v31.1-roots.1 · Commit 5: [PATCH 05/17] feat(net): preserve Roots peer controls and health view on v31
src/util/time.h
Before: src/util/time.h · After: src/util/time.h
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index 59abc4d5a7f64acf6396b6276e4db30cff8fdb15..db74b7deba7b61591744d1147cbf2cb311ae6ba4 100644
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src/util/time.h
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@@ -6,6 +6,7 @@
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#ifndef BITCOIN_UTIL_TIME_H
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#define BITCOIN_UTIL_TIME_H
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#include <functional>
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#include <chrono> // IWYU pragma: export
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#include <cstdint>
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#include <optional>
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@@ -158,4 +159,41 @@ struct timeval MillisToTimeval(int64_t nTimeout);
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*/
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struct timeval MillisToTimeval(std::chrono::milliseconds ms);
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/**
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* Retrieve the CPU time (user + system) spent by the current thread.
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*/
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std::chrono::nanoseconds ThreadCpuTime();
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/**
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* Measure CPU time spent by the current thread.
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* A clock is started when a CpuTimer is created. When the object is destroyed
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* the elapsed CPU time is calculated and a callback function is invoked,
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* providing it the elapsed CPU time.
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*/
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class CpuTimer
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{
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public:
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using FinishedCB = std::function<void(std::chrono::nanoseconds)>;
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/**
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* Construct a timer.
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* @param[in] finished_cb A callback to invoke when this object is destroyed.
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*/
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CpuTimer(const FinishedCB& finished_cb)
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: m_start{ThreadCpuTime()},
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m_finished_cb{finished_cb}
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{
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}
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~CpuTimer()
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{
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const auto end{ThreadCpuTime()};
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if (m_start > 0ns && end >= m_start) m_finished_cb(end - m_start);
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}
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private:
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const std::chrono::nanoseconds m_start;
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FinishedCB m_finished_cb;
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};
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#endif // BITCOIN_UTIL_TIME_H
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