diff options
author | Sasha Levin <sasha.levin@oracle.com> | 2013-06-13 18:41:20 -0400 |
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committer | Ingo Molnar <mingo@kernel.org> | 2013-11-27 11:55:23 +0100 |
commit | 5a52c9b480e09a782618dbf08de57f9ca54c8b49 (patch) | |
tree | f4b770ee8bd631ea9ab565cc65fd134a60f48a74 /tools | |
parent | 878f968eeb852383ff79dc3f181db24e5b52fd75 (diff) | |
download | linux-5a52c9b480e09a782618dbf08de57f9ca54c8b49.tar.bz2 |
liblockdep: Add public headers for pthread_rwlock_t implementation
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>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: torvalds@linux-foundation.org
Link: http://lkml.kernel.org/r/1371163284-6346-6-git-send-email-sasha.levin@oracle.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools')
-rw-r--r-- | tools/lib/lockdep/include/liblockdep/rwlock.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/tools/lib/lockdep/include/liblockdep/rwlock.h b/tools/lib/lockdep/include/liblockdep/rwlock.h new file mode 100644 index 000000000000..a680ab8c2e36 --- /dev/null +++ b/tools/lib/lockdep/include/liblockdep/rwlock.h @@ -0,0 +1,86 @@ +#ifndef _LIBLOCKDEP_RWLOCK_H +#define _LIBLOCKDEP_RWLOCK_H + +#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) +{ + lock_acquire(&lock->dep_map, 0, 0, 2, 2, NULL, (unsigned long)_RET_IP_); + return pthread_rwlock_rdlock(&lock->rwlock); + +} + +static inline int liblockdep_pthread_rwlock_unlock(liblockdep_pthread_rwlock_t *lock) +{ + lock_release(&lock->dep_map, 0, (unsigned long)_RET_IP_); + return pthread_rwlock_unlock(&lock->rwlock); +} + +static inline int liblockdep_pthread_rwlock_wrlock(liblockdep_pthread_rwlock_t *lock) +{ + lock_acquire(&lock->dep_map, 0, 0, 0, 2, NULL, (unsigned long)_RET_IP_); + return pthread_rwlock_wrlock(&lock->rwlock); +} + +static inline int liblockdep_pthread_rwlock_tryrdlock(liblockdep_pthread_rwlock_t *lock) +{ + lock_acquire(&lock->dep_map, 0, 1, 2, 2, NULL, (unsigned long)_RET_IP_); + return pthread_rwlock_tryrdlock(&lock->rwlock) == 0 ? 1 : 0; +} + +static inline int liblockdep_pthread_rwlock_trywlock(liblockdep_pthread_rwlock_t *lock) +{ + lock_acquire(&lock->dep_map, 0, 1, 0, 2, NULL, (unsigned long)_RET_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); +} + +#ifdef __USE_LIBLOCKDEP + +#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 |