digit@chromium.org f72b9c6ff4 Make Linux signal handler more robust.
Breakpad can be used on processes where a mistaken
library saves then restores one of our signal handlers
with 'signal' instead of 'sigaction'.

This loses the SA_SIGINFO flag associated with the 
Breakpad handler, and in some cases (e.g. Android/ARM
kernels), the values of the 'info' and 'uc' parameters
that ExceptionHandler::SignalHandler() receives will
be completely bogus, leading to a crash when the function
is executed (and of course, no minidump generation).

To work-around this, have SignalHandler() check the state
of the flag. If it is incorrectly unset, re-register with
'sigaction' and the correct flag, then return. The signal
will be re-thrown, and this time the function will be
called with the correct values.
Review URL: https://breakpad.appspot.com/481002

git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@1067 4c0a9323-5329-0410-9bdc-e9ce6186880e
2012-10-09 18:03:25 +00:00
2012-10-09 17:15:06 +00:00
2006-09-20 21:16:16 +00:00
2012-10-09 17:15:06 +00:00
2012-10-09 17:15:06 +00:00
2010-08-13 18:49:03 +00:00
2012-09-05 08:08:53 +00:00

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


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Getting started in 32-bit mode (from trunk)
Configure: CXXFLAGS=-m32 CFLAGS=-m32 CPPFLAGS=-m32 ./configure
    Build: make
     Test: make check
  Install: make install

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


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To request change review:
0. Get access to a read-write copy of source.
   Owners at http://code.google.com/p/google-breakpad/ are able to grant
   this access.

1. Check out a read-write copy of source using instructions at
   http://code.google.com/p/google-breakpad/source/checkout

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. Download http://codereview.appspot.com/static/upload.py

4. Run upload.py from the 'src' directory:
   upload.py --server=breakpad.appspot.com

   You will be prompted for credential and a description.

5. At http://breakpad.appspot.com 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

6. When applying code review feedback, specify the '-i' option when running
   upload.py again and pass the issue number so it updates the existing issue,
   rather than creating a new one.
   Be sure to rerun upload.py from the same directory as you did for previous
   uploads to allow for proper diff calculations.
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