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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def tic(self):
 """Start collecting stats for current batch. Call before calling forward."""

        if self.step % self.interval == 0:
            for exe in self.exes:
                for array in exe.arg_arrays:
                    array.wait_to_read()
                for array in exe.aux_arrays:
                    array.wait_to_read()
            self.queue = []
            self.activated = True
        self.step += 1