text: /* SPDX-License-Identifier: GPL-2.0 */
  #ifndef _LIBLOCKDEP_MUTEX_H
  #define _LIBLOCKDEP_MUTEX_H
  
  #include <pthread.h>
  #include "common.h"
  
  struct liblockdep_pthread_mutex {
  	pthread_mutex_t mutex;
  	struct lockdep_map dep_map;
  };
  
  typedef struct liblockdep_pthread_mutex liblockdep_pthread_mutex_t;
  
  #define LIBLOCKDEP_PTHREAD_MUTEX_INITIALIZER(mtx)			\
  		(const struct liblockdep_pthread_mutex) {		\
  	.mutex = PTHREAD_MUTEX_INITIALIZER,				\
  	.dep_map = STATIC_LOCKDEP_MAP_INIT(#mtx, &((&(mtx))->dep_map)),	\
  }
  
  static inline int __mutex_init(liblockdep_pthread_mutex_t *lock,
  				const char *name,
  				struct lock_class_key *key,
  				const pthread_mutexattr_t *__mutexattr)
  {
  	lockdep_init_map(&lock->dep_map, name, key, 0);
  	return pthread_mutex_init(&lock->mutex, __mutexattr);
  }
  
  #define liblockdep_pthread_mutex_init(mutex, mutexattr)		\
  ({								\
  	static struct lock_class_key __key;			\
  								\
  	__mutex_init((mutex), #mutex, &__key, (mutexattr));	\
  })
  
  static inline int liblockdep_pthread_mutex_lock(liblockdep_pthread_mutex_t *lock)
  {
  	lock_acquire(&lock->dep_map, 0, 0, 0, 1, NULL, (unsigned long)_RET_IP_);
  	return pthread_mutex_lock(&lock->mutex);
  }
  
  static inline int liblockdep_pthread_mutex_unlock(liblockdep_pthread_mutex_t *lock)
  {
  	lock_release(&lock->dep_map, 0, (unsigned long)_RET_IP_);
  	return pthread_mutex_unlock(&lock->mutex);
  }
  
  static inline int liblockdep_pthread_mutex_trylock(liblockdep_pthread_mutex_t *lock)
  {
  	lock_acquire(&lock->dep_map, 0, 1, 0, 1, NULL, (unsigned long)_RET_IP_);
  	return pthread_mutex_trylock(&lock->mutex) == 0 ? 1 : 0;
  }
  
  static inline int liblockdep_pthread_mutex_destroy(liblockdep_pthread_mutex_t *lock)
  {
  	return pthread_mutex_destroy(&lock->mutex);
  }
  
  #ifdef __USE_LIBLOCKDEP
  
  #define pthread_mutex_t         liblockdep_pthread_mutex_t
  #define pthread_mutex_init      liblockdep_pthread_mutex_init
  #define pthread_mutex_lock      liblockdep_pthread_mutex_lock
  #define pthread_mutex_unlock    liblockdep_pthread_mutex_unlock
  #define pthread_mutex_trylock   liblockdep_pthread_mutex_trylock
  #define pthread_mutex_destroy   liblockdep_pthread_mutex_destroy
  
  #endif
  
  #endif
  