You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

71 lines
2.3 KiB

/*
* Copyright (C) 2013 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_MEDIA_LOG_SERVICE_H
#define ANDROID_MEDIA_LOG_SERVICE_H
#include <binder/BinderService.h>
#include <media/IMediaLogService.h>
#include <media/nblog/Merger.h>
#include <media/nblog/NBLog.h>
namespace android {
class MediaLogService : public BinderService<MediaLogService>, public BnMediaLogService
{
friend class BinderService<MediaLogService>; // for MediaLogService()
public:
MediaLogService();
virtual ~MediaLogService() override;
virtual void onFirstRef() { }
static const char* getServiceName() { return "media.log"; }
static const size_t kMinSize = 0x100;
static const size_t kMaxSize = 0x10000;
virtual void registerWriter(const sp<IMemory>& shared, size_t size, const char *name);
virtual void unregisterWriter(const sp<IMemory>& shared);
virtual status_t dump(int fd, const Vector<String16>& args);
virtual status_t onTransact(uint32_t code, const Parcel& data, Parcel* reply,
uint32_t flags);
virtual void requestMergeWakeup() override;
private:
// Internal dump
static const int kDumpLockRetries = 50;
static const int kDumpLockSleepUs = 20000;
// Size of merge buffer, in bytes
static const size_t kMergeBufferSize = 64 * 1024; // TODO determine good value for this
static bool dumpTryLock(Mutex& mutex);
Mutex mLock;
Vector<sp<NBLog::DumpReader>> mDumpReaders; // protected by mLock
// FIXME Need comments on all of these, especially about locking
NBLog::Shared *mMergerShared;
NBLog::Merger mMerger;
NBLog::MergeReader mMergeReader;
const sp<NBLog::MergeThread> mMergeThread;
};
} // namespace android
#endif // ANDROID_MEDIA_LOG_SERVICE_H