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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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* Copyright (C) 2008 Sun Microsystems
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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/* This is the include file that should be included 'first' in every C file. */
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#ifndef DRIZZLED_GLOBAL_H
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#define DRIZZLED_GLOBAL_H
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#if defined(i386) && !defined(__i386__)
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#if defined(__sun) && defined(_FILE_OFFSET_BITS)
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#undef _FILE_OFFSET_BITS
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#if defined(__cplusplus)
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# if defined(HAVE_MEMORY)
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# if defined(HAVE_TR1_MEMORY)
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# include <tr1/memory>
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# if defined(HAVE_BOOST_SHARED_PTR_HPP)
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# include <boost/shared_ptr.hpp>
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# include <inttypes.h>
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# include <errno.h> /* Recommended by debian */
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A lot of our programs uses asserts, so better to always include it
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#if TIME_WITH_SYS_TIME
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# include <sys/time.h>
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# include <sys/time.h>
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#if defined(__cplusplus)
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# if !defined(SHARED_PTR_NAMESPACE)
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# error SHARED_PTR_NAMESPACE not defined, configure error!
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# if defined(SHARED_PTR_NAMESPACE)
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//We aren't using this yet - don't actually put in code yet.
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//using SHARED_PTR_NAMESPACE::shared_ptr;
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#endif /* defined(SHARED_PTR_NAMESPACE) */
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Temporary solution to solve bug#7156. Include "sys/types.h" before
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the thread headers, else the function madvise() will not be defined
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#if defined(HAVE_SYS_TYPES_H) && ( defined(sun) || defined(__sun) )
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#include <sys/types.h>
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#include <pthread.h> /* AIX must have this included first */
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#define _REENTRANT 1 /* Threads requires reentrant code */
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#ifdef HAVE_SYS_STAT_H
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# include <sys/stat.h>
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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/* Declared in int2str() */
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extern char _dig_vec_upper[];
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extern char _dig_vec_lower[];
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template <class T> void set_if_bigger(T &a, const T &b)
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template <class T> void set_if_smaller(T &a, const T &b)
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#define set_if_bigger(a,b) do { \
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const typeof(a) _a = (a); \
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const typeof(b) _b = (b); \
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(void) (&_a == &_b); \
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if ((a) < (b)) (a)=(b); \
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#define set_if_smaller(a,b) do { \
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const typeof(a) _a = (a); \
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const typeof(b) _b = (b); \
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(void) (&_a == &_b); \
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if ((a) > (b)) (a)=(b); \
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#define set_if_bigger(a,b) do { if ((a) < (b)) (a)=(b); } while(0)
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#define set_if_smaller(a,b) do { if ((a) > (b)) (a)=(b); } while(0)
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#define array_elements(A) ((size_t) (sizeof(A)/sizeof(A[0])))
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/* Some types that is different between systems */
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typedef int File; /* File descriptor */
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#define FN_LIBCHAR '/'
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#define FN_ROOTDIR "/"
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#define MY_NFILE 64 /* This is only used to save filenames */
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#ifndef OS_FILE_LIMIT
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#define OS_FILE_LIMIT 65535
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How much overhead does malloc have. The code often allocates
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something like 1024-MALLOC_OVERHEAD bytes
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#define MALLOC_OVERHEAD 8
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/* get memory in huncs */
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static const uint32_t ONCE_ALLOC_INIT= 4096;
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/* Typical record cash */
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static const uint32_t RECORD_CACHE_SIZE= 64*1024;
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/* Typical key cash */
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static const uint32_t KEY_CACHE_SIZE= 8*1024*1024;
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/* Default size of a key cache block */
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static const uint32_t KEY_CACHE_BLOCK_SIZE= 1024;
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/* Some things that this system doesn't have */
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/* Some defines of functions for portability */
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#undef remove /* Crashes MySQL on SCO 5.0.0 */
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#ifndef uint64_t2double
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#define uint64_t2double(A) ((double) (uint64_t) (A))
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#define my_off_t2double(A) ((double) (my_off_t) (A))
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#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
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#define ulong_to_double(X) ((double) (ulong) (X))
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#ifndef STACK_DIRECTION
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#error "please add -DSTACK_DIRECTION=1 or -1 to your CPPFLAGS"
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#if !defined(FLT_MIN)
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#define FLT_MIN ((float)1.40129846432481707e-45)
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#if !defined(FLT_MAX)
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#define FLT_MAX ((float)3.40282346638528860e+38)
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/* From limits.h instead */
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#define DBL_MIN 4.94065645841246544e-324
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#define DBL_MAX 1.79769313486231470e+308
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#define SIZE_T_MAX ~((size_t) 0)
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/* Define missing math constants. */
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#define M_PI 3.14159265358979323846
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#define M_E 2.7182818284590452354
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#define M_LN2 0.69314718055994530942
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Max size that must be added to a so that we know Size to make
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#define MY_ALIGN(A,L) (((A) + (L) - 1) & ~((L) - 1))
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#define ALIGN_SIZE(A) MY_ALIGN((A),sizeof(double))
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/* Size to make adressable obj. */
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#define ALIGN_PTR(A, t) ((t*) MY_ALIGN((A),sizeof(t)))
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/* Offset of field f in structure t */
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#define OFFSET(t, f) ((size_t)(char *)&((t *)0)->f)
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#define ADD_TO_PTR(ptr,size,type) (type) ((unsigned char*) (ptr)+size)
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#define PTR_BYTE_DIFF(A,B) (ptrdiff_t) ((unsigned char*) (A) - (unsigned char*) (B))
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#define MY_DIV_UP(A, B) (((A) + (B) - 1) / (B))
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#define MY_ALIGNED_BYTE_ARRAY(N, S, T) T N[MY_DIV_UP(S, sizeof(T))]
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/* Typdefs for easyier portability */
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#if !defined(HAVE_ULONG) && !defined(__USE_MISC)
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typedef unsigned long ulong; /* Short for unsigned long */
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typedef uint64_t my_off_t;
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#if defined(SIZEOF_OFF_T)
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# if (SIZEOF_OFF_T == 8)
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# define OFF_T_MAX (INT64_MAX)
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# define OFF_T_MAX (INT32_MAX)
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#define MY_FILEPOS_ERROR -1
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/* Defines for time function */
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#define SCALE_SEC 100
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#define SCALE_USEC 10000
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#define DRIZZLE_SERVER
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/* Length of decimal number represented by INT32. */
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#define MY_INT32_NUM_DECIMAL_DIGITS 11
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/* Length of decimal number represented by INT64. */
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#define MY_INT64_NUM_DECIMAL_DIGITS 21
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Io buffer size; Must be a power of 2 and
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a multiple of 512. May be
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smaller what the disk page size. This influences the speed of the
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isam btree library. eg to big to slow.
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/* Max file name len */
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/* Max length of extension (part of FN_LEN) */
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/* Max length of full path-name */
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#define FN_REFLEN 512
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/* File extension character */
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#define FN_EXTCHAR '.'
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/* ~ is used as abbrev for home dir */
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#define FN_HOMELIB '~'
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/* ./ is used as abbrev for current dir */
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#define FN_CURLIB '.'
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/* Parent directory; Must be a string */
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#define FN_PARENTDIR ".."
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/* Quote argument (before cpp) */
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# define QUOTE_ARG(x) #x
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/* Quote argument, (after cpp) */
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#ifndef STRINGIFY_ARG
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# define STRINGIFY_ARG(x) QUOTE_ARG(x)
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* The macros below are borrowed from include/linux/compiler.h in the
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* Linux kernel. Use them to indicate the likelyhood of the truthfulness
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* of a condition. This serves two purposes - newer versions of gcc will be
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* able to optimize for branch predication, which could yield siginficant
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* performance gains in frequently executed sections of the code, and the
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* other reason to use them is for documentation
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#if !defined(__GNUC__)
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#define __builtin_expect(x, expected_value) (x)
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#define likely(x) __builtin_expect((x),1)
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#define unlikely(x) __builtin_expect((x),0)
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Only Linux is known to need an explicit sync of the directory to make sure a
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file creation/deletion/renaming in(from,to) this directory durable.
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#ifdef TARGET_OS_LINUX
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#define NEED_EXPLICIT_SYNC_DIR 1
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/* We need to turn off _DTRACE_VERSION if we're not going to use dtrace */
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#if !defined(HAVE_DTRACE)
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# undef _DTRACE_VERSION
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# define _DTRACE_VERSION 0
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#endif /* DRIZZLED_GLOBAL_H */