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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:36:22 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:36:22 +0000 |
commit | b88bb292821fd7742604ec4e280acebd9a049f62 (patch) | |
tree | 625e4e19e6619f7481e5a8103f876520950769f6 /src/contrib/semaphore.h | |
parent | Initial commit. (diff) | |
download | knot-b88bb292821fd7742604ec4e280acebd9a049f62.tar.xz knot-b88bb292821fd7742604ec4e280acebd9a049f62.zip |
Adding upstream version 3.0.5.upstream/3.0.5upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/contrib/semaphore.h')
-rw-r--r-- | src/contrib/semaphore.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/src/contrib/semaphore.h b/src/contrib/semaphore.h new file mode 100644 index 0000000..be49b7f --- /dev/null +++ b/src/contrib/semaphore.h @@ -0,0 +1,41 @@ +/* Copyright (C) 2019 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz> + + 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 3 of the License, 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/>. + */ + +#include <pthread.h> +#include <semaphore.h> + +#pragma once + +typedef struct { + pthread_mutex_t mutex; + pthread_cond_t cond; +} knot_sem_mutex_t; + +typedef struct { + int status; + union { + sem_t semaphore; + knot_sem_mutex_t *status_lock; + }; +} knot_sem_t; + +void knot_sem_init(knot_sem_t *sem, unsigned int value); + +void knot_sem_wait(knot_sem_t *sem); + +void knot_sem_post(knot_sem_t *sem); + +void knot_sem_destroy(knot_sem_t *sem); |