PLCObject.py 文件源码

def TraceThreadProc(self):
        """
        Return a list of traces, corresponding to the list of required idx
        """
        while self.PLCStatus == "Started":
            tick = ctypes.c_uint32()
            size = ctypes.c_uint32()
            buff = ctypes.c_void_p()
            TraceBuffer = None
            if self.PLClibraryLock.acquire(False):
                if self._GetDebugData(ctypes.byref(tick),
                                      ctypes.byref(size),
                                      ctypes.byref(buff)) == 0:
                    if size.value:
                        TraceBuffer = ctypes.string_at(buff.value, size.value)
                    self._FreeDebugData()
                self.PLClibraryLock.release()
            if TraceBuffer is not None:
                self._TracesPush((tick.value, TraceBuffer))
            self._TracesAutoSuspend()
        self._TracesFlush()