1 /*
2  * Copyright (C) 2018 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 INCLUDE_PERFETTO_PROTOZERO_SCATTERED_STREAM_NULL_DELEGATE_H_
18 #define INCLUDE_PERFETTO_PROTOZERO_SCATTERED_STREAM_NULL_DELEGATE_H_
19 
20 #include <memory>
21 #include <vector>
22 
23 #include "perfetto/base/export.h"
24 #include "perfetto/base/logging.h"
25 #include "perfetto/protozero/contiguous_memory_range.h"
26 #include "perfetto/protozero/scattered_stream_writer.h"
27 
28 namespace protozero {
29 
30 class PERFETTO_EXPORT ScatteredStreamWriterNullDelegate
31     : public ScatteredStreamWriter::Delegate {
32  public:
33   explicit ScatteredStreamWriterNullDelegate(size_t chunk_size);
34   ~ScatteredStreamWriterNullDelegate() override;
35 
36   // protozero::ScatteredStreamWriter::Delegate implementation.
37   ContiguousMemoryRange GetNewBuffer() override;
38 
39  private:
40   const size_t chunk_size_;
41   std::unique_ptr<uint8_t[]> chunk_;
42 };
43 
44 }  // namespace protozero
45 
46 #endif  // INCLUDE_PERFETTO_PROTOZERO_SCATTERED_STREAM_NULL_DELEGATE_H_
47