NAME

getpagesize — get system page size

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include <unistd.h>

int
getpagesize(void);

DESCRIPTION

The getpagesize() function returns the number of bytes in a page. Page granularity is the granularity of many of the memory management calls.

The page size is a system page size and may not be the same as the underlying hardware page size.

IEEE Std 1003.1-2001 (“POSIX.1”) removed getpagesize. Portable applications should use ‘sysconf(_SC_PAGESIZE)’ instead.

SEE ALSO

pagesize(1), sbrk(2), getpagesizes(3), sysconf(3)

HISTORY

The getpagesize() function appeared in 4.2BSD.