From 6fd8326590fbe02d97ca2e897a95131b47413b09 Mon Sep 17 00:00:00 2001 From: Michael Denkowski Date: Fri, 27 Sep 2013 13:39:24 -0700 Subject: Decoding and learning with multiple contexts is threadsafe and FIFO. --- realtime/rt/util.py | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'realtime/rt/util.py') diff --git a/realtime/rt/util.py b/realtime/rt/util.py index 05dcae96..52767dac 100644 --- a/realtime/rt/util.py +++ b/realtime/rt/util.py @@ -15,22 +15,30 @@ SA_INI_FILES = set(( )) class FIFOLock: + '''Lock that preserves FIFO order of blocking threads''' def __init__(self): self.q = Queue.Queue() self.i = 0 + self.lock = threading.Lock() def acquire(self): + self.lock.acquire() self.i += 1 if self.i > 1: event = threading.Event() self.q.put(event) + self.lock.release() event.wait() + return + self.lock.release() def release(self): + self.lock.acquire() self.i -= 1 if self.i > 0: self.q.get().set() + self.lock.release() def cdec_ini_for_config(config): # This is a list of (k, v), not a ConfigObj or dict -- cgit v1.2.3