imtable_test.cc revision b486a98aadc95d80548953410cf23edba62259fa 
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-current-inl.h"
33
34namespace art {
35
36class ImTableTest : public CommonRuntimeTest {
37 public:
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
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
90TEST_F(ImTableTest, NewMethodBefore) {
91  ScopedObjectAccess soa(Thread::Current());
92
93  std::pair<ArtMethod*, ArtMethod*> methods = LoadMethods("LInterfaces$A;", "foo");
94  CHECK_EQ(ImTable::GetImtIndex(methods.first), ImTable::GetImtIndex(methods.second));
95}
96
97TEST_F(ImTableTest, NewClassBefore) {
98  ScopedObjectAccess soa(Thread::Current());
99
100  std::pair<ArtMethod*, ArtMethod*> methods = LoadMethods("LInterfaces$Z;", "foo");
101  CHECK_EQ(ImTable::GetImtIndex(methods.first), ImTable::GetImtIndex(methods.second));
102}
103
104}  // namespace art
105