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Commit 5a52c9b4 authored by Sasha Levin's avatar Sasha Levin Committed by Ingo Molnar
Browse files

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: default avatarSasha Levin <sasha.levin@oracle.com>
Signed-off-by: default avatarPeter 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: default avatarIngo Molnar <mingo@kernel.org>
parent 878f968e

tools/lib/lockdep/include/liblockdep/rwlock.h

0 → 100644
+86 −0
Original line number Diff line number Diff line 
#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