lib, irmd, ipcp: robust mutexes

Update to POSIX 200112L to allow use of robust mutexes in the
shm_du_map. Removed the implementation of the rw_lock in favor of
pthread_rwlock_t.

Placeholder for the shm_du_map_sanitize function.

1 files changed, 0 insertions, 127 deletions

diff --git a/src/lib/rw_lock.c b/src/lib/rw_lock.c
deleted file mode 100644
index ba285694..00000000
--- a/src/lib/rw_lock.c
+++ /dev/null
@@ -1,127 +0,0 @@
-/*
- * 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.
- */
-
-#include <ouroboros/rw_lock.h>
-
-int rw_lock_init(rw_lock_t * lock)
-{
-        if (lock == NULL)
-                return -1;
-
-        pthread_mutex_init(&lock->lock, NULL);
-        pthread_mutex_init(&lock->i_lock, NULL);
-        lock->i = 0;
-
-        return 0;
-}
-
-void rw_lock_destroy(rw_lock_t * lock)
-{
-        if (lock == NULL)
-                return;
-
-        pthread_mutex_destroy(&lock->lock);
-        pthread_mutex_destroy(&lock->i_lock);
-        lock->i = -1;
-}
-
-int rw_lock_rdlock(rw_lock_t * lock)
-{
-        int ret = 0;
-
-        if (lock == NULL)
-                return -1;
-
-        pthread_mutex_lock(&lock->i_lock);
-
-        if (lock->i < 0) {
-                pthread_mutex_unlock(&lock->i_lock);
-                return -1;
-        }
-
-        if (lock->i == 0)
-                ret = pthread_mutex_lock(&lock->lock);
-
-        ++(lock->i);
-
-        pthread_mutex_unlock(&lock->i_lock);
-
-        return ret;
-}
-
-int rw_lock_wrlock(rw_lock_t * lock)
-{
-        int ret = 0;
-
-        if (lock == NULL)
-                return -1;
-
-        pthread_mutex_lock(&lock->i_lock);
-
-        if (lock->i < 0) {
-                pthread_mutex_unlock(&lock->i_lock);
-                return -1;
-        }
-
-        pthread_mutex_unlock(&lock->i_lock);
-
-        while (1) {
-                pthread_mutex_lock(&lock->i_lock);
-
-                if (lock->i == 0) {
-                        ++(lock->i);
-                        ret = pthread_mutex_lock(&lock->lock);
-                        pthread_mutex_unlock(&lock->i_lock);
-                        break;
-                }
-
-                pthread_mutex_unlock(&lock->i_lock);
-
-                sched_yield();
-        }
-
-        return ret;
-}
-
-int rw_lock_unlock(rw_lock_t * lock)
-{
-        int ret = 0;
-
-        if (lock == NULL)
-                return -1;
-
-        pthread_mutex_lock(&lock->i_lock);
-
-        if (lock->i < 0) {
-                pthread_mutex_unlock(&lock->i_lock);
-                return -1;
-        }
-
-        --(lock->i);
-
-        if (lock->i == 0)
-                ret = pthread_mutex_unlock(&lock->lock);
-
-        pthread_mutex_unlock(&lock->i_lock);
-
-        return ret;
-}