proxygen
ScopedTraceSection.h
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1 /*
2  * Copyright 2017-present Facebook, Inc.
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  * This macro enables FbSystrace usage in production for fb4a. When
18  * FOLLY_SCOPED_TRACE_SECTION_HEADER is defined then a trace section is started
19  * and later automatically terminated at the close of the scope it is called in.
20  * In all other cases no action is taken.
21  */
22 
23 #pragma once
24 
25 #if defined(FOLLY_SCOPED_TRACE_SECTION_HEADER)
26 #include FOLLY_SCOPED_TRACE_SECTION_HEADER
27 #else
28 #define FOLLY_SCOPED_TRACE_SECTION(arg, ...) \
29  do { \
30  } while (0)
31 #endif