common.py 文件源码

def getppid():
        '''
        :return: The pid of the parent of this process.
        '''
        pe = PROCESSENTRY32()
        pe.dwSize = ctypes.sizeof(PROCESSENTRY32)
        mypid = GetCurrentProcessId()
        snapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0)

        result = 0
        try:
            have_record = Process32First(snapshot, ctypes.byref(pe))

            while have_record:
                if mypid == pe.th32ProcessID:
                    result = pe.th32ParentProcessID
                    break

                have_record = Process32Next(snapshot, ctypes.byref(pe))

        finally:
            CloseHandle(snapshot)

        return result