| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef __WINDOWS_CTRLHANDLER_HPP__ |
| #define __WINDOWS_CTRLHANDLER_HPP__ |
| |
| #include <functional> |
| #include <mutex> |
| |
| #include <stout/synchronized.hpp> |
| |
| namespace os { |
| namespace internal { |
| |
| #define SIGUSR1 100 |
| |
| // Not using extern as this is used only by the executable. The signal |
| // handler should be configured once. Configuring it multiple times will |
| // overwrite any previous handlers. |
| static std::function<void(int, int)>* signaledWrapper = nullptr; |
| |
| inline BOOL WINAPI CtrlHandler(DWORD fdwCtrlType) |
| { |
| switch (fdwCtrlType) { |
| // Handle the CTRL-C signal. |
| case CTRL_C_EVENT: |
| case CTRL_CLOSE_EVENT: |
| case CTRL_BREAK_EVENT: |
| case CTRL_LOGOFF_EVENT: |
| case CTRL_SHUTDOWN_EVENT: { |
| if (signaledWrapper != nullptr) { |
| (*signaledWrapper)(SIGUSR1, 0); |
| return TRUE; |
| } |
| } |
| default: { |
| return FALSE; |
| } |
| } |
| } |
| |
| |
| inline int installCtrlHandler(const std::function<void(int, int)>* signal) |
| { |
| // NOTE: We only expect this function to be called multiple |
| // times inside tests and `mesos-local`. |
| |
| static std::mutex mutex; |
| |
| synchronized (mutex) { |
| if (signaledWrapper != nullptr) { |
| delete signaledWrapper; |
| } |
| |
| if (signal != nullptr) { |
| signaledWrapper = new std::function<void(int, int)>(*signal); |
| return SetConsoleCtrlHandler(CtrlHandler, TRUE); |
| } else { |
| delete signaledWrapper; |
| signaledWrapper = nullptr; |
| return SetConsoleCtrlHandler(CtrlHandler, FALSE); |
| } |
| } |
| } |
| |
| } // namespace internal { |
| |
| } // namespace os { |
| |
| #endif // __WINDOWS_CTRLHANDLER_HPP__ |