pthread_sleepon_lock()

Lock the pthread_sleepon* functions

Synopsis:

#include <pthread.h>

int pthread_sleepon_lock( void );

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The pthread_sleepon_lock() function calls pthread_mutex_lock() on a mutex associated with the pthread_sleepon* class of functions. You should call this function before testing conditions that determine whether you need to call pthread_sleepon_wait() , pthread_sleepon_signal() , or pthread_sleepon_broadcast() . This mutex prevents other threads from changing the conditions between the time you examine and act upon them.

This function may be implemented as a simple macro.

Returns:

EOK
Success.
EDEADLK
The calling thread already owns the controlling mutex.
EAGAIN
On the first use of pthread_sleepon_lock(), all kernel mutex objects were in use.

Classification:

QNX Neutrino

Safety:  
Cancellation point Yes
Interrupt handler No
Signal handler Yes
Thread Yes

Last modified: 2013-12-23

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