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90 lines
3.3 KiB
90 lines
3.3 KiB
/*
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* Copyright (c) 2015, Intel Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation and/or
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* other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors
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* may be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <SubsystemObject.h>
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#include <AlwaysAssert.hpp>
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#include <string>
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class CMappingContext;
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namespace parameterFramework
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{
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namespace introspectionSubsystem
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{
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/** This subsystem object exposes a boolean parameter. The value of this parameter
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* can be retrieved by an external code that calls the getSingletonInstanceValue()
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* static method.
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*/
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class SubsystemObject final : public CSubsystemObject
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{
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public:
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SubsystemObject(const std::string &mappingValue,
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CInstanceConfigurableElement *instanceConfigurableElement,
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const CMappingContext &context, core::log::Logger &logger);
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~SubsystemObject();
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static bool getSingletonInstanceValue()
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{
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ALWAYS_ASSERT(mSingletonInstance != nullptr, "Singleton value has not been registered");
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return mSingletonInstance->mParameter;
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}
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private:
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using base = CSubsystemObject;
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virtual bool sendToHW(std::string &error) override;
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virtual bool receiveFromHW(std::string &error) override;
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static void registerInstance(const SubsystemObject &instance)
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{
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ALWAYS_ASSERT(mSingletonInstance == nullptr, "An instance is already registered");
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mSingletonInstance = &instance;
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}
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static void unregisterInstance(const SubsystemObject &instance)
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{
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// instance parameter is only used by assertion, so unused in release mode
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(void)instance;
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ALWAYS_ASSERT(mSingletonInstance == &instance, "This instance was not registered.");
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mSingletonInstance = nullptr;
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}
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static const std::size_t parameterSize = sizeof(bool);
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static const SubsystemObject *mSingletonInstance;
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bool mParameter;
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};
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} // namespace introspectionSubsystem
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} // namespace parameterFramework
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