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https://https.git.savannah.gnu.org/git/gnulib.git
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Collin Funk
113 lines
3.0 KiB
C
113 lines
3.0 KiB
C
/* Condition variables for multithreading.
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Copyright (C) 2008-2026 Free Software Foundation, Inc.
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This file is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of the
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License, or (at your option) any later version.
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This file is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public 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 this program. If not, see <https://www.gnu.org/licenses/>. */
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/* Written by Yoann Vandoorselaere <yoann@prelude-ids.org>, 2008,
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and Bruno Haible <bruno@clisp.org>, 2008. */
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#define _GLTHREAD_COND_INLINE _GL_EXTERN_INLINE
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#include <config.h>
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#include "glthread/cond.h"
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/* ========================================================================= */
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#if USE_ISOC_THREADS || USE_ISOC_AND_POSIX_THREADS
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int
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glthread_cond_init (gl_cond_t *condition)
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{
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if (cnd_init (&condition->condition) != thrd_success)
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return ENOMEM;
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condition->init_needed = 0;
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return 0;
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}
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int
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glthread_cond_wait (gl_cond_t *condition, gl_lock_t *lock)
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{
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if (condition->init_needed)
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call_once (&condition->init_once, condition->init_func);
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if (lock->init_needed)
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call_once (&lock->init_once, lock->init_func);
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if (cnd_wait (&condition->condition, &lock->mutex) != thrd_success)
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return EINVAL;
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return 0;
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}
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int
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glthread_cond_timedwait (gl_cond_t *condition, gl_lock_t *lock,
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const struct timespec *abstime)
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{
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if (condition->init_needed)
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call_once (&condition->init_once, condition->init_func);
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if (lock->init_needed)
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call_once (&lock->init_once, lock->init_func);
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switch (cnd_timedwait (&condition->condition, &lock->mutex, abstime))
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{
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case thrd_success:
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break;
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case thrd_timedout:
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return ETIMEDOUT;
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default:
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return EINVAL;
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}
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return 0;
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}
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int
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glthread_cond_signal (gl_cond_t *condition)
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{
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if (condition->init_needed)
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call_once (&condition->init_once, condition->init_func);
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if (cnd_signal (&condition->condition) != thrd_success)
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return EINVAL;
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return 0;
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}
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int
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glthread_cond_broadcast (gl_cond_t *condition)
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{
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if (condition->init_needed)
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call_once (&condition->init_once, condition->init_func);
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if (cnd_broadcast (&condition->condition) != thrd_success)
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return EINVAL;
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return 0;
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}
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int
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glthread_cond_destroy (gl_cond_t *condition)
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{
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if (condition->init_needed)
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call_once (&condition->init_once, condition->init_func);
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cnd_destroy (&condition->condition);
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return 0;
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}
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#endif
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/* ========================================================================= */
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#if USE_POSIX_THREADS
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#endif
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/* ========================================================================= */
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#if USE_WINDOWS_THREADS
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#endif
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/* ========================================================================= */
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