| /* Block signals used by gdb |
| |
| Copyright (C) 2019-2021 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 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 */ |