NAME    [Toc]    [Back]

       getpagesize - get system page size

SYNOPSIS    [Toc]    [Back]

       #include <unistd.h>

       size_t getpagesize(void);

DESCRIPTION    [Toc]    [Back]

       Return  the number of bytes in a page.  This is the system's page size,
       which is not necessarily the same as the hardware page size.

NOTES    [Toc]    [Back]

       getpagesize is implemented as a library function in DLL 4.4.1.  Depending
  on	what  is  defined  when the library is compiled, this function
       returns EXEC_PAGESIZE (set to 4096 in Linux 0.99.11), NBPG (set to 4096
       in  Linux  0.99.11), or NBPC (not defined in Linux 0.99.11 or DLL 4.4.1
       libraries).

BUGS    [Toc]    [Back]

       Depending on architecture and library version, this library call may do
       a  system call or not. It may return a value different from that of the
       system call. For example, on a sun4 with  libc5	this  routine  returns
       EXEC_PAGESIZE,  which is 8192, and not PAGE_SIZE, which is 4096, or the
       result of the system call, which also is 4096.

CONFORMING TO    [Toc]    [Back]

       SVr4, 4.4BSD (this call first appeared in 4.2BSD).

SEE ALSO    [Toc]    [Back]

       sbrk(2)



Linux 0.99.11			  1993-07-23			GETPAGESIZE(2)