tree b76a03e045773f242726bd07846edb509b0b3ef5
parent e59cb816470be6bc8129fa59b192109402f7b6ab
author Andreas Gampe <agampe@google.com> 1496442895 -0700
committer Andreas Gampe <agampe@google.com> 1496697562 +0000

ART: Add method names to lock-contention samples

Obfuscators and optimizers will strip reliable source info from
dex files, making the traditional source file name and line number
emitted in lock-contention samples not very useful.

Add the method names to the sample. While this significantly
increases the size of the sample, it allows mapping obfuscated
code back to the source, pinpointing the involved locks.

Contention samples:
Before:
[com.google.android.gms,1,main,956,:com.google.android.gms,6,AssetManager.java,-2,100]
After:
[com.google.android.gms,1,main,956,:com.google.android.gms,6,bzv com.google.android.chimera.container.ConfigurationManager.b(),AssetManager.java,-2,int android.content.res.AssetManager.getStringBlockCount(),100]

Bug: 62241642
Test: m
Test: m test-art-host
Test: Device boots
Test: Manual inspection of reports
Change-Id: I8d7a65e16e022d53aba1ced2fdb202f24bced516