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PTHREAD_MUTEX_TIME... DragonFly Library Functions Manual PTHREAD_MUTEX_TIME...
pthread_mutex_timedlock -- lock a mutex without blocking indefinitely
POSIX Threads Library (libpthread, -lpthread)
pthread_mutex_timedlock(pthread_mutex_t * restrict mutex,
const struct timespec * restrict abs_timeout);
The pthread_mutex_timedlock() function will lock mutex. If it is already
locked the calling thread will block until the mutex becomes available or
the timeout, specified by abs_timeout, expires. The time of the timeout
is an absolute time and is not relative to the current time.
If successful, pthread_mutex_timedlock() will return zero, otherwise an
error number will be returned to indicate the error.
The pthread_mutex_timedlock() function will fail if:
[EINVAL] The mutex was created with the protocol attribute
having the value PTHREAD_PRIO_PROTECT and the calling
thread's priority is higher than the mutex's current
[EINVAL] The process or thread would have blocked, and
abs_timeout specified a nanosecond value less than
zero or greater than or equal to 1 billion.
[EINVAL] The mutex parameter is invalid.
[ETIMEDOUT] The mutex could not be locked before the timeout
[EAGAIN] The mutex could not be acquired because the maximum
number of recursive locks for the mutex has been
[EDEADLK] The current thread already owns the mutex.
The pthread_mutex_timedlock() function is expected to conform to ISO/IEC
DragonFly 5.1 February 22, 2018 DragonFly 5.1