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- /* Block signals used by gdb
- Copyright (C) 2019-2022 Free Software Foundation, Inc.
- This file is part of GDB.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
- This program 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 General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
- #ifndef GDBSUPPORT_BLOCK_SIGNALS_H
- #define GDBSUPPORT_BLOCK_SIGNALS_H
- #include <signal.h>
- #include "gdbsupport/gdb-sigmask.h"
- namespace gdb
- {
- /* This is an RAII class that temporarily blocks the signals needed by
- gdb. This can be used before starting a new thread to ensure that
- this thread starts with the appropriate signals blocked. */
- class block_signals
- {
- public:
- block_signals ()
- {
- #ifdef HAVE_SIGPROCMASK
- sigset_t mask;
- sigemptyset (&mask);
- sigaddset (&mask, SIGINT);
- sigaddset (&mask, SIGCHLD);
- sigaddset (&mask, SIGALRM);
- sigaddset (&mask, SIGWINCH);
- gdb_sigmask (SIG_BLOCK, &mask, &m_old_mask);
- #endif
- }
- ~block_signals ()
- {
- #ifdef HAVE_SIGPROCMASK
- gdb_sigmask (SIG_SETMASK, &m_old_mask, nullptr);
- #endif
- }
- DISABLE_COPY_AND_ASSIGN (block_signals);
- private:
- #ifdef HAVE_SIGPROCMASK
- sigset_t m_old_mask;
- #endif
- };
- }
- #endif /* GDBSUPPORT_BLOCK_SIGNALS_H */
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