commit eb4a6dbf5c6697c953942d079744c05da0c09d51
author Christopher Ferris <cferris@google.com> Wed Jul 19 12:37:45 2017 -0700
committer Christopher Ferris <cferris@google.com> Wed Jul 19 21:35:46 2017 +0000
tree 7a30b551fe2c60c4eae9e614f0a2091b55fcbf21
parent 33913ebfb5ca699d09459227284b3d324343fa43

Speed up StepIfSignalHandler path.

The StepIfSignalHandler code reads from the process memory object, which
is currently the slowest way to read memory. Change the code to read from
the elf memory object which will almost always be a memory mapped file and
should be really fast.

Also, move the tests for StepIfSignalHandler to its own file.

Bug: 23762183

Test: Unit tests pass.
Change-Id: I1100b50554e5ef736a87babd484f3f34e9071caa

libunwindstack/Android.bp

diff --git a/libunwindstack/Android.bp b/libunwindstack/Android.bp
index 94f0f8e..04c4cfa 100644
--- a/libunwindstack/Android.bp
+++ b/libunwindstack/Android.bp
@@ -115,6 +115,7 @@
         "tests/MemoryRangeTest.cpp",
         "tests/MemoryRemoteTest.cpp",
         "tests/MemoryTest.cpp",
+        "tests/RegsStepIfSignalHandlerTest.cpp",
         "tests/RegsTest.cpp",
         "tests/SymbolsTest.cpp",
         "tests/UnwindTest.cpp",