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Add a test case for object grouping in a scavenger GC

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BUG=v8:2077
TEST=cctest/test-api/ApiObjectGroupsCycleForScavenger

Review URL: https://codereview.chromium.org/11312123
Patch from Kentaro Hara <haraken@chromium.org>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@12891 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
mstarzinger@chromium.org 2012-11-08 09:10:53 +00:00
parent 63ada1da1b
commit db73b0af16
1 changed files with 91 additions and 0 deletions
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91
test/cctest/test-api.cc
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@ -2543,6 +2543,97 @@ THREADED_TEST(ApiObjectGroupsCycle) {
}
THREADED_TEST(ApiObjectGroupsCycleForScavenger) {
HandleScope scope;
LocalContext env;
WeakCallCounter counter(1234);
Persistent<Object> g1s1;
Persistent<Object> g1s2;
Persistent<Object> g2s1;
Persistent<Object> g2s2;
Persistent<Object> g3s1;
Persistent<Object> g3s2;
{
HandleScope scope;
g1s1 = Persistent<Object>::New(Object::New());
g1s2 = Persistent<Object>::New(Object::New());
g1s1.MakeWeak(reinterpret_cast<void*>(&counter), &WeakPointerCallback);
g1s2.MakeWeak(reinterpret_cast<void*>(&counter), &WeakPointerCallback);
g2s1 = Persistent<Object>::New(Object::New());
g2s2 = Persistent<Object>::New(Object::New());
g2s1.MakeWeak(reinterpret_cast<void*>(&counter), &WeakPointerCallback);
g2s2.MakeWeak(reinterpret_cast<void*>(&counter), &WeakPointerCallback);
g3s1 = Persistent<Object>::New(Object::New());
g3s2 = Persistent<Object>::New(Object::New());
g3s1.MakeWeak(reinterpret_cast<void*>(&counter), &WeakPointerCallback);
g3s2.MakeWeak(reinterpret_cast<void*>(&counter), &WeakPointerCallback);
}
// Make a root.
Persistent<Object> root = Persistent<Object>::New(g1s1);
root.MarkPartiallyDependent();
// Connect groups. We're building the following cycle:
// G1: { g1s1, g2s1 }, g1s1 implicitly references g2s1, ditto for other
// groups.
{
g1s1.MarkPartiallyDependent();
g1s2.MarkPartiallyDependent();
g2s1.MarkPartiallyDependent();
g2s2.MarkPartiallyDependent();
g3s1.MarkPartiallyDependent();
g3s2.MarkPartiallyDependent();
Persistent<Value> g1_objects[] = { g1s1, g1s2 };
Persistent<Value> g2_objects[] = { g2s1, g2s2 };
Persistent<Value> g3_objects[] = { g3s1, g3s2 };
V8::AddObjectGroup(g1_objects, 2);
g1s1->Set(v8_str("x"), g2s1);
V8::AddObjectGroup(g2_objects, 2);
g2s1->Set(v8_str("x"), g3s1);
V8::AddObjectGroup(g3_objects, 2);
g3s1->Set(v8_str("x"), g1s1);
}
HEAP->CollectGarbage(i::NEW_SPACE);
// All objects should be alive.
CHECK_EQ(0, counter.NumberOfWeakCalls());
// Weaken the root.
root.MakeWeak(reinterpret_cast<void*>(&counter), &WeakPointerCallback);
root.MarkPartiallyDependent();
// Groups are deleted, rebuild groups.
{
g1s1.MarkPartiallyDependent();
g1s2.MarkPartiallyDependent();
g2s1.MarkPartiallyDependent();
g2s2.MarkPartiallyDependent();
g3s1.MarkPartiallyDependent();
g3s2.MarkPartiallyDependent();
Persistent<Value> g1_objects[] = { g1s1, g1s2 };
Persistent<Value> g2_objects[] = { g2s1, g2s2 };
Persistent<Value> g3_objects[] = { g3s1, g3s2 };
V8::AddObjectGroup(g1_objects, 2);
g1s1->Set(v8_str("x"), g2s1);
V8::AddObjectGroup(g2_objects, 2);
g2s1->Set(v8_str("x"), g3s1);
V8::AddObjectGroup(g3_objects, 2);
g3s1->Set(v8_str("x"), g1s1);
}
HEAP->CollectGarbage(i::NEW_SPACE);
// All objects should be gone. 7 global handles in total.
CHECK_EQ(7, counter.NumberOfWeakCalls());
}
THREADED_TEST(ScriptException) {
v8::HandleScope scope;
LocalContext env;