46 lines
1.2 KiB
C++
46 lines
1.2 KiB
C++
// Copyright 2004-present Facebook. All Rights Reserved.
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#pragma once
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#ifdef WITH_FBSYSTRACE
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#include <fbsystrace.h>
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#endif
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namespace facebook {
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namespace react {
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/**
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* This is a convenience class to avoid lots of verbose profiling
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* #ifdefs. If WITH_FBSYSTRACE is not defined, the optimizer will
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* remove this completely. If it is defined, it will behave as
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* FbSystraceSection, with the right tag provided. Use two separate classes to
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* to ensure that the ODR rule isn't violated, that is, if WITH_FBSYSTRACE has
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* different values in different files, there is no inconsistency in the sizes
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* of defined symbols.
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*/
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#ifdef WITH_FBSYSTRACE
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struct ConcreteSystraceSection {
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public:
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template<typename... ConvertsToStringPiece>
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explicit
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ConcreteSystraceSection(const char* name, ConvertsToStringPiece&&... args)
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: m_section(TRACE_TAG_REACT_CXX_BRIDGE, name, args...)
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{}
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private:
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fbsystrace::FbSystraceSection m_section;
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};
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using SystraceSection = ConcreteSystraceSection;
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#else
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struct DummySystraceSection {
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public:
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template<typename... ConvertsToStringPiece>
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explicit
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DummySystraceSection(const char* name, ConvertsToStringPiece&&... args)
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{}
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};
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using SystraceSection = DummySystraceSection;
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#endif
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}}
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