system_core - Fork of system/core

	Commit message (Collapse)	Author	Age	Files	Lines
*	Move libbacktrace off cutils.	Elliott Hughes	2018-07-11	1	-6/+7
\| \| \| \| \| \| \| \| \| \| \|	There's still <cutils/atomic.h> in a test, but I don't understand why that isn't just std::atomic. Also add a shared tgkill wrapper to libbase. Bug: N/A Test: ran tests Change-Id: Idd4baa1e1670a84b3a8f35803cc5ffe5aae008a6
*	Use new unwinder for offline in libbacktrace.	Christopher Ferris	2018-01-29	1	-1/+1
\| \| \| \| \| \| \| \| \| \| \| \| \|	libbbacktrace changes: - Completely rewrite the BacktraceOffline class to use the new unwinder. - Modify the test data to save ucontext_t data instead of unw_context data. - Convert the previous tests from unw_context data to ucontext_t data. Bug: 65682279 Test: New unit tests pass in libunwindstack. Test: All offline tests continue to pass. Change-Id: I540345c304b20199d46deeb0349a0638a0f3ab2f
*	Change all uintptr_t to uint64_t in API.	Christopher Ferris	2018-01-18	1	-2/+2
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	In order to support the offline unwinding properly, get rid of the usage of non-fixed type uintptr_t from all API calls. In addition, completely remove the old local and remote unwinding code that used libunwind. The next step will be to move the offline unwinding to the new unwinder. Bug: 65682279 Test: Ran unit tests for libbacktrace/debuggerd. Test: Ran debuggerd -b on a few arm and arm64 processes. Test: Ran crasher and crasher64 and verified tombstones look correct. Change-Id: Ib0c6cee3ad6785a102b74908a3d8e5e93e5c6b33
*	libbacktrace: export offline unwinding failures.	Yabin Cui	2017-12-15	1	-7/+7
\| \| \| \| \| \| \| \|	This is to help debugging different offline unwiding failures. Bug: http://b/69383534 Test: run backtrace_test. Change-Id: I5ed4837027a9f17d032925e97e9f5927161444b3
*	Use async safe logging in signal handlers.	Christopher Ferris	2017-05-04	1	-8/+9
\| \| \| \| \| \| \| \|	Test: Boot on bullhead. Test: Ran the libbacktrace tests on bullhead. Test: Added a temporary log message in the signal handler, and ran the Test: backtrace tests. Change-Id: I0a6888c9f311af2c8cc7fbb4929315911bd2bb3c
*	Restore errno in signal handlers.	Christopher Ferris	2017-03-10	1	-0/+20
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	There was a problem where errno could be set in a signal handler and cause bugs if other system calls were interrupted. There isn't strong evidence this is causing any issues, but add this proactively. Bug: 31448909 Test: Ran the backtrace unit tests, backtraces few random processes, Test: forced the ANR path for some zygote based processes. Test: Ran the art ThreadStress test a few times. Change-Id: I5abc9e330a5e86cea7015e2362f66044c6bc37d0
*	Add error reporting mechanism for failing Unwind.	Christopher Ferris	2016-03-10	1	-2/+20
\| \| \| \| \| \| \| \| \| \| \| \|	Remove the logging of an error if a thread disappears before the unwind can begin. This can happen, so allow the caller to determine if this is really a problem worth logging. Bug: 27449879 (cherry picked from commit 206a3b9798e3622c906a3cafdb113c271c1c927c) Change-Id: If9e7cfeb6eb7b122679a734c1a9eacee8354ef18
*	Fix libbacktrace host build.	Yabin Cui	2015-12-07	1	-2/+0
\| \| \| \| \| \| \|	On host build, libbacktrace relies on libcutils to provide gettid() function. Change-Id: Iad83384ea699ca024b71b73cef26755287c9e6fe
*	Add a logging handler on timeout.	Christopher Ferris	2015-09-03	1	-1/+17
\| \| \| \| \| \| \| \| \|	If the signal handler doesn't fire in the given time when trying to unwind a thread, put on a logging handler. This prevents crashes if the signal does eventually fire. Bug: 23783762 Change-Id: Ib7abb36b71d079a7043117697c41b535319586fd
*	Modify the code to avoid potential deadlocks.	Christopher Ferris	2015-06-01	1	-12/+28
\| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \| \|	If the signal to dump a thread is never delivered, then it's possible for a deadlock. The signal handler is responsible for unlocking and deleting the ThreadEntry created for the pid/tid combination. This means if the signal is lost, the ThreadEntry gets stuck locked and never deleted. If a second attempt to get a backtrace of this thread occurs, there is a deadlock. Also, decrease the timeout from 10 seconds to 5 seconds. The original 10 seconds was because the unwind was actually done in the signal handler. Now the signal handler does nothing but copy the ucontext structure and let the caller do the unwind. Bug: 21086132 Change-Id: Idc735dbf6147ec879d35bd4f034c5d227e26a98d
*	Prevent crashes if a map cannot be created.	Christopher Ferris	2015-05-14	1	-0/+5
\| \| \| \| \| \| \| \| \| \| \| \| \| \|	Under some conditions, /proc/<pid>/maps might return nothing. If we try and unwind in this case, we'll crash. Check this case and fail the unwind. Add checks that no other functions try and use map_ without checking for nullptr. Add logging when an unwind fails so it's clear what happened. Bug: 21162746 Change-Id: I56ce51dda0cfc9db20475a441f118108196aa07c
*	Remove libbacktrace definition of gettid.	Dan Albert	2015-04-30	1	-0/+2
\| \| \| \| \| \| \|	Also simplifies the Darwin implementation of gettid, because apparently libbacktrace had a better way of doing it. Change-Id: I9e14f9176b167405a5aaa5b8a0db0327c7126271
*	Discards frames for code within library.	Christopher Ferris	2015-04-01	1	-0/+11
\| \| \| \| \| \| \| \|	When doing a local unwind, do not include the frames that come from either libunwind or libbacktrace. Bug: 11518609 Change-Id: I0ec8d823aebbfa0903e61b16b7e5663f3fd65e78
*	Refactor the code.	Christopher Ferris	2015-03-31	1	-0/+144
	The object hierarchy was confusing and convoluted. This removes a lot of unnecessary code, and consolidates the BacktraceCurrent and BacktraceThread code into BacktraceCurrent. Change-Id: I01c8407d493712a48169df49dd3ff46db4a7c3ae