tree 7a30b551fe2c60c4eae9e614f0a2091b55fcbf21
parent 33913ebfb5ca699d09459227284b3d324343fa43
author Christopher Ferris <cferris@google.com> 1500493065 -0700
committer Christopher Ferris <cferris@google.com> 1500500146 +0000

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