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Subject[PATCH v3 4/7] liblockdep: public headers for rwlock implementation
Date
Both pthreads and lockdep support dealing with rwlocks, so here's the
liblockdep implementation for those.

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
---
tools/lib/lockdep/include/liblockdep/rwlock.h | 91 +++++++++++++++++++++++++++
1 file changed, 91 insertions(+)
create mode 100644 tools/lib/lockdep/include/liblockdep/rwlock.h

diff --git a/tools/lib/lockdep/include/liblockdep/rwlock.h b/tools/lib/lockdep/include/liblockdep/rwlock.h
new file mode 100644
index 0000000..26f9a68
--- /dev/null
+++ b/tools/lib/lockdep/include/liblockdep/rwlock.h
@@ -0,0 +1,91 @@
+#ifndef _LIBLOCKDEP_RWLOCK_H
+#define _LIBLOCKDEP_RWLOCK_H
+
+#ifdef __USE_LIBLOCKDEP
+
+#include <pthread.h>
+#include "common.h"
+
+struct liblockdep_pthread_rwlock {
+ pthread_rwlock_t rwlock;
+ struct lockdep_map dep_map;
+};
+
+typedef struct liblockdep_pthread_rwlock liblockdep_pthread_rwlock_t;
+
+#define LIBLOCKDEP_PTHREAD_RWLOCK_INITIALIZER(rwl) \
+ (struct liblockdep_pthread_rwlock) { \
+ .rwlock = PTHREAD_RWLOCK_INITIALIZER, \
+ .dep_map = STATIC_LOCKDEP_MAP_INIT(#rwl, &((&(rwl))->dep_map)), \
+}
+
+static inline int __rwlock_init(liblockdep_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 liblockdep_pthread_rwlock_init(lock, attr) \
+({ \
+ static struct lock_class_key __key; \
+ \
+ __rwlock_init((lock), #lock, &__key, (attr)); \
+})
+
+static inline int liblockdep_pthread_rwlock_rdlock(liblockdep_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 liblockdep_pthread_rwlock_unlock(liblockdep_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 liblockdep_pthread_rwlock_wrlock(liblockdep_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 liblockdep_pthread_rwlock_tryrdlock(liblockdep_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 liblockdep_pthread_rwlock_trywlock(liblockdep_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 liblockdep_rwlock_destroy(liblockdep_pthread_rwlock_t *lock)
+{
+ return pthread_rwlock_destroy(&lock->rwlock);
+}
+
+#define pthread_rwlock_t liblockdep_pthread_rwlock_t
+#define pthread_rwlock_init liblockdep_pthread_rwlock_init
+#define pthread_rwlock_rdlock liblockdep_pthread_rwlock_rdlock
+#define pthread_rwlock_unlock liblockdep_pthread_rwlock_unlock
+#define pthread_rwlock_wrlock liblockdep_pthread_rwlock_wrlock
+#define pthread_rwlock_tryrdlock liblockdep_pthread_rwlock_tryrdlock
+#define pthread_rwlock_trywlock liblockdep_pthread_rwlock_trywlock
+#define pthread_rwlock_destroy liblockdep_rwlock_destroy
+
+#endif
+
+#endif
--
1.8.1.2


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