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glibc/hurd/hurd-raise.c
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/* Copyright (C) 1994-2016 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 Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 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 | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#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. */ | |
int | |
_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. */ | |
return __msg_sig_post (_hurd_msgport, 0, 0, __mach_task_self ()); | |
} |