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36 .Nd wake up the suspended thread
42 .Fn thr_wake "long id"
45 This function is intended for implementing threading.
46 Normal applications should use
47 .Xr pthread_cond_timedwait 3
49 .Xr pthread_cond_broadcast 3
50 for typical safe suspension with cooperation of the thread
52 .Xr pthread_suspend_np 3
54 .Xr pthread_resume_np 3
55 in some specific situations, instead.
58 Passing the thread identifier of the calling thread
65 sets a thread's flag to cause the next signal-interruptible sleep
66 of that thread in the kernel to fail immediately with the
69 The flag is cleared by an interruptible sleep attempt or by a call to
71 This is used by the system threading library to implement cancellation.
75 is not equal to the current thread identifier, the specified thread is
76 woken up if suspended by the
79 If the thread is not suspended at the time of the
81 call, the wake is remembered and the next attempt of the thread to
82 suspend itself with the
84 results in immediate return with success.
85 Only one wake is remembered.
91 operation returns these errors:
94 The specified thread was not found or does not belong to the process
95 of the calling thread.
101 .Xr pthread_cancel 3 ,
102 .Xr pthread_resume_np 3 ,
103 .Xr pthread_suspend_np 3
107 system call is non-standard and is used by
116 system call first appeared in