tree 93dfa2738b4e5caefbc599b68600b18f506c9464
parent 955434d2fce94b8fe4aa392411e768150ecb874c
author Yabin Cui <yabinc@google.com> 1570489076 -0700
committer Yabin Cui <yabinc@google.com> 1570490287 -0700

simpleperf: create one map for each jit symbol.

JIT debug interface in ART regularly repacks jit symbols, making
overlapped jit symfile maps:
For example, jit symfile A contains many symbols, in addr range [0xa000, 0xb000),
but excluding [0xa100, 0xa110]. And jit symfile B contains only one symbol, in
addr range [0xa100, 0xa108).
So jit symfile A and B have overlapped addr range, while the symbols in
them are all valid.

Simpleperf can't keep maps with overlapped addr range, thus fails to unwind in
this situation.
Fix it by creating one map for each jit symbol instead of jit symfile.

Bug: none
Test: run simpleperf_unit_test.
Test: run test.py TestRecordingRealApps.test_recording_displaybitmaps.
Change-Id: I8392bb331c98830dc9a98031a08c0567dd66ff4b