From a334319f6530564d22e775935d9c91663623a1b4 Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Wed, 22 Dec 2004 20:10:10 +0000 Subject: (CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4. --- linuxthreads/man/pthread_once.man | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 linuxthreads/man/pthread_once.man (limited to 'linuxthreads/man/pthread_once.man') diff --git a/linuxthreads/man/pthread_once.man b/linuxthreads/man/pthread_once.man new file mode 100644 index 0000000000..e9d117b656 --- /dev/null +++ b/linuxthreads/man/pthread_once.man @@ -0,0 +1,34 @@ +.TH PTHREAD_ONCE 3 LinuxThreads + +.SH NAME +pthread_once \- once-only initialization + +.SH SYNOPSIS +#include + +pthread_once_t once_control = PTHREAD_ONCE_INIT; + +int pthread_once(pthread_once_t *once_control, void (*init_routine) (void)); + +.SH DESCRIPTION + +The purpose of !pthread_once! is to ensure that a piece of +initialization code is executed at most once. The |once_control| +argument points to a static or extern variable statically initialized +to !PTHREAD_ONCE_INIT!. + +The first time !pthread_once! is called with a given |once_control| +argument, it calls |init_routine| with no argument and changes the +value of the |once_control| variable to record that initialization has +been performed. Subsequent calls to !pthread_once! with the same +!once_control! argument do nothing. + +.SH "RETURN VALUE" +!pthread_once! always returns 0. + +.SH ERRORS +None. + +.SH AUTHOR +Xavier Leroy + -- cgit 1.4.1