~drizzle-trunk/drizzle/development

/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-

 *  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:

 *

 *  Copyright (C) 2008 Sun Microsystems

 *

 *  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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

/* This is the include file that should be included 'first' in every C file. */

#ifndef DRIZZLE_SERVER_GLOBAL_H

#define DRIZZLE_SERVER_GLOBAL_H

#if defined(i386) && !defined(__i386__)

#define __i386__

#endif

#if defined(__sun) && defined(_FILE_OFFSET_BITS)

#undef _FILE_OFFSET_BITS

#endif

#include <config.h>

#if defined(__cplusplus)

# include CSTDINT_H

# include CINTTYPES_H

# include <cstdio>

# include <cstdlib>

# include <cstddef>

# include <cassert>

# include <cerrno>

# include <sstream>

# if defined(HAVE_MEMORY)

#  include <memory>

# endif

# if defined(HAVE_TR1_MEMORY)

#  include <tr1/memory>

# endif

# if defined(HAVE_BOOST_SHARED_PTR_HPP)

#  include <boost/shared_ptr.hpp>

# endif

#else

# include <stdint.h>

# include <inttypes.h>

# include <stdio.h>

# include <stdlib.h>

# include <stddef.h>

# include <errno.h>        /* Recommended by debian */

/*

  A lot of our programs uses asserts, so better to always include it

*/

# include <assert.h>

#endif // __cplusplus

#include <math.h>

#ifndef EOVERFLOW

#define EOVERFLOW 84

#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

#if defined(__cplusplus)

# if !defined(SHARED_PTR_NAMESPACE)

#  error SHARED_PTR_NAMESPACE not defined, configure error!

# endif

# if defined(SHARED_PTR_NAMESPACE)

//We aren't using this yet - don't actually put in code yet.

//using SHARED_PTR_NAMESPACE::shared_ptr;

# endif

#endif /* defined(SHARED_PTR_NAMESPACE) */

/*

  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

#include <pthread.h>    /* AIX must have this included first */

#define _REENTRANT  1  /* Threads requires reentrant code */

#ifdef HAVE_LIMITS_H

#include <limits.h>

#endif

#ifdef HAVE_SYS_TYPES_H

#include <sys/types.h>

#endif

#ifdef HAVE_FCNTL_H

#include <fcntl.h>

#endif

#ifdef HAVE_UNISTD_H

#include <unistd.h>

#endif

#ifdef HAVE_SYS_STAT_H

# include <sys/stat.h>

#endif

/* Declared in int2str() */

extern char _dig_vec_upper[];

extern char _dig_vec_lower[];

#ifdef __cplusplus

template <class T> void set_if_bigger(T &a, const T &b)

{

  if (a < b)

    a=b;

}

template <class T> void set_if_smaller(T &a, const T &b)

{

  if (a > b)

    a=b;

}

#else

#ifdef __GNUC__

#define set_if_bigger(a,b) do {                 \

  const typeof(a) _a = (a);                     \

  const typeof(b) _b = (b);                     \

  (void) (&_a == &_b);                          \

  if ((a) < (b)) (a)=(b);                       \

  } while(0)

#define set_if_smaller(a,b) do {                \

  const typeof(a) _a = (a);                     \

  const typeof(b) _b = (b);                     \

  (void) (&_a == &_b);                          \

  if ((a) > (b)) (a)=(b);                       \

  } while(0)

#else

#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)

#endif

#endif

#define array_elements(A) ((size_t) (sizeof(A)/sizeof(A[0])))

/* Some types that is different between systems */

typedef int  File;    /* File descriptor */

#ifdef HAVE_SYS_SOCKET_H

#include <sys/socket.h>

#endif

#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

/*

  How much overhead does malloc have. The code often allocates

  something like 1024-MALLOC_OVERHEAD bytes

*/

#define MALLOC_OVERHEAD 8

/* get memory in huncs */

#define ONCE_ALLOC_INIT    (uint32_t) (4096-MALLOC_OVERHEAD)

/* Typical record cash */

#define RECORD_CACHE_SIZE  (uint32_t) (64*1024-MALLOC_OVERHEAD)

/* Typical key cash */

#define KEY_CACHE_SIZE    (uint32_t) (8*1024*1024-MALLOC_OVERHEAD)

/* Default size of a key cache block  */

#define KEY_CACHE_BLOCK_SIZE  (uint32_t) 1024

/* Some things that this system doesn't have */

/* Some defines of functions for portability */

#undef remove    /* Crashes MySQL on SCO 5.0.0 */

#ifndef uint64_t2double

#define uint64_t2double(A) ((double) (uint64_t) (A))

#define my_off_t2double(A)  ((double) (my_off_t) (A))

#endif

#ifndef offsetof

#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)

#endif

#define ulong_to_double(X) ((double) (ulong) (X))

#ifndef STACK_DIRECTION

#error "please add -DSTACK_DIRECTION=1 or -1 to your CPPFLAGS"

#endif

#ifdef HAVE_FLOAT_H

#include <float.h>

#else

#if !defined(FLT_MIN)

#define FLT_MIN         ((float)1.40129846432481707e-45)

#endif

#if !defined(FLT_MAX)

#define FLT_MAX         ((float)3.40282346638528860e+38)

#endif

#endif

/* From limits.h instead */

#ifndef DBL_MIN

#define DBL_MIN    4.94065645841246544e-324

#endif

#ifndef DBL_MAX

#define DBL_MAX    1.79769313486231470e+308

#endif

#ifndef SIZE_T_MAX

#define SIZE_T_MAX ~((size_t) 0)

#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.

*/

typedef ptrdiff_t my_ptrdiff_t;

#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) ((unsigned char*) (ptr)+size)

#define PTR_BYTE_DIFF(A,B) (my_ptrdiff_t) ((unsigned char*) (A) - (unsigned char*) (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))]

/* Typdefs for easyier portability */

#if !defined(HAVE_ULONG) && !defined(__USE_MISC)

typedef unsigned long ulong;      /* Short for unsigned long */

#endif

typedef uint64_t my_off_t;

#if defined(SIZEOF_OFF_T)

# if (SIZEOF_OFF_T == 8)

#  define OFF_T_MAX (INT64_MAX)

# else

#  define OFF_T_MAX (INT32_MAX)

# endif

#endif

#define MY_FILEPOS_ERROR  -1

/* Defines for time function */

#define SCALE_SEC  100

#define SCALE_USEC  10000

#define MY_HOW_OFTEN_TO_ALARM  2  /* How often we want info on screen */

#define MY_HOW_OFTEN_TO_WRITE  1000  /* How often we want info on screen */

#if defined(HAVE_CHARSET_utf8mb3) || defined(HAVE_CHARSET_utf8mb4)

#define DRIZZLE_UNIVERSAL_CLIENT_CHARSET "utf8"

#else

#define DRIZZLE_UNIVERSAL_CLIENT_CHARSET DRIZZLE_DEFAULT_CHARSET_NAME

#endif

#include <dlfcn.h>

/* FreeBSD 2.2.2 does not define RTLD_NOW) */

#ifndef RTLD_NOW

#define RTLD_NOW 1

#endif

#define cmax(a, b)       ((a) > (b) ? (a) : (b))

#define cmin(a, b)       ((a) < (b) ? (a) : (b))

#define DRIZZLE_SERVER

/* Length of decimal number represented by INT32. */

#define MY_INT32_NUM_DECIMAL_DIGITS 11

/* Length of decimal number represented by INT64. */

#define MY_INT64_NUM_DECIMAL_DIGITS 21

#define PROTOCOL_VERSION 10

/*

  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

/* Max file name len */

#define FN_LEN 256

/* Max length of extension (part of FN_LEN) */

#define FN_EXTLEN 20

/* Max length of full path-name */

#define FN_REFLEN 512

/* File extension character */

#define FN_EXTCHAR '.'

/* ~ is used as abbrev for home dir */

#define FN_HOMELIB '~'

/* ./ is used as abbrev for current dir */

#define FN_CURLIB '.'

/* Parent directory; Must be a string */

#define FN_PARENTDIR ".."

/* Quote argument (before cpp) */

#ifndef QUOTE_ARG

# define QUOTE_ARG(x) #x

#endif

/* Quote argument, (after cpp) */

#ifndef STRINGIFY_ARG

# define STRINGIFY_ARG(x) QUOTE_ARG(x)

#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__)

#define __builtin_expect(x, expected_value) (x)

#endif

#define likely(x)  __builtin_expect((x),1)

#define unlikely(x)  __builtin_expect((x),0)

/*

  Only Linux is known to need an explicit sync of the directory to make sure a

  file creation/deletion/renaming in(from,to) this directory durable.

*/

#ifdef TARGET_OS_LINUX

#define NEED_EXPLICIT_SYNC_DIR 1

#endif

/* We need to turn off _DTRACE_VERSION if we're not going to use dtrace */

#if !defined(HAVE_DTRACE)

# undef _DTRACE_VERSION

# define _DTRACE_VERSION 0

#endif

#endif /* DRIZZLE_SERVER_GLOBAL_H */