#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_POSIX && !IL2CPP_TINY_WITHOUT_DEBUGGER
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#include "os/CpuInfo.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include "utils/Memory.h"
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#include "os/Time.h"
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#include "os/Environment.h"
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#include <sys/resource.h>
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#include <sys/param.h>
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#if IL2CPP_TARGET_DARWIN
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#include <sys/sysctl.h>
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#endif
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#include <time.h>
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#if IL2CPP_TARGET_LINUX
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#include <sys/time.h>
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#include <sys/resource.h>
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#endif
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struct Il2CppCpuUsageState
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{
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int64_t kernel_time;
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int64_t user_time;
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int64_t current_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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struct rusage resource_usage;
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int64_t current_time;
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int64_t kernel_time;
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int64_t user_time;
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if (getrusage(RUSAGE_SELF, &resource_usage) == -1)
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{
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return -1;
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}
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current_time = os::Time::GetTicks100NanosecondsMonotonic();
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kernel_time = resource_usage.ru_stime.tv_sec * 1000 * 1000 * 10 + resource_usage.ru_stime.tv_usec * 10;
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user_time = resource_usage.ru_utime.tv_sec * 1000 * 1000 * 10 + resource_usage.ru_utime.tv_usec * 10;
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cpu_busy_time = (user_time - (prev ? prev->user_time : 0)) + (kernel_time - (prev ? prev->kernel_time : 0));
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cpu_total_time = (current_time - (prev ? prev->current_time : 0)) * il2cpp::os::Environment::GetProcessorCount();
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if (prev)
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{
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prev->kernel_time = kernel_time;
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prev->user_time = user_time;
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prev->current_time = current_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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