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dump-cpp.py
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77 lines (64 loc) · 2.09 KB
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#!/usr/bin/env python
# Copyright 2016 the V8 project authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# This script executes dumpcpp.js, collects all dumped C++ symbols,
# and merges them back into v8 log.
# for py2/py3 compatibility
from __future__ import print_function
import os
import platform
import re
import subprocess
import sys
def is_file_executable(fPath):
return os.path.isfile(fPath) and os.access(fPath, os.X_OK)
if __name__ == '__main__':
JS_FILES = ['splaytree.js', 'codemap.js', 'csvparser.js', 'consarray.js',
'profile.js', 'logreader.js', 'arguments.js', 'tickprocessor.js',
'SourceMap.js', 'dumpcpp.js', 'dumpcpp-driver.js']
tools_path = os.path.dirname(os.path.realpath(__file__))
on_windows = platform.system() == 'Windows'
JS_FILES = [os.path.join(tools_path, f) for f in JS_FILES]
args = []
log_file = 'v8.log'
debug = False
for arg in sys.argv[1:]:
if arg == '--debug':
debug = True
continue
args.append(arg)
if not arg.startswith('-'):
log_file = arg
if on_windows:
args.append('--windows')
with open(log_file, 'r') as f:
lines = f.readlines()
d8_line = re.search(',\"(.*d8)', ''.join(lines))
if d8_line:
d8_exec = d8_line.group(1)
if not is_file_executable(d8_exec):
print('d8 binary path found in {} is not executable.'.format(log_file))
sys.exit(-1)
else:
print('No d8 binary path found in {}.'.format(log_file))
sys.exit(-1)
args = [d8_exec] + JS_FILES + ['--'] + args
with open(log_file) as f:
sp = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
stdin=f)
out, err = sp.communicate()
if debug:
print(err)
if sp.returncode != 0:
print(out)
exit(-1)
if on_windows and out:
out = re.sub('\r+\n', '\n', out)
is_written = not bool(out)
with open(log_file, 'w') as f:
for line in lines:
if not is_written and line.startswith('tick'):
f.write(out)
is_written = True
f.write(line)