78 lines
2.0 KiB
C++
78 lines
2.0 KiB
C++
/*
|
|
* Copyright (C) 2016 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 specic language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifndef ANDROID_LIBAPPFUSE_FUSEBRIDGELOOP_H_
|
|
#define ANDROID_LIBAPPFUSE_FUSEBRIDGELOOP_H_
|
|
|
|
#include <map>
|
|
#include <mutex>
|
|
#include <queue>
|
|
#include <unordered_set>
|
|
|
|
#include <android-base/macros.h>
|
|
|
|
#include "libappfuse/FuseBuffer.h"
|
|
|
|
namespace android {
|
|
namespace fuse {
|
|
|
|
class FuseBridgeLoopCallback {
|
|
public:
|
|
virtual void OnMount(int mount_id) = 0;
|
|
virtual void OnClosed(int mount_id) = 0;
|
|
virtual ~FuseBridgeLoopCallback() = default;
|
|
};
|
|
|
|
class FuseBridgeEntry;
|
|
class BridgeEpollController;
|
|
|
|
class FuseBridgeLoop final {
|
|
public:
|
|
FuseBridgeLoop();
|
|
~FuseBridgeLoop();
|
|
|
|
void Start(FuseBridgeLoopCallback* callback);
|
|
|
|
// Add bridge to the loop. It's OK to invoke the method from a different
|
|
// thread from one which invokes |Start|.
|
|
bool AddBridge(int mount_id, base::unique_fd dev_fd, base::unique_fd proxy_fd);
|
|
|
|
static void Lock();
|
|
|
|
static void Unlock();
|
|
|
|
private:
|
|
bool ProcessEventLocked(const std::unordered_set<FuseBridgeEntry*>& entries,
|
|
FuseBridgeLoopCallback* callback);
|
|
|
|
std::unique_ptr<BridgeEpollController> epoll_controller_;
|
|
|
|
// Map between |mount_id| and bridge entry.
|
|
std::map<int, std::unique_ptr<FuseBridgeEntry>> bridges_;
|
|
|
|
// Lock for multi-threading.
|
|
static std::recursive_mutex mutex_;
|
|
|
|
bool opened_;
|
|
|
|
DISALLOW_COPY_AND_ASSIGN(FuseBridgeLoop);
|
|
};
|
|
|
|
} // namespace fuse
|
|
} // namespace android
|
|
|
|
#endif // ANDROID_LIBAPPFUSE_FUSEBRIDGELOOP_H_
|