_sleepon_signal()

@@@Wake up a single thread

Synopsis:

#include <@@@unistd.h>

int _sleepong_signal( sleepon_t * l,
                      const volatile void * addr );

Library:

libc

Description:

The _sleepon_signal() and _sleepon_broadcast() are very similar: The functions wake up a single thread (_sleepon_signal()) or all threads (_sleepon_broadcast()) that are waiting on the key, addr.

the waiting threads must have used the same sleepon, l and key value (@@huh?) in order to be woken up.

(@@@can _sleepon_broadcast only wake up _some_ of the threads on error?@@@)

The calling threads must have been locked by _sleepon_lock().

Returns:

0

Success.

=/=0

Failure.

Classification:

@@@NONE

See also: