#include "os/c-api/il2cpp-config-platforms.h"
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#if IL2CPP_PLATFORM_SUPPORTS_CPU_INFO
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#if IL2CPP_TARGET_WINDOWS
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#include "os/CpuInfo.h"
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#include "utils/Memory.h"
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#define WIN32_LEAN_AND_MEAN 1
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#include <Windows.h>
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struct Il2CppCpuUsageState
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{
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uint64_t kernel_time;
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uint64_t user_time;
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uint64_t idle_time;
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};
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namespace il2cpp
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{
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namespace os
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{
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void* CpuInfo::Create()
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{
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return IL2CPP_MALLOC_ZERO(sizeof(Il2CppCpuUsageState));
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}
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int32_t CpuInfo::Usage(void* previous)
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{
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Il2CppCpuUsageState* prev = (Il2CppCpuUsageState*)previous;
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int32_t cpu_usage = 0;
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int64_t cpu_total_time;
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int64_t cpu_busy_time;
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uint64_t idle_time;
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uint64_t kernel_time;
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uint64_t user_time;
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::GetSystemTimes((FILETIME*)&idle_time, (FILETIME*)&kernel_time, (FILETIME*)&user_time);
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cpu_total_time = (int64_t)((user_time - (prev ? prev->user_time : 0)) + (kernel_time - (prev ? prev->kernel_time : 0)));
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cpu_busy_time = (int64_t)(cpu_total_time - (idle_time - (prev ? prev->idle_time : 0)));
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if (prev)
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{
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prev->idle_time = idle_time;
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prev->kernel_time = kernel_time;
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prev->user_time = user_time;
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}
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if (cpu_total_time > 0 && cpu_busy_time > 0)
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cpu_usage = (int32_t)(cpu_busy_time * 100 / cpu_total_time);
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return cpu_usage;
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}
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}
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}
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#endif
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#endif
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