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// Copyright 2018 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 "src/common/globals.h"
#include "src/heap/basic-memory-chunk.h"
#include "src/heap/heap-inl.h"
#include "src/objects/cell.h"
#include "src/objects/feedback-cell.h"
#include "src/objects/script.h"
#include "src/roots/roots-inl.h"
#include "test/unittests/test-utils.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace v8 {
namespace internal {
using RootsTest = TestWithIsolate;
namespace {
AllocationSpace GetSpaceFromObject(Object object) {
DCHECK(object.IsHeapObject());
BasicMemoryChunk* chunk =
BasicMemoryChunk::FromHeapObject(HeapObject::cast(object));
if (chunk->InReadOnlySpace()) return RO_SPACE;
return chunk->owner()->identity();
}
} // namespace
#define CHECK_IN_RO_SPACE(type, name, CamelName) \
HeapObject name = roots.name(); \
CHECK_EQ(RO_SPACE, GetSpaceFromObject(name));
// The following tests check that all the roots accessible via ReadOnlyRoots are
// in RO_SPACE.
TEST_F(RootsTest, TestReadOnlyRoots) {
ReadOnlyRoots roots(i_isolate());
READ_ONLY_ROOT_LIST(CHECK_IN_RO_SPACE)
}
#undef CHECK_IN_RO_SPACE
namespace {
bool IsInitiallyMutable(Factory* factory, Address object_address) {
// Entries in this list are in STRONG_MUTABLE_MOVABLE_ROOT_LIST, but may
// initially point to objects that are in RO_SPACE.
#define INITIALLY_READ_ONLY_ROOT_LIST(V) \
V(api_private_symbol_table) \
V(api_symbol_table) \
V(basic_block_profiling_data) \
V(builtins_constants_table) \
V(current_microtask) \
V(detached_contexts) \
V(feedback_vectors_for_profiling_tools) \
V(shared_wasm_memories) \
V(materialized_objects) \
V(public_symbol_table) \
V(retaining_path_targets) \
V(serialized_global_proxy_sizes) \
V(serialized_objects) \
IF_WASM(V, wasm_canonical_rtts) \
V(weak_refs_keep_during_job)
#define TEST_CAN_BE_READ_ONLY(name) \
if (factory->name().address() == object_address) return false;
INITIALLY_READ_ONLY_ROOT_LIST(TEST_CAN_BE_READ_ONLY)
#undef TEST_CAN_BE_READ_ONLY
#undef INITIALLY_READ_ONLY_ROOT_LIST
return true;
}
} // namespace
// The CHECK_EQ line is there just to ensure that the root is publicly
// accessible from Heap, but ultimately the factory is used as it provides
// handles that have the address in the root table.
#define CHECK_NOT_IN_RO_SPACE(type, name, CamelName) \
Handle<Object> name = factory->name(); \
CHECK_EQ(*name, heap->name()); \
if (name->IsHeapObject() && IsInitiallyMutable(factory, name.address()) && \
!name->IsUndefined(i_isolate())) { \
CHECK_NE(RO_SPACE, GetSpaceFromObject(HeapObject::cast(*name))); \
}
// The following tests check that all the roots accessible via public Heap
// accessors are not in RO_SPACE with the exception of the objects listed in
// INITIALLY_READ_ONLY_ROOT_LIST.
TEST_F(RootsTest, TestHeapRootsNotReadOnly) {
Factory* factory = i_isolate()->factory();
Heap* heap = i_isolate()->heap();
MUTABLE_ROOT_LIST(CHECK_NOT_IN_RO_SPACE)
}
#undef CHECK_NOT_IN_RO_SPACE
} // namespace internal
} // namespace v8
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