utils.py revision 50ef334ec9d72f3bfa06be51a493a1ff8f4c3162 
1#! /usr/bin/python
2
3"""Utility functions for the memory tests.
4"""
5
6from datetime import datetime
7
8def compute_total_diff(line, base_time):
9    """
10    Computes the difference in time the line was recorded from the base time.
11
12    An example of a line is:
13    [4688:4688:0701/010151:ERROR:perf_provider_chromeos.cc(228)]...
14
15    Here, the month is 07, the day is 01 and the time is 01:01:51.
16
17    line- the line that contains the time the record was taken
18    base_time- the base time to measure our timestamp from
19    """
20    date = line.strip().split(":")[2].split("/")
21    timestamp = datetime(2014, int(date[0][0:2]), int(date[0][2:4]),
22                         int(date[1][0:2]), int(date[1][2:4]), int(date[1][4:6]))
23    return (timestamp - base_time).total_seconds()
24