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/*
**
** Copyright 2015, 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_RESOURCEMANAGERSERVICE_H
#define ANDROID_RESOURCEMANAGERSERVICE_H
#include <arpa/inet.h>
#include <binder/BinderService.h>
#include <utils/Errors.h>
#include <utils/KeyedVector.h>
#include <utils/String8.h>
#include <utils/threads.h>
#include <utils/Vector.h>
#include <media/IResourceManagerService.h>
namespace android {
class ServiceLog;
struct ProcessInfoInterface;
struct ResourceInfo {
int64_t clientId;
sp<IResourceManagerClient> client;
Vector<MediaResource> resources;
};
typedef Vector<ResourceInfo> ResourceInfos;
typedef KeyedVector<int, ResourceInfos> PidResourceInfosMap;
class ResourceManagerService
: public BinderService<ResourceManagerService>,
public BnResourceManagerService
{
public:
static char const *getServiceName() { return "media.resource_manager"; }
virtual status_t dump(int fd, const Vector<String16>& args);
ResourceManagerService();
ResourceManagerService(sp<ProcessInfoInterface> processInfo);
// IResourceManagerService interface
virtual void config(const Vector<MediaResourcePolicy> &policies);
virtual void addResource(
int pid,
int64_t clientId,
const sp<IResourceManagerClient> client,
const Vector<MediaResource> &resources);
virtual void removeResource(int pid, int64_t clientId);
// Tries to reclaim resource from processes with lower priority than the calling process
// according to the requested resources.
// Returns true if any resource has been reclaimed, otherwise returns false.
virtual bool reclaimResource(int callingPid, const Vector<MediaResource> &resources);
protected:
virtual ~ResourceManagerService();
private:
friend class ResourceManagerServiceTest;
// Gets the list of all the clients who own the specified resource type.
// Returns false if any client belongs to a process with higher priority than the
// calling process. The clients will remain unchanged if returns false.
bool getAllClients_l(int callingPid, const String8 &type,
Vector<sp<IResourceManagerClient>> *clients);
// Gets the client who owns specified resource type from lowest possible priority process.
// Returns false if the calling process priority is not higher than the lowest process
// priority. The client will remain unchanged if returns false.
bool getLowestPriorityBiggestClient_l(int callingPid, const String8 &type,
sp<IResourceManagerClient> *client);
// Gets lowest priority process that has the specified resource type.
// Returns false if failed. The output parameters will remain unchanged if failed.
bool getLowestPriorityPid_l(const String8 &type, int *pid, int *priority);
// Gets the client who owns biggest piece of specified resource type from pid.
// Returns false if failed. The client will remain unchanged if failed.
bool getBiggestClient_l(int pid, const String8 &type, sp<IResourceManagerClient> *client);
bool isCallingPriorityHigher_l(int callingPid, int pid);
// A helper function basically calls getLowestPriorityBiggestClient_l and add the result client
// to the given Vector.
void getClientForResource_l(
int callingPid, const MediaResource *res, Vector<sp<IResourceManagerClient>> *clients);
mutable Mutex mLock;
sp<ProcessInfoInterface> mProcessInfo;
sp<ServiceLog> mServiceLog;
PidResourceInfosMap mMap;
bool mSupportsMultipleSecureCodecs;
bool mSupportsSecureWithNonSecureCodec;
};
// ----------------------------------------------------------------------------
}; // namespace android
#endif // ANDROID_RESOURCEMANAGERSERVICE_H
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