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pthread_kill(3p) [posix man page]

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 correspond-
       ing 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  stop-
       ping) 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 Technol-
       ogy  --	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 Stan-
       dard 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(3P)

Check Out this Related Man Page

KILLPG(3P)						     POSIX Programmer's Manual							KILLPG(3P)

PROLOG

       This  manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (consult the correspond-
       ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

NAME

       killpg -- send a signal to a process group

SYNOPSIS

       #include <signal.h>

       int killpg(pid_t pgrp, int sig);

DESCRIPTION

       The killpg() function shall send the signal specified by sig to the process group specified by pgrp.

       If pgrp is greater than 1, killpg(pgrp, sig) shall be equivalent to kill(-pgrp, sig). If pgrp is less than or equal to 1, the  behavior	of
       killpg() is undefined.

RETURN VALUE

       Refer to kill().

ERRORS

       Refer to kill().

       The following sections are informative.

EXAMPLES

   Sending a Signal to All Other Members of a Process Group
       The  following  example shows how the calling process could send a signal to all other members of its process group. To prevent itself from
       receiving the signal it first makes itself immune to the signal by ignoring it.

	   #include <signal.h>
	   #include <unistd.h>
	   ...
	       if (signal(SIGUSR1, SIG_IGN) == SIG_ERR)
		   /* Handle error */;

	       if (killpg(getpgrp(), SIGUSR1) == -1)
		   /* Handle error */;"

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       getpgid(), getpid(), kill(), 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 Technol-
       ogy  --	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 Stan-
       dard 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								KILLPG(3P)
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