plots.py 文件源码

def _addTrace(self, port, name):
        self._linesLock.acquire()
        try:
            traceName = '%s-%s' % (port['Port Name'], name)
            if traceName in self._lines:
                raise KeyError, "Trace '%s' already exists" % traceName

            sink = self._createSink(port['Port Interface'])

            options = self._lineOptions()
            line, = self._plot.plot([], [], label=name, scalex=False, scaley=False, **options)
            trace = { 'sink':   sink,
                      'xdelta': None,
                      'line':   line,
                      'id':     name }
            self._lines[traceName] = trace
        finally:
            self._linesLock.release()
        if self._started:
            self.start()