vasilito
facf0c92e0
Red Bear OS is a full fork. All sources must be available from git clone with zero network access. Removed gitignore rules that excluded fetched source trees under recipes/*/source/, local/recipes/kde/*/source/, local/recipes/qt/*/source/, and vendor source trees. Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded. 127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt frameworks, mesa, wayland, DRM drivers, and every other recipe source.
100 lines
2.7 KiB
C
100 lines
2.7 KiB
C
/* Expression evaluation for plural form selection.
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Copyright (C) 2000-2003, 2005, 2019-2020 Free Software Foundation, Inc.
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Written by Ulrich Drepper <drepper@cygnus.com>, 2000.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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/* Specification. */
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#include "plural-eval.h"
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#include <stddef.h>
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#include <signal.h>
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#include "plural-exp.h"
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#define STATIC /*extern*/
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/* Include the expression evaluation code from libintl, this time with
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'extern' linkage. */
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#include "eval-plural.h"
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/* Exit point. Must be set before calling install_sigfpe_handler(). */
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sigjmp_buf sigfpe_exit;
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#if USE_SIGINFO
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/* Additional information that is set before sigfpe_exit is invoked. */
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int volatile sigfpe_code;
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/* Signal handler called in case of arithmetic exception (e.g. division
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by zero) during plural_eval. */
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static _GL_ASYNC_SAFE void
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sigfpe_handler (int sig, siginfo_t *sip, void *scp)
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{
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sigfpe_code = sip->si_code;
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/* This handler is invoked on the thread that caused the SIGFPE, that is,
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the thread that is doing plural evaluation. Therefore it's OK to use
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siglongjmp. */
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siglongjmp (sigfpe_exit, 1);
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}
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#else
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/* Signal handler called in case of arithmetic exception (e.g. division
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by zero) during plural_eval. */
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static _GL_ASYNC_SAFE void
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sigfpe_handler (int sig)
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{
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/* This handler is invoked on the thread that caused the SIGFPE, that is,
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the thread that is doing plural evaluation. Therefore it's OK to use
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siglongjmp. */
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siglongjmp (sigfpe_exit, 1);
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}
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#endif
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void
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install_sigfpe_handler (void)
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{
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#if USE_SIGINFO
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struct sigaction action;
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action.sa_sigaction = sigfpe_handler;
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action.sa_flags = SA_SIGINFO;
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sigemptyset (&action.sa_mask);
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sigaction (SIGFPE, &action, (struct sigaction *) NULL);
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#else
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signal (SIGFPE, sigfpe_handler);
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#endif
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}
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void
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uninstall_sigfpe_handler (void)
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{
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#if USE_SIGINFO
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struct sigaction action;
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action.sa_handler = SIG_DFL;
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action.sa_flags = 0;
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sigemptyset (&action.sa_mask);
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sigaction (SIGFPE, &action, (struct sigaction *) NULL);
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#else
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signal (SIGFPE, SIG_DFL);
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#endif
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}
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