想了好久的问题 vc 如何获得当前每个cpu的利用率以及占用内存大小？

Question

如题！

Answer 1

好像有个非文档的函数叫什么记不清楚了，zwQuerySystemInfo? zwQuerySystemParam?你从GOOGLE里面搜一下。

Answer 2

从网上找的：
UINT GetCpuUsgesNt()
{
    SYSTEM_PERFORMANCE_INFORMATION SysPerfInfo;
    SYSTEM_TIME_INFORMATION        SysTimeInfo;
    SYSTEM_BASIC_INFORMATION       SysBaseInfo;
    double                         dbIdleTime;
    double                         dbSystemTime;
    LONG                           status;
    typedef LONG (WINAPI *PROCNTQSI)(UINT,PVOID,ULONG,PULONG);
    PROCNTQSI NtQuerySystemInformation;    NtQuerySystemInformation = (PROCNTQSI)GetProcAddress(
                                          GetModuleHandle("ntdll"),
                                         "NtQuerySystemInformation"
                                         );    if (!NtQuerySystemInformation)
{
        return 0;
}    // get number of processors in the system
    status = NtQuerySystemInformation(SystemBasicInformation,
                              &SysBaseInfo,sizeof(SysBaseInfo),NULL);    if (status != NO_ERROR)
{
        return 0;
}  status = NtQuerySystemInformation(SystemTimeInformation,
                               &SysTimeInfo,sizeof(SysTimeInfo),0);
     if (status!=NO_ERROR)
 {
          return 0;
 }     // get new CPU's idle time
     status = NtQuerySystemInformation(SystemPerformanceInformation,
                               &SysPerfInfo,sizeof(SysPerfInfo),NULL);     if (status != NO_ERROR)
 {
          return 0;
 }  
     // if it's a first call - skip it
     if (m_liOldIdleTime.QuadPart != 0)
     {
         // CurrentValue = NewValue - OldValue
         dbIdleTime = Li2Double(SysPerfInfo.liIdleTime) - Li2Double(m_liOldIdleTime);
         dbSystemTime = Li2Double(SysTimeInfo.liKeSystemTime) - Li2Double(m_liOldSystemTime);          // CurrentCpuIdle = IdleTime / SystemTime
          dbIdleTime = dbIdleTime / dbSystemTime;          // CurrentCpuUsage% = 100 - (CurrentCpuIdle * 100) / NumberOfProcessors
          dbIdleTime = 100.0 - dbIdleTime * 100.0 / (double)SysBaseInfo.bKeNumberProcessors + 0.5;          m_fNewUsges = (UINT)dbIdleTime;
     }     // store new CPU's idle and system time
     m_liOldIdleTime = SysPerfInfo.liIdleTime;
     m_liOldSystemTime = SysTimeInfo.liKeSystemTime;
 return m_fNewUsges;}UINT GetMemUsgesNt()
{
MEMORYSTATUS MemStat;
MemStat.dwLength = sizeof(MEMORYSTATUS);
GlobalMemoryStatus(&MemStat);
UINT m_ulNewUsges     = MemStat.dwMemoryLoad;
//DrawMemUsges();
return m_ulNewUsges;
}