Commit Graph

7 Commits

Author SHA1 Message Date
Christopher Ferris 17e91d44ed Rewrite libbacktrace using C++.
The old code was essentially trying to be C++ in C and was awkward. This
change makes it all objects with a thin layer that C code can use.

There is a C++ backtrace object that is not very useful, this code will
replace it.

This change also includes moving the backtrace test to a gtest, and adding
coverage of all major functionality.

Bug: 8410085
Change-Id: Iae0f1b09b3dd60395f71ed66010c1ea5cdd37841
2013-10-28 17:55:25 -07:00
Christopher Ferris 365e4ae745 Update debuggerd to use libbacktrace.
Remove all of the code in debuggerd that uses libcorkscrew directly
and replace with libbacktrace.

Also do a bit of refactoring to clean up some functions that were
passing around variables that weren't used.

Bug: 8410085

Change-Id: I27da4fbe3f12ce38a85b4432fc1119984c9c391b
2013-10-03 11:07:56 -07:00
Christopher Tate 7716aef138 Uploaded native crash dumps do not include memory contents
Also fixed the LOG() macro to actually write to the log again, tracking
the change in _LOG() argument semantics.

Bug 8322568

Change-Id: I79330c85c26d3ffb734315b6d0f2c0bb80bd234a
2013-04-05 16:30:15 -07:00
Christopher Tate ded2e5acfc debuggerd now notifies the Activity Manager about native crashes
The Activity Manager sets up a permission-guarded domain socket, which
debuggerd connects to when a crash happens.  If this is successful,
the daemon then mirrors the logged crash report to that socket, then
closes it.

Bug 8322568

Change-Id: Ife0c772a628ef82e8457094e511ce1edbfe57460
2013-04-01 10:37:24 -07:00
Elliott Hughes c463d2cf9c Fix debuggerd's use of readdir_r(3).
Change-Id: I1b178af054cefebfb774320e4b4699d6dc8bbb01
2012-10-26 16:47:09 -07:00
Jeff Brown 9cec175c66 Remove a stray newline in the backtrace output.
Bug: 6615693
Change-Id: I1ac1746286afb77c3f5c4042c4592333ebb08a51
2012-06-08 14:21:51 -07:00
Jeff Brown 053b865412 Enhance native stack dumps.
Provides a new mechanism for dumpstate (while running as root)
to request that debuggerd dump the stacks of native processes that
we care about in bug reports.  In this mode, the backtrace
is formatted to look similar to a Dalvik backtrace.

Moved the tombstone generating code into a separate file to
make it easier to maintain.

Fixed a bug where sometimes the stack traces would be incomplete
because we were not waiting for each thread to stop after issuing
PTRACE_ATTACH, only the main thread.  So sometimes we were missing
traces for some threads.

Refactored the logging code to prevent accidentally writing data
to logcat when explicitly dumping a tombstone or backtrace from the
console.

Only root or system server can request to dump backtraces but
only root can dump tombstones.

Bug: 6615693
Change-Id: Ib3edcc16f9f3a687e414e3f2d250d9500566123b
2012-06-08 13:29:23 -07:00