platform_system_core

History

Christopher Ferris e328673a30 Add method to detect remote read function to use. The process_vm_read function is much faster than ptrace, but sometimes that will not work on a remote process. Modify the libunwindstack MemoryRemote object to figure out which one it can use. Wrote new unit test to verify this checking behavior. Modify libbacktrace so that the read from libunwind is used instead of using the default ptrace calls. Add some benchmarks to libbacktrace to compare the two different methods. Test: Ran unit tests libbacktrace/libunwindstack/debuggerd. Test: Ran debuggerd -b <SYSTEM_SERVER_PID> Test: Ran debuggerd -b <MEDIACODEC PID> Test: Ran debuggerd -b <RANDOM_PID> Test: Used crasher to create tombstones and verified stack data is Test: dumped properly. Change-Id: If75ca238289532dd8e1de430d569cabb2523380a	2017-12-07 19:00:00 -08:00
..
unwindstack	Add method to detect remote read function to use.	2017-12-07 19:00:00 -08:00

Christopher Ferris e328673a30 Add method to detect remote read function to use.

The process_vm_read function is much faster than ptrace, but sometimes
that will not work on a remote process. Modify the libunwindstack
MemoryRemote object to figure out which one it can use.

Wrote new unit test to verify this checking behavior.

Modify libbacktrace so that the read from libunwind is used instead of
using the default ptrace calls.

Add some benchmarks to libbacktrace to compare the two different methods.

Test: Ran unit tests libbacktrace/libunwindstack/debuggerd.
Test: Ran debuggerd -b <SYSTEM_SERVER_PID>
Test: Ran debuggerd -b <MEDIACODEC PID>
Test: Ran debuggerd -b <RANDOM_PID>
Test: Used crasher to create tombstones and verified stack data is
Test: dumped properly.
Change-Id: If75ca238289532dd8e1de430d569cabb2523380a

2017-12-07 19:00:00 -08:00

unwindstack

Add method to detect remote read function to use.

2017-12-07 19:00:00 -08:00