commit cdc11a390138765046c8d730708b86c63aa3c488
author Yabin Cui <yabinc@google.com> Tue Mar 20 15:29:03 2018 -0700
committer Yabin Cui <yabinc@google.com> Wed Mar 21 11:25:08 2018 -0700
tree 922d8d40634818769985fff131605ae35fbf6c26
parent dd4f07b1396db2b95d9dddad03b743eaca462c53

simpleperf: support profiling jited java code.

1. For each jit symfile, generate a Mmap2Record with a special flag
PROT_JIT_SYMFILE_MAP.
2. Call ReadMmapEventData() before dumping jit Mmap2Records, to keep
the order of samples and mmap records.
3. Handle finding symbols from maps with PROT_JIT_SYMFILE_MAP flags.
4. Pass PROT_JIT_SYMFILE_MAP flag to libunwindstack, to unwind
through jited methods.

Bug: http://b/73127105
Test: run simpleperf manually.
Test: run simpleperf_unit_test.
Change-Id: I2b2f77ff457f7eb2f10193e987a181e4791a29ee