| # Copyright (C) 2013 Google Inc. All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are |
| # met: |
| # |
| # * Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # * Redistributions in binary form must reproduce the above |
| # copyright notice, this list of conditions and the following disclaimer |
| # in the documentation and/or other materials provided with the |
| # distribution. |
| # * Neither the name of Google Inc. nor the names of its |
| # contributors may be used to endorse or promote products derived from |
| # this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| |
| class DumpReader(object): |
| """Base class for breakpad dump readers.""" |
| |
| def __init__(self, host, build_dir): |
| self._host = host |
| self._build_dir = build_dir |
| |
| def check_is_functional(self): |
| """This routine must be implemented by subclasses. |
| |
| Returns True if this reader is functional. |
| """ |
| raise NotImplementedError() |
| |
| def crash_dumps_directory(self): |
| return self._host.filesystem.join(self._build_dir, 'crash-dumps') |
| |
| def clobber_old_results(self): |
| if self._host.filesystem.isdir(self.crash_dumps_directory()): |
| self._host.filesystem.rmtree(self.crash_dumps_directory()) |
| |
| def look_for_new_crash_logs(self, crashed_processes, start_time): |
| if not crashed_processes: |
| return None |
| |
| if not self.check_is_functional(): |
| return None |
| |
| pid_to_minidump = dict() |
| for root, _, files in self._host.filesystem.walk(self.crash_dumps_directory()): |
| for dmp in [f for f in files if f.endswith(self._file_extension())]: |
| dmp_file = self._host.filesystem.join(root, dmp) |
| if self._host.filesystem.mtime(dmp_file) < start_time: |
| continue |
| pid = self._get_pid_from_dump(dmp_file) |
| if pid: |
| pid_to_minidump[pid] = dmp_file |
| |
| result = dict() |
| for test, _, pid in crashed_processes: |
| if str(pid) in pid_to_minidump: |
| stack = self._get_stack_from_dump(pid_to_minidump[str(pid)]) |
| if stack: |
| # TODO(xiaochengh): Find the real crash site. |
| result[test] = (stack, 'Placeholder crash site generated by DumpReader') |
| |
| return result |
| |
| def _get_pid_from_dump(self, dump_file): |
| """This routine must be implemented by subclasses. |
| |
| This routine returns the PID of the crashed process that produced the given dump_file. |
| """ |
| raise NotImplementedError() |
| |
| def _get_stack_from_dump(self, dump_file): |
| """This routine must be implemented by subclasses. |
| |
| Returns the stack stored in the given breakpad dump_file. |
| """ |
| raise NotImplementedError() |
| |
| def _file_extension(self): |
| """This routine must be implemented by subclasses. |
| |
| Returns the file extension of crash dumps written by breakpad. |
| """ |
| raise NotImplementedError() |
