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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445/* SPDX-License-Identifier: GPL-2.0+ */#ifndef _TOOLS__RWSEM_H#define _TOOLS__RWSEM_H
#include <pthread.h>
struct rw_semaphore { pthread_rwlock_t lock;};
static inline int init_rwsem(struct rw_semaphore *sem){ return pthread_rwlock_init(&sem->lock, NULL);}
static inline int exit_rwsem(struct rw_semaphore *sem){ return pthread_rwlock_destroy(&sem->lock);}
static inline int down_read(struct rw_semaphore *sem){ return pthread_rwlock_rdlock(&sem->lock);}
static inline int up_read(struct rw_semaphore *sem){ return pthread_rwlock_unlock(&sem->lock);}
static inline int down_write(struct rw_semaphore *sem){ return pthread_rwlock_wrlock(&sem->lock);}
static inline int up_write(struct rw_semaphore *sem){ return pthread_rwlock_unlock(&sem->lock);}
#define down_read_nested(sem, subclass) down_read(sem)#define down_write_nested(sem, subclass) down_write(sem)
#endif /* _TOOLS_RWSEM_H */