/usr/include/pgpool2/pool_type.h is in libpgpool-dev 3.6.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 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 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 | /* -*-pgsql-c-*- */
/*
*
* $Header$
*
* pgpool: a language independent connection pool server for PostgreSQL
* written by Tatsuo Ishii
*
* Copyright (c) 2003-2015 PgPool Global Development Group
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby
* granted, provided that the above copyright notice appear in all
* copies and that both that copyright notice and this permission
* notice appear in supporting documentation, and that the name of the
* author not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. The author makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* pool_type.h.: type definition header file
*
*/
#ifndef POOL_TYPE_H
#define POOL_TYPE_H
#include "config.h"
#include <sys/types.h>
#include <sys/socket.h>
#include "pcp/libpcp_ext.h"
#include "libpq-fe.h"
/* Define common boolean type. C++ and BEOS already has it so exclude them. */
#ifdef c_plusplus
#ifndef __cplusplus
#define __cplusplus
#endif /* __cplusplus */
#endif /* c_plusplus */
#ifndef __BEOS__
#ifndef __cplusplus
#ifndef bool
typedef char bool;
#endif
#ifndef true
#define true ((bool) 1)
#endif
#ifndef TRUE
#define TRUE ((bool) 1)
#endif
#ifndef false
#define false ((bool) 0)
#endif
#ifndef FALSE
#define FALSE ((bool) 0)
#endif
#endif /* not C++ */
#endif /* __BEOS__ */
#define PointerIsValid(pointer) ((const void*)(pointer) != NULL)
typedef signed char int8; /* == 8 bits */
typedef signed short int16; /* == 16 bits */
typedef signed int int32; /* == 32 bits */
/*
* uintN
* Unsigned integer, EXACTLY N BITS IN SIZE,
* used for numerical computations and the
* frontend/backend protocol.
*/
typedef unsigned char uint8; /* == 8 bits */
typedef unsigned short uint16; /* == 16 bits */
typedef unsigned int uint32; /* == 32 bits */
#ifdef HAVE_LONG_INT_64
/* Plain "long int" fits, use it */
typedef long int int64;
#define pool_atoi64 atol
#elif defined(HAVE_LONG_LONG_INT_64)
/* We have working support for "long long int", use that */
typedef long long int int64;
#define pool_atoi64 atoll
#else
/* neither HAVE_LONG_INT_64 nor HAVE_LONG_LONG_INT_64 */
#error must have a working 64-bit integer datatype
#endif
typedef enum {
LOAD_UNSELECTED = 0,
LOAD_SELECTED
} LOAD_BALANCE_STATUS;
/*
* Backend status record file
*/
typedef struct {
BACKEND_STATUS status[MAX_NUM_BACKENDS];
} BackendStatusRecord;
extern int assert_enabled;
extern void ExceptionalCondition(const char *conditionName,
const char *errorType,
const char *fileName, int lineNumber) __attribute__((noreturn));
#define MAXIMUM_ALIGNOF 8
#define TYPEALIGN(ALIGNVAL,LEN) \
(((intptr_t) (LEN) + ((ALIGNVAL) - 1)) & ~((intptr_t) ((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))
/*
* It seems that sockaddr_storage is now commonly used in place of sockaddr.
* So, define it if it is not define yet, and create new SockAddr structure
* that uses sockaddr_storage.
*/
#ifdef HAVE_STRUCT_SOCKADDR_STORAGE
#ifndef HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY
#ifdef HAVE_STRUCT_SOCKADDR_STORAGE___SS_FAMILY
#define ss_family __ss_family
#else
#error struct sockaddr_storage does not provide an ss_family member
#endif /* HAVE_STRUCT_SOCKADDR_STORAGE___SS_FAMILY */
#endif /* HAVE_STRUCT_SOCKADDR_STORAGE_SS_FAMILY */
#ifdef HAVE_STRUCT_SOCKADDR_STORAGE___SS_LEN
#define ss_len __ss_len
#define HAVE_STRUCT_SOCKADDR_STORAGE_SS_LEN 1
#endif /* HAVE_STRUCT_SOCKADDR_STORAGE___SS_LEN */
#else /* !HAVE_STRUCT_SOCKADDR_STORAGE */
/* Define a struct sockaddr_storage if we don't have one. */
struct sockaddr_storage
{
union
{
struct sockaddr sa; /* get the system-dependent fields */
long int ss_align; /* ensures struct is properly aligned. original uses int64 */
char ss_pad[128]; /* ensures struct has desired size */
}
ss_stuff;
};
#define ss_family ss_stuff.sa.sa_family
/* It should have an ss_len field if sockaddr has sa_len. */
#ifdef HAVE_STRUCT_SOCKADDR_SA_LEN
#define ss_len ss_stuff.sa.sa_len
#define HAVE_STRUCT_SOCKADDR_STORAGE_SS_LEN 1
#endif
#endif /* HAVE_STRUCT_SOCKADDR_STORAGE */
typedef struct
{
struct sockaddr_storage addr;
/* ACCEPT_TYPE_ARG3 - Third argument type of accept().
* It is defined in ac_func_accept_argtypes.m4
*/
ACCEPT_TYPE_ARG3 salen;
}
SockAddr;
/* UserAuth type used for HBA which indicates the authentication method */
typedef enum UserAuth
{
uaReject,
/* uaKrb4, */
/* uaKrb5, */
uaTrust,
/* uaIdent, */
/* uaPassword, */
/* uaCrypt, */
uaMD5
#ifdef USE_PAM
,uaPAM
#endif /* USE_PAM */
}
UserAuth;
#define AUTH_REQ_OK 0 /* User is authenticated */
#define AUTH_REQ_KRB4 1 /* Kerberos V4 */
#define AUTH_REQ_KRB5 2 /* Kerberos V5 */
#define AUTH_REQ_PASSWORD 3 /* Password */
#define AUTH_REQ_CRYPT 4 /* crypt password */
#define AUTH_REQ_MD5 5 /* md5 password */
#define AUTH_REQ_SCM_CREDS 6 /* transfer SCM credentials */
typedef unsigned int AuthRequest;
#ifdef __GNUC__
#define PG_USE_INLINE
#endif
/* no special DLL markers on most ports */
#ifndef PGDLLIMPORT
#define PGDLLIMPORT
#endif
#ifndef PGDLLEXPORT
#define PGDLLEXPORT
#endif
#ifdef PG_USE_INLINE
#define STATIC_IF_INLINE static inline
#else
#define STATIC_IF_INLINE
#endif /* PG_USE_INLINE */
typedef uint8 bits8; /* >= 8 bits */
typedef uint16 bits16; /* >= 16 bits */
typedef uint32 bits32; /* >= 32 bits */
typedef unsigned long long int uint64;
/*
* stdint.h limits aren't guaranteed to be present and aren't guaranteed to
* have compatible types with our fixed width types. So just define our own.
*/
#define PG_INT8_MIN (-0x7F-1)
#define PG_INT8_MAX (0x7F)
#define PG_UINT8_MAX (0xFF)
#define PG_INT16_MIN (-0x7FFF-1)
#define PG_INT16_MAX (0x7FFF)
#define PG_UINT16_MAX (0xFFFF)
#define PG_INT32_MIN (-0x7FFFFFFF-1)
#define PG_INT32_MAX (0x7FFFFFFF)
#define PG_UINT32_MAX (0xFFFFFFFF)
#define PG_INT64_MIN (-INT64CONST(0x7FFFFFFFFFFFFFFF) - 1)
#define PG_INT64_MAX INT64CONST(0x7FFFFFFFFFFFFFFF)
#define PG_UINT64_MAX UINT64CONST(0xFFFFFFFFFFFFFFFF)
typedef size_t Size;
typedef unsigned long Datum; /* XXX sizeof(long) >= sizeof(void *) */
typedef void (*pg_on_exit_callback) (int code, Datum arg);
/*
* NULL
* Null pointer.
*/
#ifndef NULL
#define NULL ((void *) 0)
#endif
/* ----------------------------------------------------------------
* Section 6: assertions
* ----------------------------------------------------------------
*/
/*
* USE_ASSERT_CHECKING, if defined, turns on all the assertions.
* - plai 9/5/90
*
* It should _NOT_ be defined in releases or in benchmark copies
*/
/*
* Assert() can be used in both frontend and backend code. In frontend code it
* just calls the standard assert, if it's available. If use of assertions is
* not configured, it does nothing.
*/
#ifndef USE_ASSERT_CHECKING
#define Assert(condition)
#define AssertMacro(condition) ((void)true)
#define AssertArg(condition)
#define AssertState(condition)
#define Trap(condition, errorType)
#define TrapMacro(condition, errorType) (true)
#elif defined(FRONTEND)
#include <assert.h>
#define Assert(p) assert(p)
#define AssertMacro(p) ((void) assert(p))
#define AssertArg(condition) assert(condition)
#define AssertState(condition) assert(condition)
#else /* USE_ASSERT_CHECKING && !FRONTEND */
/*
* Trap
* Generates an exception if the given condition is true.
*/
#define Trap(condition, errorType) \
do { \
if ((assert_enabled) && (condition)) \
ExceptionalCondition(CppAsString(condition), (errorType), \
__FILE__, __LINE__); \
} while (0)
/*
* TrapMacro is the same as Trap but it's intended for use in macros:
*
* #define foo(x) (AssertMacro(x != 0), bar(x))
*
* Isn't CPP fun?
*/
#define TrapMacro(condition, errorType) \
((bool) ((! assert_enabled) || ! (condition) || \
(ExceptionalCondition(CppAsString(condition), (errorType), \
__FILE__, __LINE__), 0)))
#define Assert(condition) \
Trap(!(condition), "FailedAssertion")
#define AssertMacro(condition) \
((void) TrapMacro(!(condition), "FailedAssertion"))
#define AssertArg(condition) \
Trap(!(condition), "BadArgument")
#define AssertState(condition) \
Trap(!(condition), "BadState")
#endif /* USE_ASSERT_CHECKING && !FRONTEND */
/*
* Macros to support compile-time assertion checks.
*
* If the "condition" (a compile-time-constant expression) evaluates to false,
* throw a compile error using the "errmessage" (a string literal).
*
* gcc 4.6 and up supports _Static_assert(), but there are bizarre syntactic
* placement restrictions. These macros make it safe to use as a statement
* or in an expression, respectively.
*
* Otherwise we fall back on a kluge that assumes the compiler will complain
* about a negative width for a struct bit-field. This will not include a
* helpful error message, but it beats not getting an error at all.
*/
#ifdef HAVE__STATIC_ASSERT
#define StaticAssertStmt(condition, errmessage) \
do { _Static_assert(condition, errmessage); } while(0)
#define StaticAssertExpr(condition, errmessage) \
({ StaticAssertStmt(condition, errmessage); true; })
#else /* !HAVE__STATIC_ASSERT */
#define StaticAssertStmt(condition, errmessage) \
((void) sizeof(struct { int static_assert_failure : (condition) ? 1 : -1; }))
#define StaticAssertExpr(condition, errmessage) \
StaticAssertStmt(condition, errmessage)
#endif /* HAVE__STATIC_ASSERT */
/*
* Compile-time checks that a variable (or expression) has the specified type.
*
* AssertVariableIsOfType() can be used as a statement.
* AssertVariableIsOfTypeMacro() is intended for use in macros, eg
* #define foo(x) (AssertVariableIsOfTypeMacro(x, int), bar(x))
*
* If we don't have __builtin_types_compatible_p, we can still assert that
* the types have the same size. This is far from ideal (especially on 32-bit
* platforms) but it provides at least some coverage.
*/
#ifdef HAVE__BUILTIN_TYPES_COMPATIBLE_P
#define AssertVariableIsOfType(varname, typename) \
StaticAssertStmt(__builtin_types_compatible_p(__typeof__(varname), typename), \
CppAsString(varname) " does not have type " CppAsString(typename))
#define AssertVariableIsOfTypeMacro(varname, typename) \
((void) StaticAssertExpr(__builtin_types_compatible_p(__typeof__(varname), typename), \
CppAsString(varname) " does not have type " CppAsString(typename)))
#else /* !HAVE__BUILTIN_TYPES_COMPATIBLE_P */
#define AssertVariableIsOfType(varname, typename) \
StaticAssertStmt(sizeof(varname) == sizeof(typename), \
CppAsString(varname) " does not have type " CppAsString(typename))
#define AssertVariableIsOfTypeMacro(varname, typename) \
((void) StaticAssertExpr(sizeof(varname) == sizeof(typename), \
CppAsString(varname) " does not have type " CppAsString(typename)))
#endif /* HAVE__BUILTIN_TYPES_COMPATIBLE_P */
/*
* 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)
#define MEMSET_LOOP_LIMIT 1024
/*
* 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 ((((intptr_t) _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)
#endif /* POOL_TYPE_H */
|