PTHREAD_KILL(3P) POSIX Programmer's Manual PTHREAD_KILL(3P)PROLOG
This manual page is part of the POSIX Programmer's Manual. The Linux
implementation of this interface may differ (consult the corresponding
Linux manual page for details of Linux behavior), or the interface may
not be implemented on Linux.
NAMEpthread_kill — send a signal to a thread
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:
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.
If an implementation detects use of a thread ID after the end of its
lifetime, it is recommended that the function should fail and report an
SEE ALSOkill(), pthread_self(), raise()
The Base Definitions volume of POSIX.1‐2008, <signal.h>
Portions of this text are reprinted and reproduced in electronic form
from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
-- Portable Operating System Interface (POSIX), The Open Group Base
Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
cal and Electronics Engineers, Inc and The Open Group. (This is
POSIX.1-2008 with the 2013 Technical Corrigendum 1 applied.) In the
event of any discrepancy between this version and the original IEEE and
The Open Group Standard, the original IEEE and The Open Group Standard
is the referee document. The original Standard can be obtained online
at http://www.unix.org/online.html .
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IEEE/The Open Group 2013 PTHREAD_KILL(3P)