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+/* 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
+*/
+