56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
/*
|
|
* Copyright (C) 2021 The Android Open Source Project
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
// Special utils for VintfObject(s).
|
|
|
|
#pragma once
|
|
|
|
// This is okay because it is a header private to libvintf. Do not do this in exported headers!
|
|
#include <android-base/logging.h>
|
|
|
|
#include <vintf/VintfObject.h>
|
|
|
|
namespace android {
|
|
namespace vintf {
|
|
namespace details {
|
|
|
|
template <typename T, typename F>
|
|
std::shared_ptr<const T> Get(const char* id, LockedSharedPtr<T>* ptr,
|
|
const F& fetchAllInformation) {
|
|
std::unique_lock<std::mutex> _lock(ptr->mutex);
|
|
if (!ptr->fetchedOnce) {
|
|
LOG(INFO) << id << ": Reading VINTF information.";
|
|
ptr->object = std::make_unique<T>();
|
|
std::string error;
|
|
status_t status = fetchAllInformation(ptr->object.get(), &error);
|
|
if (status == OK) {
|
|
ptr->fetchedOnce = true;
|
|
LOG(INFO) << id << ": Successfully processed VINTF information";
|
|
} else {
|
|
// Doubled because a malformed error std::string might cause us to
|
|
// lose the status.
|
|
LOG(ERROR) << id << ": status from fetching VINTF information: " << status;
|
|
LOG(ERROR) << id << ": " << status << " VINTF parse error: " << error;
|
|
ptr->object = nullptr; // frees the old object
|
|
}
|
|
}
|
|
return ptr->object;
|
|
}
|
|
|
|
} // namespace details
|
|
} // namespace vintf
|
|
} // namespace android
|