PTHREAD_MUTEX_TRYLOCK man page on PC-BSD
[printable version]
PTHREAD_MUTEX_TRYLOCK(3) BSD Library Functions Manual PTHREAD_MUTEX_TRYLOCK(3)
NAME
pthread_mutex_trylock — attempt to lock a mutex without blocking
LIBRARY
POSIX Threads Library (libpthread, -lpthread)
SYNOPSIS
#include <pthread.h>
int
pthread_mutex_trylock(pthread_mutex_t *mutex);
DESCRIPTION
The pthread_mutex_trylock() function locks mutex. If the mutex is
already locked, pthread_mutex_trylock() will not block waiting for the
mutex, but will return an error condition.
RETURN VALUES
If successful, pthread_mutex_trylock() will return zero, otherwise an
error number will be returned to indicate the error.
ERRORS
The pthread_mutex_trylock() function will fail if:
[EINVAL] The value specified by mutex is invalid.
[EBUSY] Mutex is already locked.
SEE ALSO
pthread_mutex_destroy(3), pthread_mutex_init(3), pthread_mutex_lock(3),
pthread_mutex_unlock(3)
STANDARDS
The pthread_mutex_trylock() function conforms to ISO/IEC 9945-1:1996
(“POSIX.1”).
BSD July 30, 1998 BSD
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