| # Copyright (C) 2013 Samsung Electronics. All rights reserved. |
| # |
| # Based on code from Chromium, copyright as follows: |
| # |
| # Copyright (c) 2013 The Chromium Authors. 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. |
| # |
| # 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. |
| |
| from collections import defaultdict |
| import hashlib |
| import logging |
| import re |
| import subprocess |
| from xml.dom.minidom import parseString |
| from xml.parsers.expat import ExpatError |
| |
| _log = logging.getLogger(__name__) |
| |
| |
| def get_text_of(top_node, name): |
| """ Returns all text in all DOM nodes with a certain |name| that are children of |top_node|. """ |
| |
| text = "" |
| for nodes_named in top_node.getElementsByTagName(name): |
| text += "".join([node.data for node in nodes_named.childNodes |
| if node.nodeType == node.TEXT_NODE]) |
| return text |
| |
| |
| def get_CDATA_of(top_node, name): |
| """ Returns all CDATA in all DOM nodes with a certain |name| that are children of |top_node|. """ |
| |
| text = "" |
| for nodes_named in top_node.getElementsByTagName(name): |
| text += "".join([node.data for node in nodes_named.childNodes |
| if node.nodeType == node.CDATA_SECTION_NODE]) |
| if (text == ""): |
| return None |
| return text |
| |
| |
| # Constants that give real names to the abbreviations in valgrind XML output. |
| INSTRUCTION_POINTER = "ip" |
| OBJECT_FILE = "obj" |
| FUNCTION_NAME = "fn" |
| SRC_FILE_DIR = "dir" |
| SRC_FILE_NAME = "file" |
| SRC_LINE = "line" |
| |
| |
| def gather_frames(node, source_dir): |
| frame_dict = lambda frame: { |
| INSTRUCTION_POINTER: get_text_of(frame, INSTRUCTION_POINTER), |
| OBJECT_FILE: get_text_of(frame, OBJECT_FILE), |
| FUNCTION_NAME: get_text_of(frame, FUNCTION_NAME), |
| SRC_FILE_DIR: get_text_of(frame, SRC_FILE_DIR), |
| SRC_FILE_NAME: get_text_of(frame, SRC_FILE_NAME), |
| SRC_LINE: get_text_of(frame, SRC_LINE)} |
| |
| return [frame_dict(frame) for frame in node.getElementsByTagName("frame")] |
| |
| |
| class ValgrindError: |
| |
| def __init__(self, executive, source_dir, error_node): |
| self._executive = executive |
| self._kind = get_text_of(error_node, "kind") |
| self._backtraces = [] |
| self._suppression = None |
| self._additional = [] |
| |
| # Iterate through the nodes, parsing <what|auxwhat><stack> pairs. |
| description = None |
| for node in error_node.childNodes: |
| if node.localName == "what" or node.localName == "auxwhat": |
| description = "".join([n.data for n in node.childNodes |
| if n.nodeType == n.TEXT_NODE]) |
| elif node.localName == "xwhat": |
| description = get_text_of(node, "text") |
| elif node.localName == "stack": |
| assert description |
| self._backtraces.append([description, gather_frames(node, source_dir)]) |
| description = None |
| elif node.localName == "origin": |
| description = get_text_of(node, "what") |
| stack = node.getElementsByTagName("stack")[0] |
| frames = gather_frames(stack, source_dir) |
| self._backtraces.append([description, frames]) |
| description = None |
| stack = None |
| frames = None |
| elif description and node.localName != None: |
| # The lastest description has no stack, e.g. "Address 0x28 is unknown". |
| self._additional.append(description) |
| description = None |
| |
| if node.localName == "suppression": |
| self._suppression = get_CDATA_of(node, "rawtext") |
| |
| def __str__(self): |
| output = self._kind + "\n" |
| for backtrace in self._backtraces: |
| output += backtrace[0] + "\n" |
| |
| buf = "" |
| for frame in backtrace[1]: |
| buf += (frame[FUNCTION_NAME] or frame[INSTRUCTION_POINTER]) + "\n" |
| |
| input = buf.encode('latin-1').split("\n") |
| demangled_names = [self._executive.run_command(['c++filt', '-n', name]) for name in input if name] |
| |
| i = 0 |
| for frame in backtrace[1]: |
| output += (" " + demangled_names[i]) |
| i = i + 1 |
| |
| if frame[SRC_FILE_DIR] != "": |
| output += (" (" + frame[SRC_FILE_DIR] + "/" + frame[SRC_FILE_NAME] + |
| ":" + frame[SRC_LINE] + ")") |
| else: |
| output += " (" + frame[OBJECT_FILE] + ")" |
| output += "\n" |
| |
| for additional in self._additional: |
| output += additional + "\n" |
| |
| assert self._suppression != None, "Your Valgrind doesn't generate " \ |
| "suppressions - is it too old?" |
| |
| output += "Suppression (error hash=#%016X#):\n" % self.error_hash() |
| |
| # Widen the suppressions slightly. |
| supp = self._suppression |
| supp = supp.replace("fun:_Znwj", "fun:_Znw*") |
| supp = supp.replace("fun:_Znwm", "fun:_Znw*") |
| supp = supp.replace("fun:_Znaj", "fun:_Zna*") |
| supp = supp.replace("fun:_Znam", "fun:_Zna*") |
| |
| # Split into lines so we can enforce length limits. |
| supplines = supp.split("\n") |
| supp = None # to avoid re-use |
| |
| # Truncate at line 26 (VG_MAX_SUPP_CALLERS plus 2 for name and type) |
| # (https://bugs.kde.org/show_bug.cgi?id=199468 proposes raising |
| # VG_MAX_SUPP_CALLERS, but we're probably fine with it as is.) |
| newlen = min(26, len(supplines)) |
| |
| if (len(supplines) > newlen): |
| supplines = supplines[0:newlen] |
| supplines.append("}") |
| |
| for frame in range(len(supplines)): |
| # Replace the always-changing anonymous namespace prefix with "*". |
| m = re.match("( +fun:)_ZN.*_GLOBAL__N_.*\.cc_" + |
| "[0-9a-fA-F]{8}_[0-9a-fA-F]{8}(.*)", |
| supplines[frame]) |
| if m: |
| supplines[frame] = "*".join(m.groups()) |
| |
| return output + "\n".join(supplines) + "\n" |
| |
| def unique_string(self): |
| rep = self._kind + " " |
| for backtrace in self._backtraces: |
| for frame in backtrace[1]: |
| rep += frame[FUNCTION_NAME] |
| |
| if frame[SRC_FILE_DIR] != "": |
| rep += frame[SRC_FILE_DIR] + "/" + frame[SRC_FILE_NAME] |
| else: |
| rep += frame[OBJECT_FILE] |
| return rep |
| |
| def error_hash(self): |
| # This is a device-independent hash identifying the suppression. |
| # By printing out this hash we can find duplicate reports between tests and |
| # different shards running on multiple buildbots |
| return int(hashlib.md5(self.unique_string()).hexdigest()[:16], 16) |
| |
| def __hash__(self): |
| return hash(self.unique_string()) |
| |
| def __eq__(self, rhs): |
| return self.unique_string() == rhs |
| |
| |
| class LeakDetectorValgrind(object): |
| |
| def __init__(self, executive, filesystem, source_dir): |
| self._executive = executive |
| self._filesystem = filesystem |
| self._source_dir = source_dir |
| |
| # Contains the set of unique errors. |
| self._errors = set() |
| # Contains all suppressions used. |
| self._suppressions = defaultdict(int) |
| |
| def _parse_leaks_output(self, leaks_output): |
| try: |
| parsed_string = parseString(leaks_output) |
| except ExpatError as e: |
| parse_failed = True |
| _log.error("could not parse %s: %s" % (leaks_output, e)) |
| return |
| |
| cur_report_errors = set() |
| |
| commandline = None |
| preamble = parsed_string.getElementsByTagName("preamble")[0] |
| for node in preamble.getElementsByTagName("line"): |
| if node.localName == "line": |
| for x in node.childNodes: |
| if x.nodeType == node.TEXT_NODE and "Command" in x.data: |
| commandline = x.data |
| break |
| |
| raw_errors = parsed_string.getElementsByTagName("error") |
| for raw_error in raw_errors: |
| # Ignore "possible" leaks and InvalidRead/Write by default. |
| if (get_text_of(raw_error, "kind") != "Leak_PossiblyLost") and \ |
| (get_text_of(raw_error, "kind") != "Leak_StillReachable") and \ |
| (get_text_of(raw_error, "kind") != "InvalidWrite") and \ |
| (get_text_of(raw_error, "kind") != "InvalidRead"): |
| error = ValgrindError(self._executive, self._source_dir, raw_error) |
| if error not in cur_report_errors: |
| # We haven't seen such errors doing this report yet... |
| if error in self._errors: |
| # ... but we saw it in earlier reports, e.g. previous UI test |
| cur_report_errors.add("This error was already printed in " |
| "some other test, see 'hash=#%016X#'" % \ |
| error.error_hash()) |
| else: |
| # ... and we haven't seen it in other tests as well |
| self._errors.add(error) |
| cur_report_errors.add(error) |
| |
| suppcountlist = parsed_string.getElementsByTagName("suppcounts") |
| if len(suppcountlist) > 0: |
| suppcountlist = suppcountlist[0] |
| for node in suppcountlist.getElementsByTagName("pair"): |
| count = get_text_of(node, "count") |
| name = get_text_of(node, "name") |
| self._suppressions[name] += int(count) |
| |
| return cur_report_errors |
| |
| def leaks_files_in_results_directory(self): |
| return self._filesystem.glob(self._filesystem.join(self._source_dir, "drt-*-leaks.xml")) |
| |
| def clean_leaks_files_from_results_directory(self): |
| # Remove old Valgrind xml files before starting this run. |
| leaks_files = self.leaks_files_in_results_directory() |
| for f in leaks_files: |
| self._filesystem.remove(f) |
| |
| def parse_and_print_leaks_detail(self, leaks_files): |
| for f in leaks_files: |
| leaks_output = self._filesystem.read_binary_file(f) |
| detected_leaks = self._parse_leaks_output(leaks_output) |
| |
| _log.info("-----------------------------------------------------") |
| _log.info("Suppressions used:") |
| _log.info(" count name") |
| for (name, count) in sorted(self._suppressions.items(), key=lambda (k, v): (v, k)): |
| _log.info("%7d %s" % (count, name)) |
| _log.info("-----------------------------------------------------") |
| |
| if self._errors: |
| _log.info("Valgrind detected %s leaks:" % len(self._errors)) |
| for leak in self._errors: |
| _log.info(leak) |
