Line data Source code
1 : // Copyright 2018 the V8 project authors. All rights reserved.
2 : // Use of this source code is governed by a BSD-style license that can be
3 : // found in the LICENSE file.
4 :
5 : #include "src/heap/heap-inl.h"
6 : #include "src/objects/cell.h"
7 : #include "src/objects/feedback-cell.h"
8 : #include "src/objects/script.h"
9 : #include "src/roots-inl.h"
10 : #include "test/cctest/cctest.h"
11 :
12 : namespace v8 {
13 : namespace internal {
14 :
15 : namespace {
16 2845 : AllocationSpace GetSpaceFromObject(Object object) {
17 : DCHECK(object->IsHeapObject());
18 : return MemoryChunk::FromHeapObject(HeapObject::cast(object))
19 : ->owner()
20 2845 : ->identity();
21 : }
22 : } // namespace
23 :
24 : #define CHECK_IN_RO_SPACE(type, name, CamelName) \
25 : HeapObject name = roots.name(); \
26 : CHECK_EQ(RO_SPACE, GetSpaceFromObject(name));
27 :
28 : // The following tests check that all the roots accessible via ReadOnlyRoots are
29 : // in RO_SPACE.
30 25880 : TEST(TestReadOnlyRoots) {
31 : ReadOnlyRoots roots(CcTest::i_isolate());
32 :
33 2640 : READ_ONLY_ROOT_LIST(CHECK_IN_RO_SPACE)
34 5 : }
35 :
36 : #undef CHECK_IN_RO_SPACE
37 :
38 : namespace {
39 280 : bool IsInitiallyMutable(Factory* factory, Address object_address) {
40 : // Entries in this list are in STRONG_MUTABLE_MOVABLE_ROOT_LIST, but may
41 : // initially point to objects that are in RO_SPACE.
42 : #define INITIALLY_READ_ONLY_ROOT_LIST(V) \
43 : V(api_private_symbol_table) \
44 : V(api_symbol_table) \
45 : V(builtins_constants_table) \
46 : V(current_microtask) \
47 : V(detached_contexts) \
48 : V(dirty_js_finalization_groups) \
49 : V(feedback_vectors_for_profiling_tools) \
50 : V(materialized_objects) \
51 : V(noscript_shared_function_infos) \
52 : V(public_symbol_table) \
53 : V(retained_maps) \
54 : V(retaining_path_targets) \
55 : V(serialized_global_proxy_sizes) \
56 : V(serialized_objects) \
57 : V(weak_refs_keep_during_job)
58 :
59 : #define TEST_CAN_BE_READ_ONLY(name) \
60 : if (factory->name().address() == object_address) return false;
61 3675 : INITIALLY_READ_ONLY_ROOT_LIST(TEST_CAN_BE_READ_ONLY)
62 : #undef TEST_CAN_BE_READ_ONLY
63 : #undef INITIALLY_READ_ONLY_ROOT_LIST
64 205 : return true;
65 : }
66 : } // namespace
67 :
68 : // The CHECK_EQ line is there just to ensure that the root is publicly
69 : // accessible from Heap, but ultimately the factory is used as it provides
70 : // handles that have the address in the root table.
71 : #define CHECK_NOT_IN_RO_SPACE(type, name, CamelName) \
72 : Handle<Object> name = factory->name(); \
73 : CHECK_EQ(*name, heap->name()); \
74 : if (name->IsHeapObject() && IsInitiallyMutable(factory, name.address()) && \
75 : !name->IsUndefined(CcTest::i_isolate())) { \
76 : CHECK_NE(RO_SPACE, GetSpaceFromObject(HeapObject::cast(*name))); \
77 : }
78 :
79 : // The following tests check that all the roots accessible via public Heap
80 : // accessors are not in RO_SPACE with the exception of the objects listed in
81 : // INITIALLY_READ_ONLY_ROOT_LIST.
82 25880 : TEST(TestHeapRootsNotReadOnly) {
83 : Factory* factory = CcTest::i_isolate()->factory();
84 5 : Heap* heap = CcTest::i_isolate()->heap();
85 :
86 2240 : MUTABLE_ROOT_LIST(CHECK_NOT_IN_RO_SPACE)
87 5 : }
88 :
89 : #undef CHECK_NOT_IN_RO_SPACE
90 :
91 : } // namespace internal
92 77625 : } // namespace v8
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