[art] Add GetObjectsAllocated and TotalTimeWaitingForGc APIs
It's difficult to analyze sluggish issue due to excessive GC.
So, I would like to add APIs for GC status check.
GetObjectsAllocated : return count of allocated objects.
how to use : Debug.getRuntimeStat("art.gc.objects-allocated)
TotalTimeWaitingForGc : return total waiting time for GC.
how to use : Debug.getRuntimeStat("art.gc.total-time-waiting-for-gc")
This must be submitted with the libcore code.
Test: check value using Debug.getRuntimeStat()
Change-Id: I2e865957ddb7e8cb5ac955e65a18d2aaffe4c672
diff --git a/runtime/gc/heap.h b/runtime/gc/heap.h
index 5d0ba8f..53eed6b 100644
--- a/runtime/gc/heap.h
+++ b/runtime/gc/heap.h
@@ -850,6 +850,9 @@
uint64_t GetBlockingGcTime() const;
void DumpGcCountRateHistogram(std::ostream& os) const REQUIRES(!*gc_complete_lock_);
void DumpBlockingGcCountRateHistogram(std::ostream& os) const REQUIRES(!*gc_complete_lock_);
+ uint64_t GetTotalTimeWaitingForGC() const {
+ return total_wait_time_;
+ }
// Perfetto Art Heap Profiler Support.
HeapSampler& GetHeapSampler() {
diff --git a/runtime/native/dalvik_system_VMDebug.cc b/runtime/native/dalvik_system_VMDebug.cc
index d1683a9..5c8bd84 100644
--- a/runtime/native/dalvik_system_VMDebug.cc
+++ b/runtime/native/dalvik_system_VMDebug.cc
@@ -313,6 +313,8 @@
kArtGcBlockingGcTime,
kArtGcGcCountRateHistogram,
kArtGcBlockingGcCountRateHistogram,
+ kArtGcObjectsAllocated,
+ kArtGcTotalTimeWaitingForGc,
kNumRuntimeStats,
};
@@ -353,6 +355,14 @@
heap->DumpBlockingGcCountRateHistogram(output);
return env->NewStringUTF(output.str().c_str());
}
+ case VMDebugRuntimeStatId::kArtGcObjectsAllocated: {
+ std::string output = std::to_string(heap->GetObjectsAllocated());
+ return env->NewStringUTF(output.c_str());
+ }
+ case VMDebugRuntimeStatId::kArtGcTotalTimeWaitingForGc: {
+ std::string output = std::to_string(heap->GetTotalTimeWaitingForGC());
+ return env->NewStringUTF(output.c_str());
+ }
default:
return nullptr;
}