upload android base code part6

android/system/extras/memory_replay/LineBuffer.h

@@ -0,0 +1,36 @@
+/*
+ * Copyright (C) 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 _MEMORY_REPLAY_LINE_BUFFER_H
+#define _MEMORY_REPLAY_LINE_BUFFER_H
+
+#include <stdint.h>
+
+class LineBuffer {
+ public:
+  LineBuffer(int fd, char* buffer, size_t buffer_len);
+
+  bool GetLine(char** line, size_t* line_len);
+
+ private:
+  int fd_;
+  char* buffer_ = nullptr;
+  size_t buffer_len_ = 0;
+  size_t start_ = 0;
+  size_t bytes_ = 0;
+};
+
+#endif // _MEMORY_REPLAY_LINE_BUFFER_H