PTHREAD_KILL(P) POSIX Programmer's Manual PTHREAD_KILL(P)NAMEpthread_kill - send a signal to a thread
SYNOPSIS
#include <signal.h>
int pthread_kill(pthread_t thread, int sig);
DESCRIPTION
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.
RETURN VALUE
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.
ERRORS
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‐
nal number.
The pthread_kill() function shall not return an error code of [EINTR].
The following sections are informative.
EXAMPLES
None.
APPLICATION USAGE
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.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSOkill() , pthread_self() , raise() , the Base Definitions volume of
IEEE Std 1003.1-2001, <signal.h>
COPYRIGHT
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 original Standard can be obtained online
at http://www.opengroup.org/unix/online.html .
IEEE/The Open Group 2003 PTHREAD_KILL(P)
