NAME

       pthread_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 signal 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 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.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       kill() , 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 .