| commit | 3386ebade2d28fd3ef68c576bb0375bd226a1320 | [log] [tgz] |
|---|---|---|
| author | David Srbecky <dsrbecky@google.com> | Wed Mar 14 21:30:25 2018 +0000 |
| committer | Christopher Ferris <cferris@google.com> | Thu Mar 29 14:47:13 2018 +0000 |
| tree | 53f2e511a1e7b507239ab5c89cce0c50df474636 | |
| parent | 324e27d284ef5061746a79ae22ed608460c985e9 [diff] |
Cache DWARF location rules for a given pc. Decoding the DWARF opcodes is expensive so make sure we cache it. This speeds unwinding in simpleperf by over a factor of 3x. Add unit tests for this new behavior. Bug: 77258731 Test: libbacktrace/libunwindstack unit tests on host and target. Test: Ran debuggerd -b on various processes on target. Change-Id: Ia516c0fa5d3e5f76746190bb4b6fdf49fd1c9388