| /* Support for ignoring signals. |
| |
| Copyright (C) 2021 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 SCOPED_IGNORE_SIGNAL_H |
| #define SCOPED_IGNORE_SIGNAL_H |
| |
| #include <signal.h> |
| |
| /* RAII class used to ignore a signal in a scope. */ |
| |
| template <int Sig> |
| class scoped_ignore_signal |
| { |
| public: |
| scoped_ignore_signal () |
| { |
| m_osig = signal (Sig, SIG_IGN); |
| } |
| |
| ~scoped_ignore_signal () |
| { |
| signal (Sig, m_osig); |
| } |
| |
| DISABLE_COPY_AND_ASSIGN (scoped_ignore_signal); |
| |
| private: |
| sighandler_t m_osig = nullptr; |
| }; |
| |
| struct scoped_ignore_signal_nop |
| { |
| /* Note, these can't both be "= default", because otherwise the |
| compiler warns that variables of this type are not used. */ |
| scoped_ignore_signal_nop () |
| {} |
| ~scoped_ignore_signal_nop () |
| {} |
| DISABLE_COPY_AND_ASSIGN (scoped_ignore_signal_nop); |
| }; |
| |
| #ifdef SIGPIPE |
| using scoped_ignore_sigpipe = scoped_ignore_signal<SIGPIPE>; |
| #else |
| using scoped_ignore_sigpipe = scoped_ignore_signal_nop; |
| #endif |
| |
| #endif /* SCOPED_IGNORE_SIGNAL_H */ |