pthread_getspecific.3 revision 1.6
$NetBSD: pthread_getspecific.3,v 1.6 2017/10/22 16:37:24 abhinav Exp $
Copyright (c) 2002, 2010 The NetBSD Foundation, Inc.
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THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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Copyright (c) 1996 John Birrell <jb@cimlogic.com.au>.
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modification, are permitted provided that the following conditions
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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
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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
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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$FreeBSD: src/lib/libpthread/man/pthread_getspecific.3,v 1.11 2002/09/16 19:29:28 mini Exp $
.Dd July 9, 2010 .Dt PTHREAD_GETSPECIFIC 3 .Os .Sh NAME .Nm pthread_getspecific , .Nm pthread_setspecific .Nd thread-specific data value .Sh LIBRARY .Lb libpthread .Sh SYNOPSIS n pthread.h .Ft void * .Fn pthread_getspecific "pthread_key_t key" .Ft int .Fn pthread_setspecific "pthread_key_t key" "const void *value" .Sh DESCRIPTION The .Fn pthread_getspecific function returns the value currently bound to the specified .Fa key on behalf of the calling thread. Conversely, the .Fn pthread_setspecific function associates a thread-specific value with a .Fa key obtained via a previous call to .Xr pthread_key_create 3 . Different threads have different values bound to each key. These values are typically pointers to blocks of dynamically allocated memory that have been reserved for use by the calling thread.
Copyright (c) 2002, 2010 The NetBSD Foundation, Inc.
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.
THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
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/libpthread/man/pthread_getspecific.3,v 1.11 2002/09/16 19:29:28 mini Exp $
.Dd July 9, 2010 .Dt PTHREAD_GETSPECIFIC 3 .Os .Sh NAME .Nm pthread_getspecific , .Nm pthread_setspecific .Nd thread-specific data value .Sh LIBRARY .Lb libpthread .Sh SYNOPSIS n pthread.h .Ft void * .Fn pthread_getspecific "pthread_key_t key" .Ft int .Fn pthread_setspecific "pthread_key_t key" "const void *value" .Sh DESCRIPTION The .Fn pthread_getspecific function returns the value currently bound to the specified .Fa key on behalf of the calling thread. Conversely, the .Fn pthread_setspecific function associates a thread-specific value with a .Fa key obtained via a previous call to .Xr pthread_key_create 3 . Different threads have different values bound to each key. These values are typically pointers to blocks of dynamically allocated memory that have been reserved for use by the calling thread.
p Undefined behavior may follow if either function is called with a .Fa key value not obtained from .Xr pthread_key_create 3 , or if the call is made after .Fa key has been deleted with .Xr pthread_key_delete 3 . It is possible to call either function from a thread-specific data destructor function. Note however that this is not well defined for the .Fn pthread_setspecific function; lost storage or infinite loops may occur. .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 , then the value .Dv NULL is returned. If successful, the .Fn pthread_setspecific function will return zero. Otherwise an error number will be returned to indicate the error. .Sh ERRORS No errors are defined for either function. .Sh SEE ALSO .Xr pthread_key_create 3 .Sh STANDARDS These functions conform to .St -p1003.1-2001 .