1/* portab.h -- portability layer 2 3 This file is part of the LZO real-time data compression library. 4 5 Copyright (C) 2008 Markus Franz Xaver Johannes Oberhumer 6 Copyright (C) 2007 Markus Franz Xaver Johannes Oberhumer 7 Copyright (C) 2006 Markus Franz Xaver Johannes Oberhumer 8 Copyright (C) 2005 Markus Franz Xaver Johannes Oberhumer 9 Copyright (C) 2004 Markus Franz Xaver Johannes Oberhumer 10 Copyright (C) 2003 Markus Franz Xaver Johannes Oberhumer 11 Copyright (C) 2002 Markus Franz Xaver Johannes Oberhumer 12 Copyright (C) 2001 Markus Franz Xaver Johannes Oberhumer 13 Copyright (C) 2000 Markus Franz Xaver Johannes Oberhumer 14 Copyright (C) 1999 Markus Franz Xaver Johannes Oberhumer 15 Copyright (C) 1998 Markus Franz Xaver Johannes Oberhumer 16 Copyright (C) 1997 Markus Franz Xaver Johannes Oberhumer 17 Copyright (C) 1996 Markus Franz Xaver Johannes Oberhumer 18 All Rights Reserved. 19 20 The LZO library is free software; you can redistribute it and/or 21 modify it under the terms of the GNU General Public License as 22 published by the Free Software Foundation; either version 2 of 23 the License, or (at your option) any later version. 24 25 The LZO library is distributed in the hope that it will be useful, 26 but WITHOUT ANY WARRANTY; without even the implied warranty of 27 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 28 GNU General Public License for more details. 29 30 You should have received a copy of the GNU General Public License 31 along with the LZO library; see the file COPYING. 32 If not, write to the Free Software Foundation, Inc., 33 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 34 35 Markus F.X.J. Oberhumer 36 <markus@oberhumer.com> 37 http://www.oberhumer.com/opensource/lzo/ 38 */ 39 40 41#include "lzo/lzoconf.h" 42 43#if (LZO_CC_MSC && (_MSC_VER >= 1000 && _MSC_VER < 1200)) 44 /* avoid `-W4' warnings in system header files */ 45# pragma warning(disable: 4201 4214 4514) 46#endif 47#if (LZO_CC_MSC && (_MSC_VER >= 1300)) 48 /* avoid `-Wall' warnings in system header files */ 49# pragma warning(disable: 4163 4255 4820) 50 /* avoid warnings about inlining */ 51# pragma warning(disable: 4710 4711) 52#endif 53#if (LZO_CC_MSC && (_MSC_VER >= 1400)) 54 /* avoid warnings when using "deprecated" POSIX functions */ 55# pragma warning(disable: 4996) 56#endif 57#if (LZO_CC_PELLESC && (__POCC__ >= 290)) 58# pragma warn(disable:2002) 59#endif 60 61 62/************************************************************************* 63// 64**************************************************************************/ 65 66#if defined(__LZO_MMODEL_HUGE) || !(defined(LZO_LIBC_ISOC90) || defined(LZO_LIBC_ISOC99)) 67 68#include "examples/portab_a.h" 69 70#else 71 72/* INFO: 73 * The "portab_a.h" version above uses the ACC library to add 74 * support for ancient systems (like 16-bit DOS) and to provide 75 * some gimmicks like Windows high-resolution timers. 76 * Still, on any halfway modern machine you can also use the 77 * following pure ANSI-C code instead. 78 */ 79 80#include <stddef.h> 81#include <stdlib.h> 82#include <stdio.h> 83#include <string.h> 84#include <ctype.h> 85#include <time.h> 86#if defined(CLK_TCK) && !defined(CLOCKS_PER_SEC) 87# define CLOCKS_PER_SEC CLK_TCK 88#endif 89 90#if defined(WANT_LZO_MALLOC) 91# define lzo_malloc(a) (malloc(a)) 92# define lzo_free(a) (free(a)) 93#endif 94#if defined(WANT_LZO_FREAD) 95# define lzo_fread(f,b,s) (fread(b,1,s,f)) 96# define lzo_fwrite(f,b,s) (fwrite(b,1,s,f)) 97#endif 98#if defined(WANT_LZO_UCLOCK) 99# define lzo_uclock_handle_t int 100# define lzo_uclock_t double 101# define lzo_uclock_open(a) ((void)(a)) 102# define lzo_uclock_close(a) ((void)(a)) 103# define lzo_uclock_read(a,b) *(b) = (clock() / (double)(CLOCKS_PER_SEC)) 104# define lzo_uclock_get_elapsed(a,b,c) (*(c) - *(b)) 105#endif 106#if defined(WANT_LZO_WILDARGV) 107# define lzo_wildargv(a,b) ((void)0) 108#endif 109 110#endif 111 112 113/************************************************************************* 114// misc 115**************************************************************************/ 116 117/* turn on assertions */ 118#undef NDEBUG 119#include <assert.h> 120 121/* just in case */ 122#undef xmalloc 123#undef xfree 124#undef xread 125#undef xwrite 126#undef xputc 127#undef xgetc 128#undef xread32 129#undef xwrite32 130 131 132#if defined(WANT_LZO_UCLOCK) 133 134/* High quality benchmarking. 135 * 136 * Flush the CPU cache to get more accurate benchmark values. 137 * This needs custom kernel patches. As a result - in combination with 138 * the perfctr Linux kernel patches - accurate high-quality benchmarking 139 * is possible. 140 * 141 * All other methods (rdtsc, QueryPerformanceCounter, gettimeofday, ...) 142 * are completely unreliable for our purposes, and the only other 143 * option is to boot into a legacy single-task operating system 144 * like plain MSDOS and to directly reprogram the hardware clock. 145 * [The djgpp2 port of the gcc compiler has support functions for this.] 146 * 147 * Also, for embedded systems it's best to benchmark by using a 148 * CPU emulator/simulator software that can exactly count all 149 * virtual clock ticks. 150 */ 151 152#if !defined(lzo_uclock_flush_cpu_cache) 153# define lzo_uclock_flush_cpu_cache(h,flags) ((void)(h)) 154#endif 155 156#endif 157 158 159/* 160vi:ts=4:et 161*/ 162 163