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PTHREAD_MUTEX_TRYLO... FreeBSD Library Functions Manual	PTHREAD_MUTEX_TRYLO...

NAME
     pthread_mutex_trylock -- attempt to lock a	mutex without blocking

LIBRARY
     Reentrant C Library (libc_r, -lc_r)

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'').

FreeBSD	9.2			 July 30, 1998			   FreeBSD 9.2

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO | STANDARDS

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