pthread_once man page on FreeBSD

Man page or keyword search:  
man Server   9747 pages
apropos Keyword Search (all sections)
Output format
FreeBSD logo
[printable version]

PTHREAD_ONCE(3)		 BSD Library Functions Manual	       PTHREAD_ONCE(3)

NAME
     pthread_once — dynamic package initialization

LIBRARY
     POSIX Threads Library (libpthread, -lpthread)

SYNOPSIS
     #include <pthread.h>

     pthread_once_t once_control = PTHREAD_ONCE_INIT;

     int
     pthread_once(pthread_once_t *once_control, void (*init_routine)(void));

DESCRIPTION
     The first call to pthread_once() by any thread in a process, with a given
     once_control, will call the init_routine() with no arguments.  Subsequent
     calls to pthread_once() with the same once_control will not call the
     init_routine().  On return from pthread_once(), it is guaranteed that
     init_routine() has completed.  The once_control parameter is used to
     determine whether the associated initialization routine has been called.

     The function pthread_once() is not a cancellation point.  However, if
     init_routine() is a cancellation point and is cancelled, the effect on
     once_control is as if pthread_once() was never called.

     The constant PTHREAD_ONCE_INIT is defined by header <pthread.h>.

     The behavior of pthread_once() is undefined if once_control has automatic
     storage duration or is not initialized by PTHREAD_ONCE_INIT.

RETURN VALUES
     If successful, the pthread_once() function will return zero.  Otherwise
     an error number will be returned to indicate the error.

ERRORS
     None.

STANDARDS
     The pthread_once() function conforms to ISO/IEC 9945-1:1996 (“POSIX.1”).

BSD				 April 4, 1996				   BSD
[top]

List of man pages available for FreeBSD

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
...................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net