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



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

NNAAMMEE
       killpg -- send a signal to a process group

SSYYNNOOPPSSIISS
       #include <signal.h>

       int killpg(pid_t _p_g_r_p, int _s_i_g);

DDEESSCCRRIIPPTTIIOONN
       The _k_i_l_l_p_g() function shall send the signal specified by _s_i_g to the
       process group specified by _p_g_r_p.

       If _p_g_r_p is greater than 1, _k_i_l_l_p_g(_p_g_r_p, _s_i_g) shall be equivalent to
       _k_i_l_l(-_p_g_r_p, _s_i_g). If _p_g_r_p is less than or equal to 1, the behavior of
       _k_i_l_l_p_g() is undefined.

RREETTUURRNN VVAALLUUEE
       Refer to _k_i_l_l().

EERRRROORRSS
       Refer to _k_i_l_l().

       _T_h_e _f_o_l_l_o_w_i_n_g _s_e_c_t_i_o_n_s _a_r_e _i_n_f_o_r_m_a_t_i_v_e_.

EEXXAAMMPPLLEESS
   SSeennddiinngg aa SSiiggnnaall ttoo AAllll OOtthheerr MMeemmbbeerrss ooff aa PPrroocceessss GGrroouupp
       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 */;"

AAPPPPLLIICCAATTIIOONN UUSSAAGGEE
       None.

RRAATTIIOONNAALLEE
       None.

FFUUTTUURREE DDIIRREECCTTIIOONNSS
       None.

SSEEEE AALLSSOO
       _g_e_t_p_g_i_d(), _g_e_t_p_i_d(), _k_i_l_l(), _r_a_i_s_e()

       The Base Definitions volume of POSIX.1-2017, <<ssiiggnnaall..hh>>

CCOOPPYYRRIIGGHHTT
       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1-2017, Standard for Information Technology --
       Portable Operating System Interface (POSIX), The Open Group Base
       Specifications Issue 7, 2018 Edition, Copyright (C) 2018 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 .

       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                  2017                            KILLPG(3)
