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/* SPDX-License-Identifier: GPL-2.0 */
#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, 1, 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, (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, 1, 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, 1, NULL, (unsigned long)_RET_IP_);
return pthread_rwlock_tryrdlock(&lock->rwlock) == 0 ? 1 : 0;
}
static inline int liblockdep_pthread_rwlock_trywrlock(liblockdep_pthread_rwlock_t *lock)
{
lock_acquire(&lock->dep_map, 0, 1, 0, 1, NULL, (unsigned long)_RET_IP_);
return pthread_rwlock_trywrlock(&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_trywrlock liblockdep_pthread_rwlock_trywrlock
#define pthread_rwlock_destroy liblockdep_rwlock_destroy
#endif
#endif
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