src/platform/DeviceInfoProvider.cpp

/*
 *
 *    Copyright (c) 2022 Project CHIP Authors
 *
 *    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.
 */

/**
 *    @file
 *          Provides implementations for the DeviceInfoProvider APIs.
 *          This implementation is common across all platforms.
 */

#include <lib/support/CodeUtils.h>
#include <platform/DeviceInfoProvider.h>

namespace chip {
namespace DeviceLayer {

class DeviceInfoProvider;

namespace {

DeviceInfoProvider * gDeviceInfoProvider = nullptr;

} // namespace

/**
 * Instance getter for the global DeviceInfoProvider.
 *
 * Callers have to externally synchronize usage of this function.
 *
 * @return The global Device Info provider. Assume never null.
 */
DeviceInfoProvider * GetDeviceInfoProvider()
{
    return gDeviceInfoProvider;
}

/**
 * Instance setter for the global DeviceInfoProvider.
 *
 * Callers have to externally synchronize usage of this function.
 *
 * If the `provider` is nullptr, no change is done.
 *
 * @param[in] provider the global Device Info Provider.
 */
void SetDeviceInfoProvider(DeviceInfoProvider * provider)
{
    if (provider)
    {
        gDeviceInfoProvider = provider;
    }
}

} // namespace DeviceLayer
} // namespace chip