Commit e260e543 authored by Albert Mingkun Yang's avatar Albert Mingkun Yang
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ART: add GC live ratio metrics to GC performance 

Record average GC live ratio (copied bytes over allocated bytes in
form-space), and GC count for both minor and major ConcurrentCopy GC,
and print both if DumpGCPerformanceOnShutdown is set.

Test: Run art with -XX:DumpGCPerformanceOnShutdown on some benchmarks.
Bug: 112187497
Change-Id: I587f92d847b899c81bf7a6d7303f7b54527c6f33
parent 9c4bb457
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