1999-07-15 17:31:44 +08:00
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/* Emulate getpagesize on systems that lack it. */
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#ifndef HAVE_GETPAGESIZE
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#ifdef HAVE_UNISTD_H
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2000-02-15 04:15:32 +08:00
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# include <unistd.h>
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1999-07-15 17:31:44 +08:00
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#endif
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2000-02-15 04:15:32 +08:00
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#if !defined getpagesize && defined _SC_PAGESIZE
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# if !(defined VMS && __VMS_VER < 70000000)
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# define getpagesize() sysconf (_SC_PAGESIZE)
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# endif
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#endif
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1999-07-15 17:31:44 +08:00
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2000-02-15 04:15:32 +08:00
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#if !defined getpagesize && defined VMS
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# ifdef __ALPHA
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# define getpagesize() 8192
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# else
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# define getpagesize() 512
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# endif
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#endif
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1999-07-15 17:31:44 +08:00
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2000-04-18 21:40:25 +08:00
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#if !defined getpagesize && HAVE_OS_H
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# include <OS.h>
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# if defined B_PAGE_SIZE
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# define getpagesize() B_PAGE_SIZE
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# endif
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#endif
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2000-02-15 04:15:32 +08:00
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#ifndef getpagesize
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# include <sys/param.h>
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# ifdef EXEC_PAGESIZE
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# define getpagesize() EXEC_PAGESIZE
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# else
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# ifdef NBPG
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# ifndef CLSIZE
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# define CLSIZE 1
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# endif
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# define getpagesize() (NBPG * CLSIZE)
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# else
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# ifdef NBPC
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# define getpagesize() NBPC
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# endif
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# endif
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# endif
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#endif
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1999-07-15 17:31:44 +08:00
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#endif /* not HAVE_GETPAGESIZE */
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