PostgreSQL Source Code git master
Loading...
Searching...
No Matches
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 1237 of file c.h.

◆ __has_attribute

#define __has_attribute (   attribute)    0

Definition at line 125 of file c.h.

◆ Assert

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

Definition at line 906 of file c.h.

◆ AssertMacro

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

Definition at line 907 of file c.h.

◆ AssertPointerAlignment

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

Definition at line 941 of file c.h.

978 { static_assert(condition, errmessage); } while(0)
979
980/*
981 * StaticAssertExpr() is for use in an expression.
982 *
983 * See <https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3715.pdf> for some
984 * rationale for the precise behavior of this implementation. See
985 * <https://stackoverflow.com/questions/31311748> about the C++
986 * implementation.
987 *
988 * For compilers that don't support this, we fall back on a kluge that assumes
989 * the compiler will complain about a negative width for a struct bit-field.
990 * This will not include a helpful error message, but it beats not getting an
991 * error at all.
992 */
993#ifndef __cplusplus
994#if !defined(_MSC_VER) || _MSC_VER >= 1933
995#define StaticAssertExpr(condition, errmessage) \
996 ((void) sizeof(struct {static_assert(condition, errmessage); char a;}))
997#else /* _MSC_VER < 1933 */
998/*
999 * This compiler is buggy and fails to compile the previous variant; use a
1000 * fallback implementation.
1001 */
1002#define StaticAssertExpr(condition, errmessage) \
1003 ((void) sizeof(struct { int static_assert_failure : (condition) ? 1 : -1; }))
1004#endif /* _MSC_VER < 1933 */
1005#else /* __cplusplus */
1006#define StaticAssertExpr(condition, errmessage) \
1007 ([]{static_assert(condition, errmessage);})
1008#endif
1009
1010
1011/*
1012 * Compile-time checks that a variable (or expression) has the specified type.
1013 *
1014 * StaticAssertVariableIsOfType() can be used as a declaration.
1015 * StaticAssertVariableIsOfTypeMacro() is intended for use in macros, eg
1016 * #define foo(x) (StaticAssertVariableIsOfTypeMacro(x, int), bar(x))
1017 *
1018 * If we don't have __builtin_types_compatible_p, we can still assert that
1019 * the types have the same size. This is far from ideal (especially on 32-bit
1020 * platforms) but it provides at least some coverage.
1021 */
1022#ifdef HAVE__BUILTIN_TYPES_COMPATIBLE_P
1023#define StaticAssertVariableIsOfType(varname, typename) \
1024 StaticAssertDecl(__builtin_types_compatible_p(typeof(varname), typename), \
1025 CppAsString(varname) " does not have type " CppAsString(typename))
1026#define StaticAssertVariableIsOfTypeMacro(varname, typename) \
1027 (StaticAssertExpr(__builtin_types_compatible_p(typeof(varname), typename), \
1028 CppAsString(varname) " does not have type " CppAsString(typename)))
1029#else /* !HAVE__BUILTIN_TYPES_COMPATIBLE_P */
1030#define StaticAssertVariableIsOfType(varname, typename) \
1031 StaticAssertDecl(sizeof(varname) == sizeof(typename), \
1032 CppAsString(varname) " does not have type " CppAsString(typename))
1033#define StaticAssertVariableIsOfTypeMacro(varname, typename) \
1034 (StaticAssertExpr(sizeof(varname) == sizeof(typename), \
1035 CppAsString(varname) " does not have type " CppAsString(typename)))
1036#endif /* HAVE__BUILTIN_TYPES_COMPATIBLE_P */
1037
1038
1039/* ----------------------------------------------------------------
1040 * Section 7: widely useful macros
1041 * ----------------------------------------------------------------
1042 */
1043/*
1044 * Max
1045 * Return the maximum of two numbers.
1046 */
1047#define Max(x, y) ((x) > (y) ? (x) : (y))
1048
1049/*
1050 * Min
1051 * Return the minimum of two numbers.
1052 */
1053#define Min(x, y) ((x) < (y) ? (x) : (y))
1054
1055
1056/* Get a bit mask of the bits set in non-size_t aligned addresses */
1057#define SIZE_T_ALIGN_MASK (sizeof(size_t) - 1)
1058
1059/*
1060 * MemSet
1061 * Exactly the same as standard library function memset(), but considerably
1062 * faster for zeroing small size_t-aligned structures (such as parsetree
1063 * nodes). This has to be a macro because the main point is to avoid
1064 * function-call overhead. However, we have also found that the loop is
1065 * faster than native libc memset() on some platforms, even those with
1066 * assembler memset() functions. More research needs to be done, perhaps
1067 * with MEMSET_LOOP_LIMIT tests in configure.
1068 */
1069#define MemSet(start, val, len) \
1070 do \
1071 { \
1072 /* must be void* because we don't know if it is size_t aligned yet */ \
1073 void *_vstart = (void *) (start); \
1074 int _val = (val); \
1075 Size _len = (len); \
1076\
1077 if ((((uintptr_t) _vstart) & SIZE_T_ALIGN_MASK) == 0 && \
1078 (_len & SIZE_T_ALIGN_MASK) == 0 && \
1079 _val == 0 && \
1080 _len <= MEMSET_LOOP_LIMIT && \
1081 /* \
1082 * If MEMSET_LOOP_LIMIT == 0, optimizer should find \
1083 * the whole "if" false at compile time. \
1084 */ \
1085 MEMSET_LOOP_LIMIT != 0) \
1086 { \
1087 size_t *_start = (size_t *) _vstart; \
1088 size_t *_stop = (size_t *) ((char *) _start + _len); \
1089 while (_start < _stop) \
1090 *_start++ = 0; \
1091 } \
1092 else \
1093 memset(_vstart, _val, _len); \
1094 } while (0)
1095
1096/*
1097 * MemSetAligned is the same as MemSet except it omits the test to see if
1098 * "start" is size_t-aligned. This is okay to use if the caller knows
1099 * a-priori that the pointer is suitably aligned (typically, because he just
1100 * got it from palloc(), which always delivers a max-aligned pointer).
1101 */
1102#define MemSetAligned(start, val, len) \
1103 do \
1104 { \
1105 size_t *_start = (size_t *) (start); \
1106 int _val = (val); \
1107 Size _len = (len); \
1108\
1109 if ((_len & SIZE_T_ALIGN_MASK) == 0 && \
1110 _val == 0 && \
1111 _len <= MEMSET_LOOP_LIMIT && \
1112 MEMSET_LOOP_LIMIT != 0) \
1113 { \
1114 size_t *_stop = (size_t *) ((char *) _start + _len); \
1115 while (_start < _stop) \
1116 *_start++ = 0; \
1117 } \
1118 else \
1119 memset(_start, _val, _len); \
1120 } while (0)
1121
1122
1123/*
1124 * Macros for range-checking float values before converting to integer.
1125 * We must be careful here that the boundary values are expressed exactly
1126 * in the float domain. PG_INTnn_MIN is an exact power of 2, so it will
1127 * be represented exactly; but PG_INTnn_MAX isn't, and might get rounded
1128 * off, so avoid using that.
1129 * The input must be rounded to an integer beforehand, typically with rint(),
1130 * else we might draw the wrong conclusion about close-to-the-limit values.
1131 * These macros will do the right thing for Inf, but not necessarily for NaN,
1132 * so check isnan(num) first if that's a possibility.
1133 */
1134#define FLOAT4_FITS_IN_INT16(num) \
1135 ((num) >= (float4) PG_INT16_MIN && (num) < -((float4) PG_INT16_MIN))
1136#define FLOAT4_FITS_IN_INT32(num) \
1137 ((num) >= (float4) PG_INT32_MIN && (num) < -((float4) PG_INT32_MIN))
1138#define FLOAT4_FITS_IN_INT64(num) \
1139 ((num) >= (float4) PG_INT64_MIN && (num) < -((float4) PG_INT64_MIN))
1140#define FLOAT8_FITS_IN_INT16(num) \
1141 ((num) >= (float8) PG_INT16_MIN && (num) < -((float8) PG_INT16_MIN))
1142#define FLOAT8_FITS_IN_INT32(num) \
1143 ((num) >= (float8) PG_INT32_MIN && (num) < -((float8) PG_INT32_MIN))
1144#define FLOAT8_FITS_IN_INT64(num) \
1145 ((num) >= (float8) PG_INT64_MIN && (num) < -((float8) PG_INT64_MIN))
1146
1147
1148/* ----------------------------------------------------------------
1149 * Section 8: random stuff
1150 * ----------------------------------------------------------------
1151 */
1152
1153/*
1154 * Invert the sign of a qsort-style comparison result, ie, exchange negative
1155 * and positive integer values, being careful not to get the wrong answer
1156 * for INT_MIN. The argument should be an integral variable.
1157 */
1158#define INVERT_COMPARE_RESULT(var) \
1159 ((var) = ((var) < 0) ? 1 : -(var))
1160
1161/*
1162 * Use this, not "char buf[BLCKSZ]", to declare a field or local variable
1163 * holding a page buffer, if that page might be accessed as a page. Otherwise
1164 * the variable might be under-aligned, causing problems on alignment-picky
1165 * hardware.
1166 */
1167typedef struct PGAlignedBlock
1168{
1169 alignas(MAXIMUM_ALIGNOF) char data[BLCKSZ];
1170} PGAlignedBlock;
1171
1172/*
1173 * alignas with extended alignments is buggy in g++ < 9. As a simple
1174 * workaround, we disable these definitions in that case.
1175 *
1176 * <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89357>
1177 */
1178#if !(defined(__cplusplus) && defined(__GNUC__) && !defined(__clang__) && __GNUC__ < 9)
1179
1180/*
1181 * Use this to declare a field or local variable holding a page buffer, if that
1182 * page might be accessed as a page or passed to an SMgr I/O function. If
1183 * allocating using the MemoryContext API, the aligned allocation functions
1184 * should be used with PG_IO_ALIGN_SIZE. This alignment may be more efficient
1185 * for I/O in general, but may be strictly required on some platforms when
1186 * using direct I/O.
1187 */
1188typedef struct PGIOAlignedBlock
1189{
1190 alignas(PG_IO_ALIGN_SIZE) char data[BLCKSZ];
1191} PGIOAlignedBlock;
1192
1193/* Same, but for an XLOG_BLCKSZ-sized buffer */
1194typedef struct PGAlignedXLogBlock
1195{
1196 alignas(PG_IO_ALIGN_SIZE) char data[XLOG_BLCKSZ];
1197} PGAlignedXLogBlock;
1198
1199#else /* (g++ < 9) */
1200
1201/* Allow these types to be used as abstract types when using old g++ */
1202typedef struct PGIOAlignedBlock PGIOAlignedBlock;
1203typedef struct PGAlignedXLogBlock PGAlignedXLogBlock;
1204
1205#endif /* !(g++ < 9) */
1206
1207/* msb for char */
1208#define HIGHBIT (0x80)
1209#define IS_HIGHBIT_SET(ch) ((unsigned char)(ch) & HIGHBIT)
1210
1211/*
1212 * Support macros for escaping strings. escape_backslash should be true
1213 * if generating a non-standard-conforming string. Prefixing a string
1214 * with ESCAPE_STRING_SYNTAX guarantees it is non-standard-conforming.
1215 * Beware of multiple evaluation of the "ch" argument!
1216 */
1217#define SQL_STR_DOUBLE(ch, escape_backslash) \
1218 ((ch) == '\'' || ((ch) == '\\' && (escape_backslash)))
1219
1220#define ESCAPE_STRING_SYNTAX 'E'
1221
1222
1223#define STATUS_OK (0)
1224#define STATUS_ERROR (-1)
1225#define STATUS_EOF (-2)
1226
1227/*
1228 * gettext support
1229 */
1230
1231#ifndef ENABLE_NLS
1232/* stuff we'd otherwise get from <libintl.h> */
1233#define gettext(x) (x)
1234#define dgettext(d,x) (x)
1235#define ngettext(s,p,n) ((n) == 1 ? (s) : (p))
1236#define dngettext(d,s,p,n) ((n) == 1 ? (s) : (p))
1237#endif
1238
1239#define _(x) gettext(x)
1240
1241/*
1242 * Use this to mark string constants as needing translation at some later
1243 * time, rather than immediately. This is useful for cases where you need
1244 * access to the original string and translated string, and for cases where
1245 * immediate translation is not possible, like when initializing global
1246 * variables.
1247 *
1248 * https://www.gnu.org/software/gettext/manual/html_node/Special-cases.html
1249 */
1250#define gettext_noop(x) (x)
1251
1252/*
1253 * To better support parallel installations of major PostgreSQL
1254 * versions as well as parallel installations of major library soname
1255 * versions, we mangle the gettext domain name by appending those
1256 * version numbers. The coding rule ought to be that wherever the
1257 * domain name is mentioned as a literal, it must be wrapped into
1258 * PG_TEXTDOMAIN(). The macros below do not work on non-literals; but
1259 * that is somewhat intentional because it avoids having to worry
1260 * about multiple states of premangling and postmangling as the values
1261 * are being passed around.
1262 *
1263 * Make sure this matches the installation rules in nls-global.mk.
1264 */
1265#ifdef SO_MAJOR_VERSION
1266#define PG_TEXTDOMAIN(domain) (domain CppAsString2(SO_MAJOR_VERSION) "-" PG_MAJORVERSION)
1267#else
1268#define PG_TEXTDOMAIN(domain) (domain "-" PG_MAJORVERSION)
1269#endif
1270
1271/*
1272 * Macro that allows to cast constness and volatile away from an expression, but doesn't
1273 * allow changing the underlying type. Enforcement of the latter
1274 * currently only works for gcc like compilers.
1275 *
1276 * Please note IT IS NOT SAFE to cast constness away if the result will ever
1277 * be modified (it would be undefined behaviour). Doing so anyway can cause
1278 * compiler misoptimizations or runtime crashes (modifying readonly memory).
1279 * It is only safe to use when the result will not be modified, but API
1280 * design or language restrictions prevent you from declaring that
1281 * (e.g. because a function returns both const and non-const variables).
1282 *
1283 * Note that this only works in function scope, not for global variables (it'd
1284 * be nice, but not trivial, to improve that).
1285 */
1286#if defined(__cplusplus)
1287#define unconstify(underlying_type, expr) const_cast<underlying_type>(expr)
1288#define unvolatize(underlying_type, expr) const_cast<underlying_type>(expr)
1289#else
1290#define unconstify(underlying_type, expr) \
1291 (StaticAssertVariableIsOfTypeMacro(expr, const underlying_type), \
1292 (underlying_type) (expr))
1293#define unvolatize(underlying_type, expr) \
1294 (StaticAssertVariableIsOfTypeMacro(expr, volatile underlying_type), \
1295 (underlying_type) (expr))
1296#endif
1297
1298/*
1299 * SSE2 instructions are part of the spec for the 64-bit x86 ISA. We assume
1300 * that compilers targeting this architecture understand SSE2 intrinsics.
1301 */
1302#if (defined(__x86_64__) || defined(_M_AMD64))
1303#define USE_SSE2
1304
1305/*
1306 * We use the Neon instructions if the compiler provides access to them (as
1307 * indicated by __ARM_NEON) and we are on aarch64. While Neon support is
1308 * technically optional for aarch64, it appears that all available 64-bit
1309 * hardware does have it. Neon exists in some 32-bit hardware too, but we
1310 * could not realistically use it there without a run-time check, which seems
1311 * not worth the trouble for now.
1312 */
1313#elif defined(__aarch64__) && defined(__ARM_NEON)
1314#define USE_NEON
1315#endif
1316
1317/* ----------------------------------------------------------------
1318 * Section 9: system-specific hacks
1319 *
1320 * This should be limited to things that absolutely have to be
1321 * included in every source file. The port-specific header file
1322 * is usually a better place for this sort of thing.
1323 * ----------------------------------------------------------------
1324 */
1325
1326/*
1327 * NOTE: this is also used for opening text files.
1328 * WIN32 treats Control-Z as EOF in files opened in text mode.
1329 * Therefore, we open files in binary mode on Win32 so we can read
1330 * literal control-Z. The other affect is that we see CRLF, but
1331 * that is OK because we can already handle those cleanly.
1332 */
1333#if defined(WIN32) || defined(__CYGWIN__)
1334#define PG_BINARY O_BINARY
1335#define PG_BINARY_A "ab"
1336#define PG_BINARY_R "rb"
1337#define PG_BINARY_W "wb"
1338#else
1339#define PG_BINARY 0
1340#define PG_BINARY_A "a"
1341#define PG_BINARY_R "r"
1342#define PG_BINARY_W "w"
1343#endif
1344
1345/*
1346 * Provide prototypes for routines not present in a particular machine's
1347 * standard C library.
1348 */
1349
1350#if !HAVE_DECL_FDATASYNC
1351extern int fdatasync(int fd);
1352#endif
1353
1354/*
1355 * Thin wrappers that convert strings to exactly 64-bit integers, matching our
1356 * definition of int64. (For the naming, compare that POSIX has
1357 * strtoimax()/strtoumax() which return intmax_t/uintmax_t.)
1358 */
1359#if SIZEOF_LONG == 8
1360#define strtoi64(str, endptr, base) ((int64) strtol(str, endptr, base))
1361#define strtou64(str, endptr, base) ((uint64) strtoul(str, endptr, base))
1362#elif SIZEOF_LONG_LONG == 8
1363#define strtoi64(str, endptr, base) ((int64) strtoll(str, endptr, base))
1364#define strtou64(str, endptr, base) ((uint64) strtoull(str, endptr, base))
1365#else
1366#error "cannot find integer type of the same size as int64_t"
1367#endif
1368
1369/*
1370 * Similarly, wrappers around labs()/llabs() matching our int64.
1371 */
1372#if SIZEOF_LONG == 8
1373#define i64abs(i) ((int64) labs(i))
1374#elif SIZEOF_LONG_LONG == 8
1375#define i64abs(i) ((int64) llabs(i))
1376#else
1377#error "cannot find integer type of the same size as int64_t"
1378#endif
1379
1380/*
1381 * Use "extern PGDLLIMPORT ..." to declare variables that are defined
1382 * in the core backend and need to be accessible by loadable modules.
1383 * No special marking is required on most ports.
1384 */
1385#ifndef PGDLLIMPORT
1386#define PGDLLIMPORT
1387#endif
1388
1389/*
1390 * Use "extern PGDLLEXPORT ..." to declare functions that are defined in
1391 * loadable modules and need to be callable by the core backend or other
1392 * loadable modules.
1393 * If the compiler knows __attribute__((visibility("*"))), we use that,
1394 * unless we already have a platform-specific definition. Otherwise,
1395 * no special marking is required.
1396 */
1397#ifndef PGDLLEXPORT
1398#ifdef HAVE_VISIBILITY_ATTRIBUTE
1399#define PGDLLEXPORT __attribute__((visibility("default")))
1400#else
1401#define PGDLLEXPORT
1402#endif
1403#endif
1404
1405/*
1406 * The following is used as the arg list for signal handlers. Any ports
1407 * that take something other than an int argument should override this in
1408 * their pg_config_os.h file. Note that variable names are required
1409 * because it is used in both the prototypes as well as the definitions.
1410 * Note also the long name. We expect that this won't collide with
1411 * other names causing compiler warnings.
1412 */
1413
1414#ifndef SIGNAL_ARGS
1415#define SIGNAL_ARGS int postgres_signal_arg
1416#endif
1417
1418/*
1419 * When there is no sigsetjmp, its functionality is provided by plain
1420 * setjmp. We now support the case only on Windows. However, it seems
1421 * that MinGW-64 has some longstanding issues in its setjmp support,
1422 * so on that toolchain we cheat and use gcc's builtins.
1423 */
1424#ifdef WIN32
1425#ifdef __MINGW64__
1426typedef intptr_t sigjmp_buf[5];
1427#define sigsetjmp(x,y) __builtin_setjmp(x)
1428#define siglongjmp __builtin_longjmp
1429#else /* !__MINGW64__ */
1430#define sigjmp_buf jmp_buf
1431#define sigsetjmp(x,y) setjmp(x)
1432#define siglongjmp longjmp
1433#endif /* __MINGW64__ */
1434#endif /* WIN32 */
1435
1436/* /port compatibility functions */
1437#include "port.h"
1438
1439/*
1440 * char16_t and char32_t
1441 * Unicode code points.
1442 *
1443 * uchar.h should always be available in C11, but it's not available on
1444 * Mac. However, these types are keywords in C++11, so when using C++, we
1445 * can't redefine the types.
1446 *
1447 * XXX: when uchar.h is available everywhere, we can remove this check and
1448 * just include uchar.h unconditionally.
1449 *
1450 * XXX: this section is out of place because uchar.h needs to be included
1451 * after port.h, due to an interaction with win32_port.h in some cases.
1452 */
1453#ifdef HAVE_UCHAR_H
1454#include <uchar.h>
1455#else
1456#ifndef __cplusplus
1457typedef uint16_t char16_t;
1458typedef uint32_t char32_t;
1459#endif
1460#endif
1461
1462/* IWYU pragma: end_exports */
1463
1464#endif /* C_H */
fdatasync
int fdatasync(int fd)
Definition win32fdatasync.c:23
char16_t
uint16_t char16_t
Definition c.h:1455
char32_t
uint32_t char32_t
Definition c.h:1456
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:1167
PGAlignedXLogBlock::data
char data[XLOG_BLCKSZ]
Definition c.h:1194
PGIOAlignedBlock::data
char data[BLCKSZ]
Definition c.h:1188

◆ BoolIsValid

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

Definition at line 809 of file c.h.

◆ BUFFERALIGN

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

Definition at line 861 of file c.h.

◆ BUFFERALIGN_DOWN

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

Definition at line 872 of file c.h.

◆ CACHELINEALIGN

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

Definition at line 862 of file c.h.

◆ CppAsString

#define CppAsString (   identifier)    #identifier

Definition at line 460 of file c.h.

◆ CppAsString2

#define CppAsString2 (   x)    CppAsString(x)

Definition at line 461 of file c.h.

◆ CppConcat

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

Definition at line 462 of file c.h.

◆ dgettext

#define dgettext (   d,
  x 
)    (x)

Definition at line 1232 of file c.h.

◆ dngettext

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

Definition at line 1234 of file c.h.

◆ DOUBLEALIGN

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

Definition at line 858 of file c.h.

◆ DOUBLEALIGN_DOWN

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

Definition at line 870 of file c.h.

◆ ESCAPE_STRING_SYNTAX

#define ESCAPE_STRING_SYNTAX   'E'

Definition at line 1218 of file c.h.

◆ FirstCommandId

#define FirstCommandId   ((CommandId) 0)

Definition at line 715 of file c.h.

◆ FLEXIBLE_ARRAY_MEMBER

#define FLEXIBLE_ARRAY_MEMBER   /* empty */

Definition at line 513 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 1132 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 1134 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 1136 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 1138 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 1140 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 1142 of file c.h.

◆ FLOAT8PASSBYVAL

#define FLOAT8PASSBYVAL   true

Definition at line 683 of file c.h.

◆ gettext

#define gettext (   x)    (x)

Definition at line 1231 of file c.h.

◆ gettext_noop

#define gettext_noop (   x)    (x)

Definition at line 1248 of file c.h.

◆ HAVE_INT64_TIMESTAMP

#define HAVE_INT64_TIMESTAMP

Definition at line 646 of file c.h.

◆ HIGHBIT

#define HIGHBIT   (0x80)

Definition at line 1206 of file c.h.

◆ INT64_FORMAT

#define INT64_FORMAT   "%" PRId64

Definition at line 597 of file c.h.

◆ INT64ALIGN

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

Definition at line 857 of file c.h.

◆ INT64ALIGN_DOWN

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

Definition at line 869 of file c.h.

◆ INT64CONST

#define INT64CONST (   x)    INT64_C(x)

Definition at line 593 of file c.h.

◆ INTALIGN

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

Definition at line 856 of file c.h.

◆ INTALIGN_DOWN

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

Definition at line 868 of file c.h.

◆ InvalidCommandId

#define InvalidCommandId   (~(CommandId)0)

Definition at line 716 of file c.h.

◆ InvalidOid8

#define InvalidOid8   ((Oid8) 0)

Definition at line 721 of file c.h.

◆ InvalidSubTransactionId

#define InvalidSubTransactionId   ((SubTransactionId) 0)

Definition at line 705 of file c.h.

◆ INVERT_COMPARE_RESULT

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

Definition at line 1156 of file c.h.

◆ IS_HIGHBIT_SET

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

Definition at line 1207 of file c.h.

◆ lengthof

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

Definition at line 836 of file c.h.

◆ likely

#define likely (   x)    ((x) != 0)

Definition at line 423 of file c.h.

◆ Max

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

Definition at line 1048 of file c.h.

◆ MAXALIGN

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

Definition at line 859 of file c.h.

◆ MAXALIGN64

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

Definition at line 884 of file c.h.

◆ MAXALIGN_DOWN

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

Definition at line 871 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:1058
Size
size_t Size
Definition c.h:652
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 1070 of file c.h.

1072 { \
1073 /* must be void* because we don't know if it is size_t aligned yet */ \
1074 void *_vstart = (void *) (start); \
1075 int _val = (val); \
1076 Size _len = (len); \
1077\
1078 if ((((uintptr_t) _vstart) & SIZE_T_ALIGN_MASK) == 0 && \
1079 (_len & SIZE_T_ALIGN_MASK) == 0 && \
1080 _val == 0 && \
1081 _len <= MEMSET_LOOP_LIMIT && \
1082 /* \
1083 * If MEMSET_LOOP_LIMIT == 0, optimizer should find \
1084 * the whole "if" false at compile time. \
1085 */ \
1086 MEMSET_LOOP_LIMIT != 0) \
1087 { \
1088 size_t *_start = (size_t *) _vstart; \
1089 size_t *_stop = (size_t *) ((char *) _start + _len); \
1090 while (_start < _stop) \
1091 *_start++ = 0; \
1092 } \

◆ 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 1100 of file c.h.

1105 { \
1106 size_t *_start = (size_t *) (start); \
1107 int _val = (val); \
1108 Size _len = (len); \
1109\
1110 if ((_len & SIZE_T_ALIGN_MASK) == 0 && \
1111 _val == 0 && \
1112 _len <= MEMSET_LOOP_LIMIT && \
1113 MEMSET_LOOP_LIMIT != 0) \
1114 { \
1115 size_t *_stop = (size_t *) ((char *) _start + _len); \
1116 while (_start < _stop) \
1117 *_start++ = 0; \
1118 } \

◆ Min

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

Definition at line 1054 of file c.h.

◆ NameStr

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

Definition at line 798 of file c.h.

◆ ngettext

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

Definition at line 1233 of file c.h.

◆ OffsetToPointer

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

Definition at line 818 of file c.h.

◆ OID8_FORMAT

#define OID8_FORMAT   "%" PRIu64

Definition at line 599 of file c.h.

◆ OID8_MAX

#define OID8_MAX   UINT64_MAX

Definition at line 722 of file c.h.

◆ Oid8IsValid

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

Definition at line 823 of file c.h.

◆ OidIsValid

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

Definition at line 821 of file c.h.

◆ pg_assume

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

Definition at line 409 of file c.h.

◆ pg_attribute_always_inline

#define pg_attribute_always_inline   inline

Definition at line 291 of file c.h.

◆ pg_attribute_cold

#define pg_attribute_cold

Definition at line 332 of file c.h.

◆ pg_attribute_format_arg

#define pg_attribute_format_arg (   a)

Definition at line 253 of file c.h.

◆ pg_attribute_hot

#define pg_attribute_hot

Definition at line 338 of file c.h.

◆ pg_attribute_no_sanitize_address

#define pg_attribute_no_sanitize_address ( )

Definition at line 189 of file c.h.

◆ pg_attribute_no_sanitize_alignment

#define pg_attribute_no_sanitize_alignment ( )

Definition at line 201 of file c.h.

◆ pg_attribute_nonnull

#define pg_attribute_nonnull (   ...)

Definition at line 212 of file c.h.

◆ pg_attribute_printf

#define pg_attribute_printf (   f,
  a 
)

Definition at line 254 of file c.h.

◆ pg_attribute_target

#define pg_attribute_target (   ...)

Definition at line 224 of file c.h.

◆ pg_attribute_unused

#define pg_attribute_unused ( )

Definition at line 132 of file c.h.

◆ PG_BINARY

#define PG_BINARY   0

Definition at line 1337 of file c.h.

◆ PG_BINARY_A

#define PG_BINARY_A   "a"

Definition at line 1338 of file c.h.

◆ PG_BINARY_R

#define PG_BINARY_R   "r"

Definition at line 1339 of file c.h.

◆ PG_BINARY_W

#define PG_BINARY_W   "w"

Definition at line 1340 of file c.h.

◆ pg_fallthrough

#define pg_fallthrough

Definition at line 144 of file c.h.

◆ PG_INT16_MAX

#define PG_INT16_MAX   INT16_MAX

Definition at line 633 of file c.h.

◆ PG_INT16_MIN

#define PG_INT16_MIN   INT16_MIN

Definition at line 632 of file c.h.

◆ PG_INT32_MAX

#define PG_INT32_MAX   INT32_MAX

Definition at line 636 of file c.h.

◆ PG_INT32_MIN

#define PG_INT32_MIN   INT32_MIN

Definition at line 635 of file c.h.

◆ PG_INT64_MAX

#define PG_INT64_MAX   INT64_MAX

Definition at line 639 of file c.h.

◆ PG_INT64_MIN

#define PG_INT64_MIN   INT64_MIN

Definition at line 638 of file c.h.

◆ PG_INT8_MAX

#define PG_INT8_MAX   INT8_MAX

Definition at line 630 of file c.h.

◆ PG_INT8_MIN

#define PG_INT8_MIN   INT8_MIN

Definition at line 629 of file c.h.

◆ pg_nodiscard

#define pg_nodiscard

Definition at line 156 of file c.h.

◆ pg_noinline

#define pg_noinline

Definition at line 307 of file c.h.

◆ pg_noreturn

#define pg_noreturn

Definition at line 176 of file c.h.

◆ PG_PRINTF_ATTRIBUTE

#define PG_PRINTF_ATTRIBUTE   PG_C_PRINTF_ATTRIBUTE

Definition at line 243 of file c.h.

◆ PG_TEXTDOMAIN

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

Definition at line 1266 of file c.h.

◆ PG_UINT16_MAX

#define PG_UINT16_MAX   UINT16_MAX

Definition at line 634 of file c.h.

◆ PG_UINT32_MAX

#define PG_UINT32_MAX   UINT32_MAX

Definition at line 637 of file c.h.

◆ PG_UINT64_MAX

#define PG_UINT64_MAX   UINT64_MAX

Definition at line 640 of file c.h.

◆ PG_UINT8_MAX

#define PG_UINT8_MAX   UINT8_MAX

Definition at line 631 of file c.h.

◆ pg_unreachable

#define pg_unreachable ( )    abort()

Definition at line 353 of file c.h.

◆ PG_USED_FOR_ASSERTS_ONLY

#define PG_USED_FOR_ASSERTS_ONLY   pg_attribute_unused()

Definition at line 235 of file c.h.

◆ PGDLLEXPORT

#define PGDLLEXPORT

Definition at line 1399 of file c.h.

◆ PGDLLIMPORT

#define PGDLLIMPORT

Definition at line 1384 of file c.h.

◆ PointerIsAligned

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

Definition at line 815 of file c.h.

◆ RegProcedureIsValid

#define RegProcedureIsValid (   p)    OidIsValid(p)

Definition at line 825 of file c.h.

◆ SHORTALIGN

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

Definition at line 855 of file c.h.

◆ SHORTALIGN_DOWN

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

Definition at line 867 of file c.h.

◆ SIGNAL_ARGS

#define SIGNAL_ARGS   int postgres_signal_arg

Definition at line 1413 of file c.h.

◆ SIZE_T_ALIGN_MASK

#define SIZE_T_ALIGN_MASK   (sizeof(size_t) - 1)

Definition at line 1058 of file c.h.

◆ SQL_STR_DOUBLE

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

Definition at line 1215 of file c.h.

◆ StaticAssertDecl

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

Definition at line 971 of file c.h.

◆ StaticAssertExpr

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

Definition at line 996 of file c.h.

997 {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 978 of file c.h.

979 { 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:460
StaticAssertDecl
#define StaticAssertDecl(condition, errmessage)
Definition c.h:971

Definition at line 1031 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:996

Definition at line 1034 of file c.h.

◆ STATUS_EOF

#define STATUS_EOF   (-2)

Definition at line 1223 of file c.h.

◆ STATUS_ERROR

#define STATUS_ERROR   (-1)

Definition at line 1222 of file c.h.

◆ STATUS_OK

#define STATUS_OK   (0)

Definition at line 1221 of file c.h.

◆ TopSubTransactionId

#define TopSubTransactionId   ((SubTransactionId) 1)

Definition at line 706 of file c.h.

◆ TYPEALIGN

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

Definition at line 852 of file c.h.

◆ TYPEALIGN64

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

Definition at line 880 of file c.h.

◆ TYPEALIGN_DOWN

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

Definition at line 864 of file c.h.

◆ UINT64_FORMAT

#define UINT64_FORMAT   "%" PRIu64

Definition at line 598 of file c.h.

◆ UINT64CONST

#define UINT64CONST (   x)    UINT64_C(x)

Definition at line 594 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:1034

Definition at line 1288 of file c.h.

◆ unlikely

#define unlikely (   x)    ((x) != 0)

Definition at line 424 of file c.h.

◆ unvolatize

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

Definition at line 1291 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:488

Definition at line 478 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 488 of file c.h.

◆ VARHDRSZ

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

Definition at line 744 of file c.h.

Typedef Documentation

◆ bits16

typedef uint16 bits16

Definition at line 587 of file c.h.

◆ bits32

typedef uint32 bits32

Definition at line 588 of file c.h.

◆ bits8

typedef uint8 bits8

Definition at line 586 of file c.h.

◆ BpChar

typedef varlena BpChar

Definition at line 753 of file c.h.

◆ bytea

typedef varlena bytea

Definition at line 751 of file c.h.

◆ char16_t

typedef uint16_t char16_t

Definition at line 1455 of file c.h.

◆ char32_t

typedef uint32_t char32_t

Definition at line 1456 of file c.h.

◆ CommandId

typedef uint32 CommandId

Definition at line 713 of file c.h.

◆ float4

typedef float float4

Definition at line 676 of file c.h.

◆ float8

typedef double float8

Definition at line 677 of file c.h.

◆ Index

typedef unsigned int Index

Definition at line 661 of file c.h.

◆ int16

typedef int16_t int16

Definition at line 574 of file c.h.

◆ int32

typedef int32_t int32

Definition at line 575 of file c.h.

◆ int64

typedef int64_t int64

Definition at line 576 of file c.h.

◆ int8

typedef int8_t int8

Definition at line 573 of file c.h.

◆ LocalTransactionId

typedef uint32 LocalTransactionId

Definition at line 701 of file c.h.

◆ MultiXactId

typedef TransactionId MultiXactId

Definition at line 709 of file c.h.

◆ MultiXactOffset

typedef uint64 MultiXactOffset

Definition at line 711 of file c.h.

◆ Name

typedef NameData* Name

Definition at line 796 of file c.h.

◆ NameData

typedef struct nameData NameData

◆ Offset

typedef signed int Offset

Definition at line 671 of file c.h.

◆ Oid8

typedef uint64 Oid8

Definition at line 719 of file c.h.

◆ pg_funcptr_t

typedef void(* pg_funcptr_t) (void)

Definition at line 503 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 570 of file c.h.

◆ regproc

typedef Oid regproc

Definition at line 696 of file c.h.

◆ RegProcedure

typedef regproc RegProcedure

Definition at line 697 of file c.h.

◆ Size

typedef size_t Size

Definition at line 652 of file c.h.

◆ SubTransactionId

typedef uint32 SubTransactionId

Definition at line 703 of file c.h.

◆ text

typedef varlena text

Definition at line 752 of file c.h.

◆ TransactionId

typedef uint32 TransactionId

Definition at line 699 of file c.h.

◆ uint16

typedef uint16_t uint16

Definition at line 578 of file c.h.

◆ uint32

typedef uint32_t uint32

Definition at line 579 of file c.h.

◆ uint64

typedef uint64_t uint64

Definition at line 580 of file c.h.

◆ uint8

typedef uint8_t uint8

Definition at line 577 of file c.h.

◆ VarChar

typedef varlena VarChar

Definition at line 754 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:836
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().