def lock(self, function, argument):
        if self.testandset():
            function(argument)
        else:
            self.queue.append((function, argument))
Tests whether a requested effect and an effect
dataset/ETHPy150Open kleientertainment/ds_mod_tools/pkg/win32/Python27/Lib/mutex.py/mutex.lock--crossover with--dataset/ETHPy150Open ga4gh/server/ga4gh/backend.py/VariantAnnotationsIntervalIterator._checkIdEquality