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; either version 2 of the License, or
   (at your option) any later version.

   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

#ifndef EMBEDDED_LIBRARY
#define HAVE_REPLICATION
#define HAVE_EXTERNAL_CLIENT
#endif

#if defined( __EMX__) && !defined( MYSQL_SERVER)
/* moved here to use below VOID macro redefinition */
#define INCL_BASE
#define INCL_NOPMAPI
#include <os2.h>
#endif /* __EMX__ */

#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__ */

/* 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(OS2)
#include <config-os2.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... */

/* Some defines to avoid ifdefs in the code */
#ifndef NETWARE_YIELD
#define NETWARE_YIELD
#define NETWARE_SET_SCREEN_MODE(A)
#endif

/*
  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)


/* Fix problem with S_ISLNK() on Linux */
#if defined(TARGET_OS_LINUX)
#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(UNDEF_THREADS_HACK)
#undef THREAD
#undef HAVE_mit_thread
#undef HAVE_LINUXTHREADS
#undef HAVE_NPTL
#undef HAVE_UNIXWARE7_THREADS
#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__) && !defined(OS2)
#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
#ifndef HAVE_mit_thread
#ifdef HAVE_UNIXWARE7_THREADS
#include <thread.h>
#else
#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
#endif /* HAVE_UNIXWARE7_THREADS */
#endif /* HAVE_mit_thread */
#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 [e-mail] */
#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_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
#ifdef HAVE_ATOMIC_ADD
#define new my_arg_new
#define need_to_restore_new 1
C_MODE_START
#include <asm/atomic.h>
C_MODE_END
#ifdef need_to_restore_new /* probably safer than #ifdef new */
#undef new
#undef need_to_restore_new
#endif
#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>

/* Go around some bugs in different OS and compilers */
#if defined(_HPUX_SOURCE) && defined(HAVE_SYS_STREAM_H)
#include <sys/stream.h>		/* HPUX 10.20 defines ulong here. UGLY !!! */
#define HAVE_ULONG
#endif
#ifdef DONT_USE_FINITE		/* HPUX 11.x has is_finite() */
#undef HAVE_FINITE
#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 */
#ifndef OS2
#define USE_BMOVE512 1		/* Use this unless system bmove is faster */
#endif

#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

/* 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(__EMX__) || !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) { register 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))