NAME
getpagesizes —
get system page sizes
LIBRARY
library “libc”
SYNOPSIS
#include
<sys/mman.h>
int
getpagesizes(size_t
pagesize[], int
nelem);
DESCRIPTION
Thegetpagesizes()
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.
RETURN VALUES
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.
ERRORS
The getpagesizes() function will succeed
unless:
- [
EINVAL] - The pagesize argument is
NULLand the nelem argument is non-zero. - [
EINVAL] - The nelem argument is less than zero.
SEE ALSO
HISTORY
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.
AUTHORS
This manual page was written by Alan L. Cox <alc@cs.rice.edu>.