Coverage for melissa/launcher/queue.py: 100%

1#!/usr/bin/python3 

2 

3# Copyright (c) 2021-2022, Institut National de Recherche en Informatique et en Automatique (Inria) 

4# All rights reserved. 

5# 

6# Redistribution and use in source and binary forms, with or without 

7# modification, are permitted provided that the following conditions are met: 

8# 

9# * Redistributions of source code must retain the above copyright notice, this 

10# list of conditions and the following disclaimer. 

11# 

12# * Redistributions in binary form must reproduce the above copyright notice, 

13# this list of conditions and the following disclaimer in the documentation 

14# and/or other materials provided with the distribution. 

15# 

16# * Neither the name of the copyright holder nor the names of its 

17# contributors may be used to endorse or promote products derived from 

18# this software without specific prior written permission. 

19# 

20# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 

21# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 

22# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 

23# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE 

24# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 

25# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 

26# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 

27# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 

28# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 

29# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

30 

31import queue 

32 

33from melissa.utility.networking import Socket 

34 

35from .event import Event 

36 

37 

38class Queue: 

39 def __init__(self, eventfd: Socket) -> None: 

40 self._eventfd = eventfd 

41 self._queue = queue.Queue() # type: queue.Queue[Event] 

42 

43 def qsize(self) -> int: 

44 return self._queue.qsize() 

45 

46 def empty(self) -> bool: 

47 return self._queue.empty() 

48 

49 def put(self, item: Event) -> None: 

50 self._queue.put(item) 

51 self._eventfd.send(b'\0') 

52 

53 def get(self) -> Event: 

54 return self._queue.get()