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/*
* 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_
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