我们从Python开源项目中，提取了以下17个代码示例，用于说明如何使用asyncore.readwrite()。
def _handle_io(self, obj, mask): asyncore.readwrite(obj, mask) # Make sure objects removed during the readwrite() aren't re-added if obj._fileno not in self._fd_map: return False # If read-/writability has changed, change watch mask if self._get_mask(obj) != self._watch_map[obj][1]: source_id = gobject.idle_add(self._add_watch, obj, priority=IO_PRIORITY) self._watch_map[obj] = (source_id, 'idle_add') return False return True
def test_readwriteexc(self): # Check exception handling behavior of read, write and _exception # check that ExitNow exceptions in the object handler method # bubbles all the way up through asyncore read/write/_exception calls tr1 = exitingdummy() self.assertRaises(asyncore.ExitNow, asyncore.read, tr1) self.assertRaises(asyncore.ExitNow, asyncore.write, tr1) self.assertRaises(asyncore.ExitNow, asyncore._exception, tr1) # check that an exception other than ExitNow in the object handler # method causes the handle_error method to get called tr2 = crashingdummy() asyncore.read(tr2) self.assertEqual(tr2.error_handled, True) tr2 = crashingdummy() asyncore.write(tr2) self.assertEqual(tr2.error_handled, True) tr2 = crashingdummy() asyncore._exception(tr2) self.assertEqual(tr2.error_handled, True) # asyncore.readwrite uses constants in the select module that # are not present in Windows systems (see this thread: # http://mail.python.org/pipermail/python-list/2001-October/109973.html) # These constants should be present as long as poll is available
def test_readwrite(self): # Check that correct methods are called by readwrite() attributes = ('read', 'expt', 'write', 'closed', 'error_handled') expected = ( (select.POLLIN, 'read'), (select.POLLPRI, 'expt'), (select.POLLOUT, 'write'), (select.POLLERR, 'closed'), (select.POLLHUP, 'closed'), (select.POLLNVAL, 'closed'), ) class testobj: def __init__(self): self.read = False self.write = False self.closed = False self.expt = False self.error_handled = False def handle_read_event(self): self.read = True def handle_write_event(self): self.write = True def handle_close(self): self.closed = True def handle_expt_event(self): self.expt = True def handle_error(self): self.error_handled = True for flag, expectedattr in expected: tobj = testobj() self.assertEqual(getattr(tobj, expectedattr), False) asyncore.readwrite(tobj, flag) # Only the attribute modified by the routine we expect to be # called should be True. for attr in attributes: self.assertEqual(getattr(tobj, attr), attr==expectedattr) # check that ExitNow exceptions in the object handler method # bubbles all the way up through asyncore readwrite call tr1 = exitingdummy() self.assertRaises(asyncore.ExitNow, asyncore.readwrite, tr1, flag) # check that an exception other than ExitNow in the object handler # method causes the handle_error method to get called tr2 = crashingdummy() self.assertEqual(tr2.error_handled, False) asyncore.readwrite(tr2, flag) self.assertEqual(tr2.error_handled, True)
