commit 1af86f17dc9a47faf1c6cd7ccd23d248fdc615ab
author Richard Uhler <ruhler@google.com> Thu Oct 29 14:55:00 2015 -0700
committer Richard Uhler <ruhler@google.com> Tue Nov 03 11:11:57 2015 -0800
tree 22796622e72c8381bbb26d15c3f7dd35584dbdb2
parent 530dcc8b74a0f4e5f54e2b2c326580d58594a2f7

ahat: limit default number of results shown.

Previously, ahat had performance issues rendering large pages. This
change causes ahat to limit the number results shown in large pages by
default, requiring the user to explicitly request more information if
they care about it.

Bug: 25114227
Change-Id: Ief67396be254be4c84e6971f5b903a701206e17b

tools/ahat/src/OverviewHandler.java

diff --git a/tools/ahat/src/OverviewHandler.java b/tools/ahat/src/OverviewHandler.java
index f49c009..e86679f 100644
--- a/tools/ahat/src/OverviewHandler.java
+++ b/tools/ahat/src/OverviewHandler.java
@@ -22,11 +22,15 @@
 import java.util.Collections;
 import java.util.List;
 
-class OverviewHandler extends AhatHandler {
+class OverviewHandler implements AhatHandler {
+
+  private static final String OVERVIEW_ID = "overview";
+
+  private AhatSnapshot mSnapshot;
   private File mHprof;
 
   public OverviewHandler(AhatSnapshot snapshot, File hprof) {
-    super(snapshot);
+    mSnapshot = snapshot;
     mHprof = hprof;
   }
 
@@ -43,7 +47,7 @@
     doc.end();
 
     doc.section("Heap Sizes");
-    printHeapSizes(doc);
+    printHeapSizes(doc, query);
 
     DocString menu = new DocString();
     menu.appendLink(DocString.uri("roots"), DocString.text("Roots"));
@@ -54,7 +58,7 @@
     doc.big(menu);
   }
 
-  private void printHeapSizes(Doc doc) {
+  private void printHeapSizes(Doc doc, Query query) {
     List<Object> dummy = Collections.singletonList(null);
 
     HeapTable.TableConfig<Object> table = new HeapTable.TableConfig<Object>() {
@@ -70,7 +74,7 @@
         return Collections.emptyList();
       }
     };
-    HeapTable.render(doc, table, mSnapshot, dummy);
+    HeapTable.render(doc, query, OVERVIEW_ID, table, mSnapshot, dummy);
   }
 }