Created
August 2, 2017 03:22
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| from multiprocessing import Pipe | |
| from threading import Thread, Lock | |
| import _thread | |
| from threadedqueue import ThreadedQueue | |
| class MPObjectWrapper: | |
| def __init__(self, baseobj): | |
| self.baseobject = baseobj | |
| def get_pipe(self): | |
| u, v = Pipe() | |
| def f(): | |
| while True: | |
| try: | |
| (threadid, (cmd, args)) = v.recv() | |
| except: | |
| return | |
| try: | |
| res = getattr(self.baseobject, cmd)(*args) | |
| except Exception as e: | |
| res = e | |
| try: | |
| v.send((threadid, res)) | |
| except: | |
| return | |
| Thread(target=f).start() | |
| return u | |
| class MPEndpointHandler: | |
| def __init__(self, mainpipe): | |
| self.mainpipe = mainpipe | |
| self.resultqueue = ThreadedQueue() | |
| self.sendlock = Lock() | |
| self.recvlock = Lock() | |
| self.globallock = Lock() | |
| def __getattr__(self, item): | |
| self.globallock.acquire() | |
| if hasattr(self, item): | |
| self.globallock.release() | |
| return getattr(self, item) | |
| def f(s, *args): | |
| id = _thread.get_ident() | |
| with s.sendlock: | |
| s.mainpipe.send((id, (item, args))) | |
| with s.recvlock: | |
| v, w = s.mainpipe.recv() | |
| if v == id: | |
| return w | |
| else: | |
| self.resultqueue.put(w, v) | |
| l = self.resultqueue.get() | |
| if isinstance(l, Exception): | |
| raise l | |
| return l | |
| setattr(self, item, f) | |
| self.globallock.release() | |
| return f |
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