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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:
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Go to the source code of this file.

Data Structures

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

Macros

#define __has_attribute(attribute)   0
 
#define pg_attribute_unused()
 
#define pg_fallthrough
 
#define pg_nodiscard
 
#define pg_noreturn   _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, const pg_signal_info *pg_siginfo
 

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 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 struct pg_signal_info pg_signal_info
 
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 1274 of file c.h.

◆ __has_attribute

#define __has_attribute (   attribute)    0

Definition at line 138 of file c.h.

◆ Assert

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

Definition at line 943 of file c.h.

◆ AssertMacro

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

Definition at line 944 of file c.h.

◆ AssertPointerAlignment

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

Definition at line 978 of file c.h.

1015 { static_assert(condition, errmessage); } while(0)
1016
1017/*
1018 * StaticAssertExpr() is for use in an expression.
1019 *
1020 * See <https://www.open-std.org/jtc1/sc22/wg14/www/docs/n3715.pdf> for some
1021 * rationale for the precise behavior of this implementation. See
1022 * <https://stackoverflow.com/questions/31311748> about the C++
1023 * implementation.
1024 *
1025 * For compilers that don't support this, we fall back on a kluge that assumes
1026 * the compiler will complain about a negative width for a struct bit-field.
1027 * This will not include a helpful error message, but it beats not getting an
1028 * error at all.
1029 */
1030#ifndef __cplusplus
1031#if !defined(_MSC_VER) || _MSC_VER >= 1933
1032#define StaticAssertExpr(condition, errmessage) \
1033 ((void) sizeof(struct {static_assert(condition, errmessage); char a;}))
1034#else /* _MSC_VER < 1933 */
1035/*
1036 * This compiler is buggy and fails to compile the previous variant; use a
1037 * fallback implementation.
1038 */
1039#define StaticAssertExpr(condition, errmessage) \
1040 ((void) sizeof(struct { int static_assert_failure : (condition) ? 1 : -1; }))
1041#endif /* _MSC_VER < 1933 */
1042#else /* __cplusplus */
1043#define StaticAssertExpr(condition, errmessage) \
1044 ([]{static_assert(condition, errmessage);})
1045#endif
1046
1047
1048/*
1049 * Compile-time checks that a variable (or expression) has the specified type.
1050 *
1051 * StaticAssertVariableIsOfType() can be used as a declaration.
1052 * StaticAssertVariableIsOfTypeMacro() is intended for use in macros, eg
1053 * #define foo(x) (StaticAssertVariableIsOfTypeMacro(x, int), bar(x))
1054 *
1055 * If we don't have __builtin_types_compatible_p, we can still assert that
1056 * the types have the same size. This is far from ideal (especially on 32-bit
1057 * platforms) but it provides at least some coverage.
1058 */
1059#ifdef HAVE__BUILTIN_TYPES_COMPATIBLE_P
1060#define StaticAssertVariableIsOfType(varname, typename) \
1061 StaticAssertDecl(__builtin_types_compatible_p(typeof(varname), typename), \
1062 CppAsString(varname) " does not have type " CppAsString(typename))
1063#define StaticAssertVariableIsOfTypeMacro(varname, typename) \
1064 (StaticAssertExpr(__builtin_types_compatible_p(typeof(varname), typename), \
1065 CppAsString(varname) " does not have type " CppAsString(typename)))
1066#else /* !HAVE__BUILTIN_TYPES_COMPATIBLE_P */
1067#define StaticAssertVariableIsOfType(varname, typename) \
1068 StaticAssertDecl(sizeof(varname) == sizeof(typename), \
1069 CppAsString(varname) " does not have type " CppAsString(typename))
1070#define StaticAssertVariableIsOfTypeMacro(varname, typename) \
1071 (StaticAssertExpr(sizeof(varname) == sizeof(typename), \
1072 CppAsString(varname) " does not have type " CppAsString(typename)))
1073#endif /* HAVE__BUILTIN_TYPES_COMPATIBLE_P */
1074
1075
1076/* ----------------------------------------------------------------
1077 * Section 7: widely useful macros
1078 * ----------------------------------------------------------------
1079 */
1080/*
1081 * Max
1082 * Return the maximum of two numbers.
1083 */
1084#define Max(x, y) ((x) > (y) ? (x) : (y))
1085
1086/*
1087 * Min
1088 * Return the minimum of two numbers.
1089 */
1090#define Min(x, y) ((x) < (y) ? (x) : (y))
1091
1092
1093/* Get a bit mask of the bits set in non-size_t aligned addresses */
1094#define SIZE_T_ALIGN_MASK (sizeof(size_t) - 1)
1095
1096/*
1097 * MemSet
1098 * Exactly the same as standard library function memset(), but considerably
1099 * faster for zeroing small size_t-aligned structures (such as parsetree
1100 * nodes). This has to be a macro because the main point is to avoid
1101 * function-call overhead. However, we have also found that the loop is
1102 * faster than native libc memset() on some platforms, even those with
1103 * assembler memset() functions. More research needs to be done, perhaps
1104 * with MEMSET_LOOP_LIMIT tests in configure.
1105 */
1106#define MemSet(start, val, len) \
1107 do \
1108 { \
1109 /* must be void* because we don't know if it is size_t aligned yet */ \
1110 void *_vstart = (void *) (start); \
1111 int _val = (val); \
1112 Size _len = (len); \
1113\
1114 if ((((uintptr_t) _vstart) & SIZE_T_ALIGN_MASK) == 0 && \
1115 (_len & SIZE_T_ALIGN_MASK) == 0 && \
1116 _val == 0 && \
1117 _len <= MEMSET_LOOP_LIMIT && \
1118 /* \
1119 * If MEMSET_LOOP_LIMIT == 0, optimizer should find \
1120 * the whole "if" false at compile time. \
1121 */ \
1122 MEMSET_LOOP_LIMIT != 0) \
1123 { \
1124 size_t *_start = (size_t *) _vstart; \
1125 size_t *_stop = (size_t *) ((char *) _start + _len); \
1126 while (_start < _stop) \
1127 *_start++ = 0; \
1128 } \
1129 else \
1130 memset(_vstart, _val, _len); \
1131 } while (0)
1132
1133/*
1134 * MemSetAligned is the same as MemSet except it omits the test to see if
1135 * "start" is size_t-aligned. This is okay to use if the caller knows
1136 * a-priori that the pointer is suitably aligned (typically, because he just
1137 * got it from palloc(), which always delivers a max-aligned pointer).
1138 */
1139#define MemSetAligned(start, val, len) \
1140 do \
1141 { \
1142 size_t *_start = (size_t *) (start); \
1143 int _val = (val); \
1144 Size _len = (len); \
1145\
1146 if ((_len & SIZE_T_ALIGN_MASK) == 0 && \
1147 _val == 0 && \
1148 _len <= MEMSET_LOOP_LIMIT && \
1149 MEMSET_LOOP_LIMIT != 0) \
1150 { \
1151 size_t *_stop = (size_t *) ((char *) _start + _len); \
1152 while (_start < _stop) \
1153 *_start++ = 0; \
1154 } \
1155 else \
1156 memset(_start, _val, _len); \
1157 } while (0)
1158
1159
1160/*
1161 * Macros for range-checking float values before converting to integer.
1162 * We must be careful here that the boundary values are expressed exactly
1163 * in the float domain. PG_INTnn_MIN is an exact power of 2, so it will
1164 * be represented exactly; but PG_INTnn_MAX isn't, and might get rounded
1165 * off, so avoid using that.
1166 * The input must be rounded to an integer beforehand, typically with rint(),
1167 * else we might draw the wrong conclusion about close-to-the-limit values.
1168 * These macros will do the right thing for Inf, but not necessarily for NaN,
1169 * so check isnan(num) first if that's a possibility.
1170 */
1171#define FLOAT4_FITS_IN_INT16(num) \
1172 ((num) >= (float4) PG_INT16_MIN && (num) < -((float4) PG_INT16_MIN))
1173#define FLOAT4_FITS_IN_INT32(num) \
1174 ((num) >= (float4) PG_INT32_MIN && (num) < -((float4) PG_INT32_MIN))
1175#define FLOAT4_FITS_IN_INT64(num) \
1176 ((num) >= (float4) PG_INT64_MIN && (num) < -((float4) PG_INT64_MIN))
1177#define FLOAT8_FITS_IN_INT16(num) \
1178 ((num) >= (float8) PG_INT16_MIN && (num) < -((float8) PG_INT16_MIN))
1179#define FLOAT8_FITS_IN_INT32(num) \
1180 ((num) >= (float8) PG_INT32_MIN && (num) < -((float8) PG_INT32_MIN))
1181#define FLOAT8_FITS_IN_INT64(num) \
1182 ((num) >= (float8) PG_INT64_MIN && (num) < -((float8) PG_INT64_MIN))
1183
1184
1185/* ----------------------------------------------------------------
1186 * Section 8: random stuff
1187 * ----------------------------------------------------------------
1188 */
1189
1190/*
1191 * Invert the sign of a qsort-style comparison result, ie, exchange negative
1192 * and positive integer values, being careful not to get the wrong answer
1193 * for INT_MIN. The argument should be an integral variable.
1194 */
1195#define INVERT_COMPARE_RESULT(var) \
1196 ((var) = ((var) < 0) ? 1 : -(var))
1197
1198/*
1199 * Use this, not "char buf[BLCKSZ]", to declare a field or local variable
1200 * holding a page buffer, if that page might be accessed as a page. Otherwise
1201 * the variable might be under-aligned, causing problems on alignment-picky
1202 * hardware.
1203 */
1204typedef struct PGAlignedBlock
1205{
1206 alignas(MAXIMUM_ALIGNOF) char data[BLCKSZ];
1207} PGAlignedBlock;
1208
1209/*
1210 * alignas with extended alignments is buggy in g++ < 9. As a simple
1211 * workaround, we disable these definitions in that case.
1212 *
1213 * <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89357>
1214 */
1215#if !(defined(__cplusplus) && defined(__GNUC__) && !defined(__clang__) && __GNUC__ < 9)
1216
1217/*
1218 * Use this to declare a field or local variable holding a page buffer, if that
1219 * page might be accessed as a page or passed to an SMgr I/O function. If
1220 * allocating using the MemoryContext API, the aligned allocation functions
1221 * should be used with PG_IO_ALIGN_SIZE. This alignment may be more efficient
1222 * for I/O in general, but may be strictly required on some platforms when
1223 * using direct I/O.
1224 */
1225typedef struct PGIOAlignedBlock
1226{
1227 alignas(PG_IO_ALIGN_SIZE) char data[BLCKSZ];
1228} PGIOAlignedBlock;
1229
1230/* Same, but for an XLOG_BLCKSZ-sized buffer */
1231typedef struct PGAlignedXLogBlock
1232{
1233 alignas(PG_IO_ALIGN_SIZE) char data[XLOG_BLCKSZ];
1234} PGAlignedXLogBlock;
1235
1236#else /* (g++ < 9) */
1237
1238/* Allow these types to be used as abstract types when using old g++ */
1239typedef struct PGIOAlignedBlock PGIOAlignedBlock;
1240typedef struct PGAlignedXLogBlock PGAlignedXLogBlock;
1241
1242#endif /* !(g++ < 9) */
1243
1244/* msb for char */
1245#define HIGHBIT (0x80)
1246#define IS_HIGHBIT_SET(ch) ((unsigned char)(ch) & HIGHBIT)
1247
1248/*
1249 * Support macros for escaping strings. escape_backslash should be true
1250 * if generating a non-standard-conforming string. Prefixing a string
1251 * with ESCAPE_STRING_SYNTAX guarantees it is non-standard-conforming.
1252 * Beware of multiple evaluation of the "ch" argument!
1253 */
1254#define SQL_STR_DOUBLE(ch, escape_backslash) \
1255 ((ch) == '\'' || ((ch) == '\\' && (escape_backslash)))
1256
1257#define ESCAPE_STRING_SYNTAX 'E'
1258
1259
1260#define STATUS_OK (0)
1261#define STATUS_ERROR (-1)
1262#define STATUS_EOF (-2)
1263
1264/*
1265 * gettext support
1266 */
1267
1268#ifndef ENABLE_NLS
1269/* stuff we'd otherwise get from <libintl.h> */
1270#define gettext(x) (x)
1271#define dgettext(d,x) (x)
1272#define ngettext(s,p,n) ((n) == 1 ? (s) : (p))
1273#define dngettext(d,s,p,n) ((n) == 1 ? (s) : (p))
1274#endif
1275
1276#define _(x) gettext(x)
1277
1278/*
1279 * Use this to mark string constants as needing translation at some later
1280 * time, rather than immediately. This is useful for cases where you need
1281 * access to the original string and translated string, and for cases where
1282 * immediate translation is not possible, like when initializing global
1283 * variables.
1284 *
1285 * https://www.gnu.org/software/gettext/manual/html_node/Special-cases.html
1286 */
1287#define gettext_noop(x) (x)
1288
1289/*
1290 * To better support parallel installations of major PostgreSQL
1291 * versions as well as parallel installations of major library soname
1292 * versions, we mangle the gettext domain name by appending those
1293 * version numbers. The coding rule ought to be that wherever the
1294 * domain name is mentioned as a literal, it must be wrapped into
1295 * PG_TEXTDOMAIN(). The macros below do not work on non-literals; but
1296 * that is somewhat intentional because it avoids having to worry
1297 * about multiple states of premangling and postmangling as the values
1298 * are being passed around.
1299 *
1300 * Make sure this matches the installation rules in nls-global.mk.
1301 */
1302#ifdef SO_MAJOR_VERSION
1303#define PG_TEXTDOMAIN(domain) (domain CppAsString2(SO_MAJOR_VERSION) "-" PG_MAJORVERSION)
1304#else
1305#define PG_TEXTDOMAIN(domain) (domain "-" PG_MAJORVERSION)
1306#endif
1307
1308/*
1309 * Macro that allows to cast constness and volatile away from an expression, but doesn't
1310 * allow changing the underlying type. Enforcement of the latter
1311 * currently only works for gcc like compilers.
1312 *
1313 * Please note IT IS NOT SAFE to cast constness away if the result will ever
1314 * be modified (it would be undefined behaviour). Doing so anyway can cause
1315 * compiler misoptimizations or runtime crashes (modifying readonly memory).
1316 * It is only safe to use when the result will not be modified, but API
1317 * design or language restrictions prevent you from declaring that
1318 * (e.g. because a function returns both const and non-const variables).
1319 *
1320 * Note that this only works in function scope, not for global variables (it'd
1321 * be nice, but not trivial, to improve that).
1322 */
1323#if defined(__cplusplus)
1324#define unconstify(underlying_type, expr) const_cast<underlying_type>(expr)
1325#define unvolatize(underlying_type, expr) const_cast<underlying_type>(expr)
1326#else
1327#define unconstify(underlying_type, expr) \
1328 (StaticAssertVariableIsOfTypeMacro(expr, const underlying_type), \
1329 (underlying_type) (expr))
1330#define unvolatize(underlying_type, expr) \
1331 (StaticAssertVariableIsOfTypeMacro(expr, volatile underlying_type), \
1332 (underlying_type) (expr))
1333#endif
1334
1335/*
1336 * SSE2 instructions are part of the spec for the 64-bit x86 ISA. We assume
1337 * that compilers targeting this architecture understand SSE2 intrinsics.
1338 */
1339#if (defined(__x86_64__) || defined(_M_AMD64))
1340#define USE_SSE2
1341
1342/*
1343 * We use the Neon instructions if the compiler provides access to them (as
1344 * indicated by __ARM_NEON) and we are on aarch64. While Neon support is
1345 * technically optional for aarch64, it appears that all available 64-bit
1346 * hardware does have it. Neon exists in some 32-bit hardware too, but we
1347 * could not realistically use it there without a run-time check, which seems
1348 * not worth the trouble for now.
1349 */
1350#elif defined(__aarch64__) && defined(__ARM_NEON)
1351#define USE_NEON
1352#endif
1353
1354/* ----------------------------------------------------------------
1355 * Section 9: system-specific hacks
1356 *
1357 * This should be limited to things that absolutely have to be
1358 * included in every source file. The port-specific header file
1359 * is usually a better place for this sort of thing.
1360 * ----------------------------------------------------------------
1361 */
1362
1363/*
1364 * NOTE: this is also used for opening text files.
1365 * WIN32 treats Control-Z as EOF in files opened in text mode.
1366 * Therefore, we open files in binary mode on Win32 so we can read
1367 * literal control-Z. The other affect is that we see CRLF, but
1368 * that is OK because we can already handle those cleanly.
1369 */
1370#if defined(WIN32) || defined(__CYGWIN__)
1371#define PG_BINARY O_BINARY
1372#define PG_BINARY_A "ab"
1373#define PG_BINARY_R "rb"
1374#define PG_BINARY_W "wb"
1375#else
1376#define PG_BINARY 0
1377#define PG_BINARY_A "a"
1378#define PG_BINARY_R "r"
1379#define PG_BINARY_W "w"
1380#endif
1381
1382/*
1383 * Provide prototypes for routines not present in a particular machine's
1384 * standard C library.
1385 */
1386
1387#if !HAVE_DECL_FDATASYNC
1388extern int fdatasync(int fd);
1389#endif
1390
1391/*
1392 * Thin wrappers that convert strings to exactly 64-bit integers, matching our
1393 * definition of int64. (For the naming, compare that POSIX has
1394 * strtoimax()/strtoumax() which return intmax_t/uintmax_t.)
1395 */
1396#if SIZEOF_LONG == 8
1397#define strtoi64(str, endptr, base) ((int64) strtol(str, endptr, base))
1398#define strtou64(str, endptr, base) ((uint64) strtoul(str, endptr, base))
1399#elif SIZEOF_LONG_LONG == 8
1400#define strtoi64(str, endptr, base) ((int64) strtoll(str, endptr, base))
1401#define strtou64(str, endptr, base) ((uint64) strtoull(str, endptr, base))
1402#else
1403#error "cannot find integer type of the same size as int64_t"
1404#endif
1405
1406/*
1407 * Similarly, wrappers around labs()/llabs() matching our int64.
1408 */
1409#if SIZEOF_LONG == 8
1410#define i64abs(i) ((int64) labs(i))
1411#elif SIZEOF_LONG_LONG == 8
1412#define i64abs(i) ((int64) llabs(i))
1413#else
1414#error "cannot find integer type of the same size as int64_t"
1415#endif
1416
1417/*
1418 * Use "extern PGDLLIMPORT ..." to declare variables that are defined
1419 * in the core backend and need to be accessible by loadable modules.
1420 * No special marking is required on most ports.
1421 */
1422#ifndef PGDLLIMPORT
1423#define PGDLLIMPORT
1424#endif
1425
1426/*
1427 * Use "extern PGDLLEXPORT ..." to declare functions that are defined in
1428 * loadable modules and need to be callable by the core backend or other
1429 * loadable modules.
1430 * If the compiler knows __attribute__((visibility("*"))), we use that,
1431 * unless we already have a platform-specific definition. Otherwise,
1432 * no special marking is required.
1433 */
1434#ifndef PGDLLEXPORT
1435#ifdef HAVE_VISIBILITY_ATTRIBUTE
1436#define PGDLLEXPORT __attribute__((visibility("default")))
1437#else
1438#define PGDLLEXPORT
1439#endif
1440#endif
1441
1442/*
1443 * Platform independent struct representing additional information about the
1444 * received signal. If the system does not support the extended information,
1445 * or a field does not apply to the signal, the value is instead reset to the
1446 * documented default value.
1447 */
1448
1449typedef struct pg_signal_info
1450{
1451 uint32_t pid; /* pid of sending process or 0 if unknown */
1452 uint32_t uid; /* uid of sending process; only meaningful
1453 * when pid is not 0 */
1454} pg_signal_info;
1455
1456/*
1457 * The following is used as the arg list for signal handlers. These days we
1458 * use the same argument to all signal handlers and hide the difference
1459 * between platforms in wrapper functions.
1460 *
1461 * SIGNAL_ARGS just exists separately from the pqsignal() definition for
1462 * historical reasons.
1463 */
1464#define SIGNAL_ARGS int postgres_signal_arg, const pg_signal_info *pg_siginfo
1465
1466/*
1467 * When there is no sigsetjmp, its functionality is provided by plain
1468 * setjmp. We now support the case only on Windows. However, it seems
1469 * that MinGW-64 has some longstanding issues in its setjmp support,
1470 * so on that toolchain we cheat and use gcc's builtins.
1471 */
1472#ifdef WIN32
1473#ifdef __MINGW64__
1474typedef intptr_t sigjmp_buf[5];
1475#define sigsetjmp(x,y) __builtin_setjmp(x)
1476#define siglongjmp __builtin_longjmp
1477#else /* !__MINGW64__ */
1478#define sigjmp_buf jmp_buf
1479#define sigsetjmp(x,y) setjmp(x)
1480#define siglongjmp longjmp
1481#endif /* __MINGW64__ */
1482#endif /* WIN32 */
1483
1484/* /port compatibility functions */
1485#include "port.h"
1486
1487/*
1488 * char16_t and char32_t
1489 * Unicode code points.
1490 *
1491 * uchar.h should always be available in C11, but it's not available on
1492 * Mac. However, these types are keywords in C++11, so when using C++, we
1493 * can't redefine the types.
1494 *
1495 * XXX: when uchar.h is available everywhere, we can remove this check and
1496 * just include uchar.h unconditionally.
1497 *
1498 * XXX: this section is out of place because uchar.h needs to be included
1499 * after port.h, due to an interaction with win32_port.h in some cases.
1500 */
1501#ifdef HAVE_UCHAR_H
1502#include <uchar.h>
1503#else
1504#ifndef __cplusplus
1505typedef uint16_t char16_t;
1506typedef uint32_t char32_t;
1507#endif
1508#endif
1509
1510/* IWYU pragma: end_exports */
1511
1512#endif /* C_H */
fdatasync
int fdatasync(int fd)
Definition win32fdatasync.c:23
char16_t
uint16_t char16_t
Definition c.h:1503
char32_t
uint32_t char32_t
Definition c.h:1504
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:1204
PGAlignedXLogBlock::data
char data[XLOG_BLCKSZ]
Definition c.h:1231
PGIOAlignedBlock::data
char data[BLCKSZ]
Definition c.h:1225
pg_signal_info
Definition c.h:1448
pg_signal_info::pid
uint32_t pid
Definition c.h:1449
pg_signal_info::uid
uint32_t uid
Definition c.h:1450

◆ BoolIsValid

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

Definition at line 846 of file c.h.

◆ BUFFERALIGN

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

Definition at line 898 of file c.h.

◆ BUFFERALIGN_DOWN

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

Definition at line 909 of file c.h.

◆ CACHELINEALIGN

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

Definition at line 899 of file c.h.

◆ CppAsString

#define CppAsString (   identifier)    #identifier

Definition at line 505 of file c.h.

◆ CppAsString2

#define CppAsString2 (   x)    CppAsString(x)

Definition at line 506 of file c.h.

◆ CppConcat

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

Definition at line 507 of file c.h.

◆ dgettext

#define dgettext (   d,
  x 
)    (x)

Definition at line 1269 of file c.h.

◆ dngettext

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

Definition at line 1271 of file c.h.

◆ DOUBLEALIGN

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

Definition at line 895 of file c.h.

◆ DOUBLEALIGN_DOWN

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

Definition at line 907 of file c.h.

◆ ESCAPE_STRING_SYNTAX

#define ESCAPE_STRING_SYNTAX   'E'

Definition at line 1255 of file c.h.

◆ FirstCommandId

#define FirstCommandId   ((CommandId) 0)

Definition at line 752 of file c.h.

◆ FLEXIBLE_ARRAY_MEMBER

#define FLEXIBLE_ARRAY_MEMBER   /* empty */

Definition at line 558 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 1169 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 1171 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 1173 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 1175 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 1177 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 1179 of file c.h.

◆ FLOAT8PASSBYVAL

#define FLOAT8PASSBYVAL   true

Definition at line 720 of file c.h.

◆ gettext

#define gettext (   x)    (x)

Definition at line 1268 of file c.h.

◆ gettext_noop

#define gettext_noop (   x)    (x)

Definition at line 1285 of file c.h.

◆ HAVE_INT64_TIMESTAMP

#define HAVE_INT64_TIMESTAMP

Definition at line 683 of file c.h.

◆ HIGHBIT

#define HIGHBIT   (0x80)

Definition at line 1243 of file c.h.

◆ INT64_FORMAT

#define INT64_FORMAT   "%" PRId64

Definition at line 634 of file c.h.

◆ INT64ALIGN

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

Definition at line 894 of file c.h.

◆ INT64ALIGN_DOWN

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

Definition at line 906 of file c.h.

◆ INT64CONST

#define INT64CONST (   x)    INT64_C(x)

Definition at line 630 of file c.h.

◆ INTALIGN

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

Definition at line 893 of file c.h.

◆ INTALIGN_DOWN

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

Definition at line 905 of file c.h.

◆ InvalidCommandId

#define InvalidCommandId   (~(CommandId)0)

Definition at line 753 of file c.h.

◆ InvalidOid8

#define InvalidOid8   ((Oid8) 0)

Definition at line 758 of file c.h.

◆ InvalidSubTransactionId

#define InvalidSubTransactionId   ((SubTransactionId) 0)

Definition at line 742 of file c.h.

◆ INVERT_COMPARE_RESULT

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

Definition at line 1193 of file c.h.

◆ IS_HIGHBIT_SET

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

Definition at line 1244 of file c.h.

◆ lengthof

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

Definition at line 873 of file c.h.

◆ likely

#define likely (   x)    ((x) != 0)

Definition at line 437 of file c.h.

◆ Max

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

Definition at line 1085 of file c.h.

◆ MAXALIGN

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

Definition at line 896 of file c.h.

◆ MAXALIGN64

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

Definition at line 921 of file c.h.

◆ MAXALIGN_DOWN

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

Definition at line 908 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:1095
Size
size_t Size
Definition c.h:689
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 1107 of file c.h.

1109 { \
1110 /* must be void* because we don't know if it is size_t aligned yet */ \
1111 void *_vstart = (void *) (start); \
1112 int _val = (val); \
1113 Size _len = (len); \
1114\
1115 if ((((uintptr_t) _vstart) & SIZE_T_ALIGN_MASK) == 0 && \
1116 (_len & SIZE_T_ALIGN_MASK) == 0 && \
1117 _val == 0 && \
1118 _len <= MEMSET_LOOP_LIMIT && \
1119 /* \
1120 * If MEMSET_LOOP_LIMIT == 0, optimizer should find \
1121 * the whole "if" false at compile time. \
1122 */ \
1123 MEMSET_LOOP_LIMIT != 0) \
1124 { \
1125 size_t *_start = (size_t *) _vstart; \
1126 size_t *_stop = (size_t *) ((char *) _start + _len); \
1127 while (_start < _stop) \
1128 *_start++ = 0; \
1129 } \

◆ 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 1137 of file c.h.

1142 { \
1143 size_t *_start = (size_t *) (start); \
1144 int _val = (val); \
1145 Size _len = (len); \
1146\
1147 if ((_len & SIZE_T_ALIGN_MASK) == 0 && \
1148 _val == 0 && \
1149 _len <= MEMSET_LOOP_LIMIT && \
1150 MEMSET_LOOP_LIMIT != 0) \
1151 { \
1152 size_t *_stop = (size_t *) ((char *) _start + _len); \
1153 while (_start < _stop) \
1154 *_start++ = 0; \
1155 } \

◆ Min

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

Definition at line 1091 of file c.h.

◆ NameStr

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

Definition at line 835 of file c.h.

◆ ngettext

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

Definition at line 1270 of file c.h.

◆ OffsetToPointer

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

Definition at line 855 of file c.h.

◆ OID8_FORMAT

#define OID8_FORMAT   "%" PRIu64

Definition at line 636 of file c.h.

◆ OID8_MAX

#define OID8_MAX   UINT64_MAX

Definition at line 759 of file c.h.

◆ Oid8IsValid

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

Definition at line 860 of file c.h.

◆ OidIsValid

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

Definition at line 858 of file c.h.

◆ pg_assume

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

Definition at line 423 of file c.h.

◆ pg_attribute_always_inline

#define pg_attribute_always_inline   inline

Definition at line 305 of file c.h.

◆ pg_attribute_cold

#define pg_attribute_cold

Definition at line 346 of file c.h.

◆ pg_attribute_format_arg

#define pg_attribute_format_arg (   a)

Definition at line 267 of file c.h.

◆ pg_attribute_hot

#define pg_attribute_hot

Definition at line 352 of file c.h.

◆ pg_attribute_no_sanitize_address

#define pg_attribute_no_sanitize_address ( )

Definition at line 203 of file c.h.

◆ pg_attribute_no_sanitize_alignment

#define pg_attribute_no_sanitize_alignment ( )

Definition at line 215 of file c.h.

◆ pg_attribute_nonnull

#define pg_attribute_nonnull (   ...)

Definition at line 226 of file c.h.

◆ pg_attribute_printf

#define pg_attribute_printf (   f,
  a 
)

Definition at line 268 of file c.h.

◆ pg_attribute_target

#define pg_attribute_target (   ...)

Definition at line 238 of file c.h.

◆ pg_attribute_unused

#define pg_attribute_unused ( )

Definition at line 149 of file c.h.

◆ PG_BINARY

#define PG_BINARY   0

Definition at line 1374 of file c.h.

◆ PG_BINARY_A

#define PG_BINARY_A   "a"

Definition at line 1375 of file c.h.

◆ PG_BINARY_R

#define PG_BINARY_R   "r"

Definition at line 1376 of file c.h.

◆ PG_BINARY_W

#define PG_BINARY_W   "w"

Definition at line 1377 of file c.h.

◆ pg_fallthrough

#define pg_fallthrough

Definition at line 161 of file c.h.

◆ PG_INT16_MAX

#define PG_INT16_MAX   INT16_MAX

Definition at line 670 of file c.h.

◆ PG_INT16_MIN

#define PG_INT16_MIN   INT16_MIN

Definition at line 669 of file c.h.

◆ PG_INT32_MAX

#define PG_INT32_MAX   INT32_MAX

Definition at line 673 of file c.h.

◆ PG_INT32_MIN

#define PG_INT32_MIN   INT32_MIN

Definition at line 672 of file c.h.

◆ PG_INT64_MAX

#define PG_INT64_MAX   INT64_MAX

Definition at line 676 of file c.h.

◆ PG_INT64_MIN

#define PG_INT64_MIN   INT64_MIN

Definition at line 675 of file c.h.

◆ PG_INT8_MAX

#define PG_INT8_MAX   INT8_MAX

Definition at line 667 of file c.h.

◆ PG_INT8_MIN

#define PG_INT8_MIN   INT8_MIN

Definition at line 666 of file c.h.

◆ pg_nodiscard

#define pg_nodiscard

Definition at line 173 of file c.h.

◆ pg_noinline

#define pg_noinline

Definition at line 321 of file c.h.

◆ pg_noreturn

#define pg_noreturn   _Noreturn

Definition at line 190 of file c.h.

◆ PG_PRINTF_ATTRIBUTE

#define PG_PRINTF_ATTRIBUTE   PG_C_PRINTF_ATTRIBUTE

Definition at line 257 of file c.h.

◆ PG_TEXTDOMAIN

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

Definition at line 1303 of file c.h.

◆ PG_UINT16_MAX

#define PG_UINT16_MAX   UINT16_MAX

Definition at line 671 of file c.h.

◆ PG_UINT32_MAX

#define PG_UINT32_MAX   UINT32_MAX

Definition at line 674 of file c.h.

◆ PG_UINT64_MAX

#define PG_UINT64_MAX   UINT64_MAX

Definition at line 677 of file c.h.

◆ PG_UINT8_MAX

#define PG_UINT8_MAX   UINT8_MAX

Definition at line 668 of file c.h.

◆ pg_unreachable

#define pg_unreachable ( )    abort()

Definition at line 367 of file c.h.

◆ PG_USED_FOR_ASSERTS_ONLY

#define PG_USED_FOR_ASSERTS_ONLY   pg_attribute_unused()

Definition at line 249 of file c.h.

◆ PGDLLEXPORT

#define PGDLLEXPORT

Definition at line 1436 of file c.h.

◆ PGDLLIMPORT

#define PGDLLIMPORT

Definition at line 1421 of file c.h.

◆ PointerIsAligned

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

Definition at line 852 of file c.h.

◆ RegProcedureIsValid

#define RegProcedureIsValid (   p)    OidIsValid(p)

Definition at line 862 of file c.h.

◆ SHORTALIGN

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

Definition at line 892 of file c.h.

◆ SHORTALIGN_DOWN

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

Definition at line 904 of file c.h.

◆ SIGNAL_ARGS

#define SIGNAL_ARGS   int postgres_signal_arg, const pg_signal_info *pg_siginfo

Definition at line 1462 of file c.h.

◆ SIZE_T_ALIGN_MASK

#define SIZE_T_ALIGN_MASK   (sizeof(size_t) - 1)

Definition at line 1095 of file c.h.

◆ SQL_STR_DOUBLE

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

Definition at line 1252 of file c.h.

◆ StaticAssertDecl

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

Definition at line 1008 of file c.h.

◆ StaticAssertExpr

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

Definition at line 1033 of file c.h.

1034 {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 1015 of file c.h.

1016 { 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:505
StaticAssertDecl
#define StaticAssertDecl(condition, errmessage)
Definition c.h:1008

Definition at line 1068 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:1033

Definition at line 1071 of file c.h.

◆ STATUS_EOF

#define STATUS_EOF   (-2)

Definition at line 1260 of file c.h.

◆ STATUS_ERROR

#define STATUS_ERROR   (-1)

Definition at line 1259 of file c.h.

◆ STATUS_OK

#define STATUS_OK   (0)

Definition at line 1258 of file c.h.

◆ TopSubTransactionId

#define TopSubTransactionId   ((SubTransactionId) 1)

Definition at line 743 of file c.h.

◆ TYPEALIGN

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

Definition at line 889 of file c.h.

◆ TYPEALIGN64

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

Definition at line 917 of file c.h.

◆ TYPEALIGN_DOWN

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

Definition at line 901 of file c.h.

◆ UINT64_FORMAT

#define UINT64_FORMAT   "%" PRIu64

Definition at line 635 of file c.h.

◆ UINT64CONST

#define UINT64CONST (   x)    UINT64_C(x)

Definition at line 631 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:1071

Definition at line 1325 of file c.h.

◆ unlikely

#define unlikely (   x)    ((x) != 0)

Definition at line 438 of file c.h.

◆ unvolatize

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

Definition at line 1328 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:533

Definition at line 523 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 533 of file c.h.

◆ VARHDRSZ

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

Definition at line 781 of file c.h.

Typedef Documentation

◆ BpChar

typedef varlena BpChar

Definition at line 790 of file c.h.

◆ bytea

typedef varlena bytea

Definition at line 788 of file c.h.

◆ char16_t

typedef uint16_t char16_t

Definition at line 1503 of file c.h.

◆ char32_t

typedef uint32_t char32_t

Definition at line 1504 of file c.h.

◆ CommandId

typedef uint32 CommandId

Definition at line 750 of file c.h.

◆ float4

typedef float float4

Definition at line 713 of file c.h.

◆ float8

typedef double float8

Definition at line 714 of file c.h.

◆ Index

typedef unsigned int Index

Definition at line 698 of file c.h.

◆ int16

typedef int16_t int16

Definition at line 619 of file c.h.

◆ int32

typedef int32_t int32

Definition at line 620 of file c.h.

◆ int64

typedef int64_t int64

Definition at line 621 of file c.h.

◆ int8

typedef int8_t int8

Definition at line 618 of file c.h.

◆ LocalTransactionId

typedef uint32 LocalTransactionId

Definition at line 738 of file c.h.

◆ MultiXactId

typedef TransactionId MultiXactId

Definition at line 746 of file c.h.

◆ MultiXactOffset

typedef uint64 MultiXactOffset

Definition at line 748 of file c.h.

◆ Name

typedef NameData* Name

Definition at line 833 of file c.h.

◆ NameData

typedef struct nameData NameData

◆ Offset

typedef signed int Offset

Definition at line 708 of file c.h.

◆ Oid8

typedef uint64 Oid8

Definition at line 756 of file c.h.

◆ pg_funcptr_t

typedef void(* pg_funcptr_t) (void)

Definition at line 548 of file c.h.

◆ pg_signal_info

typedef struct pg_signal_info pg_signal_info

◆ PGAlignedBlock

typedef struct PGAlignedBlock PGAlignedBlock

◆ PGAlignedXLogBlock

typedef struct PGAlignedXLogBlock PGAlignedXLogBlock

◆ PGIOAlignedBlock

typedef struct PGIOAlignedBlock PGIOAlignedBlock

◆ Pointer

typedef void* Pointer

Definition at line 615 of file c.h.

◆ regproc

typedef Oid regproc

Definition at line 733 of file c.h.

◆ RegProcedure

typedef regproc RegProcedure

Definition at line 734 of file c.h.

◆ Size

typedef size_t Size

Definition at line 689 of file c.h.

◆ SubTransactionId

typedef uint32 SubTransactionId

Definition at line 740 of file c.h.

◆ text

typedef varlena text

Definition at line 789 of file c.h.

◆ TransactionId

typedef uint32 TransactionId

Definition at line 736 of file c.h.

◆ uint16

typedef uint16_t uint16

Definition at line 623 of file c.h.

◆ uint32

typedef uint32_t uint32

Definition at line 624 of file c.h.

◆ uint64

typedef uint64_t uint64

Definition at line 625 of file c.h.

◆ uint8

typedef uint8_t uint8

Definition at line 622 of file c.h.

◆ VarChar

typedef varlena VarChar

Definition at line 791 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:873
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().