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more intuitive blocking loop

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This commit is contained in:
Anthony Scopatz 2016-07-25 13:53:55 -04:00
parent 2ae1c16358
commit b499a5202f
1 changed files with 11 additions and 6 deletions
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17
xonsh/lazyasd.py
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@ -280,13 +280,18 @@ class BackgroundModuleLoader(threading.Thread):
def run(self):
# wait for other modules to stop being imported
i = 0
last = -6
hist = [-5, -4, -3, -2, -1]
while not all(last == x for x in hist):
# We assume that module loading is finished when sys.modules doesn't
# get longer in 5 consecutive 1ms waiting steps
counter = 0
last = -1
while counter < 5:
new = len(sys.modules)
if new == last:
counter += 1
else:
last = new
counter = 0
time.sleep(0.001)
last = hist[i % 5] = len(sys.modules)
i += 1
# now import module properly
modname = importlib.util.resolve_name(self.name, self.package)
if isinstance(sys.modules[modname], BackgroundModuleProxy):