On Dec 19, 2007, at 4:38 PM, Steve Checkoway wrote:
On Dec 19, 2007, at 3:02 PM, Andre-John Mas wrote:
Is there any way for a developer to find out crashes related to their
software via Apple? It would be ideal if there was service that I
could
sign up to as a developer or if MacOS X could send the log to the
the application developer, though I realise the latter might be
considered a 'security risk'.
I sort of doubt it. It's probably easiest to write your own crash
handler (or modify a free one, such as the one I helped write) and
handle user crashes with backtracing yourself. That way you can also
include other information that is useful for tracking down bugs.
Easiest way we found was to catch the signal, open a pipe, fork a
new process, reexec with a special argument so it knows to run the
crash handler code, and write(2) the data to the child process. Then
the child process can do things like look up symbols, make up a nice
crash report and then inform the user who then has the choice to
send it to you or not.
For leopard, you catch the Mach exception rather than installing a
signal handler, and after you are done doing your private crash
reporting stuff, you forward the exception on, it generates a signal,
the process crashes, and CrashReporter grabs it from there, just like
normally.
There was an example of that on this list about 3 weeks back.
-- Terry
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