Oilpan: insist on eager sweeping for some objects.

Source/platform/heap/HeapTest.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 1854 matching lines @@
     Heap::collectGarbage(ThreadState::NoHeapPointersOnStack, ThreadState::GCWithoutSweep, Heap::ForcedGC);
     EXPECT_EQ(10, LargeHeapObject::s_destructorCalls);
     Heap::collectGarbage(ThreadState::NoHeapPointersOnStack, ThreadState::GCWithSweep, Heap::ForcedGC);
     EXPECT_EQ(22, LargeHeapObject::s_destructorCalls);
 }
 
 class SimpleFinalizedEagerObjectBase : public GarbageCollectedFinalized<SimpleFinalizedEagerObjectBase> {
 public:
     virtual ~SimpleFinalizedEagerObjectBase() { }
     DEFINE_INLINE_TRACE() { }
+
+    EAGERLY_SWEEP();
 protected:
     SimpleFinalizedEagerObjectBase() { }
 };
 
 class SimpleFinalizedEagerObject : public SimpleFinalizedEagerObjectBase {
 public:
     static SimpleFinalizedEagerObject* create()
     {
         return new SimpleFinalizedEagerObject();
     }
 
     virtual ~SimpleFinalizedEagerObject()
     {
         ++s_destructorCalls;
     }
 
     static int s_destructorCalls;
 private:
     SimpleFinalizedEagerObject() { }
 };
 
+template<typename T>
+class ParameterizedButEmpty {
+public:
+    EAGERLY_SWEEP();
+};
+
+class SimpleFinalizedObjectInstanceOfTemplate final : public GarbageCollectedFinalized<SimpleFinalizedObjectInstanceOfTemplate>, public ParameterizedButEmpty<SimpleFinalizedObjectInstanceOfTemplate> {
+public:
+    static SimpleFinalizedObjectInstanceOfTemplate* create()
+    {
+        return new SimpleFinalizedObjectInstanceOfTemplate();
+    }
+    ~SimpleFinalizedObjectInstanceOfTemplate()
+    {
+        ++s_destructorCalls;
+    }
+
+    DEFINE_INLINE_TRACE() { }
+
+    static int s_destructorCalls;
+private:
+    SimpleFinalizedObjectInstanceOfTemplate() { }
+};
+
 int SimpleFinalizedEagerObject::s_destructorCalls = 0;
-
-EAGERLY_SWEEP(SimpleFinalizedEagerObjectBase);
+int SimpleFinalizedObjectInstanceOfTemplate::s_destructorCalls = 0;
 
 TEST(HeapTest, EagerlySweepingPages)
 {
     clearOutOldGarbage();
 
     SimpleFinalizedObject::s_destructorCalls = 0;
     SimpleFinalizedEagerObject::s_destructorCalls = 0;
+    SimpleFinalizedObjectInstanceOfTemplate::s_destructorCalls = 0;
     EXPECT_EQ(0, SimpleFinalizedObject::s_destructorCalls);
     EXPECT_EQ(0, SimpleFinalizedEagerObject::s_destructorCalls);
     for (int i = 0; i < 1000; i++)
         SimpleFinalizedObject::create();
     for (int i = 0; i < 100; i++)
         SimpleFinalizedEagerObject::create();
+    for (int i = 0; i < 100; i++)
+        SimpleFinalizedObjectInstanceOfTemplate::create();
     Heap::collectGarbage(ThreadState::NoHeapPointersOnStack, ThreadState::GCWithoutSweep, Heap::ForcedGC);
     EXPECT_EQ(0, SimpleFinalizedObject::s_destructorCalls);
     EXPECT_EQ(100, SimpleFinalizedEagerObject::s_destructorCalls);
+    EXPECT_EQ(100, SimpleFinalizedObjectInstanceOfTemplate::s_destructorCalls);
 }
 #endif
 
 TEST(HeapTest, Finalization)
 {
     {
         HeapTestSubClass* t1 = HeapTestSubClass::create();
         HeapTestSubClass* t2 = HeapTestSubClass::create();
         HeapTestSuperClass* t3 = HeapTestSuperClass::create();
         // FIXME(oilpan): Ignore unused variables.
@@ skipping 4157 matching lines @@
 {
     Persistent<ClassWithMember> object = ClassWithMember::create();
     EXPECT_EQ(0, object->traceCount());
     TestMixinAllocatingObject* mixin = TestMixinAllocatingObject::create(object.get());
     EXPECT_TRUE(mixin);
     EXPECT_GT(object->traceCount(), 0);
     EXPECT_GT(mixin->traceCount(), 0);
 }
 
 } // namespace blink