Both pthreads and lockdep support dealing with rwlocks, so here's the
liblock implementation for those.
Signed-off-by: Sasha Levin <sasha.le...@oracle.com>
---
tools/lib/liblock/include/liblock/rwlock.h | 78 ++++++++++++++++++++++++++++++
1 file changed, 78 insertions(+)
create mode 100644 tools/lib/liblock/include/liblock/rwlock.h
diff --git a/tools/lib/liblock/include/liblock/rwlock.h
b/tools/lib/liblock/include/liblock/rwlock.h
new file mode 100644
index 0000000..0dbe879
--- /dev/null
+++ b/tools/lib/liblock/include/liblock/rwlock.h
@@ -0,0 +1,78 @@
+#ifndef _LIBLOCK_RWLOCK_H
+#define _LIBLOCK_RWLOCK_H
+
+#include <pthread.h>
+#include "common.h"
+
+struct liblock_pthread_rwlock {
+ pthread_rwlock_t rwlock;
+ struct lockdep_map dep_map;
+};
+
+typedef struct liblock_pthread_rwlock liblock_pthread_rwlock_t;
+
+#define LIBLOCK_PTHREAD_RWLOCK_INITIALIZER(rwl)
\
+ (struct liblock_pthread_rwlock) { \
+ .rwlock = PTHREAD_RWLOCK_INITIALIZER, \
+ .dep_map = STATIC_LOCKDEP_MAP_INIT(#rwl, &((&(rwl))->dep_map)), \
+}
+
+static inline int __rwlock_init(liblock_pthread_rwlock_t *lock,
+ const char *name,
+ struct lock_class_key *key,
+ const pthread_rwlockattr_t *attr)
+{
+ lockdep_init_map(&lock->dep_map, name, key, 0);
+
+ return pthread_rwlock_init(&lock->rwlock, attr);
+}
+
+#define liblock_pthread_rwlock_init(lock, attr) \
+({ \
+ static struct lock_class_key __key; \
+ \
+ __rwlock_init((lock), #lock, &__key, (attr)); \
+})
+
+static inline int liblock_pthread_rwlock_rdlock(liblock_pthread_rwlock_t *lock)
+{
+ void *ip = _THIS_IP_;
+ lock_acquire(&lock->dep_map, 0, 0, 2, 2, NULL, (unsigned long)ip);
+ return pthread_rwlock_rdlock(&lock->rwlock);
+
+}
+
+static inline int liblock_pthread_rwlock_unlock(liblock_pthread_rwlock_t *lock)
+{
+ void *ip = _THIS_IP_;
+ lock_release(&lock->dep_map, 0, (unsigned long)ip);
+ return pthread_rwlock_unlock(&lock->rwlock);
+}
+
+static inline int liblock_pthread_rwlock_wrlock(liblock_pthread_rwlock_t *lock)
+{
+ void *ip = _THIS_IP_;
+ lock_acquire(&lock->dep_map, 0, 0, 0, 2, NULL, (unsigned long)ip);
+ return pthread_rwlock_wrlock(&lock->rwlock);
+}
+
+static inline int liblock_pthread_rwlock_tryrdlock(liblock_pthread_rwlock_t
*lock)
+{
+ void *ip = _THIS_IP_;
+ lock_acquire(&lock->dep_map, 0, 1, 2, 2, NULL, (unsigned long)ip);
+ return pthread_rwlock_tryrdlock(&lock->rwlock) == 0 ? 1 : 0;
+}
+
+static inline int liblock_pthread_rwlock_trywlock(liblock_pthread_rwlock_t
*lock)
+{
+ void *ip = _THIS_IP_;
+ lock_acquire(&lock->dep_map, 0, 1, 0, 2, NULL, (unsigned long)ip);
+ return pthread_rwlock_trywlock(&lock->rwlock) == 0 ? 1 : 0;
+}
+
+static inline int liblock_rwlock_destroy(liblock_pthread_rwlock_t *lock)
+{
+ return pthread_rwlock_destroy(&lock->rwlock);
+}
+
+#endif
--
1.8.1.1
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