84 lines
2.6 KiB
C++
84 lines
2.6 KiB
C++
/*
|
|
* Copyright (C) 2017 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.
|
|
*/
|
|
|
|
#ifndef ANDROID_VINTF_HAL_GROUP_H
|
|
#define ANDROID_VINTF_HAL_GROUP_H
|
|
|
|
#include <map>
|
|
|
|
#include "MapValueIterator.h"
|
|
|
|
namespace android {
|
|
namespace vintf {
|
|
|
|
// A HalGroup is a wrapped multimap from name to Hal.
|
|
// Hal.getName() must return a string indicating the name.
|
|
template <typename Hal>
|
|
struct HalGroup {
|
|
public:
|
|
virtual ~HalGroup() {}
|
|
// Move all hals from another HalGroup to this.
|
|
bool addAll(HalGroup&& other) {
|
|
for (auto& pair : other.mHals) {
|
|
if (!add(std::move(pair.second))) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// Add an hal to this HalGroup so that it can be constructed programatically.
|
|
bool add(Hal&& hal) {
|
|
if (!shouldAdd(hal)) {
|
|
return false;
|
|
}
|
|
std::string name = hal.getName();
|
|
mHals.emplace(std::move(name), std::move(hal)); // always succeed
|
|
return true;
|
|
}
|
|
|
|
protected:
|
|
// sorted map from component name to the component.
|
|
// The component name looks like: android.hardware.foo
|
|
std::multimap<std::string, Hal> mHals;
|
|
|
|
// override this to filter for add.
|
|
virtual bool shouldAdd(const Hal&) const { return true; }
|
|
|
|
// Return an iterable to all ManifestHal objects. Call it as follows:
|
|
// for (const auto& e : vm.getHals()) { }
|
|
ConstMultiMapValueIterable<std::string, Hal> getHals() const {
|
|
return ConstMultiMapValueIterable<std::string, Hal>(mHals);
|
|
}
|
|
|
|
// Get any HAL component based on the component name. Return any one
|
|
// if multiple. Return nullptr if the component does not exist. This is only
|
|
// for creating objects programatically.
|
|
// The component name looks like:
|
|
// android.hardware.foo
|
|
Hal* getAnyHal(const std::string& name) {
|
|
auto it = mHals.find(name);
|
|
if (it == mHals.end()) {
|
|
return nullptr;
|
|
}
|
|
return &(it->second);
|
|
}
|
|
};
|
|
|
|
} // namespace vintf
|
|
} // namespace android
|
|
|
|
#endif // ANDROID_VINTF_HAL_GROUP_H
|