1 .\" Copyright (c) 1996-1998 John Birrell <jb@cimlogic.com.au>.
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38 .Nm pthread_peekjoin_np ,
39 .Nm pthread_timedjoin_np
40 .Nd inspect thread termination state
46 .Fn pthread_join "pthread_t thread" "void **value_ptr"
49 .Fo pthread_peekjoin_np
50 .Fa "pthread_t thread"
51 .Fa "void **value_ptr"
54 .Fo pthread_timedjoin_np
55 .Fa "pthread_t thread"
56 .Fa "void **value_ptr"
57 .Fa "const struct timespec *abstime"
62 function suspends execution of the calling thread until the target
64 terminates unless the target
66 has already terminated.
68 On return from a successful
72 argument, the value passed to
74 by the terminating thread is stored in the location referenced by
78 returns successfully, the target thread has been terminated.
80 of multiple simultaneous calls to
82 specifying the same target thread are undefined.
85 is cancelled, then the target thread is not detached.
88 .Fn pthread_timedjoin_np
89 function is equivalent to the
91 function except it will return
93 if target thread does not exit before specified absolute time passes.
96 .Fn pthread_peekjoin_np
97 only peeks into the exit status of the specified thread.
98 If the thread has not exited, the
101 Otherwise, zero is returned and the thread exit value is optionally stored
104 The target thread is left unjoined and can be used as an argument for
107 family of functions again.
109 A thread that has exited but remains unjoined counts against
110 [_POSIX_THREAD_THREADS_MAX].
112 If successful, the described functions return zero.
113 Otherwise an error number is returned to indicate the error or
118 .Fn pthread_peekjoin_np ,
120 .Fn pthread_timedjoin_np
121 functions will fail if:
124 The implementation has detected that the value specified by
126 does not refer to a joinable thread.
128 No thread could be found corresponding to that specified by the given
132 A deadlock was detected or the value of
134 specifies the calling thread.
136 The implementation detected that another caller is already waiting on
141 .Fn pthread_timedjoin_np
142 function will fail if:
145 The specified absolute time passed while
146 .Fn pthread_timedjoin_np
147 waited for thread exit.
151 .Fn pthread_peekjoin_np
152 function will also fail if:
155 The specified thread has not yet exited.
166 .Fn pthread_timedjoin_np
169 extension which first appeared in
171 Another extension, the
172 .Fn pthread_peekjoin_np
173 function, first appearead in