forked from twitter-forks/mysql
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my_global.h
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/
my_global.h
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/* Copyright (C) 2000-2003 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/* This is the include file that should be included 'first' in every C file. */
#ifndef _global_h
#define _global_h
/*
InnoDB depends on some MySQL internals which other plugins should not
need. This is because of InnoDB's foreign key support, "safe" binlog
truncation, and other similar legacy features.
We define accessors for these internals unconditionally, but do not
expose them in mysql/plugin.h. They are declared in ha_innodb.h for
InnoDB's use.
*/
#define INNODB_COMPATIBILITY_HOOKS
#ifdef __CYGWIN__
/* We use a Unix API, so pretend it's not Windows */
#undef WIN
#undef WIN32
#undef _WIN
#undef _WIN32
#undef _WIN64
#undef __WIN__
#undef __WIN32__
#define HAVE_ERRNO_AS_DEFINE
#endif /* __CYGWIN__ */
#if defined(__QNXNTO__) && !defined(FD_SETSIZE)
#define FD_SETSIZE 1024 /* Max number of file descriptor bits in
fd_set, used when calling 'select'
Must be defined before including
"sys/select.h" and "sys/time.h"
*/
#endif
/* to make command line shorter we'll define USE_PRAGMA_INTERFACE here */
#ifdef USE_PRAGMA_IMPLEMENTATION
#define USE_PRAGMA_INTERFACE
#endif
#if defined(i386) && !defined(__i386__)
#define __i386__
#endif
/* Macros to make switching between C and C++ mode easier */
#ifdef __cplusplus
#define C_MODE_START extern "C" {
#define C_MODE_END }
#else
#define C_MODE_START
#define C_MODE_END
#endif
#if defined(_WIN32) || defined(_WIN64) || defined(__WIN32__) || defined(WIN32)
#include <config-win.h>
#elif defined(__NETWARE__)
#include <my_config.h>
#include <config-netware.h>
#if defined(__cplusplus) && defined(inline)
#undef inline /* fix configure problem */
#endif
#else
#include <my_config.h>
#if defined(__cplusplus) && defined(inline)
#undef inline /* fix configure problem */
#endif
#endif /* _WIN32... */
/* Make it easier to add conditionl code for windows */
#ifdef __WIN__
#define IF_WIN(A,B) (A)
#else
#define IF_WIN(A,B) (B)
#endif
#ifndef EMBEDDED_LIBRARY
#ifdef WITH_NDB_BINLOG
#define HAVE_NDB_BINLOG 1
#endif
#endif /* !EMBEDDED_LIBRARY */
#ifndef EMBEDDED_LIBRARY
#define HAVE_REPLICATION
#define HAVE_EXTERNAL_CLIENT
#endif
/* Some defines to avoid ifdefs in the code */
#ifndef NETWARE_YIELD
#define NETWARE_YIELD
#define NETWARE_SET_SCREEN_MODE(A)
#endif
/* Workaround for _LARGE_FILES and _LARGE_FILE_API incompatibility on AIX */
#if defined(_AIX) && defined(_LARGE_FILE_API)
#undef _LARGE_FILE_API
#endif
/*
The macros below are used to allow build of Universal/fat binaries of
MySQL and MySQL applications under darwin.
*/
#if defined(__APPLE__) && defined(__MACH__)
# undef SIZEOF_CHARP
# undef SIZEOF_SHORT
# undef SIZEOF_INT
# undef SIZEOF_LONG
# undef SIZEOF_LONG_LONG
# undef SIZEOF_OFF_T
# undef WORDS_BIGENDIAN
# define SIZEOF_SHORT 2
# define SIZEOF_INT 4
# define SIZEOF_LONG_LONG 8
# define SIZEOF_OFF_T 8
# if defined(__i386__) || defined(__ppc__)
# define SIZEOF_CHARP 4
# define SIZEOF_LONG 4
# elif defined(__x86_64__) || defined(__ppc64__)
# define SIZEOF_CHARP 8
# define SIZEOF_LONG 8
# else
# error Building FAT binary for an unknown architecture.
# endif
# if defined(__ppc__) || defined(__ppc64__)
# define WORDS_BIGENDIAN
# endif
#endif /* defined(__APPLE__) && defined(__MACH__) */
/*
The macros below are borrowed from include/linux/compiler.h in the
Linux kernel. Use them to indicate the likelyhood of the truthfulness
of a condition. This serves two purposes - newer versions of gcc will be
able to optimize for branch predication, which could yield siginficant
performance gains in frequently executed sections of the code, and the
other reason to use them is for documentation
*/
#if !defined(__GNUC__) || (__GNUC__ == 2 && __GNUC_MINOR__ < 96)
#define __builtin_expect(x, expected_value) (x)
#endif
#define likely(x) __builtin_expect((x),1)
#define unlikely(x) __builtin_expect((x),0)
/*
The macros below are useful in optimising places where it has been
discovered that cache misses stall the process and where a prefetch
of the cache line can improve matters. This is available in GCC 3.1.1
and later versions.
PREFETCH_READ says that addr is going to be used for reading and that
it is to be kept in caches if possible for a while
PREFETCH_WRITE also says that the item to be cached is likely to be
updated.
The *LOCALITY scripts are also available for experimentation purposes
mostly and should only be used if they are verified to improve matters.
For more input see GCC manual (available in GCC 3.1.1 and later)
*/
#if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR > 10)
#define PREFETCH_READ(addr) __builtin_prefetch(addr, 0, 3)
#define PREFETCH_WRITE(addr) \
__builtin_prefetch(addr, 1, 3)
#define PREFETCH_READ_LOCALITY(addr, locality) \
__builtin_prefetch(addr, 0, locality)
#define PREFETCH_WRITE_LOCALITY(addr, locality) \
__builtin_prefetch(addr, 1, locality)
#else
#define PREFETCH_READ(addr)
#define PREFETCH_READ_LOCALITY(addr, locality)
#define PREFETCH_WRITE(addr)
#define PREFETCH_WRITE_LOCALITY(addr, locality)
#endif
/*
The following macro is used to ensure that code often used in most
SQL statements and definitely for parts of the SQL processing are
kept in a code segment by itself. This has the advantage that the
risk of common code being overlapping in caches of the CPU is less.
This can be a cause of big performance problems.
Routines should be put in this category with care and when they are
put there one should also strive to make as much of the error handling
as possible (or uncommon code of the routine) to execute in a
separate method to avoid moving to much code to this code segment.
It is very easy to use, simply add HOT_METHOD at the end of the
function declaration.
For more input see GCC manual (available in GCC 2.95 and later)
*/
#if (__GNUC__ > 2) || (__GNUC__ == 2 && __GNUC_MINOR > 94)
#define HOT_METHOD \
__attribute__ ((section ("hot_code_section")))
#else
#define HOT_METHOD
#endif
/*
The following macro is used to ensure that popular global variables
are located next to each other to avoid that they contend for the
same cache lines.
It is very easy to use, simply add HOT_DATA at the end of the declaration
of the variable, the variable must be initialised because of the way
that linker works so a declaration using HOT_DATA should look like:
uint global_hot_data HOT_DATA = 0;
For more input see GCC manual (available in GCC 2.95 and later)
*/
#if (__GNUC__ > 2) || (__GNUC__ == 2 && __GNUC_MINOR > 94)
#define HOT_DATA \
__attribute__ ((section ("hot_data_section")))
#else
#define HOT_DATA
#endif
/*
now let's figure out if inline functions are supported
autoconf defines 'inline' to be empty, if not
*/
#define inline_test_1(X) X ## 1
#define inline_test_2(X) inline_test_1(X)
#if inline_test_2(inline) != 1
#define HAVE_INLINE
#endif
#undef inline_test_2
#undef inline_test_1
/* helper macro for "instantiating" inline functions */
#define STATIC_INLINE static inline
/*
The following macros are used to control inlining a bit more than
usual. These macros are used to ensure that inlining always or
never occurs (independent of compilation mode).
For more input see GCC manual (available in GCC 3.1.1 and later)
*/
#if (__GNUC__ > 3) || (__GNUC__ == 3 && __GNUC_MINOR > 10)
#define ALWAYS_INLINE __attribute__ ((always_inline))
#define NEVER_INLINE __attribute__ ((noinline))
#else
#define ALWAYS_INLINE
#define NEVER_INLINE
#endif
/* Fix problem with S_ISLNK() on Linux */
#if defined(TARGET_OS_LINUX) || defined(__GLIBC__)
#undef _GNU_SOURCE
#define _GNU_SOURCE 1
#endif
/*
Temporary solution to solve bug#7156. Include "sys/types.h" before
the thread headers, else the function madvise() will not be defined
*/
#if defined(HAVE_SYS_TYPES_H) && ( defined(sun) || defined(__sun) )
#include <sys/types.h>
#endif
/* The client defines this to avoid all thread code */
#if defined(MYSQL_CLIENT_NO_THREADS) || defined(UNDEF_THREADS_HACK)
#undef THREAD
#undef HAVE_LINUXTHREADS
#undef HAVE_NPTL
#endif
#ifdef HAVE_THREADS_WITHOUT_SOCKETS
/* MIT pthreads does not work with unix sockets */
#undef HAVE_SYS_UN_H
#endif
#define __EXTENSIONS__ 1 /* We want some extension */
#ifndef __STDC_EXT__
#define __STDC_EXT__ 1 /* To get large file support on hpux */
#endif
/*
Solaris 9 include file <sys/feature_tests.h> refers to X/Open document
System Interfaces and Headers, Issue 5
saying we should define _XOPEN_SOURCE=500 to get POSIX.1c prototypes,
but apparently other systems (namely FreeBSD) don't agree.
On a newer Solaris 10, the above file recognizes also _XOPEN_SOURCE=600.
Furthermore, it tests that if a program requires older standard
(_XOPEN_SOURCE<600 or _POSIX_C_SOURCE<200112L) it cannot be
run on a new compiler (that defines _STDC_C99) and issues an #error.
It's also an #error if a program requires new standard (_XOPEN_SOURCE=600
or _POSIX_C_SOURCE=200112L) and a compiler does not define _STDC_C99.
To add more to this mess, Sun Studio C compiler defines _STDC_C99 while
C++ compiler does not!
So, in a desperate attempt to get correct prototypes for both
C and C++ code, we define either _XOPEN_SOURCE=600 or _XOPEN_SOURCE=500
depending on the compiler's announced C standard support.
Cleaner solutions are welcome.
*/
#ifdef __sun
#if __STDC_VERSION__ - 0 >= 199901L
#define _XOPEN_SOURCE 600
#else
#define _XOPEN_SOURCE 500
#endif
#endif
#if defined(THREAD) && !defined(__WIN__)
#ifndef _POSIX_PTHREAD_SEMANTICS
#define _POSIX_PTHREAD_SEMANTICS /* We want posix threads */
#endif
#if !defined(SCO)
#define _REENTRANT 1 /* Some thread libraries require this */
#endif
#if !defined(_THREAD_SAFE) && !defined(_AIX)
#define _THREAD_SAFE /* Required for OSF1 */
#endif
#if defined(HPUX10) || defined(HPUX11)
C_MODE_START /* HPUX needs this, signal.h bug */
#include <pthread.h>
C_MODE_END
#else
#include <pthread.h> /* AIX must have this included first */
#endif
#if !defined(SCO) && !defined(_REENTRANT)
#define _REENTRANT 1 /* Threads requires reentrant code */
#endif
#endif /* THREAD */
/* Go around some bugs in different OS and compilers */
#ifdef _AIX /* By soren@t.dk */
#define _H_STRINGS
#define _SYS_STREAM_H
/* #define _AIX32_CURSES */ /* XXX: this breaks AIX 4.3.3 (others?). */
#define ulonglong2double(A) my_ulonglong2double(A)
#define my_off_t2double(A) my_ulonglong2double(A)
C_MODE_START
double my_ulonglong2double(unsigned long long A);
C_MODE_END
#endif /* _AIX */
#ifdef HAVE_BROKEN_SNPRINTF /* HPUX 10.20 don't have this defined */
#undef HAVE_SNPRINTF
#endif
#ifdef HAVE_BROKEN_PREAD
/*
pread()/pwrite() are not 64 bit safe on HP-UX 11.0 without
installing the kernel patch PHKL_20349 or greater
*/
#undef HAVE_PREAD
#undef HAVE_PWRITE
#endif
#if defined(HAVE_BROKEN_INLINE) && !defined(__cplusplus)
#undef inline
#define inline
#endif
#ifdef UNDEF_HAVE_GETHOSTBYNAME_R /* For OSF4.x */
#undef HAVE_GETHOSTBYNAME_R
#endif
#ifdef UNDEF_HAVE_INITGROUPS /* For AIX 4.3 */
#undef HAVE_INITGROUPS
#endif
/* gcc/egcs issues */
#if defined(__GNUC) && defined(__EXCEPTIONS)
#error "Please add -fno-exceptions to CXXFLAGS and reconfigure/recompile"
#endif
/* Fix a bug in gcc 2.8.0 on IRIX 6.2 */
#if SIZEOF_LONG == 4 && defined(__LONG_MAX__) && (__GNUC__ == 2 && __GNUC_MINOR__ == 8)
#undef __LONG_MAX__ /* Is a longlong value in gcc 2.8.0 ??? */
#define __LONG_MAX__ 2147483647
#endif
/* egcs 1.1.2 has a problem with memcpy on Alpha */
#if defined(__GNUC__) && defined(__alpha__) && ! (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95))
#define BAD_MEMCPY
#endif
#if defined(_lint) && !defined(lint)
#define lint
#endif
#if SIZEOF_LONG_LONG > 4 && !defined(_LONG_LONG)
#define _LONG_LONG 1 /* For AIX string library */
#endif
#ifndef stdin
#include <stdio.h>
#endif
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STDDEF_H
#include <stddef.h>
#endif
#include <math.h>
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#ifdef HAVE_FLOAT_H
#include <float.h>
#endif
#ifdef HAVE_FENV_H
#include <fenv.h> /* For fesetround() */
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#ifdef HAVE_SYS_TIMEB_H
#include <sys/timeb.h> /* Avoid warnings on SCO */
#endif
#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# if HAVE_SYS_TIME_H
# include <sys/time.h>
# else
# include <time.h>
# endif
#endif /* TIME_WITH_SYS_TIME */
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#if defined(__cplusplus) && defined(NO_CPLUSPLUS_ALLOCA)
#undef HAVE_ALLOCA
#undef HAVE_ALLOCA_H
#endif
#ifdef HAVE_ALLOCA_H
#include <alloca.h>
#endif
#include <errno.h> /* Recommended by debian */
/* We need the following to go around a problem with openssl on solaris */
#if defined(HAVE_CRYPT_H)
#include <crypt.h>
#endif
/*
A lot of our programs uses asserts, so better to always include it
This also fixes a problem when people uses DBUG_ASSERT without including
assert.h
*/
#include <assert.h>
/* an assert that works at compile-time. only for constant expression */
#ifndef __GNUC__
#define compile_time_assert(X) do { } while(0)
#else
#define compile_time_assert(X) \
do \
{ \
char compile_time_assert[(X) ? 1 : -1] \
__attribute__ ((unused)); \
} while(0)
#endif
/* Go around some bugs in different OS and compilers */
#if defined (HPUX11) && defined(_LARGEFILE_SOURCE)
#define _LARGEFILE64_SOURCE
#endif
#if defined(_HPUX_SOURCE) && defined(HAVE_SYS_STREAM_H)
#include <sys/stream.h> /* HPUX 10.20 defines ulong here. UGLY !!! */
#define HAVE_ULONG
#endif
#if defined(HPUX10) && defined(_LARGEFILE64_SOURCE) && defined(THREAD)
/* Fix bug in setrlimit */
#undef setrlimit
#define setrlimit cma_setrlimit64
#endif
/* Declare madvise where it is not declared for C++, like Solaris */
#if HAVE_MADVISE && !HAVE_DECL_MADVISE && defined(__cplusplus)
extern "C" int madvise(void *addr, size_t len, int behav);
#endif
#ifdef __QNXNTO__
/* This has to be after include limits.h */
#define HAVE_ERRNO_AS_DEFINE
#define HAVE_FCNTL_LOCK
#undef HAVE_FINITE
#undef LONGLONG_MIN /* These get wrongly defined in QNX 6.2 */
#undef LONGLONG_MAX /* standard system library 'limits.h' */
#ifdef __cplusplus
#ifndef HAVE_RINT
#define HAVE_RINT
#endif /* rint() and isnan() functions are not */
#define rint(a) std::rint(a) /* visible in C++ scope due to an error */
#define isnan(a) std::isnan(a) /* in the usr/include/math.h on QNX */
#endif
#endif
/* We can not live without the following defines */
#define USE_MYFUNC 1 /* Must use syscall indirection */
#define MASTER 1 /* Compile without unireg */
#define ENGLISH 1 /* Messages in English */
#define POSIX_MISTAKE 1 /* regexp: Fix stupid spec error */
#define USE_REGEX 1 /* We want the use the regex library */
/* Do not define for ultra sparcs */
#define USE_BMOVE512 1 /* Use this unless system bmove is faster */
#define QUOTE_ARG(x) #x /* Quote argument (before cpp) */
#define STRINGIFY_ARG(x) QUOTE_ARG(x) /* Quote argument, after cpp */
/* Paranoid settings. Define I_AM_PARANOID if you are paranoid */
#ifdef I_AM_PARANOID
#define DONT_ALLOW_USER_CHANGE 1
#define DONT_USE_MYSQL_PWD 1
#endif
/* Does the system remember a signal handler after a signal ? */
#ifndef HAVE_BSD_SIGNALS
#define DONT_REMEMBER_SIGNAL
#endif
/* Define void to stop lint from generating "null effekt" comments */
#ifndef DONT_DEFINE_VOID
#ifdef _lint
int __void__;
#define VOID(X) (__void__ = (int) (X))
#else
#undef VOID
#define VOID(X) (X)
#endif
#endif /* DONT_DEFINE_VOID */
#if defined(_lint) || defined(FORCE_INIT_OF_VARS)
#define LINT_INIT(var) var=0 /* No uninitialize-warning */
#else
#define LINT_INIT(var)
#endif
#if defined(_lint) || defined(FORCE_INIT_OF_VARS) || defined(HAVE_purify)
#define PURIFY_OR_LINT_INIT(var) var=0
#else
#define PURIFY_OR_LINT_INIT(var)
#endif
/*
Suppress uninitialized variable warning without generating code.
The _cplusplus is a temporary workaround for C++ code pending a fix
for a g++ bug (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34772).
*/
#if defined(_lint) || defined(FORCE_INIT_OF_VARS) || defined(__cplusplus) || \
!defined(__GNUC__)
#define UNINIT_VAR(x) x= 0
#else
#define UNINIT_VAR(x) x= x
#endif
/* Define some useful general macros */
#if !defined(max)
#define max(a, b) ((a) > (b) ? (a) : (b))
#define min(a, b) ((a) < (b) ? (a) : (b))
#endif
#if !defined(HAVE_UINT)
#undef HAVE_UINT
#define HAVE_UINT
typedef unsigned int uint;
typedef unsigned short ushort;
#endif
#define CMP_NUM(a,b) (((a) < (b)) ? -1 : ((a) == (b)) ? 0 : 1)
#define sgn(a) (((a) < 0) ? -1 : ((a) > 0) ? 1 : 0)
#define swap_variables(t, a, b) { t dummy; dummy= a; a= b; b= dummy; }
#define test(a) ((a) ? 1 : 0)
#define set_if_bigger(a,b) do { if ((a) < (b)) (a)=(b); } while(0)
#define set_if_smaller(a,b) do { if ((a) > (b)) (a)=(b); } while(0)
#define test_all_bits(a,b) (((a) & (b)) == (b))
#define set_bits(type, bit_count) (sizeof(type)*8 <= (bit_count) ? ~(type) 0 : ((((type) 1) << (bit_count)) - (type) 1))
#define array_elements(A) ((uint) (sizeof(A)/sizeof(A[0])))
/* Define some general constants */
#ifndef TRUE
#define TRUE (1) /* Logical true */
#define FALSE (0) /* Logical false */
#endif
#if defined(__GNUC__)
#define function_volatile volatile
#define my_reinterpret_cast(A) reinterpret_cast<A>
#define my_const_cast(A) const_cast<A>
# ifndef GCC_VERSION
# define GCC_VERSION (__GNUC__ * 1000 + __GNUC_MINOR__)
# endif
#elif !defined(my_reinterpret_cast)
#define my_reinterpret_cast(A) (A)
#define my_const_cast(A) (A)
#endif
#include <my_attribute.h>
/*
Wen using the embedded library, users might run into link problems,
duplicate declaration of __cxa_pure_virtual, solved by declaring it a
weak symbol.
*/
#if defined(USE_MYSYS_NEW) && ! defined(DONT_DECLARE_CXA_PURE_VIRTUAL)
C_MODE_START
int __cxa_pure_virtual () __attribute__ ((weak));
C_MODE_END
#endif
/* From old s-system.h */
/*
Support macros for non ansi & other old compilers. Since such
things are no longer supported we do nothing. We keep then since
some of our code may still be needed to upgrade old customers.
*/
#define _VARARGS(X) X
#define _STATIC_VARARGS(X) X
/* The DBUG_ON flag always takes precedence over default DBUG_OFF */
#if defined(DBUG_ON) && defined(DBUG_OFF)
#undef DBUG_OFF
#endif
/* We might be forced to turn debug off, if not turned off already */
#if (defined(FORCE_DBUG_OFF) || defined(_lint)) && !defined(DBUG_OFF)
# define DBUG_OFF
# ifdef DBUG_ON
# undef DBUG_ON
# endif
#endif
#include <my_dbug.h>
#define MIN_ARRAY_SIZE 0 /* Zero or One. Gcc allows zero*/
#define ASCII_BITS_USED 8 /* Bit char used */
#define NEAR_F /* No near function handling */
/* Some types that is different between systems */
typedef int File; /* File descriptor */
#ifndef Socket_defined
typedef int my_socket; /* File descriptor for sockets */
#define INVALID_SOCKET -1
#endif
/* Type for fuctions that handles signals */
#define sig_handler RETSIGTYPE
C_MODE_START
typedef void (*sig_return)();/* Returns type from signal */
C_MODE_END
#if defined(__GNUC__) && !defined(_lint)
typedef char pchar; /* Mixed prototypes can take char */
typedef char puchar; /* Mixed prototypes can take char */
typedef char pbool; /* Mixed prototypes can take char */
typedef short pshort; /* Mixed prototypes can take short int */
typedef float pfloat; /* Mixed prototypes can take float */
#else
typedef int pchar; /* Mixed prototypes can't take char */
typedef uint puchar; /* Mixed prototypes can't take char */
typedef int pbool; /* Mixed prototypes can't take char */
typedef int pshort; /* Mixed prototypes can't take short int */
typedef double pfloat; /* Mixed prototypes can't take float */
#endif
C_MODE_START
typedef int (*qsort_cmp)(const void *,const void *);
typedef int (*qsort_cmp2)(void*, const void *,const void *);
C_MODE_END
#define qsort_t RETQSORTTYPE /* Broken GCC cant handle typedef !!!! */
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
typedef SOCKET_SIZE_TYPE size_socket;
#ifndef SOCKOPT_OPTLEN_TYPE
#define SOCKOPT_OPTLEN_TYPE size_socket
#endif
/* file create flags */
#ifndef O_SHARE /* Probably not windows */
#define O_SHARE 0 /* Flag to my_open for shared files */
#ifndef O_BINARY
#define O_BINARY 0 /* Flag to my_open for binary files */
#endif
#ifndef FILE_BINARY
#define FILE_BINARY O_BINARY /* Flag to my_fopen for binary streams */
#endif
#ifdef HAVE_FCNTL
#define HAVE_FCNTL_LOCK
#define F_TO_EOF 0L /* Param to lockf() to lock rest of file */
#endif
#endif /* O_SHARE */
#ifndef O_TEMPORARY
#define O_TEMPORARY 0
#endif
#ifndef O_SHORT_LIVED
#define O_SHORT_LIVED 0
#endif
#ifndef O_NOFOLLOW
#define O_NOFOLLOW 0
#endif
/* additional file share flags for win32 */
#ifdef __WIN__
#define _SH_DENYRWD 0x110 /* deny read/write mode & delete */
#define _SH_DENYWRD 0x120 /* deny write mode & delete */
#define _SH_DENYRDD 0x130 /* deny read mode & delete */
#define _SH_DENYDEL 0x140 /* deny delete only */
#endif /* __WIN__ */
/* #define USE_RECORD_LOCK */
/* Unsigned types supported by the compiler */
#define UNSINT8 /* unsigned int8 (char) */
#define UNSINT16 /* unsigned int16 */
#define UNSINT32 /* unsigned int32 */
/* General constants */
#define FN_LEN 256 /* Max file name len */
#define FN_HEADLEN 253 /* Max length of filepart of file name */
#define FN_EXTLEN 20 /* Max length of extension (part of FN_LEN) */
#define FN_REFLEN 512 /* Max length of full path-name */
#define FN_EXTCHAR '.'
#define FN_HOMELIB '~' /* ~/ is used as abbrev for home dir */
#define FN_CURLIB '.' /* ./ is used as abbrev for current dir */
#define FN_PARENTDIR ".." /* Parent directory; Must be a string */
#ifndef FN_LIBCHAR
#define FN_LIBCHAR '/'
#define FN_ROOTDIR "/"
#endif
#define MY_NFILE 64 /* This is only used to save filenames */
#ifndef OS_FILE_LIMIT
#define OS_FILE_LIMIT 65535
#endif
/* #define EXT_IN_LIBNAME */
/* #define FN_NO_CASE_SENCE */
/* #define FN_UPPER_CASE TRUE */
/*
Io buffer size; Must be a power of 2 and a multiple of 512. May be
smaller what the disk page size. This influences the speed of the
isam btree library. eg to big to slow.
*/
#define IO_SIZE 4096
/*
How much overhead does malloc have. The code often allocates
something like 1024-MALLOC_OVERHEAD bytes
*/
#ifdef SAFEMALLOC
#define MALLOC_OVERHEAD (8+24+4)
#else
#define MALLOC_OVERHEAD 8
#endif
/* get memory in huncs */
#define ONCE_ALLOC_INIT (uint) (4096-MALLOC_OVERHEAD)
/* Typical record cash */
#define RECORD_CACHE_SIZE (uint) (64*1024-MALLOC_OVERHEAD)
/* Typical key cash */
#define KEY_CACHE_SIZE (uint) (8*1024*1024-MALLOC_OVERHEAD)
/* Default size of a key cache block */
#define KEY_CACHE_BLOCK_SIZE (uint) 1024
/* Some things that this system doesn't have */
#define NO_HASH /* Not needed anymore */
#ifdef __WIN__
#define NO_DIR_LIBRARY /* Not standar dir-library */
#define USE_MY_STAT_STRUCT /* For my_lib */
#endif
/* Some defines of functions for portability */
#undef remove /* Crashes MySQL on SCO 5.0.0 */
#ifndef __WIN__
#define closesocket(A) close(A)
#ifndef ulonglong2double
#define ulonglong2double(A) ((double) (ulonglong) (A))
#define my_off_t2double(A) ((double) (my_off_t) (A))
#endif
#ifndef double2ulonglong
#define double2ulonglong(A) ((ulonglong) (double) (A))
#endif
#endif
#ifndef offsetof
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
#endif
#define ulong_to_double(X) ((double) (ulong) (X))
#define SET_STACK_SIZE(X) /* Not needed on real machines */
#ifndef STACK_DIRECTION
#error "please add -DSTACK_DIRECTION=1 or -1 to your CPPFLAGS"
#endif
#if !defined(HAVE_STRTOK_R)
#define strtok_r(A,B,C) strtok((A),(B))
#endif
/* This is from the old m-machine.h file */
#if SIZEOF_LONG_LONG > 4
#define HAVE_LONG_LONG 1
#endif
/*
Some pre-ANSI-C99 systems like AIX 5.1 and Linux/GCC 2.95 define
ULONGLONG_MAX, LONGLONG_MIN, LONGLONG_MAX; we use them if they're defined.
Also on Windows we define these constants by hand in config-win.h.
*/
#if defined(HAVE_LONG_LONG) && !defined(LONGLONG_MIN)
#define LONGLONG_MIN ((long long) 0x8000000000000000LL)
#define LONGLONG_MAX ((long long) 0x7FFFFFFFFFFFFFFFLL)
#endif
#if defined(HAVE_LONG_LONG) && !defined(ULONGLONG_MAX)
/* First check for ANSI C99 definition: */
#ifdef ULLONG_MAX
#define ULONGLONG_MAX ULLONG_MAX
#else
#define ULONGLONG_MAX ((unsigned long long)(~0ULL))
#endif
#endif /* defined (HAVE_LONG_LONG) && !defined(ULONGLONG_MAX)*/
#define INT_MIN32 (~0x7FFFFFFFL)
#define INT_MAX32 0x7FFFFFFFL
#define UINT_MAX32 0xFFFFFFFFL
#define INT_MIN24 (~0x007FFFFF)
#define INT_MAX24 0x007FFFFF
#define UINT_MAX24 0x00FFFFFF
#define INT_MIN16 (~0x7FFF)
#define INT_MAX16 0x7FFF
#define UINT_MAX16 0xFFFF
#define INT_MIN8 (~0x7F)
#define INT_MAX8 0x7F
#define UINT_MAX8 0xFF
/* From limits.h instead */
#ifndef DBL_MIN
#define DBL_MIN 4.94065645841246544e-324
#define FLT_MIN ((float)1.40129846432481707e-45)
#endif
#ifndef DBL_MAX
#define DBL_MAX 1.79769313486231470e+308
#define FLT_MAX ((float)3.40282346638528860e+38)
#endif
#ifndef SIZE_T_MAX
#define SIZE_T_MAX ~((size_t) 0)
#endif
#ifndef isfinite
#ifdef HAVE_FINITE
#define isfinite(x) finite(x)
#else
#define finite(x) (1.0 / fabs(x) > 0.0)
#endif /* HAVE_FINITE */
#endif /* isfinite */
#ifndef HAVE_ISNAN
#define isnan(x) ((x) != (x))
#endif
#ifdef HAVE_ISINF
/* Check if C compiler is affected by GCC bug #39228 */
#if !defined(__cplusplus) && defined(HAVE_BROKEN_ISINF)
/* Force store/reload of the argument to/from a 64-bit double */
static inline double my_isinf(double x)
{
volatile double t= x;
return isinf(t);
}
#else
/* System-provided isinf() is available and safe to use */
#define my_isinf(X) isinf(X)
#endif
#else /* !HAVE_ISINF */
#define my_isinf(X) (!finite(X) && !isnan(X))
#endif
/* Define missing math constants. */
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#ifndef M_E
#define M_E 2.7182818284590452354
#endif
#ifndef M_LN2
#define M_LN2 0.69314718055994530942
#endif
/*
Max size that must be added to a so that we know Size to make
adressable obj.
*/
#if SIZEOF_CHARP == 4
typedef long my_ptrdiff_t;
#else
typedef long long my_ptrdiff_t;
#endif
#define MY_ALIGN(A,L) (((A) + (L) - 1) & ~((L) - 1))
#define ALIGN_SIZE(A) MY_ALIGN((A),sizeof(double))
/* Size to make adressable obj. */
#define ALIGN_PTR(A, t) ((t*) MY_ALIGN((A),sizeof(t)))
/* Offset of field f in structure t */
#define OFFSET(t, f) ((size_t)(char *)&((t *)0)->f)
#define ADD_TO_PTR(ptr,size,type) (type) ((uchar*) (ptr)+size)
#define PTR_BYTE_DIFF(A,B) (my_ptrdiff_t) ((uchar*) (A) - (uchar*) (B))
#define MY_DIV_UP(A, B) (((A) + (B) - 1) / (B))
#define MY_ALIGNED_BYTE_ARRAY(N, S, T) T N[MY_DIV_UP(S, sizeof(T))]
/*
Custom version of standard offsetof() macro which can be used to get
offsets of members in class for non-POD types (according to the current
version of C++ standard offsetof() macro can't be used in such cases and
attempt to do so causes warnings to be emitted, OTOH in many cases it is
still OK to assume that all instances of the class has the same offsets
for the same members).
This is temporary solution which should be removed once File_parser class
and related routines are refactored.
*/
#define my_offsetof(TYPE, MEMBER) \
((size_t)((char *)&(((TYPE *)0x10)->MEMBER) - (char*)0x10))
#define NullS (char *) 0
/* Nowdays we do not support MessyDos */
#ifndef NEAR
#define NEAR /* Who needs segments ? */
#define FAR /* On a good machine */
#ifndef HUGE_PTR
#define HUGE_PTR
#endif
#endif
#if defined(__IBMC__) || defined(__IBMCPP__)
/* This was _System _Export but caused a lot of warnings on _AIX43 */
#define STDCALL
#elif !defined( STDCALL)
#define STDCALL
#endif
/* Typdefs for easyier portability */
#ifndef HAVE_UCHAR
typedef unsigned char uchar; /* Short for unsigned char */
#endif
#ifndef HAVE_INT8
typedef signed char int8; /* Signed integer >= 8 bits */
#endif
#ifndef HAVE_UINT8
typedef unsigned char uint8; /* Unsigned integer >= 8 bits */
#endif
#ifndef HAVE_INT16
typedef short int16;
#endif
#ifndef HAVE_UINT16
typedef unsigned short uint16;
#endif
#if SIZEOF_INT == 4
#ifndef HAVE_INT32
typedef int int32;
#endif
#ifndef HAVE_UINT32
typedef unsigned int uint32;
#endif
#elif SIZEOF_LONG == 4
#ifndef HAVE_INT32
typedef long int32;