Add way to print JIT related info at shutdown
Added a runtime option called -XX:DumpJITInfoOnShutdown with prints
various interesting JIT statistics during the shutdown of the runtime
if enabled.
Example of running EvaluateAndApplyChanges with the option:
I art : Code cache size=427KB data cache size=84KB num methods=1598
I art : Start Dumping histograms for 1598 iterations for JIT timings
I art : Compiling: Sum: 727.850ms 99% C.I. 135us-4402us Avg: 455.475us Max: 15567us
I art : Verifying: Sum: 191.074ms 99% C.I. 19us-1450.500us Avg: 119.570us Max: 5142us
I art : TrimMaps: Sum: 62.053ms 99% C.I. 13us-199.374us Avg: 38.831us Max: 10058us
I art : MakeExecutable: Sum: 11.153ms 99% C.I. 4us-47us Avg: 6.979us Max: 47us
I art : Initializing: Sum: 7.991ms 99% C.I. 1us-49.781us Avg: 5us Max: 4852us
I art : Done Dumping histograms
Bug: 17950037
Change-Id: I23538b24f947e5f6934f55579b8baa9d806eb3d5
diff --git a/runtime/runtime_options.def b/runtime/runtime_options.def
index d072ffa..8775f8d 100644
--- a/runtime/runtime_options.def
+++ b/runtime/runtime_options.def
@@ -59,6 +59,7 @@
RUNTIME_OPTIONS_KEY (MillisecondsToNanoseconds, \
LongGCLogThreshold, gc::Heap::kDefaultLongGCLogThreshold)
RUNTIME_OPTIONS_KEY (Unit, DumpGCPerformanceOnShutdown)
+RUNTIME_OPTIONS_KEY (Unit, DumpJITInfoOnShutdown)
RUNTIME_OPTIONS_KEY (Unit, IgnoreMaxFootprint)
RUNTIME_OPTIONS_KEY (Unit, LowMemoryMode)
RUNTIME_OPTIONS_KEY (bool, UseTLAB, false)