diff options
| author | dimitri staessens <[email protected]> | 2016-05-13 19:34:29 +0200 |
|---|---|---|
| committer | dimitri staessens <[email protected]> | 2016-05-13 23:16:16 +0200 |
| commit | 6fa44063041765df752cdcf81ae990e47a37681a (patch) | |
| tree | 829ab9ad671b14d1244cd10b78be0a4af571416e /include | |
| parent | fe4eb1fe61042a08686be54a37f72de72bef70f8 (diff) | |
| download | ouroboros-6fa44063041765df752cdcf81ae990e47a37681a.tar.gz ouroboros-6fa44063041765df752cdcf81ae990e47a37681a.zip | |
lib: implementation of read/write locks
This adds read/write locks, allowing for concurrent reads on the locked
datastructure. This is needed for the fast path.
Diffstat (limited to 'include')
| -rw-r--r-- | include/ouroboros/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | include/ouroboros/rw_lock.h | 41 |
2 files changed, 42 insertions, 0 deletions
diff --git a/include/ouroboros/CMakeLists.txt b/include/ouroboros/CMakeLists.txt index a42c65fd..f1276f51 100644 --- a/include/ouroboros/CMakeLists.txt +++ b/include/ouroboros/CMakeLists.txt @@ -16,6 +16,7 @@ set(HEADER_FILES irm.h list.h logs.h + rw_lock.h shm_ap_rbuff.h shm_du_map.h sockets.h diff --git a/include/ouroboros/rw_lock.h b/include/ouroboros/rw_lock.h new file mode 100644 index 00000000..03eee605 --- /dev/null +++ b/include/ouroboros/rw_lock.h @@ -0,0 +1,41 @@ +/* + * Ouroboros - Copyright (C) 2016 + * + * Read/Write locks + * + * Dimitri Staessens <[email protected]> + * + * 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 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, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef OUROBOROS_RWLOCK_H +#define OUROBOROS_RWLOCK_H + +#include <ouroboros/config.h> +#include <pthread.h> + +typedef struct rw_lock { + pthread_mutex_t lock; + pthread_mutex_t i_lock; + int i; +} rw_lock_t; + +int rw_lock_init(rw_lock_t * lock); +void rw_lock_destroy(rw_lock_t * lock); +int rw_lock_rdlock(rw_lock_t * lock); +int rw_lock_wrlock(rw_lock_t * lock); +int rw_lock_unlock(rw_lock_t * lock); + +#endif /* OUROBOROS_RWLOCK_H */ |