1 /* 2 * Copyright (C) 2006 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_BUFFEREDTEXTOUTPUT_H 18 #define ANDROID_BUFFEREDTEXTOUTPUT_H 19 20 #include <binder/TextOutput.h> 21 #include <utils/threads.h> 22 #include <sys/uio.h> 23 24 // --------------------------------------------------------------------------- 25 namespace android { 26 27 class BufferedTextOutput : public TextOutput 28 { 29 public: 30 //** Flags for constructor */ 31 enum { 32 MULTITHREADED = 0x0001 33 }; 34 35 BufferedTextOutput(uint32_t flags = 0); 36 virtual ~BufferedTextOutput(); 37 38 virtual status_t print(const char* txt, size_t len); 39 virtual void moveIndent(int delta); 40 41 virtual void pushBundle(); 42 virtual void popBundle(); 43 44 protected: 45 virtual status_t writeLines(const struct iovec& vec, size_t N) = 0; 46 47 private: 48 struct BufferState; 49 struct ThreadState; 50 51 static ThreadState*getThreadState(); 52 static void threadDestructor(void *st); 53 54 BufferState*getBuffer() const; 55 56 uint32_t mFlags; 57 const int32_t mSeq; 58 const int32_t mIndex; 59 60 Mutex mLock; 61 BufferState* mGlobalState; 62 }; 63 64 // --------------------------------------------------------------------------- 65 }; // namespace android 66 67 #endif // ANDROID_BUFFEREDTEXTOUTPUT_H 68
