1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef ANDROID_MEDIA_LOG_SERVICE_H 18 #define ANDROID_MEDIA_LOG_SERVICE_H 19 20 #include <binder/BinderService.h> 21 #include <media/IMediaLogService.h> 22 #include <media/nbaio/NBLog.h> 23 24 namespace android { 25 26 class MediaLogService : public BinderService<MediaLogService>, public BnMediaLogService 27 { 28 friend class BinderService<MediaLogService>; // for MediaLogService() 29 public: MediaLogService()30 MediaLogService() : BnMediaLogService() { } ~MediaLogService()31 virtual ~MediaLogService() { } onFirstRef()32 virtual void onFirstRef() { } 33 getServiceName()34 static const char* getServiceName() { return "media.log"; } 35 36 static const size_t kMinSize = 0x100; 37 static const size_t kMaxSize = 0x10000; 38 virtual void registerWriter(const sp<IMemory>& shared, size_t size, const char *name); 39 virtual void unregisterWriter(const sp<IMemory>& shared); 40 41 virtual status_t dump(int fd, const Vector<String16>& args); 42 virtual status_t onTransact(uint32_t code, const Parcel& data, Parcel* reply, 43 uint32_t flags); 44 45 private: 46 47 // Internal dump 48 static const int kDumpLockRetries = 50; 49 static const int kDumpLockSleepUs = 20000; 50 static bool dumpTryLock(Mutex& mutex); 51 52 Mutex mLock; 53 class NamedReader { 54 public: NamedReader()55 NamedReader() : mReader(0) { mName[0] = '\0'; } // for Vector NamedReader(const sp<NBLog::Reader> & reader,const char * name)56 NamedReader(const sp<NBLog::Reader>& reader, const char *name) : mReader(reader) 57 { strlcpy(mName, name, sizeof(mName)); } ~NamedReader()58 ~NamedReader() { } reader()59 const sp<NBLog::Reader>& reader() const { return mReader; } name()60 const char* name() const { return mName; } 61 private: 62 sp<NBLog::Reader> mReader; 63 static const size_t kMaxName = 32; 64 char mName[kMaxName]; 65 }; 66 Vector<NamedReader> mNamedReaders; 67 }; 68 69 } // namespace android 70 71 #endif // ANDROID_MEDIA_LOG_SERVICE_H 72