common/timer.py

# --------------------------------------------------------
# Fast R-CNN
# Copyright (c) 2015 Microsoft
# Licensed under The MIT License [see LICENSE for details]
# Written by Ross Girshick
# --------------------------------------------------------

import time

class Timer(object):
    """A simple timer."""
    def __init__(self):
        self.total_time = 0.
        self.calls = 0
        self.start_time = 0.
        self.diff = 0.
        self.average_time = 0.
        self.warm_up = 0

    def tic(self):
        # using time.time instead of time.clock because time time.clock
        # does not normalize for multithreading
        self.start_time = time.time()

    def toc(self, average=True):
        self.diff = time.time() - self.start_time
        if self.warm_up < 10:
            self.warm_up += 1
            return self.diff
        else:
            self.total_time += self.diff
            self.calls += 1
            self.average_time = self.total_time / self.calls

        if average:
            return self.average_time
        else:
            return self.diff