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getpagesize.h
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Wrap
C/C++ Source or Header
|
1995-04-20
|
626b
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36 lines
/* Emulate getpagesize on systems that lack it. */
#ifndef HAVE_GETPAGESIZE
#ifdef VMS
#define getpagesize() 512
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef _SC_PAGESIZE
#define getpagesize() sysconf(_SC_PAGESIZE)
#else
#include <sys/param.h>
#ifdef EXEC_PAGESIZE
#define getpagesize() EXEC_PAGESIZE
#else
#ifdef NBPG
#define getpagesize() NBPG * CLSIZE
#ifndef CLSIZE
#define CLSIZE 1
#endif /* no CLSIZE */
#else /* no NBPG */
#ifdef NBPC
#define getpagesize() NBPC
#endif /* NBPC */
#endif /* no NBPG */
#endif /* no EXEC_PAGESIZE */
#endif /* no _SC_PAGESIZE */
#endif /* not HAVE_GETPAGESIZE */