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32 .Nd send a signal to a specified thread
39 .Fn pthread_kill "pthread_t thread" "int sig"
43 function sends a signal, specified by
45 to a thread, specified by
49 is 0, error checking is performed, but no signal is actually sent.
54 Otherwise, an error number is returned.
58 function will fail if:
62 is an invalid thread ID.
65 is an invalid or unsupported signal number.