1: /* Copyright (C) 1994,95,96,97,99 Free Software Foundation, Inc.
    2:    This file is part of the GNU C Library.
    3: 
    4:    The GNU C Library is free software; you can redistribute it and/or
    5:    modify it under the terms of the GNU Lesser General Public
    6:    License as published by the Free Software Foundation; either
    7:    version 2.1 of the License, or (at your option) any later version.
    8: 
    9:    The GNU C Library is distributed in the hope that it will be useful,
   10:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   11:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   12:    Lesser General Public License for more details.
   13: 
   14:    You should have received a copy of the GNU Lesser General Public
   15:    License along with the GNU C Library; if not, write to the Free
   16:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   17:    02111-1307 USA.  */
   18: 
   19: #include <hurd.h>
   20: #include <hurd/signal.h>
   21: #include <hurd/msg.h>
   22: #include <setjmp.h>
   23: 
   24: /* Handle signal SIGNO in the calling thread.
   25:    If SS is not NULL it is the sigstate for the calling thread;
   26:    SS->lock is held on entry and released before return.  */
   27: 
   28: void
   29: _hurd_raise_signal (struct hurd_sigstate *ss,
   30:                     int signo, const struct hurd_signal_detail *detail)
   31: {
   32:   if (ss == NULL)
   33:     {
   34:       ss = _hurd_self_sigstate ();
   35:       __spin_lock (&ss->lock);
   36:     }
   37: 
   38:   /* Mark SIGNO as pending to be delivered.  */
   39:   __sigaddset (&ss->pending, signo);
   40:   ss->pending_data[signo] = *detail;
   41: 
   42:   __spin_unlock (&ss->lock);
   43: 
   44:   /* Send a message to the signal thread so it will wake up and check for
   45:      pending signals.  This is a generic "poll request" message (SIGNO==0)
   46:      rather than delivering this signal and its detail, because we have
   47:      already marked the signal as pending for the particular thread we
   48:      want.  Generating the signal with an RPC might deliver it to some
   49:      other thread.  */
   50:   __msg_sig_post (_hurd_msgport, 0, 0, __mach_task_self ());
   51: }