mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-24 02:03:35 +08:00
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.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#include <hurd.h>
|
|
#include <hurd/signal.h>
|
|
#include <hurd/msg.h>
|
|
#include <setjmp.h>
|
|
|
|
/* Handle signal SIGNO in the calling thread.
|
|
If SS is not NULL it is the sigstate for the calling thread;
|
|
SS->lock is held on entry and released before return. */
|
|
|
|
void
|
|
_hurd_raise_signal (struct hurd_sigstate *ss,
|
|
int signo, const struct hurd_signal_detail *detail)
|
|
{
|
|
if (ss == NULL)
|
|
{
|
|
ss = _hurd_self_sigstate ();
|
|
__spin_lock (&ss->lock);
|
|
}
|
|
|
|
/* Mark SIGNO as pending to be delivered. */
|
|
__sigaddset (&ss->pending, signo);
|
|
ss->pending_data[signo] = *detail;
|
|
|
|
__spin_unlock (&ss->lock);
|
|
|
|
/* Send a message to the signal thread so it will wake up and check for
|
|
pending signals. This is a generic "poll request" message (SIGNO==0)
|
|
rather than delivering this signal and its detail, because we have
|
|
already marked the signal as pending for the particular thread we
|
|
want. Generating the signal with an RPC might deliver it to some
|
|
other thread. */
|
|
__msg_sig_post (_hurd_msgport, 0, 0, __mach_task_self ());
|
|
}
|