Merge "Track the number of buckets dropped."
diff --git a/cmds/statsd/src/guardrail/StatsdStats.cpp b/cmds/statsd/src/guardrail/StatsdStats.cpp
index a5bd5c6..37d5ba0 100644
--- a/cmds/statsd/src/guardrail/StatsdStats.cpp
+++ b/cmds/statsd/src/guardrail/StatsdStats.cpp
@@ -443,6 +443,11 @@
     getAtomMetricStats(metricId).badValueType++;
 }
 
+void StatsdStats::noteBucketDropped(int metricId) {
+    lock_guard<std::mutex> lock(mLock);
+    getAtomMetricStats(metricId).bucketDropped++;
+}
+
 void StatsdStats::noteConditionChangeInNextBucket(int metricId) {
     lock_guard<std::mutex> lock(mLock);
     getAtomMetricStats(metricId).conditionChangeInNextBucket++;
diff --git a/cmds/statsd/src/guardrail/StatsdStats.h b/cmds/statsd/src/guardrail/StatsdStats.h
index cb17061..20ea7e5 100644
--- a/cmds/statsd/src/guardrail/StatsdStats.h
+++ b/cmds/statsd/src/guardrail/StatsdStats.h
@@ -360,6 +360,11 @@
     void noteBadValueType(int atomId);
 
     /**
+     * Buckets were dropped due to reclaim memory.
+     */
+    void noteBucketDropped(int metricId);
+
+    /**
      * A condition change was too late, arrived in the wrong bucket and was skipped
      */
     void noteConditionChangeInNextBucket(int atomId);
@@ -414,6 +419,7 @@
         long badValueType = 0;
         long conditionChangeInNextBucket = 0;
         long invalidatedBucket = 0;
+        long bucketDropped = 0;
     } AtomMetricStats;
 
 private:
diff --git a/cmds/statsd/src/metrics/CountMetricProducer.cpp b/cmds/statsd/src/metrics/CountMetricProducer.cpp
index 7cc57c1..350745b 100644
--- a/cmds/statsd/src/metrics/CountMetricProducer.cpp
+++ b/cmds/statsd/src/metrics/CountMetricProducer.cpp
@@ -243,6 +243,7 @@
 
 void CountMetricProducer::dropDataLocked(const int64_t dropTimeNs) {
     flushIfNeededLocked(dropTimeNs);
+    StatsdStats::getInstance().noteBucketDropped(mMetricId);
     mPastBuckets.clear();
 }
 
diff --git a/cmds/statsd/src/metrics/DurationMetricProducer.cpp b/cmds/statsd/src/metrics/DurationMetricProducer.cpp
index 69bafc3..6c1c47b 100644
--- a/cmds/statsd/src/metrics/DurationMetricProducer.cpp
+++ b/cmds/statsd/src/metrics/DurationMetricProducer.cpp
@@ -444,6 +444,7 @@
 
 void DurationMetricProducer::dropDataLocked(const int64_t dropTimeNs) {
     flushIfNeededLocked(dropTimeNs);
+    StatsdStats::getInstance().noteBucketDropped(mMetricId);
     mPastBuckets.clear();
 }
 
diff --git a/cmds/statsd/src/metrics/EventMetricProducer.cpp b/cmds/statsd/src/metrics/EventMetricProducer.cpp
index c53c4ce..7e695a6 100644
--- a/cmds/statsd/src/metrics/EventMetricProducer.cpp
+++ b/cmds/statsd/src/metrics/EventMetricProducer.cpp
@@ -77,6 +77,7 @@
 
 void EventMetricProducer::dropDataLocked(const int64_t dropTimeNs) {
     mProto->clear();
+    StatsdStats::getInstance().noteBucketDropped(mMetricId);
 }
 
 void EventMetricProducer::onSlicedConditionMayChangeLocked(bool overallCondition,
diff --git a/cmds/statsd/src/metrics/GaugeMetricProducer.cpp b/cmds/statsd/src/metrics/GaugeMetricProducer.cpp
index c9b7165..2609937 100644
--- a/cmds/statsd/src/metrics/GaugeMetricProducer.cpp
+++ b/cmds/statsd/src/metrics/GaugeMetricProducer.cpp
@@ -510,6 +510,7 @@
 
 void GaugeMetricProducer::dropDataLocked(const int64_t dropTimeNs) {
     flushIfNeededLocked(dropTimeNs);
+    StatsdStats::getInstance().noteBucketDropped(mMetricId);
     mPastBuckets.clear();
 }
 
diff --git a/cmds/statsd/src/metrics/ValueMetricProducer.cpp b/cmds/statsd/src/metrics/ValueMetricProducer.cpp
index 9fb78e7..d52c9ef 100644
--- a/cmds/statsd/src/metrics/ValueMetricProducer.cpp
+++ b/cmds/statsd/src/metrics/ValueMetricProducer.cpp
@@ -175,6 +175,7 @@
 
 void ValueMetricProducer::dropDataLocked(const int64_t dropTimeNs) {
     flushIfNeededLocked(dropTimeNs);
+    StatsdStats::getInstance().noteBucketDropped(mMetricId);
     mPastBuckets.clear();
 }
 
diff --git a/cmds/statsd/src/stats_log.proto b/cmds/statsd/src/stats_log.proto
index 5b91482..73aab48 100644
--- a/cmds/statsd/src/stats_log.proto
+++ b/cmds/statsd/src/stats_log.proto
@@ -418,6 +418,7 @@
       optional int64 bad_value_type = 5;
       optional int64 condition_change_in_next_bucket = 6;
       optional int64 invalidated_bucket = 7;
+      optional int64 bucket_dropped = 8;
     }
     repeated AtomMetricStats atom_metric_stats = 17;
 
diff --git a/cmds/statsd/src/stats_log_util.cpp b/cmds/statsd/src/stats_log_util.cpp
index 3cb7563..f76a9ad 100644
--- a/cmds/statsd/src/stats_log_util.cpp
+++ b/cmds/statsd/src/stats_log_util.cpp
@@ -79,6 +79,7 @@
 const int FIELD_ID_BAD_VALUE_TYPE = 5;
 const int FIELD_ID_CONDITION_CHANGE_IN_NEXT_BUCKET = 6;
 const int FIELD_ID_INVALIDATED_BUCKET = 7;
+const int FIELD_ID_BUCKET_DROPPED = 8;
 
 namespace {
 
@@ -497,6 +498,8 @@
                        (long long)pair.second.conditionChangeInNextBucket);
     protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_INVALIDATED_BUCKET,
                        (long long)pair.second.invalidatedBucket);
+    protoOutput->write(FIELD_TYPE_INT64 | FIELD_ID_BUCKET_DROPPED,
+                       (long long)pair.second.bucketDropped);
     protoOutput->end(token);
 }