1 /*
2 * Copyright (C) 2015 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 "arch/context.h"
18 #include "art_method-inl.h"
19 #include "jni.h"
20 #include "scoped_thread_state_change-inl.h"
21 #include "stack.h"
22 #include "thread.h"
23
24 namespace art {
25
26 namespace {
27
28 class TestVisitor : public StackVisitor {
29 public:
TestVisitor(Thread * thread,Context * context,mirror::Object * this_value)30 TestVisitor(Thread* thread, Context* context, mirror::Object* this_value)
31 REQUIRES_SHARED(Locks::mutator_lock_)
32 : StackVisitor(thread, context, StackVisitor::StackWalkKind::kIncludeInlinedFrames),
33 this_value_(this_value),
34 found_method_index_(0) {}
35
VisitFrame()36 bool VisitFrame() REQUIRES_SHARED(Locks::mutator_lock_) {
37 ArtMethod* m = GetMethod();
38 std::string m_name(m->GetName());
39
40 if (m_name.compare("testThisWithInstanceCall") == 0) {
41 found_method_index_ = 1;
42 uint32_t value = 0;
43 CHECK(GetVReg(m, 1, kReferenceVReg, &value));
44 CHECK_EQ(reinterpret_cast<mirror::Object*>(value), this_value_);
45 CHECK_EQ(GetThisObject(), this_value_);
46 } else if (m_name.compare("testThisWithStaticCall") == 0) {
47 found_method_index_ = 2;
48 uint32_t value = 0;
49 CHECK(GetVReg(m, 1, kReferenceVReg, &value));
50 } else if (m_name.compare("testParameter") == 0) {
51 found_method_index_ = 3;
52 uint32_t value = 0;
53 CHECK(GetVReg(m, 1, kReferenceVReg, &value));
54 } else if (m_name.compare("testObjectInScope") == 0) {
55 found_method_index_ = 4;
56 uint32_t value = 0;
57 CHECK(GetVReg(m, 0, kReferenceVReg, &value));
58 }
59
60 return true;
61 }
62
63 mirror::Object* this_value_;
64
65 // Value returned to Java to ensure the methods testSimpleVReg and testPairVReg
66 // have been found and tested.
67 jint found_method_index_;
68 };
69
Java_Main_doNativeCallRef(JNIEnv *,jobject value)70 extern "C" JNIEXPORT jint JNICALL Java_Main_doNativeCallRef(JNIEnv*, jobject value) {
71 ScopedObjectAccess soa(Thread::Current());
72 std::unique_ptr<Context> context(Context::Create());
73 TestVisitor visitor(soa.Self(), context.get(), soa.Decode<mirror::Object>(value).Ptr());
74 visitor.WalkStack();
75 return visitor.found_method_index_;
76 }
77
Java_Main_doStaticNativeCallRef(JNIEnv *,jclass)78 extern "C" JNIEXPORT jint JNICALL Java_Main_doStaticNativeCallRef(JNIEnv*, jclass) {
79 ScopedObjectAccess soa(Thread::Current());
80 std::unique_ptr<Context> context(Context::Create());
81 TestVisitor visitor(soa.Self(), context.get(), nullptr);
82 visitor.WalkStack();
83 return visitor.found_method_index_;
84 }
85
86 } // namespace
87
88 } // namespace art
89