#! /usr/bin/python

"""Parses the actual memory usage from TCMalloc.

This goes through logs that have the actual allocated memory (not sampled) in
the logs. The output is of the form of:

time (in seconds from some base time), amount of memory allocated by the
application

"""

import argparse
from utils import compute_total_diff
from datetime import datetime

pretty_print = True

parser = argparse.ArgumentParser()
parser.add_argument("filename")
args = parser.parse_args()

my_file = open(args.filename)
output_file = open("raw_memory_data.csv", "a")

base_time = datetime(2014, 6, 11, 0, 0)
prev_line = ""
half_entry = (None, None)

for line in my_file:
    if "Output Heap Stats:" in line:
        total_diff = compute_total_diff(line, base_time)
        half_entry = (total_diff, None)
    if "Bytes in use by application" in line:
        total_diff = half_entry[0]
        memory_used = int(line.strip().split()[1])
        half_entry = (None, None)
        output_file.write("{0},{1}\n".format(total_diff, memory_used))