[metrics] Add ClassLoadingTotalTime counter
This keeps track of how much time we spend in the class loading
process.
Testing instructions:
adb shell setprop dalvik.vm.metrics.write-to-log true
adb shell stop && adb shell start
adb logcat -e "ART internal metrics"
Observer ClassLoadingTotalTime in internal metrics report. Example:
*** ART internal metrics ***
Metadata:
timestamp_since_start_ms: 34555
session_id: 2710488913234081424
uid: 10065
compilation_reason: Unknown
compiler_filter: (unspecified)
Metrics:
ClassLoadingTotalTime: count = 120959
ClassVerificationTotalTime: count = 216121
JitMethodCompileTime: range = 0...1000000, buckets: 4482,10,2,3
*** Done dumping ART internal metrics ***
Bug: 177591870
Test: Manual, see above
Change-Id: I24f0c94ab6af5e6cd9b0dc32122f2905c36cf3b7
3 files changed