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9d7cd9b864
PR-URL: https://github.com/nodejs/node/pull/54077 Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Richard Lau <rlau@redhat.com> Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com> Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
126 lines
4.5 KiB
C++
126 lines
4.5 KiB
C++
// Copyright 2018 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 "src/common/globals.h"
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#include "src/heap/heap-inl.h"
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#include "src/heap/memory-chunk-metadata.h"
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#include "src/objects/cell.h"
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#include "src/objects/feedback-cell.h"
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#include "src/objects/script.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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#include "testing/gtest/include/gtest/gtest.h"
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namespace v8 {
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namespace internal {
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using RootsTest = TestWithIsolate;
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namespace {
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AllocationSpace GetSpaceFromObject(Tagged<Object> object) {
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DCHECK(IsHeapObject(object));
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MemoryChunk* chunk = MemoryChunk::FromHeapObject(Cast<HeapObject>(object));
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if (chunk->InReadOnlySpace()) return RO_SPACE;
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return chunk->Metadata()->owner()->identity();
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}
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} // namespace
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#define CHECK_IN_RO_SPACE(type, name, CamelName) \
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Tagged<HeapObject> name = roots.name(); \
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CHECK_EQ(RO_SPACE, GetSpaceFromObject(name));
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// The following tests check that all the roots accessible via ReadOnlyRoots are
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// in RO_SPACE.
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TEST_F(RootsTest, TestReadOnlyRoots) {
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ReadOnlyRoots roots(i_isolate());
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READ_ONLY_ROOT_LIST(CHECK_IN_RO_SPACE)
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}
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#undef CHECK_IN_RO_SPACE
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namespace {
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// Applies to objects in mutable root slots; specific slots may point into RO
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// space (e.g. because the slot value may change and only the initial value is
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// in RO space; or, because RO promotion dynamically decides whether to promote
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// the slot value to RO space).
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bool CanBeInReadOnlySpace(Factory* factory, Handle<Object> object) {
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// Entries in this list are in STRONG_MUTABLE_MOVABLE_ROOT_LIST, but may
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// initially point to objects that are in RO_SPACE.
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#define INITIALLY_READ_ONLY_ROOT_LIST(V) \
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V(api_private_symbol_table) \
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V(api_symbol_table) \
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V(basic_block_profiling_data) \
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V(builtins_constants_table) \
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V(current_microtask) \
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V(detached_contexts) \
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V(feedback_vectors_for_profiling_tools) \
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V(shared_wasm_memories) \
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V(materialized_objects) \
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V(public_symbol_table) \
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V(serialized_global_proxy_sizes) \
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V(serialized_objects) \
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IF_WASM(V, js_to_wasm_wrappers) \
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IF_WASM(V, wasm_canonical_rtts) \
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V(weak_refs_keep_during_job)
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#define TEST_CAN_BE_READ_ONLY(name) \
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if (factory->name().address() == object.address()) return true;
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INITIALLY_READ_ONLY_ROOT_LIST(TEST_CAN_BE_READ_ONLY)
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#undef TEST_CAN_BE_READ_ONLY
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#undef INITIALLY_READ_ONLY_ROOT_LIST
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// May be promoted to RO space, see read-only-promotion.h.
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if (IsAccessorInfo(*object)) return true;
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if (IsFunctionTemplateInfo(*object)) return true;
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if (IsFunctionTemplateRareData(*object)) return true;
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if (IsSharedFunctionInfo(*object)) return true;
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return false;
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}
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// Some mutable roots may initially point to undefined until they are properly
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// initialized.
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bool IsUninitialized(DirectHandle<Object> object) {
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return !IsTrustedObject(*object) && IsUndefined(*object);
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}
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} // namespace
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// The CHECK_EQ line is there just to ensure that the root is publicly
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// accessible from Heap, but ultimately the factory is used as it provides
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// handles that have the address in the root table.
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#define CHECK_NOT_IN_RO_SPACE(type, name, CamelName) \
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Handle<Object> name = factory->name(); \
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CHECK_EQ(*name, heap->name()); \
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if (IsHeapObject(*name) && !CanBeInReadOnlySpace(factory, name) && \
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!IsUninitialized(name)) { \
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CHECK_NE(RO_SPACE, GetSpaceFromObject(Cast<HeapObject>(*name))); \
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}
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// The following tests check that all the roots accessible via public Heap
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// accessors are not in RO_SPACE (with some exceptions, see
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// CanBeInReadOnlySpace).
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TEST_F(RootsTest, TestHeapRootsNotReadOnly) {
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Factory* factory = i_isolate()->factory();
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Heap* heap = i_isolate()->heap();
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MUTABLE_ROOT_LIST(CHECK_NOT_IN_RO_SPACE)
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}
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TEST_F(RootsTest, TestHeapNumberList) {
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ReadOnlyRoots roots(isolate());
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for (auto pos = RootIndex::kFirstReadOnlyRoot;
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pos <= RootIndex::kLastReadOnlyRoot; ++pos) {
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auto obj = roots.object_at(pos);
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bool in_nr_range = pos >= RootIndex::kFirstHeapNumberRoot &&
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pos <= RootIndex::kLastHeapNumberRoot;
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CHECK_EQ(IsHeapNumber(obj), in_nr_range);
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}
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}
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#undef CHECK_NOT_IN_RO_SPACE
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} // namespace internal
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} // namespace v8
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