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Ting-Yuan (Leo) Huang 41b91d064e Recover memory mappings before writing dump on ChromeOS 
On Linux, breakpad relies on /proc/[pid]/maps to associate symbols from
addresses. ChromeOS' hugepage implementation replaces some segments
with anonymous private pages, which is a restriction of current
implementation in Linux kernel at the time of writing. Thus, breakpad
can no longer symbolize addresses from those text segments replaced by
hugepages.

This patch tries to recover the mappings. Because hugepages are always
inserted in between some .text sections, it tries to infer the names and
offsets of the segments, by looking at segments immediately precede and
succeed them.

For example, a text segment before hugepage optimization
  02001000-03002000 r-xp /opt/google/chrome/chrome

can be broken into
  02001000-02200000 r-xp /opt/google/chrome/chrome
  02200000-03000000 r-xp
  03000000-03002000 r-xp /opt/google/chrome/chrome

BUG=crbug.com/628040
R=mark@chromium.org

Review URL: https://codereview.chromium.org/2161713002 .

Patch from Ting-Yuan (Leo) Huang <laszio@chromium.org>.
2016-07-18 20:11:07 -04:00
android sample_app: enable C++11 for Android builds 2016-04-04 21:35:26 -04:00
autotools autotools: regen w/latest versions 2016-01-25 19:29:06 -05:00
docs Fix the Linux Starter Guide docs 2016-03-22 14:03:09 -04:00
m4 Check for C++11 support in the configure script. 2016-01-08 00:27:48 -08:00
scripts travis: note misbehavior by coverity addon when throttled 2016-06-24 05:09:28 -04:00
src Recover memory mappings before writing dump on ChromeOS 2016-07-18 20:11:07 -04:00
.gitignore build: clean up .dwo files 2016-01-25 18:40:56 -05:00
.travis.yml travis: add coverity scan integration 2016-06-21 11:14:28 -04:00
aclocal.m4 Fix a dependency issue in automake 2016-04-12 14:55:18 -04:00
AUTHORS Make build system less annoying (#8) r=bryner 2006-08-30 20:05:05 +00:00
breakpad-client.pc.in make "make install" also install headers and pkgconfig files 2014-08-27 02:10:55 +00:00
breakpad.pc.in make "make install" also install headers and pkgconfig files 2014-08-27 02:10:55 +00:00
ChangeLog Initial import, which includes the Windows client-side dump_syms tool, and 2006-08-25 21:14:45 +00:00
codereview.settings Change codereview.settings to point to new repo URL. 2015-09-01 17:13:51 -07:00
configure only build dump_syms_mac for x86 hosts 2016-01-27 16:45:21 -05:00
configure.ac only build dump_syms_mac for x86 hosts 2016-01-27 16:45:21 -05:00
DEPS linux-syscall-support: pull in latest version 2016-06-14 14:17:56 -04:00
INSTALL autoreconf -f -i 2013-12-10 17:53:50 +00:00
LICENSE Renaming file COPYING to LICENSE and appending the disclaimer from src/common/convert_UTF.h to LICENSE. 2014-02-27 19:23:16 +00:00
Makefile.am Adding support for overlapping ranges to RangeMap. 2016-06-05 22:41:10 -07:00
Makefile.in Adding support for overlapping ranges to RangeMap. 2016-06-05 22:41:10 -07:00
NEWS Initial import, which includes the Windows client-side dump_syms tool, and 2006-08-25 21:14:45 +00:00
README.ANDROID Update symbol file documentation links. 2016-06-10 06:29:06 -04:00
README.md travis: add coverity scan integration 2016-06-21 11:14:28 -04:00

README.md

Breakpad

Breakpad is a set of client and server components which implement a crash-reporting system.

Getting started (from master)

  1. First, download depot_tools and ensure that they're in your PATH.

  2. Create a new directory for checking out the source code (it must be named breakpad).

    mkdir breakpad && cd breakpad

  3. Run the fetch tool from depot_tools to download all the source repos.

    fetch breakpad
cd src

  4. Build the source.

    ./configure && make

    You can also cd to another directory and run configure from there to build outside the source tree.

    This will build the processor tools (src/processor/minidump_stackwalk, src/processor/minidump_dump, etc), and when building on Linux it will also build the client libraries and some tools (src/tools/linux/dump_syms/dump_syms, src/tools/linux/md2core/minidump-2-core, etc).

  5. Optionally, run tests.

    make check

  6. Optionally, install the built libraries

    make install

If you need to reconfigure your build be sure to run make distclean first.

To update an existing checkout to a newer revision, you can git pull as usual, but then you should run gclient sync to ensure that the dependent repos are up-to-date.

To request change review

  1. Follow the steps above to get the source and build it.

  2. Make changes. Build and test your changes. For core code like processor use methods above. For linux/mac/windows, there are test targets in each project file.

  3. Commit your changes to your local repo and upload them to the server. http://dev.chromium.org/developers/contributing-code e.g. git commit ... && git cl upload ... You will be prompted for credential and a description.

  4. At https://codereview.chromium.org/ you'll find your issue listed; click on it, and select Publish+Mail, and enter in the code reviewer and CC google-breakpad-dev@googlegroups.com