#!/usr/bin/env python2
#
#  Analyze allocator logs and write total-bytes-in-use after every
#  operation to stdout.  The output can be gnuplotted as:
#
#  $ python log2gnuplot.py </tmp/duk-alloc-log.txt >/tmp/output.txt
#  $ gnuplot
#  > plot "output.txt" with lines
#

import os
import sys

def main():
	allocated = 0

	for line in sys.stdin:
		line = line.strip()
		parts = line.split(' ')

		# A ptr/NULL/FAIL size
		# F ptr/NULL size
		# R ptr/NULL oldsize ptr/NULL/FAIL newsize

		# Note: ajduk doesn't log oldsize (uses -1 instead)

		if parts[0] == 'A':
			if parts[1] != 'NULL' and parts[1] != 'FAIL':
				allocated += long(parts[2])
		elif parts[0] == 'F':
			allocated -= long(parts[2])
		elif parts[0] == 'R':
			allocated -= long(parts[2])
			if parts[3] != 'NULL' and parts[3] != 'FAIL':
				allocated += long(parts[4])
		print(allocated)

	print(allocated)

if __name__ == '__main__':
	main()
