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externals/breakpad/docs/mozilla_brown_bag_talk.md

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+# Breakpad Crash Reporting for Mozilla
+
+*   January 24, 2007
+    *   Links updated February 14, 2007
+*   Mozilla HQ
+*   Mark Mentovai
+*   Brian Ryner
+
+## What is a crash reporter?
+
+*   Enables developers to analyze crashes that occur in the wild
+*   Produces stack backtraces that help identify how a program failed
+*   Offers higher-level data aggregation (topcrashes, MTBF statistics)
+
+## Motivation
+
+*   Talkback is proprietary and unmaintained
+*   Smaller open-source projects have few options
+*   Larger projects need flexibility and scalability
+
+## Design Options
+
+*   Stackwalking done on client
+    *   Apple CrashReporter
+    *   GNOME BugBuddy
+*   Client sends memory dump
+    *   Talkback
+    *   Windows Error Reporting
+    *   Breakpad
+
+## Goals
+
+*   Provide libraries around which systems can be based
+*   Open-source
+*   Cross-platform
+    *   Mac OS X x86, PowerPC
+    *   Linux x86
+    *   Windows x86
+*   No requirement to distribute symbols
+
+## Client Libraries
+
+*   Exception handler installed at application startup
+    *   Spawns a separate thread
+*   Minidump file written at crash time
+    *   Format used by Windows debuggers
+*   Separate application invoked to send
+    *   HTTP[S](S.md) POST, can include additional parameters
+
+## Symbols
+
+*   Cross-platform symbol file format
+*   Contents
+    *   Function names
+    *   Source file names and line numbers
+    *   Windows: Frame pointer omission data
+    *   Future: parameters and local variables
+*   Symbol conversion methods
+
+## Processor
+
+*   Examines minidump file and invokes stackwalker
+*   Symbol files requested from a SymbolSupplier
+*   Produces stack trace
+*   Output may be placed where convenient
+
+## Intergation
+
+*   Breakpad client present in Gran Paradiso Alpha 1 for Windows
+    *   Disabled by default
+    *   Enable with `MOZ_AIRBAG`
+*   Proof-of-concept collector
+    *   http://mavra.perilith.com/~luser/airbag-collector/list.pl
+*   Other platforms coming soon
+
+## More Information
+
+*   Project home: https://chromium.googlesource.com/breakpad/breakpad
+*   Mailing lists
+    *   [google-breakpad-dev@googlegroups.com](http://groups.google.com/group/google-breakpad-dev/)
+    *   [google-breakpad-discuss@googlegroups.com](http://groups.google.com/group/google-breakpad-discuss/)
+*   Ask me (irc.mozilla.org: mento)