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#!/usr/bin/env python
"""
Parse and display the traces produced by pypy-c-jit when PYPYLOG is set.
"""
import sys
import optparse
import re
def get_timestamp(line):
match = re.match(r'\[([0-9a-f]*)\] .*', line)
return int(match.group(1), 16)
def count_loops_and_bridges(log):
loops = 0
bridges = 0
time0 = None
lines = iter(log)
for line in lines:
if time0 is None and line.startswith('['):
time0 = get_timestamp(line)
if '{jit-mem-looptoken-' in line:
time_now = get_timestamp(line) - time0
text = lines.next()
if text.startswith('allocating Loop #'):
loops += 1
elif text.startswith('allocating Bridge #'):
bridges += 1
elif text.startswith('freeing Loop #'):
match = re.match('freeing Loop # .* with ([0-9]*) attached bridges\n', text)
loops -=1
bridges -= int(match.group(1))
else:
assert False, 'unknown line' % line
total = loops+bridges
yield (time_now, total, loops, bridges)
def main(logfile, options):
print 'timestamp,total,loops,bridges'
log = open(logfile)
for timestamp, total, loops, bridges in count_loops_and_bridges(log):
print '%d,%d,%d,%d' % (timestamp, total, loops, bridges)
if __name__ == '__main__':
parser = optparse.OptionParser(usage="%prog loopfile [options]")
options, args = parser.parse_args()
if len(args) != 1:
parser.print_help()
sys.exit(2)
main(args[0], options)
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