_lwp_cond_signal(2) System Calls _lwp_cond_signal(2)
_lwp_cond_signal, _lwp_cond_broadcast - signal a condition variable
int _lwp_cond_signal(lwp_cond_t *cvp);
int _lwp_cond_broadcast(lwp_cond_t *cvp);
The _lwp_cond_signal() function unblocks one LWP that is blocked on the
LWP condition variable pointed to by cvp.
The _lwp_cond_broadcast() function unblocks all LWPs that are blocked
on the LWP condition variable pointed to by cvp.
If no LWPs are blocked on the LWP condition variable, then
_lwp_cond_signal() and _lwp_cond_broadcast() have no effect.
Both functions should be called under the protection of the same LWP
mutex lock that is used with the LWP condition variable being sig-
naled. Otherwise, the condition variable may be signalled between the
test of the associated condition and blocking in _lwp_cond_wait(). This
can cause an infinite wait.
Upon successful completion, 0 is returned. A non-zero value indicates
The _lwp_cond_signal() and _lwp_cond_broadcast() functions will fail
EINVAL The cvp argument points to an invalid LWP condition
EFAULT The cvp argument points to an invalid address.
SunOS 5.10 8 Dec 1995 _lwp_cond_signal(2)