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PTHREAD_RWLOCK_UNLO... FreeBSD Library Functions Manual PTHREAD_RWLOCK_UNLO... NAME pthread_rwlock_unlock -- release a read/write lock LIBRARY POSIX Threads Library (libpthread, -lpthread) SYNOPSIS #include <pthread.h> int pthread_rwlock_unlock(pthread_rwlock_t *lock); DESCRIPTION The pthread_rwlock_unlock() function is used to release the read/write lock previously obtained by pthread_rwlock_rdlock(), pthread_rwlock_wrlock(), pthread_rwlock_tryrdlock(), or pthread_rwlock_trywrlock(). RETURN VALUES If successful, the pthread_rwlock_unlock() function will return zero. Otherwise an error number will be returned to indicate the error. The results are undefined if lock is not held by the calling thread. ERRORS The pthread_rwlock_unlock() function may fail if: [EINVAL] The value specified by lock is invalid. [EPERM] The current thread does not own the read/write lock. SEE ALSO pthread_rwlock_rdlock(3), pthread_rwlock_wrlock(3) STANDARDS The pthread_rwlock_unlock() function is expected to conform to Version 2 of the Single UNIX Specification ("SUSv2"). HISTORY The pthread_rwlock_unlock() function first appeared in FreeBSD 3.0. FreeBSD 13.0 August 4, 1998 FreeBSD 13.0
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO | STANDARDS | HISTORY
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