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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.

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:

       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

       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 [ESRCH] error.

FUTURE DIRECTIONS

       None.

SEE ALSO

       kill(), pthread_self(), raise()

       The Base Definitions volume of POSIX.1‐2008, <signal.h>

COPYRIGHT

       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 Electrical 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 .

       Any typographical or formatting errors that appear in this page are most likely to have  been  introduced
       during   the   conversion  of  the  source  files  to  man  page  format.  To  report  such  errors,  see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group                                   2013                                  PTHREAD_KILL(3POSIX)