77 lines
1.7 KiB
C++
77 lines
1.7 KiB
C++
#pragma once
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#include <chrono>
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#include <fstream>
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namespace lt {
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struct ScopeProfileResult
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{
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std::string name;
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long long start, duration;
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uint32_t threadID;
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};
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class Instrumentor
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{
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public:
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static auto instance() -> Instrumentor &
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{
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static auto instance = Instrumentor {};
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return instance;
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}
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static void begin_session(const std::string &outputPath)
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{
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instance().begin_session_impl(outputPath);
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}
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static void end_session()
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{
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instance().end_session_impl();
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}
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static void submit_scope_profile(const ScopeProfileResult &profileResult)
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{
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instance().submit_scope_profile_impl(profileResult);
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}
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private:
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std::ofstream m_output_file_stream;
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unsigned int m_current_session_count { 0u };
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Instrumentor() = default;
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void begin_session_impl(const std::string &outputPath);
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void end_session_impl();
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void submit_scope_profile_impl(const ScopeProfileResult &profileResult);
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};
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class InstrumentorTimer
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{
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public:
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InstrumentorTimer(const std::string &scopeName);
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~InstrumentorTimer();
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private:
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ScopeProfileResult m_result;
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std::chrono::time_point<std::chrono::steady_clock> m_start;
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};
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} // namespace lt
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/* scope */
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#define lt_profile_scope(name) lt_profile_scope_no_redifinition(name, __LINE__)
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#define lt_profile_scope_no_redifinition(name, line) lt_profile_scope_no_redifinition2(name, line)
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#define lt_profile_scope_no_redifinition2(name, line) InstrumentorTimer timer##line(name)
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/* function */
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#define LT_PROFILE_FUNCTION lt_profile_scope(__FUNCSIG__)
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/* session */
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#define lt_profile_begin_session(outputPath) ::lt::Instrumentor::begin_session(outputPath)
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#define lt_profile_end_session() ::lt::Instrumentor::end_session()
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