Add thread suspend histogram
Helps measure time to suspend.
Example output (maps after a few seconds):
suspend all histogram: Sum: 2.806ms 99% C.I. 2us-1090.560us Avg: 43.843us Max: 1126us
Change-Id: I7bd9dd3b401fb3e3059e8718556d60910e541611
diff --git a/runtime/base/histogram-inl.h b/runtime/base/histogram-inl.h
index b329a31..812ed86 100644
--- a/runtime/base/histogram-inl.h
+++ b/runtime/base/histogram-inl.h
@@ -35,10 +35,13 @@
DCHECK_GT(new_max, max_);
GrowBuckets(new_max);
}
-
BucketiseValue(value);
}
+template <class Value> inline void Histogram<Value>::AdjustAndAddValue(Value value) {
+ AddValue(value / kAdjust);
+}
+
template <class Value> inline Histogram<Value>::Histogram(const char* name)
: kAdjust(0),
kInitialBucketCount(0),
diff --git a/runtime/base/histogram.h b/runtime/base/histogram.h
index 1e12be8..78f6e1c 100644
--- a/runtime/base/histogram.h
+++ b/runtime/base/histogram.h
@@ -46,6 +46,7 @@
// This is the expected constructor when creating new Histograms.
Histogram(const char* name, Value initial_bucket_width, size_t max_buckets = 100);
void AddValue(Value);
+ void AdjustAndAddValue(Value); // Add a value after dividing it by kAdjust.
// Builds the cumulative distribution function from the frequency data.
// Accumulative summation of frequencies.
// cumulative_freq[i] = sum(frequency[j] : 0 < j < i )