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JitDebug and DexFiles use the same linked-list interface,
the only difference is in the type of file they contain.
Create base class to share the common code.
Test: libunwindstack_unit_test
Test: art/test.py -r -b --host -t 137
Change-Id: Ibc200250e6c6c36dd2f930c368dde5caf6a03268
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Reduce the amount of repeated code using templates.
Test: libunwindstack_unit_test
Change-Id: I92ab53b050bcb877974dff95496a1fc41cbb41c0
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These helpers will make it easier to replace the
implementation without affecting users of the classes.
The helpers take the arch, which ensures it is set and
it allows to return templated variant based on the arch.
Test: art/test.py -r -b --host -t 137-cfi
Test: libunwindstack_test
Change-Id: I6e09ce29e39faa57c95fc8a3e86f2260bf91a76e
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Trivial rename separated from future CL.
The two interfaces are almost identical.
Bring the API closer so we can share code.
Test: libunwindstack_test
Change-Id: I5263b3d2a50ee0b32a07968f426c1513b4c540bf
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This reverts commit 91dc724d5ba73d60cc0f7c2b01e559e899ff3a87.
Reason for revert: Breaks ART tests, reverting to investigate.
Change-Id: I1bb905407e87cbd4f832646651133a9caf6fcfc8
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Update the entries only when the list is modified by the runtime.
Check that the list wasn't concurrently modified when being read.
Bug: 124287208
Test: libunwindstack_test
Test: art/test.py -b --host -r -t 137-cfi
Change-Id: I87ba70322053a01b3d5be1fdf6310e1dc21bb084
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Actually make the destructor virtual so that objects in
UnwinderFromPid get freed.
Also, explicitly make the DexFiles and JitDebug destructors virtual.
Bug: 123099840
Test: Ran UnwindTest.local_from_pid thousands of times.
Change-Id: I8bf11c0eb3587fa82f5f14f4723ea5c91da0fd46
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To avoid a case where a malicious app might try and trick the system to
create an elf and register object that mismatches, always verify that they
are the same arch.
Test: Ran unit tests.
Change-Id: I66978e9e02f8e4f396856912e7019528ead4838e
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If multiple threads are unwinding at the same time, new maps that contain
the global variables for dex files and jit information are created. This
leads to threads creating more new maps that then get searched, then
more maps, then more searching until virtual address space exhaustion.
Fix this so that we only search maps that have a corresponding rw map that
could contain the global memory.
Small refactor to combine the code to search for global variables into
one class that both classes inherit from.
Modify unit tests for the new pattern checking.
Bug: 117761427
Test: Ran unit tests for libunwindstack/libbacktrace/simpleperf.
Test: Ran art 004-ThreadStress that used to fail.
Change-Id: I837ca6b9d0383100079de090bc7d019598e0cdfe
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Changes:
- New JitDebug class to handle all of the jit gdb interface.
- Add unit tests for all, along with new offline test using debug data.
- Add new Memory type called MemoryOfflineParts that has multiple
MemoryOffline objects to support the offline test.
- Update the tools to use the JitDebug object.
- Modify libbacktrace to use the JitDebug, but only looking in libart.so
and libartd.so.
- Change the Format32Bits to Is32Bit since it's more accurate and I use
it in a different context where original name didn't make sense.
- Add a new function to find global variables in an elf file
(GetGlobalVariable).
- Add a new function to determine if a pc is valid for this elf (IsValidPc).
Bug: 68396769
Test: Ran new unit tests. Added new offline test that uses jit debug data.
Test: Ran art test that generates jit data and verified a crash unwinds
Test: through the jit data.
Change-Id: I6e7ee2f5bab2242028a06feece156dff21c0a974
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