Merge "tp: add mapping of I for task dead in task state struct"
diff --git a/protos/perfetto/metrics/android/java_heap_stats.proto b/protos/perfetto/metrics/android/java_heap_stats.proto
index edf8e53..3f269c0 100644
--- a/protos/perfetto/metrics/android/java_heap_stats.proto
+++ b/protos/perfetto/metrics/android/java_heap_stats.proto
@@ -20,6 +20,12 @@
 import "protos/perfetto/metrics/android/process_metadata.proto";
 
 message JavaHeapStats {
+  message HeapRoots {
+    optional string root_type = 1;
+    optional string type_name = 2;
+    optional int64 obj_count = 3;
+  }
+
   // Next id: 7
   message Sample {
     optional int64 ts = 1;
@@ -31,6 +37,9 @@
     optional int64 reachable_obj_count = 5;
     // Sum of anonymous RSS + swap pages in bytes.
     optional int64 anon_rss_and_swap_size = 6;
+
+    // ART root objects
+    repeated HeapRoots roots = 7;
   }
 
   // Heap stats per process. One sample per dump (can be > 1 if continuous
diff --git a/protos/perfetto/metrics/perfetto_merged_metrics.proto b/protos/perfetto/metrics/perfetto_merged_metrics.proto
index 9290ad5..34f3c28 100644
--- a/protos/perfetto/metrics/perfetto_merged_metrics.proto
+++ b/protos/perfetto/metrics/perfetto_merged_metrics.proto
@@ -343,6 +343,12 @@
 // Begin of protos/perfetto/metrics/android/java_heap_stats.proto
 
 message JavaHeapStats {
+  message HeapRoots {
+    optional string root_type = 1;
+    optional string type_name = 2;
+    optional int64 obj_count = 3;
+  }
+
   // Next id: 7
   message Sample {
     optional int64 ts = 1;
@@ -354,6 +360,9 @@
     optional int64 reachable_obj_count = 5;
     // Sum of anonymous RSS + swap pages in bytes.
     optional int64 anon_rss_and_swap_size = 6;
+
+    // ART root objects
+    repeated HeapRoots roots = 7;
   }
 
   // Heap stats per process. One sample per dump (can be > 1 if continuous
diff --git a/src/trace_processor/metrics/android/java_heap_stats.sql b/src/trace_processor/metrics/android/java_heap_stats.sql
index 1096e79..bb0b0b2 100644
--- a/src/trace_processor/metrics/android/java_heap_stats.sql
+++ b/src/trace_processor/metrics/android/java_heap_stats.sql
@@ -20,7 +20,7 @@
 CREATE VIEW java_heap_stats_output AS
 WITH
 -- Base view
-base_stats AS (
+base_stat_counts AS (
   SELECT
     upid,
     graph_sample_ts,
@@ -31,6 +31,36 @@
   FROM heap_graph_object
   GROUP BY 1, 2
 ),
+heap_roots AS (
+  SELECT
+    upid,
+    graph_sample_ts,
+    root_type,
+    IFNULL(t.deobfuscated_name, t.name) type_name,
+    COUNT(1) obj_count
+  FROM heap_graph_object o
+  JOIN heap_graph_class t ON o.type_id = t.id
+  -- Classes are going to be particularly spammy and uninteresting
+  -- from a memory analysis perspective (compared e.g. to local jni roots)
+  WHERE root_type IS NOT NULL AND root_type != 'ROOT_STICKY_CLASS'
+  GROUP BY 1, 2, 3, 4
+  ORDER BY obj_count DESC
+),
+heap_roots_proto AS (
+  SELECT
+    upid,
+    graph_sample_ts,
+    RepeatedField(JavaHeapStats_HeapRoots(
+      'root_type', root_type,
+      'type_name', type_name,
+      'obj_count', obj_count
+    )) roots
+  FROM heap_roots
+  GROUP BY 1, 2
+),
+base_stats AS (
+  SELECT * FROM base_stat_counts JOIN heap_roots_proto USING (upid, graph_sample_ts)
+),
 -- Find closest value
 closest_anon_swap AS (
   SELECT
@@ -64,6 +94,7 @@
       'obj_count', total_obj_count,
       'reachable_heap_size', reachable_size,
       'reachable_obj_count', reachable_obj_count,
+      'roots', roots,
       'anon_rss_and_swap_size', closest_anon_swap.val
     )) sample_protos
   FROM base_stats
diff --git a/src/trace_processor/metrics/metrics.descriptor.h b/src/trace_processor/metrics/metrics.descriptor.h
index 517c55d..960b618 100644
--- a/src/trace_processor/metrics/metrics.descriptor.h
+++ b/src/trace_processor/metrics/metrics.descriptor.h
@@ -34,7 +34,7 @@
 
 namespace perfetto {
 
-constexpr std::array<uint8_t, 18252> kMetricsDescriptor{
+constexpr std::array<uint8_t, 18416> kMetricsDescriptor{
     {0x0a, 0x9f, 0x05, 0x0a, 0x31, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x73, 0x2f,
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@@ -1119,7 +1119,7 @@
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-     0x52, 0x07, 0x73, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x73, 0x0a, 0xfa, 0x04,
+     0x52, 0x07, 0x73, 0x61, 0x6d, 0x70, 0x6c, 0x65, 0x73, 0x0a, 0x9e, 0x06,
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@@ -1130,7 +1130,7 @@
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+     0x74, 0x61, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x22, 0x9b, 0x05, 0x0a,
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+     0x10, 0x0e, 0x4a, 0x04, 0x08, 0x0e, 0x10, 0x0f}};
 
 }  // namespace perfetto
 
diff --git a/test/metrics/heap_stats_closest_proc.out b/test/metrics/heap_stats_closest_proc.out
index 1647505..ddcdc95 100644
--- a/test/metrics/heap_stats_closest_proc.out
+++ b/test/metrics/heap_stats_closest_proc.out
@@ -12,6 +12,11 @@
       obj_count: 1
       reachable_obj_count: 1
       anon_rss_and_swap_size: 2048
+      roots {
+        root_type: "ROOT_JAVA_FRAME"
+        type_name: "FactoryProducerDelegateImplActor"
+        obj_count: 1
+      }
     }
   }
 }
@@ -29,6 +34,11 @@
       obj_count: 1
       reachable_obj_count: 1
       anon_rss_and_swap_size: 3072
+      roots {
+        root_type: "ROOT_JAVA_FRAME"
+        type_name: "FactoryProducerDelegateImplActor"
+        obj_count: 1
+      }
     }
   }
 }
\ No newline at end of file
diff --git a/test/metrics/java_heap_stats.out b/test/metrics/java_heap_stats.out
index 48e2ed2..a4ff25c 100644
--- a/test/metrics/java_heap_stats.out
+++ b/test/metrics/java_heap_stats.out
@@ -12,6 +12,16 @@
       obj_count: 6
       reachable_obj_count: 3
       anon_rss_and_swap_size: 4096000
+      roots {
+        root_type: "ROOT_JAVA_FRAME"
+        type_name: "DeobfuscatedA[]"
+        obj_count: 1
+      }
+      roots {
+        root_type: "ROOT_JAVA_FRAME"
+        type_name: "FactoryProducerDelegateImplActor"
+        obj_count: 1
+      }
     }
   }
 }