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813de3b38e
* hurd/hurd-raise.c (_hurd_raise_signal): Send "poll request" msg_sig_post RPC (with SIGNO=0), rather than generating signal (again) with the RPC.
52 lines
1.9 KiB
C
52 lines
1.9 KiB
C
/* Copyright (C) 1994,95,96,97,99 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <hurd.h>
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#include <hurd/signal.h>
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#include <hurd/msg.h>
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#include <setjmp.h>
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/* Handle signal SIGNO in the calling thread.
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If SS is not NULL it is the sigstate for the calling thread;
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SS->lock is held on entry and released before return. */
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void
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_hurd_raise_signal (struct hurd_sigstate *ss,
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int signo, const struct hurd_signal_detail *detail)
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{
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if (ss == NULL)
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{
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ss = _hurd_self_sigstate ();
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__spin_lock (&ss->lock);
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}
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/* Mark SIGNO as pending to be delivered. */
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__sigaddset (&ss->pending, signo);
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ss->pending_data[signo] = *detail;
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__spin_unlock (&ss->lock);
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/* Send a message to the signal thread so it will wake up and check for
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pending signals. This is a generic "poll request" message (SIGNO==0)
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rather than delivering this signal and its detail, because we have
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already marked the signal as pending for the particular thread we
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want. Generating the signal with an RPC might deliver it to some
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other thread. */
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__msg_sig_post (_hurd_msgport, 0, 0, __mach_task_self ());
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}
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