pthread_mutex_trylock man page on FreeBSD

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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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