38 lines
1.3 KiB
C++
38 lines
1.3 KiB
C++
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2013, 2014.
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This file is part of Sortix libpthread.
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Sortix libpthread is free software: you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by the
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Free Software Foundation, either version 3 of the License, or (at your
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option) any later version.
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Sortix libpthread is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with Sortix libpthread. If not, see <http://www.gnu.org/licenses/>.
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pthread_mutex_unlock.c++
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Unlocks a mutex.
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*******************************************************************************/
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#include <pthread.h>
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static const unsigned long UNLOCKED_VALUE = 0;
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static const unsigned long LOCKED_VALUE = 1;
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extern "C" int pthread_mutex_unlock(pthread_mutex_t* mutex)
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{
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if ( mutex->type == PTHREAD_MUTEX_RECURSIVE && mutex->recursion )
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return mutex->recursion--, 0;
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mutex->owner = 0;
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mutex->lock = UNLOCKED_VALUE;
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return 0;
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}
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