processutil.py 文件源码

def is_running (pid, cmd = None):
    if cmd is None:
        cmd = os.path.split (sys.argv [0])[1]

    if os.name == "nt":
        import win32process, win32api, win32con, pywintypes
        HAS_WMI = True
        try: import wmi 
        except ImportError: HAS_WMI = False

        if pid not in win32process.EnumProcesses ():
            return False

        if HAS_WMI:
            cl = [p.CommandLine for p in wmi.WMI ().Win32_Process () if p.ProcessID == pid]
            if cl and cl [0].find (cmd) != -1:
                return True
            return False

        else:   
            try:
                handle = win32api.OpenProcess (win32con.PROCESS_QUERY_INFORMATION | win32con.PROCESS_VM_READ, 0, int (pid))
                exefilename = win32process.GetModuleFileNameEx (handle, 0)
                win32process.GetStartupInfo()
                if exefilename.lower ().find ("python.exe") != -1 or exefilename.lower ().find ("cmd.exe") != -1:
                    return True
            except pywintypes.error: 
                # Windows service, Access is denied
                return False

    else:
        proc = "/proc/%s/cmdline" % pid
        if not os.path.isfile (proc):
            return False

        with open (proc) as f:
            exefilename = f.read ()     
        if exefilename.find (cmd) != -1:
            return True

    return False