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Diffstat (limited to 'src/appMain/low_voltage_signals_handler.h')
-rw-r--r-- | src/appMain/low_voltage_signals_handler.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/src/appMain/low_voltage_signals_handler.h b/src/appMain/low_voltage_signals_handler.h new file mode 100644 index 0000000000..8c139c6836 --- /dev/null +++ b/src/appMain/low_voltage_signals_handler.h @@ -0,0 +1,132 @@ +/* + * Copyright (c) 2018, Ford Motor Company + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * Redistributions in binary form must reproduce the above copyright notice, + * this list of conditions and the following + * disclaimer in the documentation and/or other materials provided with the + * distribution. + * + * Neither the name of the Ford Motor Company nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef SRC_APPMAIN_LOW_VOLTAGE_SIGNALS_HANDLER_H_ +#define SRC_APPMAIN_LOW_VOLTAGE_SIGNALS_HANDLER_H_ + +#include <unistd.h> +#include <memory> +#include "utils/threads/thread_delegate.h" +#include "utils/threads/thread.h" + +namespace main_namespace { + +typedef struct LowVoltageSignalsOffset { + int low_voltage_signal_offset; + int wake_up_signal_offset; + int ignition_off_signal_offset; +} LowVoltageSignalsOffset; + +class LifeCycle; +class NotificationThreadDelegate; + +/** + * @brief Class which handles real-time POSIX signals + * dedicated for LOW VOLTAGE functionality + */ +class LowVoltageSignalsHandler { + public: + /** + * @brief Constructor + * @param life_cycle - life_cycle object to interact with other system + * components + * @param offset_data offset data needed to calculate correct SIGNAL numbers + * used for LOW VOLTAGE functionality (as offset from SIGRTMIN) + */ + LowVoltageSignalsHandler(LifeCycle& life_cycle, + const LowVoltageSignalsOffset& offset_data); + /** + * @brief Handles RT signals related to Low Voltage functionality + * @param signal number to handle + */ + void HandleSignal(const int signo); + + /** + * @brief Returns signals mask required for handling + * LOW VOLTAGE functionality + */ + sigset_t LowVoltageSignalsMask() const; + + /** + * @brief Returns LOW VOLTAGE signal number + */ + int low_voltage_signo() const; + + /** + * @brief Returns WAKE UP signal number + */ + int wake_up_signo() const; + + /** + * @brief Returns IGNITION OFF signal number + */ + int ignition_off_signo() const; + + /** + * @brief Destructor + */ + ~LowVoltageSignalsHandler(); + + private: + /** + * @brief Destroys all parts of Low Voltage signals handler + * Invoked from destructor + */ + void Destroy(); + std::unique_ptr<NotificationThreadDelegate> notifications_delegate_; + threads::Thread* signals_handler_thread_; + LifeCycle& life_cycle_; + int SIGLOWVOLTAGE_; + int SIGWAKEUP_; + int SIGIGNOFF_; + pid_t cpid_; + sigset_t lv_mask_; +}; + +class NotificationThreadDelegate : public threads::ThreadDelegate { + public: + NotificationThreadDelegate( + LowVoltageSignalsHandler& low_voltage_signals_handler) + : low_voltage_signals_handler_(low_voltage_signals_handler) {} + + ~NotificationThreadDelegate() {} + + void threadMain() OVERRIDE; + void exitThreadMain() OVERRIDE; + + private: + LowVoltageSignalsHandler& low_voltage_signals_handler_; +}; + +} // namespace main_namespace + +#endif // SRC_APPMAIN_LOW_VOLTAGE_SIGNALS_HANDLER_H_ |