Copyright (c) 1996 John Birrell <jb@cimlogic.com.au>.
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. All advertising materials mentioning features or use of this software
must display the following acknowledgement:
This product includes software developed by John Birrell.
4. Neither the name of the author nor the names of any co-contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.

$FreeBSD: src/lib/libc_r/man/pthread_getspecific.3,v 1.6.2.3 2001/08/17 15:42:51 ru Exp $

.Dd April 4, 1996 .Dt PTHREAD_GETSPECIFIC 3 .Os .Sh NAME .Nm pthread_getspecific .Nd get a thread-specific data value .Sh SYNOPSIS .Fd #include <pthread.h> .Ft void * .Fo pthread_getspecific .Fa "pthread_key_t key" .Fc .Sh DESCRIPTION The .Fn pthread_getspecific function returns the value that is currently bound to the specified .Fa key , on behalf of the calling thread.

p The effect of calling .Fn pthread_getspecific with a .Fa key value that was not obtained from .Fn pthread_key_create , or after a .Fa key has been deleted with .Fn pthread_key_delete , is undefined.

p .Fn pthread_getspecific may be called from a thread-specific data destructor function. .Sh RETURN VALUES The .Fn pthread_getspecific function will return the thread-specific data value associated with the given .Fa key . If no thread-specific data value is associated with .Fa key , the value NULL is returned. .Sh ERRORS None. .Sh SEE ALSO .Xr pthread_key_create 3 , .Xr pthread_key_delete 3 , .Xr pthread_setspecific 3 .Sh STANDARDS .Fn pthread_getspecific conforms to .St -p1003.1-96 .