使用 Performance Monitoring API，它可以提供更详细和准确的性能数据，包括内存使用量、CPU使用率、网络使用量等。获取应用的内存使用量，cpu使用率

使用 Performance Monitoring API 可以获取应用的内存使用量和 CPU 使用率。以下是一个简单示例，展示如何使用 Performance Monitoring API 获取这些数据：

#include <iostream>
#include <windows.h>
#include <psapi.h>
// 获取当前进程的内存使用量（单位：MB）
double GetMemoryUsage()
    PROCESS_MEMORY_COUNTERS_EX pmc;
    GetProcessMemoryInfo(GetCurrentProcess(), (PROCESS_MEMORY_COUNTERS*)&pmc, sizeof(pmc));
    SIZE_T memoryUsage = pmc.PrivateUsage;
    return memoryUsage / 1024.0 / 1024.0;
// 获取当前进程的 CPU 使用率（百分比）
double GetCpuUsage()
    FILETIME idleTime, kernelTime, userTime;
    if (GetSystemTimes(&idleTime, &kernelTime, &userTime))
        ULARGE_INTEGER idle, kernel, user;
        idle.HighPart = idleTime.dwHighDateTime;
        idle.LowPart = idleTime.dwLowDateTime;
        kernel.HighPart = kernelTime.dwHighDateTime;
        kernel.LowPart = kernelTime.dwLowDateTime;
        user.HighPart = userTime.dwHighDateTime;
        user.LowPart = userTime.dwLowDateTime;
        ULONGLONG totalIdle = idle.QuadPart;
        ULONGLONG totalKernelUser = kernel.QuadPart + user.QuadPart;
        // 计算 CPU 使用率
        double cpuUsage = (1.0 - (totalIdle * 1.0) / totalKernelUser) * 100.0;
        return cpuUsage;
    return -1.0; // 获取失败时返回 -1
int main()
    while (true)
        double memoryUsage = GetMemoryUsage();
        double cpuUsage = GetCpuUsage();
        std::cout << "Memory Usage: " << memoryUsage << " MB\n";
        std::cout << "CPU Usage: " << cpuUsage << "%\n";
        Sleep(1000); // 每秒更新一次数据
    return 0;
这个示例使用了 Windows 平台上的相关函数来获取内存使用量和 CPU 使用率。请注意，不同平台可能有不同的实现方式。对于其他操作系统，请参考相应的文档或 API 来获取类似的信息。


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