개요

• 솔라나라에 설명된 어플리케이션에 대해 맨 페이지를 찾아 출력한다.
• MAN 페이지에 대한 설명은 윈디하나의 솔라나라: MAN 페이지을 참고하자.
• svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.

getpagesize(2)

GETPAGESIZE(2)             Linux Programmer's Manual            GETPAGESIZE(2)

NAME
       getpagesize - get memory page size

SYNOPSIS
       #include <unistd.h>

       int getpagesize(void);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       getpagesize():
           Since glibc 2.19:
               _DEFAULT_SOURCE || ! (_POSIX_C_SOURCE >= 200112L)
           From glibc 2.12 to 2.19:
               _BSD_SOURCE || ! (_POSIX_C_SOURCE >= 200112L)
           Before glibc 2.12:
               _BSD_SOURCE || _XOPEN_SOURCE >= 500

DESCRIPTION
       The  function  getpagesize()  returns  the  number of bytes in a memory
       page, where "page" is a fixed-length block, the unit for memory alloca‐
       tion and file mapping performed by mmap(2).

CONFORMING TO
       SVr4, 4.4BSD, SUSv2.   In  SUSv2  the  getpagesize()  call  is  labeled
       LEGACY,  and  in  POSIX.1-2001 it has been dropped; HP-UX does not have
       this call.

NOTES
       Portable applications should employ  sysconf(_SC_PAGESIZE)  instead  of
       getpagesize():

           #include <unistd.h>
           long sz = sysconf(_SC_PAGESIZE);

       (Most systems allow the synonym _SC_PAGE_SIZE for _SC_PAGESIZE.)

       Whether  getpagesize() is present as a Linux system call depends on the
       architecture.  If it is, it returns the kernel symbol PAGE_SIZE,  whose
       value  depends  on  the architecture and machine model.  Generally, one
       uses binaries that are dependent on the architecture but not on the ma‐
       chine model, in order to have a single binary distribution  per  archi‐
       tecture.   This  means that a user program should not find PAGE_SIZE at
       compile time from a header file, but use  an  actual  system  call,  at
       least for those architectures (like sun4) where this dependency exists.
       Here glibc 2.0 fails because its getpagesize() returns a statically de‐
       rived  value,  and  does not use a system call.  Things are OK in glibc
       2.1.

SEE ALSO
       mmap(2), sysconf(3)

COLOPHON
       This page is part of release 5.02 of the Linux  man-pages  project.   A
       description  of  the project, information about reporting bugs, and the
       latest    version    of    this    page,    can     be     found     at
       https://www.kernel.org/doc/man-pages/.

Linux                             2017-09-15                    GETPAGESIZE(2)