【windows + 大小核调度】ADL平台大小核调度尝试

调用微软接口可以对qos level进行设置，demo如下：

#include 
#include 
#include 
#include        // 头文件

using namespace std;

bool GetPIDByName(TCHAR* processName, int& pid)
{
    // 创建系统快照
    HANDLE hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    if (hSnapshot == INVALID_HANDLE_VALUE)
    {
        return false;
    }

    PROCESSENTRY32 ps;
    ZeroMemory(&ps, sizeof(PROCESSENTRY32));
    ps.dwSize = sizeof(PROCESSENTRY32);
    if (!Process32First(hSnapshot, &ps))
    {
        return false;
    }
    do
    {
        if (lstrcmpi(ps.szExeFile, processName) == 0)
        {
            // 保存进程ID
            pid = ps.th32ProcessID;
           
            CloseHandle(hSnapshot);

            return true;
        }
    } while (Process32Next(hSnapshot, &ps));

    return false;
}

wchar_t* chr2wch(const char* buffer)
{
    size_t len = strlen(buffer);
    size_t wlen = MultiByteToWideChar(CP_ACP, 0, (const char*)buffer, int(len), NULL, 0);
    wchar_t* wBuf = new wchar_t[wlen + 1];
    RtlZeroMemory(wBuf, wlen+1);
    MultiByteToWideChar(CP_ACP, 0, (const char*)buffer, int(len), wBuf, int(wlen));
    return wBuf;
}

int main()
{

    int option = 0;
    cout << "input a option ,0: low qos; 1: high qos;";
    cin >> option;

    int pid = 0;
    wstring procName(L"xxx.exe");  // 这里简单起见，写死了设置的进程名
    bool ret = GetPIDByName((TCHAR*)procName.c_str(), pid);
    //string procname("HiviewService.exe");
   // bool ret = GetPIDByName(chr2wch(procname.c_str()), pid);
    if (!ret) {
        cout << "Get pid failed." << endl;
        return -1;
    }

    HANDLE handle = OpenProcess(PROCESS_ALL_ACCESS, FALSE, pid);
    if (INVALID_HANDLE_VALUE == handle) {
        cout << "Get handle failed" << endl;
        return -1;
    }
    
    PROCESS_POWER_THROTTLING_STATE PowerThrottling;
    RtlZeroMemory(&PowerThrottling, sizeof(PowerThrottling));
    PowerThrottling.Version = PROCESS_POWER_THROTTLING_CURRENT_VERSION;

    if (option == 0) {
        //
    // EcoQoS
    // Turn EXECUTION_SPEED throttling on. 
    // ControlMask selects the mechanism and StateMask declares which mechanism should be on or off.
    //
        PowerThrottling.ControlMask = PROCESS_POWER_THROTTLING_EXECUTION_SPEED;
        PowerThrottling.StateMask = PROCESS_POWER_THROTTLING_EXECUTION_SPEED;

        ret = SetProcessInformation(handle,
            ProcessPowerThrottling,
            &PowerThrottling,
            sizeof(PowerThrottling));
        cout << "Set low qos complete, ret(" << ret<<")"<< endl;
    }
    else {
        //
    // HighQoS
    // Turn EXECUTION_SPEED throttling off. 
    // ControlMask selects the mechanism and StateMask is set to zero as mechanisms should be turned off.

        PowerThrottling.ControlMask = PROCESS_POWER_THROTTLING_EXECUTION_SPEED;
        PowerThrottling.StateMask = 0;

        SetProcessInformation(handle,
            ProcessPowerThrottling,
            &PowerThrottling,
            sizeof(PowerThrottling));
        cout << "Set high qos complete, ret(" << ret << ")" << endl;
    }
}