1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
/*
* Copyright (C) 2016 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "class_table-inl.h"
#include "art_field-inl.h"
#include "art_method-inl.h"
#include "class_linker-inl.h"
#include "common_runtime_test.h"
#include "dex/dex_file.h"
#include "gc/accounting/card_table-inl.h"
#include "gc/heap.h"
#include "handle_scope-inl.h"
#include "mirror/class-alloc-inl.h"
#include "obj_ptr.h"
#include "scoped_thread_state_change-inl.h"
namespace art {
namespace mirror {
class CollectRootVisitor {
public:
CollectRootVisitor() {}
template <class MirrorType>
ALWAYS_INLINE void VisitRootIfNonNull(GcRoot<MirrorType>& root) const
REQUIRES_SHARED(Locks::mutator_lock_) {
if (!root.IsNull()) {
VisitRoot(root);
}
}
template <class MirrorType>
ALWAYS_INLINE void VisitRootIfNonNull(mirror::CompressedReference<MirrorType>* root) const
REQUIRES_SHARED(Locks::mutator_lock_) {
if (!root->IsNull()) {
VisitRoot(root);
}
}
template <class MirrorType>
void VisitRoot(GcRoot<MirrorType>& root) const REQUIRES_SHARED(Locks::mutator_lock_) {
VisitRoot(root.AddressWithoutBarrier());
}
template <class MirrorType>
void VisitRoot(mirror::CompressedReference<MirrorType>* root) const
REQUIRES_SHARED(Locks::mutator_lock_) {
roots_.insert(root->AsMirrorPtr());
}
mutable std::set<mirror::Object*> roots_;
};
class ClassTableTest : public CommonRuntimeTest {};
TEST_F(ClassTableTest, ClassTable) {
ScopedObjectAccess soa(Thread::Current());
jobject jclass_loader = LoadDex("XandY");
VariableSizedHandleScope hs(soa.Self());
Handle<ClassLoader> class_loader(hs.NewHandle(soa.Decode<ClassLoader>(jclass_loader)));
const char* descriptor_x = "LX;";
const char* descriptor_y = "LY;";
Handle<mirror::Class> h_X(
hs.NewHandle(class_linker_->FindClass(soa.Self(), descriptor_x, class_loader)));
Handle<mirror::Class> h_Y(
hs.NewHandle(class_linker_->FindClass(soa.Self(), descriptor_y, class_loader)));
Handle<mirror::Object> obj_X = hs.NewHandle(h_X->AllocObject(soa.Self()));
ASSERT_TRUE(obj_X != nullptr);
ClassTable table;
EXPECT_EQ(table.NumZygoteClasses(class_loader.Get()), 0u);
EXPECT_EQ(table.NumNonZygoteClasses(class_loader.Get()), 0u);
// Add h_X to the class table.
table.Insert(h_X.Get());
EXPECT_EQ(table.LookupByDescriptor(h_X.Get()), h_X.Get());
EXPECT_EQ(table.Lookup(descriptor_x, ComputeModifiedUtf8Hash(descriptor_x)), h_X.Get());
EXPECT_EQ(table.Lookup("NOT_THERE", ComputeModifiedUtf8Hash("NOT_THERE")), nullptr);
EXPECT_EQ(table.NumZygoteClasses(class_loader.Get()), 0u);
EXPECT_EQ(table.NumNonZygoteClasses(class_loader.Get()), 1u);
// Create the zygote snapshot and ensure the accounting is correct.
table.FreezeSnapshot();
EXPECT_EQ(table.NumZygoteClasses(class_loader.Get()), 1u);
EXPECT_EQ(table.NumNonZygoteClasses(class_loader.Get()), 0u);
// Test inserting and related lookup functions.
EXPECT_EQ(table.LookupByDescriptor(h_Y.Get()), nullptr);
EXPECT_FALSE(table.Contains(h_Y.Get()));
table.Insert(h_Y.Get());
EXPECT_EQ(table.LookupByDescriptor(h_X.Get()), h_X.Get());
EXPECT_EQ(table.LookupByDescriptor(h_Y.Get()), h_Y.Get());
EXPECT_TRUE(table.Contains(h_X.Get()));
EXPECT_TRUE(table.Contains(h_Y.Get()));
EXPECT_EQ(table.NumZygoteClasses(class_loader.Get()), 1u);
EXPECT_EQ(table.NumNonZygoteClasses(class_loader.Get()), 1u);
// Test adding / clearing strong roots.
EXPECT_TRUE(table.InsertStrongRoot(obj_X.Get()));
EXPECT_FALSE(table.InsertStrongRoot(obj_X.Get()));
table.ClearStrongRoots();
EXPECT_TRUE(table.InsertStrongRoot(obj_X.Get()));
// Collect all the roots and make sure there is nothing missing.
CollectRootVisitor roots;
table.VisitRoots(roots);
EXPECT_TRUE(roots.roots_.find(h_X.Get()) != roots.roots_.end());
EXPECT_TRUE(roots.roots_.find(h_Y.Get()) != roots.roots_.end());
EXPECT_TRUE(roots.roots_.find(obj_X.Get()) != roots.roots_.end());
// Checks that vising only classes works.
std::set<mirror::Class*> classes;
table.Visit([&classes](ObjPtr<mirror::Class> klass) REQUIRES_SHARED(Locks::mutator_lock_) {
classes.insert(klass.Ptr());
return true;
});
EXPECT_TRUE(classes.find(h_X.Get()) != classes.end());
EXPECT_TRUE(classes.find(h_Y.Get()) != classes.end());
EXPECT_EQ(classes.size(), 2u);
classes.clear();
table.Visit([&classes](ObjPtr<mirror::Class> klass) REQUIRES_SHARED(Locks::mutator_lock_) {
classes.insert(klass.Ptr());
// Return false to exit the Visit early.
return false;
});
EXPECT_EQ(classes.size(), 1u);
// Test remove.
table.Remove(descriptor_x);
EXPECT_FALSE(table.Contains(h_X.Get()));
// Test that WriteToMemory and ReadFromMemory work.
table.Insert(h_X.Get());
const size_t count = table.WriteToMemory(nullptr);
std::unique_ptr<uint8_t[]> buffer(new uint8_t[count]());
ASSERT_EQ(table.WriteToMemory(&buffer[0]), count);
ClassTable table2;
size_t count2 = table2.ReadFromMemory(&buffer[0]);
EXPECT_EQ(count, count2);
// Strong roots are not serialized, only classes.
EXPECT_TRUE(table2.Contains(h_X.Get()));
EXPECT_TRUE(table2.Contains(h_Y.Get()));
// TODO: Add tests for UpdateClass, InsertOatFile.
}
} // namespace mirror
} // namespace art
|
