Manual Pages  — GETPAGESIZES

getpagesizes – get system page sizes

LIBRARY SYNOPSIS DESCRIPTION RETURN VALUES ERRORS SEE ALSO HISTORY AUTHORS

Standard C Library (libc, -lc)

#include <sys/mman.h>

int
getpagesizes(size_t pagesize[], int nelem);

The getpagesizes() function retrieves page size information from the system. When it is called with pagesize specified as NULL and nelem specified as 0, it returns the number of distinct page sizes that are supported by the system. Otherwise, it assigns up to nelem of the system-supported page sizes to consecutive elements of the array referenced by pagesize. These page sizes are expressed in bytes. In this case, getpagesizes() returns the number of such page sizes that it assigned to the array.

If successful, the getpagesizes() function returns either the number of page sizes that are supported by the system or the number of supported page sizes that it assigned to the array referenced by pagesize. Otherwise, it returns the value -1 and sets errno to indicate the error.

The getpagesizes() function will succeed unless:

[EINVAL]
	The pagesize argument is NULL and the nelem argument is non-zero.
[EINVAL]
	The nelem argument is less than zero.

The getpagesizes() function first appeared in Solaris 9. This manual page was written in conjunction with a new but compatible implementation that was first released in FreeBSD 7.3 .

This manual page was written by Alan L. Cox <Mt alc@cs.rice.edu>.