// Copyright 2013 the V8 project authors. All rights reserved.
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// modification, are permitted provided that the following conditions are
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//
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#include "src/global-handles.h"
#include "test/cctest/cctest.h"
using namespace v8::internal;
using v8::UniqueId;
static List<Object*> skippable_objects;
static List<Object*> can_skip_called_objects;
static bool CanSkipCallback(Heap* heap, Object** pointer) {
can_skip_called_objects.Add(*pointer);
return skippable_objects.Contains(*pointer);
}
static void ResetCanSkipData() {
skippable_objects.Clear();
can_skip_called_objects.Clear();
}
class TestRetainedObjectInfo : public v8::RetainedObjectInfo {
public:
TestRetainedObjectInfo() : has_been_disposed_(false) {}
bool has_been_disposed() { return has_been_disposed_; }
virtual void Dispose() {
CHECK(!has_been_disposed_);
has_been_disposed_ = true;
}
virtual bool IsEquivalent(v8::RetainedObjectInfo* other) {
return other == this;
}
virtual intptr_t GetHash() { return 0; }
virtual const char* GetLabel() { return "whatever"; }
private:
bool has_been_disposed_;
};
class TestObjectVisitor : public ObjectVisitor {
public:
void VisitPointers(Object** start, Object** end) override {
for (Object** o = start; o != end; ++o)
visited.Add(*o);
}
List<Object*> visited;
};
TEST(IterateObjectGroupsOldApi) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
GlobalHandles* global_handles = isolate->global_handles();
v8::HandleScope handle_scope(CcTest::isolate());
Handle<Object> g1s1 =
global_handles->Create(*isolate->factory()->NewFixedArray(1));
Handle<Object> g1s2 =
global_handles->Create(*isolate->factory()->NewFixedArray(1));
Handle<Object> g2s1 =
global_handles->Create(*isolate->factory()->NewFixedArray(1));
Handle<Object> g2s2 =
global_handles->Create(*isolate->factory()->NewFixedArray(1));
TestRetainedObjectInfo info1;
TestRetainedObjectInfo info2;
{
Object** g1_objects[] = { g1s1.location(), g1s2.location() };
Object** g2_objects[] = { g2s1.location(), g2s2.location() };
global_handles->AddObjectGroup(g1_objects, 2, &info1);
global_handles->AddObjectGroup(g2_objects, 2, &info2);
}
// Iterate the object groups. First skip all.
{
ResetCanSkipData();
skippable_objects.Add(*g1s1.location());
skippable_objects.Add(*g1s2.location());
skippable_objects.Add(*g2s1.location());
skippable_objects.Add(*g2s2.location());
TestObjectVisitor visitor;
global_handles->IterateObjectGroups(&visitor, &CanSkipCallback);
// CanSkipCallback was called for all objects.
CHECK(can_skip_called_objects.length() == 4);
CHECK(can_skip_called_objects.Contains(*g1s1.location()));
CHECK(can_skip_called_objects.Contains(*g1s2.location()));
CHECK(can_skip_called_objects.Contains(*g2s1.location()));
CHECK(can_skip_called_objects.Contains(*g2s2.location()));
// Nothing was visited.
CHECK(visitor.visited.length() == 0);
CHECK(!info1.has_been_disposed());
CHECK(!info2.has_been_disposed());
}
// Iterate again, now only skip the second object group.
{
ResetCanSkipData();
// The first grough should still be visited, since only one object is
// skipped.
skippable_objects.Add(*g1s1.location());
skippable_objects.Add(*g2s1.location());
skippable_objects.Add(*g2s2.location());
TestObjectVisitor visitor;
global_handles->IterateObjectGroups(&visitor, &CanSkipCallback);
// CanSkipCallback was called for all objects.
CHECK(can_skip_called_objects.length() == 3 ||
can_skip_called_objects.length() == 4);
CHECK(can_skip_called_objects.Contains(*g1s2.location()));
CHECK(can_skip_called_objects.Contains(*g2s1.location()));
CHECK(can_skip_called_objects.Contains(*g2s2.location()));
// The first group was visited.
CHECK(visitor.visited.length() == 2);
CHECK(visitor.visited.Contains(*g1s1.location()));
CHECK(visitor.visited.Contains(*g1s2.location()));
CHECK(info1.has_been_disposed());
CHECK(!info2.has_been_disposed());
}
// Iterate again, don't skip anything.
{
ResetCanSkipData();
TestObjectVisitor visitor;
global_handles->IterateObjectGroups(&visitor, &CanSkipCallback);
// CanSkipCallback was called for all objects.
CHECK(can_skip_called_objects.length() == 1);
CHECK(can_skip_called_objects.Contains(*g2s1.location()) ||
can_skip_called_objects.Contains(*g2s2.location()));
// The second group was visited.
CHECK(visitor.visited.length() == 2);
CHECK(visitor.visited.Contains(*g2s1.location()));
CHECK(visitor.visited.Contains(*g2s2.location()));
CHECK(info2.has_been_disposed());
}
}
TEST(IterateObjectGroups) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
GlobalHandles* global_handles = isolate->global_handles();
v8::HandleScope handle_scope(CcTest::isolate());
Handle<Object> g1s1 =
global_handles->Create(*isolate->factory()->NewFixedArray(1));
Handle<Object> g1s2 =
global_handles->Create(*isolate->factory()->NewFixedArray(1));
Handle<Object> g2s1 =
global_handles->Create(*isolate->factory()->NewFixedArray(1));
Handle<Object> g2s2 =
global_handles->Create(*isolate->factory()->NewFixedArray(1));
TestRetainedObjectInfo info1;
TestRetainedObjectInfo info2;
global_handles->SetObjectGroupId(g2s1.location(), UniqueId(2));
global_handles->SetObjectGroupId(g2s2.location(), UniqueId(2));
global_handles->SetRetainedObjectInfo(UniqueId(2), &info2);
global_handles->SetObjectGroupId(g1s1.location(), UniqueId(1));
global_handles->SetObjectGroupId(g1s2.location(), UniqueId(1));
global_handles->SetRetainedObjectInfo(UniqueId(1), &info1);
// Iterate the object groups. First skip all.
{
ResetCanSkipData();
skippable_objects.Add(*g1s1.location());
skippable_objects.Add(*g1s2.location());
skippable_objects.Add(*g2s1.location());
skippable_objects.Add(*g2s2.location());
TestObjectVisitor visitor;
global_handles->IterateObjectGroups(&visitor, &CanSkipCallback);
// CanSkipCallback was called for all objects.
CHECK(can_skip_called_objects.length() == 4);
CHECK(can_skip_called_objects.Contains(*g1s1.location()));
CHECK(can_skip_called_objects.Contains(*g1s2.location()));
CHECK(can_skip_called_objects.Contains(*g2s1.location()));
CHECK(can_skip_called_objects.Contains(*g2s2.location()));
// Nothing was visited.
CHECK(visitor.visited.length() == 0);
CHECK(!info1.has_been_disposed());
CHECK(!info2.has_been_disposed());
}
// Iterate again, now only skip the second object group.
{
ResetCanSkipData();
// The first grough should still be visited, since only one object is
// skipped.
skippable_objects.Add(*g1s1.location());
skippable_objects.Add(*g2s1.location());
skippable_objects.Add(*g2s2.location());
TestObjectVisitor visitor;
global_handles->IterateObjectGroups(&visitor, &CanSkipCallback);
// CanSkipCallback was called for all objects.
CHECK(can_skip_called_objects.length() == 3 ||
can_skip_called_objects.length() == 4);
CHECK(can_skip_called_objects.Contains(*g1s2.location()));
CHECK(can_skip_called_objects.Contains(*g2s1.location()));
CHECK(can_skip_called_objects.Contains(*g2s2.location()));
// The first group was visited.
CHECK(visitor.visited.length() == 2);
CHECK(visitor.visited.Contains(*g1s1.location()));
CHECK(visitor.visited.Contains(*g1s2.location()));
CHECK(info1.has_been_disposed());
CHECK(!info2.has_been_disposed());
}
// Iterate again, don't skip anything.
{
ResetCanSkipData();
TestObjectVisitor visitor;
global_handles->IterateObjectGroups(&visitor, &CanSkipCallback);
// CanSkipCallback was called for all objects.
CHECK(can_skip_called_objects.length() == 1);
CHECK(can_skip_called_objects.Contains(*g2s1.location()) ||
can_skip_called_objects.Contains(*g2s2.location()));
// The second group was visited.
CHECK(visitor.visited.length() == 2);
CHECK(visitor.visited.Contains(*g2s1.location()));
CHECK(visitor.visited.Contains(*g2s2.location()));
CHECK(info2.has_been_disposed());
}
}
TEST(ImplicitReferences) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
GlobalHandles* global_handles = isolate->global_handles();
v8::HandleScope handle_scope(CcTest::isolate());
Handle<Object> g1s1 =
global_handles->Create(*isolate->factory()->NewFixedArray(1));
Handle<Object> g1c1 =
global_handles->Create(*isolate->factory()->NewFixedArray(1));
Handle<Object> g1c2 =
global_handles->Create(*isolate->factory()->NewFixedArray(1));
Handle<Object> g2s1 =
global_handles->Create(*isolate->factory()->NewFixedArray(1));
Handle<Object> g2s2 =
global_handles->Create(*isolate->factory()->NewFixedArray(1));
Handle<Object> g2c1 =
global_handles->Create(*isolate->factory()->NewFixedArray(1));
global_handles->SetObjectGroupId(g1s1.location(), UniqueId(1));
global_handles->SetObjectGroupId(g2s1.location(), UniqueId(2));
global_handles->SetObjectGroupId(g2s2.location(), UniqueId(2));
global_handles->SetReferenceFromGroup(UniqueId(1), g1c1.location());
global_handles->SetReferenceFromGroup(UniqueId(1), g1c2.location());
global_handles->SetReferenceFromGroup(UniqueId(2), g2c1.location());
List<ImplicitRefGroup*>* implicit_refs =
global_handles->implicit_ref_groups();
USE(implicit_refs);
CHECK(implicit_refs->length() == 2);
CHECK(implicit_refs->at(0)->parent ==
reinterpret_cast<HeapObject**>(g1s1.location()));
CHECK(implicit_refs->at(0)->length == 2);
CHECK(implicit_refs->at(0)->children[0] == g1c1.location());
CHECK(implicit_refs->at(0)->children[1] == g1c2.location());
CHECK(implicit_refs->at(1)->parent ==
reinterpret_cast<HeapObject**>(g2s1.location()));
CHECK(implicit_refs->at(1)->length == 1);
CHECK(implicit_refs->at(1)->children[0] == g2c1.location());
global_handles->RemoveObjectGroups();
global_handles->RemoveImplicitRefGroups();
}
TEST(EternalHandles) {
CcTest::InitializeVM();
Isolate* isolate = CcTest::i_isolate();
v8::Isolate* v8_isolate = reinterpret_cast<v8::Isolate*>(isolate);
EternalHandles* eternal_handles = isolate->eternal_handles();
// Create a number of handles that will not be on a block boundary
const int kArrayLength = 2048-1;
int indices[kArrayLength];
v8::Eternal<v8::Value> eternals[kArrayLength];
CHECK_EQ(0, eternal_handles->NumberOfHandles());
for (int i = 0; i < kArrayLength; i++) {
indices[i] = -1;
HandleScope scope(isolate);
v8::Local<v8::Object> object = v8::Object::New(v8_isolate);
object->Set(v8_isolate->GetCurrentContext(), i,
v8::Integer::New(v8_isolate, i))
.FromJust();
// Create with internal api
eternal_handles->Create(
isolate, *v8::Utils::OpenHandle(*object), &indices[i]);
// Create with external api
CHECK(eternals[i].IsEmpty());
eternals[i].Set(v8_isolate, object);
CHECK(!eternals[i].IsEmpty());
}
isolate->heap()->CollectAllAvailableGarbage();
for (int i = 0; i < kArrayLength; i++) {
for (int j = 0; j < 2; j++) {
HandleScope scope(isolate);
v8::Local<v8::Value> local;
if (j == 0) {
// Test internal api
local = v8::Utils::ToLocal(eternal_handles->Get(indices[i]));
} else {
// Test external api
local = eternals[i].Get(v8_isolate);
}
v8::Local<v8::Object> object = v8::Local<v8::Object>::Cast(local);
v8::Local<v8::Value> value =
object->Get(v8_isolate->GetCurrentContext(), i).ToLocalChecked();
CHECK(value->IsInt32());
CHECK_EQ(i,
value->Int32Value(v8_isolate->GetCurrentContext()).FromJust());
}
}
CHECK_EQ(2*kArrayLength, eternal_handles->NumberOfHandles());
// Create an eternal via the constructor
{
HandleScope scope(isolate);
v8::Local<v8::Object> object = v8::Object::New(v8_isolate);
v8::Eternal<v8::Object> eternal(v8_isolate, object);
CHECK(!eternal.IsEmpty());
CHECK(object == eternal.Get(v8_isolate));
}
CHECK_EQ(2*kArrayLength + 1, eternal_handles->NumberOfHandles());
}
TEST(PersistentBaseGetLocal) {
CcTest::InitializeVM();
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
v8::Local<v8::Object> o = v8::Object::New(isolate);
CHECK(!o.IsEmpty());
v8::Persistent<v8::Object> p(isolate, o);
CHECK(o == p.Get(isolate));
CHECK(v8::Local<v8::Object>::New(isolate, p) == p.Get(isolate));
v8::Global<v8::Object> g(isolate, o);
CHECK(o == g.Get(isolate));
CHECK(v8::Local<v8::Object>::New(isolate, g) == g.Get(isolate));
}
void WeakCallback(const v8::WeakCallbackInfo<void>& data) {}
TEST(WeakPersistentSmi) {
CcTest::InitializeVM();
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
v8::Local<v8::Number> n = v8::Number::New(isolate, 0);
v8::Global<v8::Number> g(isolate, n);
// Should not crash.
g.SetWeak<void>(nullptr, &WeakCallback, v8::WeakCallbackType::kParameter);
}