PTHREAD_KILL(P) POSIX Programmer's Manual PTHREAD_KILL(P)
pthread_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
As in kill(), if sig is zero, error checking shall be performed but no signal shall actu-
ally 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 signal number.
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 signal 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 stopping) affects the process as a whole.
kill() , pthread_self() , raise() , the Base Definitions volume of IEEE Std 1003.1-2001,
Portions of this text are reprinted and reproduced in electronic form from IEEE Std
1003.1, 2003 Edition, Standard for Information Technology -- Portable Operating System
Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by
the Institute of Electrical and Electronics Engineers, Inc and The Open Group. 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 orig-
inal Standard can be obtained online at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 PTHREAD_KILL(P)