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Standard C Library Functionsgetpagesize(3C)


NAME

 getpagesize - get system page size

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 need not be the same as the underlying hardware page size.

The getpagesize() function is equivalent to sysconf(_SC_PAGE_SIZE) and sysconf(_SC_PAGESIZE). See sysconf(3C).

RETURN VALUES

 

The getpagesize() function returns the current page size.

ERRORS

 

No errors are defined.

USAGE

 

The value returned by getpagesize() need not be the minimum value that malloc(3C) can allocate. Moreover, the application cannot assume that an object of this size can be allocated with malloc().

ATTRIBUTES

 

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE
MT-LevelMT-Safe

SEE ALSO

 

pagesize(1), brk(2), getrlimit(2), mmap(2), mprotect(2), munmap(2), malloc(3C), msync(3C), sysconf(3C), attributes(5)


SunOS 5.9Go To TopLast Changed 27 Jun 2000

 
      
      
Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.