NameData* Name

Definition at line 835 of file c.h.

◆ NameData

typedef struct nameData NameData

◆ Offset

typedef signed int Offset

Definition at line 710 of file c.h.

◆ Oid8

typedef uint64 Oid8

Definition at line 758 of file c.h.

◆ pg_funcptr_t

typedef void(* pg_funcptr_t) (void)

Definition at line 542 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 609 of file c.h.

◆ regproc

typedef Oid regproc

Definition at line 735 of file c.h.

◆ RegProcedure

typedef regproc RegProcedure

Definition at line 736 of file c.h.

◆ Size

typedef size_t Size

Definition at line 691 of file c.h.

◆ SubTransactionId

typedef uint32 SubTransactionId

Definition at line 742 of file c.h.

◆ text

typedef varlena text

Definition at line 791 of file c.h.

◆ TransactionId

typedef uint32 TransactionId

Definition at line 738 of file c.h.

◆ uint16

typedef uint16_t uint16

Definition at line 617 of file c.h.

◆ uint32

typedef uint32_t uint32

Definition at line 618 of file c.h.

◆ uint64

typedef uint64_t uint64

Definition at line 619 of file c.h.

◆ uint8

typedef uint8_t uint8

Definition at line 616 of file c.h.

◆ VarChar

typedef varlena VarChar

Definition at line 793 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:875
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().