Revision: 5567
Author: [email protected]
Date: Thu Sep 30 05:24:56 2010
Log: Fix HeapSnapshotsDiff test and a bug introduced during snapshot size optimization.

The bug wasn't revealed because the test was disabled.

BUG=848
TEST=HeapSnapshotsDiff,HeapSnapshotRootPreservedAfterSorting

Review URL: http://codereview.chromium.org/3572003
http://code.google.com/p/v8/source/detail?r=5567

Modified:
 /branches/bleeding_edge/src/profile-generator.cc
 /branches/bleeding_edge/src/profile-generator.h
 /branches/bleeding_edge/test/cctest/cctest.status
 /branches/bleeding_edge/test/cctest/test-heap-profiler.cc

=======================================
--- /branches/bleeding_edge/src/profile-generator.cc Fri Sep 24 04:45:12 2010 +++ /branches/bleeding_edge/src/profile-generator.cc Thu Sep 30 05:24:56 2010
@@ -952,8 +952,8 @@


 void HeapEntry::Print(int max_depth, int indent) {
-  OS::Print("%6d %6d %6d [%ld] ",
-            self_size(), ReachableSize(), RetainedSize(), id_);
+  OS::Print("%6d %6d %6d [%llu, %d] ",
+            self_size(), ReachableSize(), RetainedSize(), id_, painted_);
   if (type() != kString) {
     OS::Print("%s %.40s\n", TypeAsString(), name_);
   } else {
@@ -1237,7 +1237,7 @@
       type_(type),
       title_(title),
       uid_(uid),
-      root_entry_index_(-1),
+      root_entry_(NULL),
       raw_entries_(NULL),
       entries_sorted_(false) {
   STATIC_ASSERT(
@@ -1276,11 +1276,11 @@
                                   int children_count,
                                   int retainers_count) {
   if (object == kInternalRootObject) {
-    ASSERT(root_entry_index_ == -1);
-    root_entry_index_ = entries_.length();
+    ASSERT(root_entry_ == NULL);
     ASSERT(retainers_count == 0);
-    return AddEntry(
+    root_entry_ = AddEntry(
         HeapEntry::kInternal, "", 0, 0, children_count, retainers_count);
+    return root_entry_;
   } else if (object->IsJSFunction()) {
     JSFunction* func = JSFunction::cast(object);
     SharedFunctionInfo* shared = func->shared();
=======================================
--- /branches/bleeding_edge/src/profile-generator.h     Fri Sep 24 04:45:12 2010
+++ /branches/bleeding_edge/src/profile-generator.h     Thu Sep 30 05:24:56 2010
@@ -662,7 +662,7 @@
   Type type() { return type_; }
   const char* title() { return title_; }
   unsigned uid() { return uid_; }
-  HeapEntry* root() { return entries_[root_entry_index_]; }
+  HeapEntry* root() { return root_entry_; }

   void AllocateEntries(
       int entries_count, int children_count, int retainers_count);
@@ -704,7 +704,7 @@
   Type type_;
   const char* title_;
   unsigned uid_;
-  int root_entry_index_;
+  HeapEntry* root_entry_;
   char* raw_entries_;
   List<HeapEntry*> entries_;
   bool entries_sorted_;
=======================================
--- /branches/bleeding_edge/test/cctest/cctest.status Fri Aug 27 00:08:03 2010 +++ /branches/bleeding_edge/test/cctest/cctest.status Thu Sep 30 05:24:56 2010
@@ -35,11 +35,6 @@
 # BUG(382): Weird test. Can't guarantee that it never times out.
 test-api/ApplyInterruption: PASS || TIMEOUT

-# Bug (484): This test which we thought was originally corrected in r5236
-# is reappering. Disabled until bug in test is fixed. This only fails
-# when snapshot is on, so I am marking it PASS || FAIL
-test-heap-profiler/HeapSnapshotsDiff: PASS || FAIL
-
 # These tests always fail.  They are here to test test.py.  If
 # they don't fail then test.py has failed.
 test-serialize/TestThatAlwaysFails: FAIL
=======================================
--- /branches/bleeding_edge/test/cctest/test-heap-profiler.cc Tue Sep 14 08:11:24 2010 +++ /branches/bleeding_edge/test/cctest/test-heap-profiler.cc Thu Sep 30 05:24:56 2010
@@ -787,6 +787,7 @@
   CompileAndRunScript(
       "function A() {}\n"
       "function B(x) { this.x = x; }\n"
+      "function A2(a) { for (var i = 0; i < a; ++i) this[i] = i; }\n"
       "var a = new A();\n"
       "var b = new B(a);");
   const v8::HeapSnapshot* snapshot1 =
@@ -795,7 +796,7 @@
   CompileAndRunScript(
       "delete a;\n"
       "b.x = null;\n"
-      "var a = new A();\n"
+      "var a = new A2(20);\n"
       "var b2 = new B(a);");
   const v8::HeapSnapshot* snapshot2 =
       v8::HeapProfiler::TakeSnapshot(v8::String::New("s2"));
@@ -811,7 +812,7 @@
     const v8::HeapGraphNode* node = prop->GetToNode();
     if (node->GetType() == v8::HeapGraphNode::kObject) {
       v8::String::AsciiValue node_name(node->GetName());
-      if (strcmp(*node_name, "A") == 0) {
+      if (strcmp(*node_name, "A2") == 0) {
         CHECK(IsNodeRetainedAs(node, v8::HeapGraphEdge::kProperty, "a"));
         CHECK(!found_A);
         found_A = true;
@@ -847,6 +848,19 @@
   CHECK_NE_UINT64_T(0, s1_A_id);
   CHECK(s1_A_id != s2_A_id);
 }
+
+
+TEST(HeapSnapshotRootPreservedAfterSorting) {
+  v8::HandleScope scope;
+  LocalContext env;
+  const v8::HeapSnapshot* snapshot =
+      v8::HeapProfiler::TakeSnapshot(v8::String::New("s"));
+  const v8::HeapGraphNode* root1 = snapshot->GetRoot();
+  const_cast<i::HeapSnapshot*>(reinterpret_cast<const i::HeapSnapshot*>(
+      snapshot))->GetSortedEntriesList();
+  const v8::HeapGraphNode* root2 = snapshot->GetRoot();
+  CHECK_EQ(root1, root2);
+}


 namespace v8 {

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