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# Copyright 2018 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import logging
import os
import subprocess
from common import SDK_ROOT
def SymbolizerFilter(input_fd, build_ids_files):
"""Symbolizes an output stream from a process.
input_fd: A file descriptor of the stream to be symbolized.
build_ids_file: Path to the ids.txt file which maps build IDs to
unstripped binaries on the filesystem.
Returns a generator that yields symbolized process output."""
llvm_symbolizer_path = os.path.join(SDK_ROOT, os.pardir, os.pardir,
'llvm-build', 'Release+Asserts', 'bin',
'llvm-symbolizer')
symbolizer = os.path.join(SDK_ROOT, 'tools', 'symbolize')
symbolizer_cmd = [symbolizer,
'-ids-rel', '-llvm-symbolizer', llvm_symbolizer_path,
'-build-id-dir', os.path.join(SDK_ROOT, '.build-id')]
for build_ids_file in build_ids_files:
symbolizer_cmd.extend(['-ids', build_ids_file])
logging.info('Running "%s".' % ' '.join(symbolizer_cmd))
symbolizer_proc = subprocess.Popen(
symbolizer_cmd,
stdout=subprocess.PIPE,
stdin=input_fd,
close_fds=True)
while True:
line = symbolizer_proc.stdout.readline()
if not line:
break
yield line
symbolizer_proc.wait()
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