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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,109 @@ | ||
| //----------------------------------------------------------------------------- | ||
| // Engine Includes | ||
| //----------------------------------------------------------------------------- | ||
| #pragma region | ||
|
|
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| #include "logging\cpu_timer.hpp" | ||
| #include "logging\error.hpp" | ||
| #include "parallel\parallel.hpp" | ||
| #include "system\system_time.hpp" | ||
|
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| #pragma endregion | ||
|
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| //----------------------------------------------------------------------------- | ||
| // Engine Definitions | ||
| //----------------------------------------------------------------------------- | ||
| namespace mage { | ||
|
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| CPUTimer::CPUTimer() | ||
| : m_handle(GetCurrentProcess()), m_nb_processor_cores(NumberOfSystemCores()), | ||
| m_initial_kernel_mode_time(0), m_initial_user_mode_time(0), | ||
| m_last_kernel_mode_time(0), m_last_user_mode_time(0), | ||
| m_elapsed_kernel_mode_time(0.0), m_elapsed_user_mode_time(0.0), | ||
| m_running(false) {} | ||
|
|
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| void CPUTimer::Start() { | ||
| if (m_running) { | ||
| return; | ||
| } | ||
|
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| m_running = true; | ||
|
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| UpdateInitialTime(); | ||
| // Reset the elapsed time. | ||
| m_elapsed_kernel_mode_time = 0.0; | ||
| m_elapsed_user_mode_time = 0.0; | ||
| UpdateLastTime(); | ||
| } | ||
|
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| void CPUTimer::Stop() { | ||
| if (!m_running) { | ||
| return; | ||
| } | ||
|
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| m_running = false; | ||
|
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| UpdateElapsedTime(); | ||
| } | ||
|
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| void CPUTimer::Restart() { | ||
| m_running = false; | ||
| Start(); | ||
| } | ||
|
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| void CPUTimer::Resume() { | ||
| if (m_running) { | ||
| return; | ||
| } | ||
|
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| m_running = true; | ||
|
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| UpdateLastTime(); | ||
| } | ||
|
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| double CPUTimer::GetElapsedCoreTime() const { | ||
| if (m_running) { | ||
| UpdateElapsedTime(); | ||
| } | ||
|
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| return m_elapsed_kernel_mode_time + m_elapsed_user_mode_time; | ||
| } | ||
|
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| double CPUTimer::GetElapsedKernelModeTime() const { | ||
| if (m_running) { | ||
| UpdateElapsedTime(); | ||
| } | ||
|
|
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| return m_elapsed_kernel_mode_time; | ||
| } | ||
|
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| double CPUTimer::GetElapsedUserModeTime() const { | ||
| if (m_running) { | ||
| UpdateElapsedTime(); | ||
| } | ||
|
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| return m_elapsed_user_mode_time; | ||
| } | ||
|
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| void CPUTimer::UpdateInitialTime() { | ||
| // Set the initial time stamp. | ||
| GetCoreTime(m_handle, &m_initial_kernel_mode_time, &m_initial_user_mode_time); | ||
| } | ||
|
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| void CPUTimer::UpdateLastTime() const { | ||
| // Set the last time stamp. | ||
| GetCoreTime(m_handle, &m_last_kernel_mode_time, &m_last_user_mode_time); | ||
| } | ||
|
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| void CPUTimer::UpdateElapsedTime() const { | ||
| uint64_t kernel_mode_time; | ||
| uint64_t user_mode_time; | ||
| GetCoreTime(m_handle, &kernel_mode_time, &user_mode_time); | ||
|
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| m_elapsed_kernel_mode_time = 0.0000001 * (kernel_mode_time - m_last_kernel_mode_time); | ||
| m_elapsed_user_mode_time = 0.0000001 * (user_mode_time - m_last_user_mode_time); | ||
|
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| m_last_kernel_mode_time = kernel_mode_time; | ||
| m_last_user_mode_time = user_mode_time; | ||
| } | ||
| } |
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