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Wake up multiple threads
#include <pthread.h>
int _sleepon_broadcast( sleepon_t * l,
const volatile void * addr );
- l
- A pointer to a sleepon_t that you created by calling
_sleepon_init().
- addr
- The handle that the threads are waiting on.
The value of addr is typically a data structure that controls a
resource.
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The
_sleepon_signal() and
_sleepon_broadcast() functions are very similar:
- _sleepon_signal() wakes up a single thread
that's waiting on the key, addr.
- _sleepon_broadcast() wakes up all threads
that are waiting on the key, addr.
The waiting threads must have used the same sleepon, l and key,
addr, in order to be woken up.
To be woken up, the calling threads must have been locked by
_sleepon_lock().
- 0
- Success.
- ≠0
- Failure.
QNX Neutrino
Safety: | |
Cancellation point |
No |
Interrupt handler |
No |
Signal handler |
No |
Thread |
Yes |
pthread_sleepon_broadcast(),
pthread_sleepon_signal(),
_sleepon_destroy(),
_sleepon_init(),
_sleepon_lock(),
_sleepon_signal(),
_sleepon_unlock()
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