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1d29d81c69
PR-URL: https://github.com/nodejs/node/pull/52293 Reviewed-By: Moshe Atlow <moshe@atlow.co.il> Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com> Reviewed-By: Richard Lau <rlau@redhat.com>
118 lines
3.8 KiB
C++
118 lines
3.8 KiB
C++
// Copyright 2019 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "include/v8-object.h"
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#include "src/api/api-inl.h"
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#include "src/execution/isolate.h"
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#include "src/heap/combined-heap.h"
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#include "src/heap/heap.h"
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#include "src/heap/read-only-heap.h"
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#include "src/heap/read-only-spaces.h"
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#include "src/objects/heap-object.h"
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#include "src/objects/objects.h"
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#include "src/roots/roots-inl.h"
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#include "test/unittests/test-utils.h"
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namespace v8::internal::heap {
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using IteratorsTest = TestWithNativeContext;
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namespace {
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template <typename T>
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void TestIterator(T it) {
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while (!it.Next().is_null()) {
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}
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for (int i = 0; i < 20; i++) {
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CHECK(it.Next().is_null());
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}
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}
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} // namespace
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TEST_F(IteratorsTest, HeapObjectIteratorNullPastEnd) {
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TestIterator<HeapObjectIterator>(
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static_cast<v8::internal::HeapObjectIterator>(i_isolate()->heap()));
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}
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TEST_F(IteratorsTest, ReadOnlyHeapObjectIteratorNullPastEnd) {
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TestIterator<ReadOnlyHeapObjectIterator>(
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static_cast<v8::internal::ReadOnlyHeapObjectIterator>(
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i_isolate()->read_only_heap()));
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}
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TEST_F(IteratorsTest, CombinedHeapObjectIteratorNullPastEnd) {
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TestIterator<CombinedHeapObjectIterator>(i_isolate()->heap());
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}
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namespace {
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// An arbitrary object guaranteed to live on the non-read-only heap.
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Tagged<Object> CreateWritableObject(v8::Isolate* isolate) {
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return *v8::Utils::OpenDirectHandle(*v8::Object::New(isolate));
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}
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} // namespace
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TEST_F(IteratorsTest, ReadOnlyHeapObjectIterator) {
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HandleScope handle_scope(i_isolate());
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const Tagged<Object> sample_object = CreateWritableObject(v8_isolate());
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ReadOnlyHeapObjectIterator iterator(i_isolate()->read_only_heap());
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for (Tagged<HeapObject> obj = iterator.Next(); !obj.is_null();
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obj = iterator.Next()) {
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CHECK(ReadOnlyHeap::Contains(obj));
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CHECK(!i_isolate()->heap()->Contains(obj));
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CHECK_NE(sample_object, obj);
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}
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}
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TEST_F(IteratorsTest, HeapObjectIterator) {
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Heap* const heap = i_isolate()->heap();
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HandleScope handle_scope(i_isolate());
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const Tagged<Object> sample_object = CreateWritableObject(v8_isolate());
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bool seen_sample_object = false;
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HeapObjectIterator iterator(heap);
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for (Tagged<HeapObject> obj = iterator.Next(); !obj.is_null();
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obj = iterator.Next()) {
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CHECK_IMPLIES(!v8_flags.enable_third_party_heap,
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!ReadOnlyHeap::Contains(obj));
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CHECK(heap->Contains(obj));
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if (sample_object.SafeEquals(obj)) seen_sample_object = true;
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}
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CHECK(seen_sample_object);
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}
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TEST_F(IteratorsTest, CombinedHeapObjectIterator) {
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Heap* const heap = i_isolate()->heap();
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HandleScope handle_scope(i_isolate());
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const Tagged<Object> sample_object = CreateWritableObject(v8_isolate());
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bool seen_sample_object = false;
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CombinedHeapObjectIterator iterator(heap);
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for (Tagged<HeapObject> obj = iterator.Next(); !obj.is_null();
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obj = iterator.Next()) {
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CHECK(IsValidHeapObject(heap, obj));
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if (sample_object.SafeEquals(obj)) seen_sample_object = true;
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}
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CHECK(seen_sample_object);
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}
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TEST_F(IteratorsTest, PagedSpaceIterator) {
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Heap* const heap = i_isolate()->heap();
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PagedSpaceIterator iterator(heap);
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CHECK_EQ(heap->old_space(), iterator.Next());
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CHECK_EQ(heap->code_space(), iterator.Next());
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CHECK_EQ(heap->trusted_space(), iterator.Next());
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for (int i = 0; i < 20; i++) {
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CHECK_NULL(iterator.Next());
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}
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}
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TEST_F(IteratorsTest, SpaceIterator) {
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auto* const read_only_space =
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i_isolate()->read_only_heap()->read_only_space();
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for (SpaceIterator it(i_isolate()->heap()); it.HasNext();) {
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// ReadOnlySpace is not actually a Space but is instead a BaseSpace, but
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// ensure it's not been inserted incorrectly.
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CHECK_NE(it.Next(), reinterpret_cast<BaseSpace*>(read_only_space));
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}
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}
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} // namespace v8::internal::heap
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