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Diffstat (limited to 'examples/portab.h')
| -rw-r--r-- | examples/portab.h | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/examples/portab.h b/examples/portab.h new file mode 100644 index 0000000..b4b5a21 --- /dev/null +++ b/examples/portab.h @@ -0,0 +1,187 @@ +/* portab.h -- portability layer + + This file is part of the LZO real-time data compression library. + + Copyright (C) 2011 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2010 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2009 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2008 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2007 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2006 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2005 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2004 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2003 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2002 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2001 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 2000 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 1999 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 1998 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 1997 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 1996 Markus Franz Xaver Johannes Oberhumer + All Rights Reserved. + + The LZO library 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. + + The LZO library 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 the LZO library; see the file COPYING. + If not, write to the Free Software Foundation, Inc., + 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + + Markus F.X.J. Oberhumer + <markus@oberhumer.com> + http://www.oberhumer.com/opensource/lzo/ + */ + + +#include "lzo/lzoconf.h" + +#if (LZO_CC_MSC && (_MSC_VER >= 1000 && _MSC_VER < 1200)) + /* avoid '-W4' warnings in system header files */ +# pragma warning(disable: 4201 4214 4514) +#endif +#if (LZO_CC_MSC && (_MSC_VER >= 1300)) + /* avoid '-Wall' warnings in system header files */ +# pragma warning(disable: 4163 4255 4820) + /* avoid warnings about inlining */ +# pragma warning(disable: 4710 4711) +#endif +#if (LZO_CC_MSC && (_MSC_VER >= 1400)) + /* avoid warnings when using "deprecated" POSIX functions */ +# pragma warning(disable: 4996) +#endif +#if (LZO_CC_PELLESC && (__POCC__ >= 290)) +# pragma warn(disable:2002) +#endif + + +/************************************************************************* +// +**************************************************************************/ + +#if defined(__LZO_MMODEL_HUGE) || defined(ACC_WANT_ACCLIB_GETOPT) || !(defined(LZO_LIBC_ISOC90) || defined(LZO_LIBC_ISOC99)) + +#include "examples/portab_a.h" + +#else + +/* INFO: + * The "portab_a.h" version above uses the ACC library to add + * support for ancient systems (like 16-bit DOS) and to provide + * some gimmicks like Windows high-resolution timers. + * Still, on any halfway modern machine you can also use the + * following pure ANSI-C code instead. + */ + +#include <stddef.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <ctype.h> +#include <time.h> +#if defined(CLK_TCK) && !defined(CLOCKS_PER_SEC) +# define CLOCKS_PER_SEC CLK_TCK +#endif + +#if defined(WANT_LZO_MALLOC) +# define lzo_malloc(a) (malloc(a)) +# define lzo_free(a) (free(a)) +#endif +#if defined(WANT_LZO_FREAD) +# define lzo_fread(f,b,s) (fread(b,1,s,f)) +# define lzo_fwrite(f,b,s) (fwrite(b,1,s,f)) +#endif +#if defined(WANT_LZO_UCLOCK) +# define lzo_uclock_handle_t int +# define lzo_uclock_t double +# define lzo_uclock_open(a) ((void)(a)) +# define lzo_uclock_close(a) ((void)(a)) +# define lzo_uclock_read(a,b) *(b) = (clock() / (double)(CLOCKS_PER_SEC)) +# define lzo_uclock_get_elapsed(a,b,c) (*(c) - *(b)) +#endif +#if defined(WANT_LZO_WILDARGV) +# define lzo_wildargv(a,b) ((void)0) +#endif + +#endif + + +/************************************************************************* +// misc +**************************************************************************/ + +/* turn on assertions */ +#undef NDEBUG +#include <assert.h> + +/* just in case */ +#undef xmalloc +#undef xfree +#undef xread +#undef xwrite +#undef xputc +#undef xgetc +#undef xread32 +#undef xwrite32 + + +#if defined(WANT_XMALLOC) +static lzo_voidp xmalloc(lzo_uint len) +{ + lzo_voidp p; + lzo_uint align = (lzo_uint) sizeof(lzo_align_t); + + p = (lzo_voidp) lzo_malloc(len > 0 ? len : 1); + if (p == NULL) + { + printf("%s: out of memory\n", progname); + exit(1); + } + if (len >= align && __lzo_align_gap(p, align) != 0) + { + printf("%s: C library problem: malloc() returned misaligned pointer!\n", progname); + exit(1); + } + return p; +} +#endif + + +#if defined(WANT_LZO_UCLOCK) + +/* High quality benchmarking. + * + * Flush the CPU cache to get more accurate benchmark values. + * This needs custom kernel patches. As a result - in combination with + * the perfctr Linux kernel patches - accurate high-quality benchmarking + * is possible. + * + * All other methods (rdtsc, QueryPerformanceCounter, gettimeofday, ...) + * are completely unreliable for our purposes, and the only other + * option is to boot into a legacy single-task operating system + * like plain MSDOS and to directly reprogram the hardware clock. + * [The djgpp2 port of the gcc compiler has support functions for this.] + * + * Also, for embedded systems it's best to benchmark by using a + * CPU emulator/simulator software that can exactly count all + * virtual clock ticks. + */ + +#if !defined(lzo_uclock_flush_cpu_cache) +# define lzo_uclock_flush_cpu_cache(h,flags) ((void)(h)) +#endif + +#endif + + +/* +vi:ts=4:et +*/ + |