1#!/usr/bin/env python
2#
3# Copyright 2015 the V8 project authors. All rights reserved.
4# Use of this source code is governed by a BSD-style license that can be
5# found in the LICENSE file.
6
7#
8# This is an utility for generating csv files based on GC traces produced by
9# V8 when run with flags --trace-gc --trace-gc-nvp.
10#
11# Usage: gc-nvp-to-csv.py <GC-trace-filename>
12#
13
14
15# for py2/py3 compatibility
16from __future__ import print_function
17
18import sys
19import gc_nvp_common
20
21
22def process_trace(filename):
23  trace = gc_nvp_common.parse_gc_trace(filename)
24  if len(trace):
25    keys = trace[0].keys()
26    print(', '.join(keys))
27    for entry in trace:
28      print(', '.join(map(lambda key: str(entry[key]), keys)))
29
30
31if len(sys.argv) != 2:
32  print("Usage: %s <GC-trace-filename>" % sys.argv[0])
33  sys.exit(1)
34
35process_trace(sys.argv[1])
36