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// Copyright 2019 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "include/v8.h"
#include "src/api/api-inl.h"
#include "src/execution/isolate.h"
#include "src/heap/combined-heap.h"
#include "src/heap/heap.h"
#include "src/heap/read-only-heap.h"
#include "src/objects/heap-object.h"
#include "src/objects/objects.h"
#include "src/roots/roots-inl.h"
#include "test/cctest/cctest.h"
namespace v8 {
namespace internal {
namespace heap {
TEST(HeapObjectIteratorNullPastEnd) {
HeapObjectIterator iterator(CcTest::heap());
while (!iterator.Next().is_null()) {
}
for (int i = 0; i < 20; i++) {
CHECK(iterator.Next().is_null());
}
}
TEST(ReadOnlyHeapObjectIteratorNullPastEnd) {
ReadOnlyHeapObjectIterator iterator(CcTest::read_only_heap());
while (!iterator.Next().is_null()) {
}
for (int i = 0; i < 20; i++) {
CHECK(iterator.Next().is_null());
}
}
TEST(CombinedHeapObjectIteratorNullPastEnd) {
CombinedHeapObjectIterator iterator(CcTest::heap());
while (!iterator.Next().is_null()) {
}
for (int i = 0; i < 20; i++) {
CHECK(iterator.Next().is_null());
}
}
namespace {
// An arbitrary object guaranteed to live on the non-read-only heap.
Object CreateWritableObject() {
return *v8::Utils::OpenHandle(*v8::Object::New(CcTest::isolate()));
}
} // namespace
TEST(ReadOnlyHeapObjectIterator) {
CcTest::InitializeVM();
HandleScope handle_scope(CcTest::i_isolate());
const Object sample_object = CreateWritableObject();
ReadOnlyHeapObjectIterator iterator(CcTest::read_only_heap());
for (HeapObject obj = iterator.Next(); !obj.is_null();
obj = iterator.Next()) {
CHECK(ReadOnlyHeap::Contains(obj));
CHECK(!CcTest::heap()->Contains(obj));
CHECK_NE(sample_object, obj);
}
}
TEST(HeapObjectIterator) {
CcTest::InitializeVM();
HandleScope handle_scope(CcTest::i_isolate());
const Object sample_object = CreateWritableObject();
HeapObjectIterator iterator(CcTest::heap());
bool seen_sample_object = false;
for (HeapObject obj = iterator.Next(); !obj.is_null();
obj = iterator.Next()) {
CHECK(!ReadOnlyHeap::Contains(obj));
CHECK(CcTest::heap()->Contains(obj));
if (sample_object == obj) seen_sample_object = true;
}
CHECK(seen_sample_object);
}
TEST(CombinedHeapObjectIterator) {
CcTest::InitializeVM();
HandleScope handle_scope(CcTest::i_isolate());
const Object sample_object = CreateWritableObject();
CombinedHeapObjectIterator iterator(CcTest::heap());
bool seen_sample_object = false;
for (HeapObject obj = iterator.Next(); !obj.is_null();
obj = iterator.Next()) {
CHECK(IsValidHeapObject(CcTest::heap(), obj));
if (sample_object == obj) seen_sample_object = true;
}
CHECK(seen_sample_object);
}
TEST(PagedSpaceIterator) {
Heap* const heap = CcTest::heap();
PagedSpaceIterator iterator(heap);
CHECK_EQ(iterator.Next(), reinterpret_cast<PagedSpace*>(heap->old_space()));
CHECK_EQ(iterator.Next(), reinterpret_cast<PagedSpace*>(heap->code_space()));
CHECK_EQ(iterator.Next(), reinterpret_cast<PagedSpace*>(heap->map_space()));
for (int i = 0; i < 20; i++) {
CHECK_NULL(iterator.Next());
}
}
TEST(SpaceIterator) {
auto* const read_only_space = CcTest::read_only_heap()->read_only_space();
for (SpaceIterator it(CcTest::heap()); it.HasNext();) {
CHECK_NE(it.Next(), reinterpret_cast<Space*>(read_only_space));
}
}
} // namespace heap
} // namespace internal
} // namespace v8
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