diff options
author | Mark Wong <mark@2ndQuadrant.com> | 2019-06-13 16:31:03 +0000 |
---|---|---|
committer | Mark Wong <mark@2ndQuadrant.com> | 2019-07-08 12:07:56 -0700 |
commit | dcc632d7c3072730b51b4f0c56fa4129768dab46 (patch) | |
tree | a03272507257a8138f45194ce9d9a26b898c7f4c /c.h | |
parent | bb003808cab5e7bb4836f2bc316045e4181fd63e (diff) |
Remove unused portions of c.h and port.h
Diffstat (limited to 'c.h')
-rw-r--r-- | c.h | 729 |
1 files changed, 0 insertions, 729 deletions
@@ -25,15 +25,7 @@ * * section description * ------- ------------------------------------------------ - * 0) pg_config.h and standard system headers - * 1) hacks to cope with non-ANSI C compilers * 2) bool, true, false, TRUE, FALSE, NULL - * 3) standard system types - * 4) IsValid macros for system types - * 5) offsetof, lengthof, endof, alignment - * 6) widely useful macros - * 7) random stuff - * 8) system-specific hacks * * NOTE: since this file is included by both frontend and backend modules, it's * almost certainly wrong to put an "extern" declaration here. typedefs and @@ -50,45 +42,9 @@ * have its own. The same goes for stddef and stdarg if present. */ -#include "pg_config.h" -#include "pg_config_manual.h" /* must be after pg_config.h */ -#if !defined(WIN32) && !defined(__CYGWIN__) /* win32 will include further - * down */ -#include "pg_config_os.h" /* must be before any system header files */ -#endif -#include "postgres_ext.h" - -#if _MSC_VER >= 1400 -#define errcode __msvc_errcode -#include <crtdefs.h> -#undef errcode -#endif - #include <stdio.h> #include <stdlib.h> #include <string.h> -#include <stddef.h> -#include <stdarg.h> -#ifdef HAVE_STRINGS_H -#include <strings.h> -#endif -#include <sys/types.h> - -#include <errno.h> -#if defined(WIN32) || defined(__CYGWIN__) -#include <fcntl.h> /* ensure O_BINARY is available */ -#endif -#ifdef HAVE_SUPPORTDEFS_H -#include <SupportDefs.h> -#endif - -#if defined(WIN32) || defined(__CYGWIN__) -/* We have to redefine some system functions after they are included above. */ -#include "pg_config_os.h" -#endif - -/* Must be before gettext() games below */ -#include <locale.h> #define _(x) gettext((x)) @@ -98,63 +54,6 @@ #define gettext(x) (x) #endif -/* - * Use this to mark strings to be translated by gettext, in places where - * you don't want an actual function call to occur (eg, constant tables). - */ -#define gettext_noop(x) (x) - - -/* ---------------------------------------------------------------- - * Section 1: hacks to cope with non-ANSI C compilers - * - * type prefixes (const, signed, volatile, inline) are handled in pg_config.h. - * ---------------------------------------------------------------- - */ - -/* - * CppAsString - * Convert the argument to a string, using the C preprocessor. - * CppConcat - * Concatenate two arguments together, using the C preprocessor. - * - * Note: the standard Autoconf macro AC_C_STRINGIZE actually only checks - * whether #identifier works, but if we have that we likely have ## too. - */ -#if defined(HAVE_STRINGIZE) - -#define CppAsString(identifier) #identifier -#define CppConcat(x, y) x##y -#else /* !HAVE_STRINGIZE */ - -#define CppAsString(identifier) "identifier" - -/* - * CppIdentity -- On Reiser based cpp's this is used to concatenate - * two tokens. That is - * CppIdentity(A)B ==> AB - * We renamed it to _private_CppIdentity because it should not - * be referenced outside this file. On other cpp's it - * produces A B. - */ -#define _priv_CppIdentity(x)x -#define CppConcat(x, y) _priv_CppIdentity(x)y -#endif /* !HAVE_STRINGIZE */ - -/* - * dummyret is used to set return values in macros that use ?: to make - * assignments. gcc wants these to be void, other compilers like char - */ -#ifdef __GNUC__ /* GNU cc */ -#define dummyret void -#else -#define dummyret char -#endif - -#ifndef __GNUC__ -#define __attribute__(_arg_) -#endif - /* ---------------------------------------------------------------- * Section 2: bool, true, false, TRUE, FALSE, NULL * ---------------------------------------------------------------- @@ -193,634 +92,6 @@ typedef bool *BoolPtr; #define FALSE 0 #endif -/* - * NULL - * Null pointer. - */ -#ifndef NULL -#define NULL ((void *) 0) -#endif - - -/* ---------------------------------------------------------------- - * Section 3: standard system types - * ---------------------------------------------------------------- - */ - -/* - * Pointer - * Variable holding address of any memory resident object. - * - * XXX Pointer arithmetic is done with this, so it can't be void * - * under "true" ANSI compilers. - */ -typedef char *Pointer; - -/* - * intN - * Signed integer, EXACTLY N BITS IN SIZE, - * used for numerical computations and the - * frontend/backend protocol. - */ -#ifndef HAVE_INT8 -typedef signed char int8; /* == 8 bits */ -typedef signed short int16; /* == 16 bits */ -typedef signed int int32; /* == 32 bits */ -#endif /* not HAVE_INT8 */ - -/* - * uintN - * Unsigned integer, EXACTLY N BITS IN SIZE, - * used for numerical computations and the - * frontend/backend protocol. - */ -#ifndef HAVE_UINT8 -typedef unsigned char uint8; /* == 8 bits */ -typedef unsigned short uint16; /* == 16 bits */ -typedef unsigned int uint32; /* == 32 bits */ -#endif /* not HAVE_UINT8 */ - -/* - * bitsN - * Unit of bitwise operation, AT LEAST N BITS IN SIZE. - */ -typedef uint8 bits8; /* >= 8 bits */ -typedef uint16 bits16; /* >= 16 bits */ -typedef uint32 bits32; /* >= 32 bits */ - -/* - * floatN - * Floating point number, AT LEAST N BITS IN SIZE, - * used for numerical computations. - * - * Since sizeof(floatN) may be > sizeof(char *), always pass - * floatN by reference. - * - * XXX: these typedefs are now deprecated in favor of float4 and float8. - * They will eventually go away. - */ -typedef float float32data; -typedef double float64data; -typedef float *float32; -typedef double *float64; - -/* - * 64-bit integers - */ -#ifdef HAVE_LONG_INT_64 -/* Plain "long int" fits, use it */ - -#ifndef HAVE_INT64 -typedef long int int64; -#endif -#ifndef HAVE_UINT64 -typedef unsigned long int uint64; -#endif -#elif defined(HAVE_LONG_LONG_INT_64) -/* We have working support for "long long int", use that */ - -#ifndef HAVE_INT64 -typedef long long int int64; -#endif -#ifndef HAVE_UINT64 -typedef unsigned long long int uint64; -#endif -#else /* not HAVE_LONG_INT_64 and not - * HAVE_LONG_LONG_INT_64 */ - -/* Won't actually work, but fall back to long int so that code compiles */ -#ifndef HAVE_INT64 -typedef long int int64; -#endif -#ifndef HAVE_UINT64 -typedef unsigned long int uint64; -#endif - -#define INT64_IS_BUSTED -#endif /* not HAVE_LONG_INT_64 and not - * HAVE_LONG_LONG_INT_64 */ - -/* Decide if we need to decorate 64-bit constants */ -#ifdef HAVE_LL_CONSTANTS -#define INT64CONST(x) ((int64) x##LL) -#define UINT64CONST(x) ((uint64) x##ULL) -#else -#define INT64CONST(x) ((int64) x) -#define UINT64CONST(x) ((uint64) x) -#endif - - -/* Select timestamp representation (float8 or int64) */ -#if defined(USE_INTEGER_DATETIMES) && !defined(INT64_IS_BUSTED) -#define HAVE_INT64_TIMESTAMP -#endif - -/* sig_atomic_t is required by ANSI C, but may be missing on old platforms */ -#ifndef HAVE_SIG_ATOMIC_T -typedef int sig_atomic_t; -#endif - -/* - * Size - * Size of any memory resident object, as returned by sizeof. - */ -typedef size_t Size; - -/* - * Index - * Index into any memory resident array. - * - * Note: - * Indices are non negative. - */ -typedef unsigned int Index; - -/* - * Offset - * Offset into any memory resident array. - * - * Note: - * This differs from an Index in that an Index is always - * non negative, whereas Offset may be negative. - */ -typedef signed int Offset; - -/* - * Common Postgres datatype names (as used in the catalogs) - */ -typedef int16 int2; -typedef int32 int4; -typedef float float4; -typedef double float8; - -/* - * Oid, RegProcedure, TransactionId, SubTransactionId, MultiXactId, - * CommandId - */ - -/* typedef Oid is in postgres_ext.h */ - -/* - * regproc is the type name used in the include/catalog headers, but - * RegProcedure is the preferred name in C code. - */ -typedef Oid regproc; -typedef regproc RegProcedure; - -typedef uint32 TransactionId; - -typedef uint32 SubTransactionId; - -#define InvalidSubTransactionId ((SubTransactionId) 0) -#define TopSubTransactionId ((SubTransactionId) 1) - -/* MultiXactId must be equivalent to TransactionId, to fit in t_xmax */ -typedef TransactionId MultiXactId; - -typedef uint32 MultiXactOffset; - -typedef uint32 CommandId; - -#define FirstCommandId ((CommandId) 0) - -/* - * Array indexing support - */ -#define MAXDIM 6 -typedef struct -{ - int indx[MAXDIM]; -} IntArray; - -/* ---------------- - * Variable-length datatypes all share the 'struct varlena' header. - * - * NOTE: for TOASTable types, this is an oversimplification, since the value - * may be compressed or moved out-of-line. However datatype-specific routines - * are mostly content to deal with de-TOASTed values only, and of course - * client-side routines should never see a TOASTed value. See postgres.h for - * details of the TOASTed form. - * ---------------- - */ -struct varlena -{ - int32 vl_len; - char vl_dat[1]; -}; - -#define VARHDRSZ ((int32) sizeof(int32)) - -/* - * These widely-used datatypes are just a varlena header and the data bytes. - * There is no terminating null or anything like that --- the data length is - * always VARSIZE(ptr) - VARHDRSZ. - */ -typedef struct varlena bytea; -typedef struct varlena text; -typedef struct varlena BpChar; /* blank-padded char, ie SQL char(n) */ -typedef struct varlena VarChar; /* var-length char, ie SQL varchar(n) */ - -/* - * Specialized array types. These are physically laid out just the same - * as regular arrays (so that the regular array subscripting code works - * with them). They exist as distinct types mostly for historical reasons: - * they have nonstandard I/O behavior which we don't want to change for fear - * of breaking applications that look at the system catalogs. There is also - * an implementation issue for oidvector: it's part of the primary key for - * pg_proc, and we can't use the normal btree array support routines for that - * without circularity. - */ -typedef struct -{ - int32 size; /* these fields must match ArrayType! */ - int ndim; /* always 1 for int2vector */ - int32 dataoffset; /* always 0 for int2vector */ - Oid elemtype; - int dim1; - int lbound1; - int2 values[1]; /* VARIABLE LENGTH ARRAY */ -} int2vector; /* VARIABLE LENGTH STRUCT */ - -typedef struct -{ - int32 size; /* these fields must match ArrayType! */ - int ndim; /* always 1 for oidvector */ - int32 dataoffset; /* always 0 for oidvector */ - Oid elemtype; - int dim1; - int lbound1; - Oid values[1]; /* VARIABLE LENGTH ARRAY */ -} oidvector; /* VARIABLE LENGTH STRUCT */ - -/* - * We want NameData to have length NAMEDATALEN and int alignment, - * because that's how the data type 'name' is defined in pg_type. - * Use a union to make sure the compiler agrees. Note that NAMEDATALEN - * must be a multiple of sizeof(int), else sizeof(NameData) will probably - * not come out equal to NAMEDATALEN. - */ -typedef union nameData -{ - char data[NAMEDATALEN]; - int alignmentDummy; -} NameData; -typedef NameData *Name; - -#define NameStr(name) ((name).data) - -/* - * Support macros for escaping strings. escape_backslash should be TRUE - * if generating a non-standard-conforming string. Prefixing a string - * with ESCAPE_STRING_SYNTAX guarantees it is non-standard-conforming. - * Beware of multiple evaluation of the "ch" argument! - */ -#define SQL_STR_DOUBLE(ch, escape_backslash) \ - ((ch) == '\'' || ((ch) == '\\' && (escape_backslash))) - -#define ESCAPE_STRING_SYNTAX 'E' - -/* ---------------------------------------------------------------- - * Section 4: IsValid macros for system types - * ---------------------------------------------------------------- - */ -/* - * BoolIsValid - * True iff bool is valid. - */ -#define BoolIsValid(boolean) ((boolean) == false || (boolean) == true) - -/* - * PointerIsValid - * True iff pointer is valid. - */ -#define PointerIsValid(pointer) ((void*)(pointer) != NULL) - -/* - * PointerIsAligned - * True iff pointer is properly aligned to point to the given type. - */ -#define PointerIsAligned(pointer, type) \ - (((long)(pointer) % (sizeof (type))) == 0) - -#define OidIsValid(objectId) ((bool) ((objectId) != InvalidOid)) - -#define RegProcedureIsValid(p) OidIsValid(p) - - -/* ---------------------------------------------------------------- - * Section 5: offsetof, lengthof, endof, alignment - * ---------------------------------------------------------------- - */ -/* - * offsetof - * Offset of a structure/union field within that structure/union. - * - * XXX This is supposed to be part of stddef.h, but isn't on - * some systems (like SunOS 4). - */ -#ifndef offsetof -#define offsetof(type, field) ((long) &((type *)0)->field) -#endif /* offsetof */ - -/* - * lengthof - * Number of elements in an array. - */ -#define lengthof(array) (sizeof (array) / sizeof ((array)[0])) - -/* - * endof - * Address of the element one past the last in an array. - */ -#define endof(array) (&(array)[lengthof(array)]) - -/* ---------------- - * Alignment macros: align a length or address appropriately for a given type. - * - * There used to be some incredibly crufty platform-dependent hackery here, - * but now we rely on the configure script to get the info for us. Much nicer. - * - * NOTE: TYPEALIGN will not work if ALIGNVAL is not a power of 2. - * That case seems extremely unlikely to occur in practice, however. - * ---------------- - */ - -#define TYPEALIGN(ALIGNVAL,LEN) \ - (((long) (LEN) + ((ALIGNVAL) - 1)) & ~((long) ((ALIGNVAL) - 1))) - -#define SHORTALIGN(LEN) TYPEALIGN(ALIGNOF_SHORT, (LEN)) -#define INTALIGN(LEN) TYPEALIGN(ALIGNOF_INT, (LEN)) -#define LONGALIGN(LEN) TYPEALIGN(ALIGNOF_LONG, (LEN)) -#define DOUBLEALIGN(LEN) TYPEALIGN(ALIGNOF_DOUBLE, (LEN)) -#define MAXALIGN(LEN) TYPEALIGN(MAXIMUM_ALIGNOF, (LEN)) -/* MAXALIGN covers only built-in types, not buffers */ -#define BUFFERALIGN(LEN) TYPEALIGN(ALIGNOF_BUFFER, (LEN)) - - -/* ---------------------------------------------------------------- - * Section 6: widely useful macros - * ---------------------------------------------------------------- - */ -/* - * Max - * Return the maximum of two numbers. - */ -#define Max(x, y) ((x) > (y) ? (x) : (y)) - -/* - * Min - * Return the minimum of two numbers. - */ -#define Min(x, y) ((x) < (y) ? (x) : (y)) - -/* - * Abs - * Return the absolute value of the argument. - */ -#define Abs(x) ((x) >= 0 ? (x) : -(x)) - -/* - * StrNCpy - * Like standard library function strncpy(), except that result string - * is guaranteed to be null-terminated --- that is, at most N-1 bytes - * of the source string will be kept. - * Also, the macro returns no result (too hard to do that without - * evaluating the arguments multiple times, which seems worse). - * - * BTW: when you need to copy a non-null-terminated string (like a text - * datum) and add a null, do not do it with StrNCpy(..., len+1). That - * might seem to work, but it fetches one byte more than there is in the - * text object. One fine day you'll have a SIGSEGV because there isn't - * another byte before the end of memory. Don't laugh, we've had real - * live bug reports from real live users over exactly this mistake. - * Do it honestly with "memcpy(dst,src,len); dst[len] = '\0';", instead. - */ -#define StrNCpy(dst,src,len) \ - do \ - { \ - char * _dst = (dst); \ - Size _len = (len); \ -\ - if (_len > 0) \ - { \ - strncpy(_dst, (src), _len); \ - _dst[_len-1] = '\0'; \ - } \ - } while (0) - - -/* Get a bit mask of the bits set in non-long aligned addresses */ -#define LONG_ALIGN_MASK (sizeof(long) - 1) - -/* - * MemSet - * Exactly the same as standard library function memset(), but considerably - * faster for zeroing small word-aligned structures (such as parsetree nodes). - * This has to be a macro because the main point is to avoid function-call - * overhead. However, we have also found that the loop is faster than - * native libc memset() on some platforms, even those with assembler - * memset() functions. More research needs to be done, perhaps with - * MEMSET_LOOP_LIMIT tests in configure. - */ -#define MemSet(start, val, len) \ - do \ - { \ - /* must be void* because we don't know if it is integer aligned yet */ \ - void *_vstart = (void *) (start); \ - int _val = (val); \ - Size _len = (len); \ -\ - if ((((long) _vstart) & LONG_ALIGN_MASK) == 0 && \ - (_len & LONG_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) \ - { \ - long *_start = (long *) _vstart; \ - long *_stop = (long *) ((char *) _start + _len); \ - while (_start < _stop) \ - *_start++ = 0; \ - } \ - else \ - memset(_vstart, _val, _len); \ - } while (0) - -/* - * MemSetAligned is the same as MemSet except it omits the test to see if - * "start" is word-aligned. This is okay to use if the caller knows a-priori - * that the pointer is suitably aligned (typically, because he just got it - * from palloc(), which always delivers a max-aligned pointer). - */ -#define MemSetAligned(start, val, len) \ - do \ - { \ - long *_start = (long *) (start); \ - int _val = (val); \ - Size _len = (len); \ -\ - if ((_len & LONG_ALIGN_MASK) == 0 && \ - _val == 0 && \ - _len <= MEMSET_LOOP_LIMIT && \ - MEMSET_LOOP_LIMIT != 0) \ - { \ - long *_stop = (long *) ((char *) _start + _len); \ - while (_start < _stop) \ - *_start++ = 0; \ - } \ - else \ - memset(_start, _val, _len); \ - } while (0) - - -/* - * MemSetTest/MemSetLoop are a variant version that allow all the tests in - * MemSet to be done at compile time in cases where "val" and "len" are - * constants *and* we know the "start" pointer must be word-aligned. - * If MemSetTest succeeds, then it is okay to use MemSetLoop, otherwise use - * MemSetAligned. Beware of multiple evaluations of the arguments when using - * this approach. - */ -#define MemSetTest(val, len) \ - ( ((len) & LONG_ALIGN_MASK) == 0 && \ - (len) <= MEMSET_LOOP_LIMIT && \ - MEMSET_LOOP_LIMIT != 0 && \ - (val) == 0 ) - -#define MemSetLoop(start, val, len) \ - do \ - { \ - long * _start = (long *) (start); \ - long * _stop = (long *) ((char *) _start + (Size) (len)); \ - \ - while (_start < _stop) \ - *_start++ = 0; \ - } while (0) - - -/* ---------------------------------------------------------------- - * Section 7: random stuff - * ---------------------------------------------------------------- - */ - -/* msb for char */ -#define HIGHBIT (0x80) -#define IS_HIGHBIT_SET(ch) ((unsigned char)(ch) & HIGHBIT) - -#define STATUS_OK (0) -#define STATUS_ERROR (-1) -#define STATUS_EOF (-2) -#define STATUS_FOUND (1) -#define STATUS_WAITING (2) - - -/* ---------------------------------------------------------------- - * Section 8: system-specific hacks - * - * This should be limited to things that absolutely have to be - * included in every source file. The port-specific header file - * is usually a better place for this sort of thing. - * ---------------------------------------------------------------- - */ - -/* - * NOTE: this is also used for opening text files. - * WIN32 treats Control-Z as EOF in files opened in text mode. - * Therefore, we open files in binary mode on Win32 so we can read - * literal control-Z. The other affect is that we see CRLF, but - * that is OK because we can already handle those cleanly. - */ -#if defined(WIN32) || defined(__CYGWIN__) -#define PG_BINARY O_BINARY -#define PG_BINARY_R "rb" -#define PG_BINARY_W "wb" -#else -#define PG_BINARY 0 -#define PG_BINARY_R "r" -#define PG_BINARY_W "w" -#endif - -#if defined(sun) && defined(__sparc__) && !defined(__SVR4) -#include <unistd.h> -#endif - -/* These are for things that are one way on Unix and another on NT */ -#define NULL_DEV "/dev/null" - -/* - * Provide prototypes for routines not present in a particular machine's - * standard C library. - */ - -#if !HAVE_DECL_SNPRINTF -extern int -snprintf(char *str, size_t count, const char *fmt,...) -/* This extension allows gcc to check the format string */ -__attribute__((format(printf, 3, 4))); -#endif - -#if !HAVE_DECL_VSNPRINTF -extern int vsnprintf(char *str, size_t count, const char *fmt, va_list args); -#endif - -#if !defined(HAVE_MEMMOVE) && !defined(memmove) -#define memmove(d, s, c) bcopy(s, d, c) -#endif - -#ifndef DLLIMPORT -#define DLLIMPORT /* no special DLL markers on most ports */ -#endif - -/* - * The following is used as the arg list for signal handlers. Any ports - * that take something other than an int argument should override this in - * their pg_config_os.h file. Note that variable names are required - * because it is used in both the prototypes as well as the definitions. - * Note also the long name. We expect that this won't collide with - * other names causing compiler warnings. - */ - -#ifndef SIGNAL_ARGS -#define SIGNAL_ARGS int postgres_signal_arg -#endif - -/* - * When there is no sigsetjmp, its functionality is provided by plain - * setjmp. Incidentally, nothing provides setjmp's functionality in - * that case. - */ -#ifndef HAVE_SIGSETJMP -#define sigjmp_buf jmp_buf -#define sigsetjmp(x,y) setjmp(x) -#define siglongjmp longjmp -#endif - -#if defined(HAVE_FDATASYNC) && !HAVE_DECL_FDATASYNC -extern int fdatasync(int fildes); -#endif - -/* If strtoq() exists, rename it to the more standard strtoll() */ -#if defined(HAVE_LONG_LONG_INT_64) && !defined(HAVE_STRTOLL) && defined(HAVE_STRTOQ) -#define strtoll strtoq -#define HAVE_STRTOLL 1 -#endif - -/* If strtouq() exists, rename it to the more standard strtoull() */ -#if defined(HAVE_LONG_LONG_INT_64) && !defined(HAVE_STRTOULL) && defined(HAVE_STRTOUQ) -#define strtoull strtouq -#define HAVE_STRTOULL 1 -#endif - -/* EXEC_BACKEND defines */ -#ifdef EXEC_BACKEND -#define NON_EXEC_STATIC -#else -#define NON_EXEC_STATIC static -#endif - /* /port compatibility functions */ #include "port.h" |