int pthread_kill(pthread_t thread, int sig);
The pthread_kill() function shall request that a signal be delivered to
the specified thread.
As in kill(), if sig is zero, error checking shall be performed but no
signal shall actually be sent.
Upon successful completion, the function shall return a value of zero.
Otherwise, the function shall return an error number. If the
pthread_kill() function fails, no signal shall be sent.
The pthread_kill() function shall fail if:
ESRCH No thread could be found corresponding to that specified by the
given thread ID.
EINVAL The value of the sig argument is an invalid or unsupported sig-
The pthread_kill() function shall not return an error code of [EINTR].
The following sections are informative.
The pthread_kill() function provides a mechanism for asynchronously
directing a signal at a thread in the calling process. This could be
used, for example, by one thread to affect broadcast delivery of a sig-
nal to a set of threads.
Note that pthread_kill() only causes the signal to be handled in the
context of the given thread; the signal action (termination or stop-
ping) affects the process as a whole.
kill() , pthread_self() , raise() , the Base Definitions volume of
IEEE/The Open Group 2003 PTHREAD_KILL(P)
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