| /* Condition variables for multithreading. |
| Copyright (C) 2008-2020 Free Software Foundation, Inc. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, see <https://www.gnu.org/licenses/>. */ |
| |
| /* Written by Yoann Vandoorselaere <yoann@prelude-ids.org>, 2008, |
| and Bruno Haible <bruno@clisp.org>, 2008. */ |
| |
| #include <config.h> |
| |
| #define _GLTHREAD_COND_INLINE _GL_EXTERN_INLINE |
| #include "glthread/cond.h" |
| |
| /* ========================================================================= */ |
| |
| #if USE_ISOC_THREADS || USE_ISOC_AND_POSIX_THREADS |
| |
| int |
| glthread_cond_init (gl_cond_t *condition) |
| { |
| if (cnd_init (&condition->condition) != thrd_success) |
| return ENOMEM; |
| condition->init_needed = 0; |
| return 0; |
| } |
| |
| int |
| glthread_cond_wait (gl_cond_t *condition, gl_lock_t *lock) |
| { |
| if (condition->init_needed) |
| call_once (&condition->init_once, condition->init_func); |
| if (lock->init_needed) |
| call_once (&lock->init_once, lock->init_func); |
| if (cnd_wait (&condition->condition, &lock->mutex) != thrd_success) |
| return EINVAL; |
| return 0; |
| } |
| |
| int |
| glthread_cond_timedwait (gl_cond_t *condition, gl_lock_t *lock, |
| const struct timespec *abstime) |
| { |
| if (condition->init_needed) |
| call_once (&condition->init_once, condition->init_func); |
| if (lock->init_needed) |
| call_once (&lock->init_once, lock->init_func); |
| switch (cnd_timedwait (&condition->condition, &lock->mutex, abstime)) |
| { |
| case thrd_success: |
| break; |
| case thrd_timedout: |
| return ETIMEDOUT; |
| default: |
| return EINVAL; |
| } |
| return 0; |
| } |
| |
| int |
| glthread_cond_signal (gl_cond_t *condition) |
| { |
| if (condition->init_needed) |
| call_once (&condition->init_once, condition->init_func); |
| if (cnd_signal (&condition->condition) != thrd_success) |
| return EINVAL; |
| return 0; |
| } |
| |
| int |
| glthread_cond_broadcast (gl_cond_t *condition) |
| { |
| if (condition->init_needed) |
| call_once (&condition->init_once, condition->init_func); |
| if (cnd_broadcast (&condition->condition) != thrd_success) |
| return EINVAL; |
| return 0; |
| } |
| |
| int |
| glthread_cond_destroy (gl_cond_t *condition) |
| { |
| if (condition->init_needed) |
| call_once (&condition->init_once, condition->init_func); |
| cnd_destroy (&condition->condition); |
| return 0; |
| } |
| |
| #endif |
| |
| /* ========================================================================= */ |
| |
| #if USE_POSIX_THREADS |
| |
| #endif |
| |
| /* ========================================================================= */ |
| |
| #if USE_WINDOWS_THREADS |
| |
| #endif |
| |
| /* ========================================================================= */ |