| // Copyright 2015 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CHROMIUMOS_WIDE_PROFILING_BUFFER_WRITER_H_ |
| #define CHROMIUMOS_WIDE_PROFILING_BUFFER_WRITER_H_ |
| |
| #include "chromiumos-wide-profiling/data_writer.h" |
| |
| namespace quipper { |
| |
| // Writes data to a fixed-size memory buffer. |
| class BufferWriter : public DataWriter { |
| public: |
| // The destination buffer is indicated by |buffer| and is |size| bytes long. |
| BufferWriter(void* buffer, size_t size) |
| : buffer_(reinterpret_cast<char*>(buffer)), |
| offset_(0) { |
| size_ = size; |
| } |
| |
| void SeekSet(size_t offset) override { |
| offset_ = offset; |
| } |
| |
| size_t Tell() const override { |
| return offset_; |
| } |
| |
| bool WriteData(const void* src, const size_t size) override; |
| |
| bool WriteString(const string& str, const size_t size) override; |
| |
| private: |
| // Pointer to the data buffer. Does not own the buffer. |
| char* buffer_; |
| |
| // Current write offset, in bytes from start of buffer. |
| size_t offset_; |
| }; |
| |
| } // namespace quipper |
| |
| #endif // CHROMIUMOS_WIDE_PROFILING_BUFFER_WRITER_H_ |