1 /*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "imtable-inl.h"
18
19 #include <memory>
20 #include <string>
21
22 #include "jni.h"
23
24 #include "base/mutex.h"
25 #include "class_linker.h"
26 #include "common_runtime_test.h"
27 #include "mirror/accessible_object.h"
28 #include "mirror/class.h"
29 #include "mirror/class_loader.h"
30 #include "handle_scope-inl.h"
31 #include "scoped_thread_state_change-inl.h"
32 #include "thread-inl.h"
33
34 namespace art {
35
36 class ImTableTest : public CommonRuntimeTest {
37 public:
LoadClasses(const std::string & class_name)38 std::pair<mirror::Class*, mirror::Class*> LoadClasses(const std::string& class_name)
39 REQUIRES_SHARED(Locks::mutator_lock_) {
40 jobject jclass_loader_a = LoadDex("IMTA");
41 CHECK(jclass_loader_a != nullptr);
42 jobject jclass_loader_b = LoadDex("IMTB");
43 CHECK(jclass_loader_b != nullptr);
44
45 ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
46 Thread* self = Thread::Current();
47
48 StackHandleScope<3> hs(self);
49 MutableHandle<mirror::ClassLoader> h_class_loader = hs.NewHandle<mirror::ClassLoader>(nullptr);
50
51 // A.
52 h_class_loader.Assign(
53 ObjPtr<mirror::ClassLoader>::DownCast(self->DecodeJObject(jclass_loader_a)));
54 Handle<mirror::Class> h_class_a(
55 hs.NewHandle(class_linker->FindClass(self, class_name.c_str(), h_class_loader)));
56 if (h_class_a == nullptr) {
57 LOG(ERROR) << self->GetException()->Dump();
58 CHECK(false) << "h_class_a == nullptr";
59 }
60
61 // B.
62 h_class_loader.Assign(
63 ObjPtr<mirror::ClassLoader>::DownCast(self->DecodeJObject(jclass_loader_b)));
64 Handle<mirror::Class> h_class_b(
65 hs.NewHandle(class_linker->FindClass(self, class_name.c_str(), h_class_loader)));
66 if (h_class_b == nullptr) {
67 LOG(ERROR) << self->GetException()->Dump();
68 CHECK(false) << "h_class_b == nullptr";
69 }
70
71 return std::make_pair(h_class_a.Get(), h_class_b.Get());
72 }
73
LoadMethods(const std::string & class_name,const std::string & method_name)74 std::pair<ArtMethod*, ArtMethod*> LoadMethods(const std::string& class_name,
75 const std::string& method_name)
76 REQUIRES_SHARED(Locks::mutator_lock_) {
77 std::pair<mirror::Class*, mirror::Class*> classes = LoadClasses(class_name);
78
79 const PointerSize pointer_size = Runtime::Current()->GetClassLinker()->GetImagePointerSize();
80
81 ArtMethod* method_a =
82 classes.first->FindDeclaredVirtualMethodByName(method_name, pointer_size);
83 ArtMethod* method_b =
84 classes.second->FindDeclaredVirtualMethodByName(method_name, pointer_size);
85
86 return std::make_pair(method_a, method_b);
87 }
88 };
89
TEST_F(ImTableTest,NewMethodBefore)90 TEST_F(ImTableTest, NewMethodBefore) {
91 ScopedObjectAccess soa(Thread::Current());
92
93 std::pair<ArtMethod*, ArtMethod*> methods = LoadMethods("LInterfaces$A;", "foo");
94 CHECK_EQ(ImTable::GetImtIndex(methods.first), ImTable::GetImtIndex(methods.second));
95 }
96
TEST_F(ImTableTest,NewClassBefore)97 TEST_F(ImTableTest, NewClassBefore) {
98 ScopedObjectAccess soa(Thread::Current());
99
100 std::pair<ArtMethod*, ArtMethod*> methods = LoadMethods("LInterfaces$Z;", "foo");
101 CHECK_EQ(ImTable::GetImtIndex(methods.first), ImTable::GetImtIndex(methods.second));
102 }
103
104 } // namespace art
105