C++重启进程教程

C++重启进程

步骤：

1、查找需要重启进程的进程id

2、启动需要重启的进程

3、杀死第一步进程id的进程

代码：

1、查找需要重启的进程的进程id

//通过进程名查找进程Id
bool GRPCClient::FindProcess(std::wstring strProcessName, DWORD& nPid)
{

    TCHAR tszProcess[64] = { 0 };
    lstrcpy(tszProcess, strProcessName.c_str());
    //查找进程
    STARTUPINFO st;
    PROCESS_INFORMATION pi;
    PROCESSENTRY32 ps;
    HANDLE hSnapshot;
    memset(&st, 0, sizeof(STARTUPINFO));
    st.cb = sizeof(STARTUPINFO);
    memset(&ps, 0, sizeof(PROCESSENTRY32));
    ps.dwSize = sizeof(PROCESSENTRY32);
    memset(&pi, 0, sizeof(PROCESS_INFORMATION));
    // 遍历进程  
    hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
    if (hSnapshot == INVALID_HANDLE_VALUE)
        return false;
    if (!Process32First(hSnapshot, &ps))
        return false;
    do {
        if (lstrcmp(ps.szExeFile, tszProcess) == 0)
        {
            //找到制定的程序
            nPid = ps.th32ProcessID;
            CloseHandle(hSnapshot);
            return true;
        }
    } while (Process32Next(hSnapshot, &ps));
    CloseHandle(hSnapshot);
    return false;
}

2、启动进程

//启动进程
bool GRPCClient::StartPrcess(std::wstring strProcessName)
{
    TCHAR tszProcess[64] = { 0 };
    lstrcpy(tszProcess, strProcessName.c_str());
    //启动程序
    SHELLEXECUTEINFO shellInfo;
    memset(&shellInfo, 0, sizeof(SHELLEXECUTEINFO));
    shellInfo.cbSize = sizeof(SHELLEXECUTEINFO);
    shellInfo.fMask = NULL;
    shellInfo.hwnd = NULL;
    shellInfo.lpVerb = NULL;
    shellInfo.lpFile = tszProcess;                        // 执行的程序名(绝对路径)
    shellInfo.lpParameters = NULL;
    shellInfo.lpDirectory = NULL;
    shellInfo.nShow = SW_MINIMIZE;                        //SW_SHOWNORMAL 全屏显示这个程序
    shellInfo.hInstApp = NULL;
    ShellExecuteEx(&shellInfo);

    return true;
}

3、杀死进程

//杀死进程
bool GRPCClient::KillProcess(DWORD dwPid)
{
    printf("Kill进程Pid = %d\n", dwPid); 
    //关闭进程
    HANDLE killHandle = OpenProcess(PROCESS_TERMINATE | PROCESS_QUERY_INFORMATION |   // Required by Alpha
        PROCESS_CREATE_THREAD |   // For CreateRemoteThread
        PROCESS_VM_OPERATION |   // For VirtualAllocEx/VirtualFreeEx
        PROCESS_VM_WRITE,             // For WriteProcessMemory);
        FALSE, dwPid);
    if (killHandle == NULL)
        return false;
    TerminateProcess(killHandle, 0);
    return true;
}

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