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71 lines
2.3 KiB
71 lines
2.3 KiB
4 months ago
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/*
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* Copyright (C) 2013 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_MEDIA_LOG_SERVICE_H
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#define ANDROID_MEDIA_LOG_SERVICE_H
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#include <binder/BinderService.h>
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#include <media/IMediaLogService.h>
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#include <media/nblog/Merger.h>
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#include <media/nblog/NBLog.h>
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namespace android {
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class MediaLogService : public BinderService<MediaLogService>, public BnMediaLogService
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{
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friend class BinderService<MediaLogService>; // for MediaLogService()
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public:
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MediaLogService();
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virtual ~MediaLogService() override;
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virtual void onFirstRef() { }
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static const char* getServiceName() { return "media.log"; }
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static const size_t kMinSize = 0x100;
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static const size_t kMaxSize = 0x10000;
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virtual void registerWriter(const sp<IMemory>& shared, size_t size, const char *name);
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virtual void unregisterWriter(const sp<IMemory>& shared);
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virtual status_t dump(int fd, const Vector<String16>& args);
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virtual status_t onTransact(uint32_t code, const Parcel& data, Parcel* reply,
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uint32_t flags);
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virtual void requestMergeWakeup() override;
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private:
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// Internal dump
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static const int kDumpLockRetries = 50;
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static const int kDumpLockSleepUs = 20000;
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// Size of merge buffer, in bytes
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static const size_t kMergeBufferSize = 64 * 1024; // TODO determine good value for this
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static bool dumpTryLock(Mutex& mutex);
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Mutex mLock;
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Vector<sp<NBLog::DumpReader>> mDumpReaders; // protected by mLock
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// FIXME Need comments on all of these, especially about locking
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NBLog::Shared *mMergerShared;
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NBLog::Merger mMerger;
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NBLog::MergeReader mMergeReader;
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const sp<NBLog::MergeThread> mMergeThread;
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};
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} // namespace android
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#endif // ANDROID_MEDIA_LOG_SERVICE_H
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