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 "art_method-inl.h"
18 #include "check_reference_map_visitor.h"
19 #include "jni.h"
20
21 namespace art {
22
23 #define CHECK_REGS(...) do { \
24 int t[] = {__VA_ARGS__}; \
25 int t_size = sizeof(t) / sizeof(*t); \
26 CheckReferences(t, t_size, GetNativePcOffset()); \
27 } while (false);
28
29 static int gJava_StackWalk_refmap_calls = 0;
30
31 class TestReferenceMapVisitor : public CheckReferenceMapVisitor {
32 public:
REQUIRES_SHARED(Locks::mutator_lock_)33 explicit TestReferenceMapVisitor(Thread* thread) REQUIRES_SHARED(Locks::mutator_lock_)
34 : CheckReferenceMapVisitor(thread) {}
35
VisitFrame()36 bool VisitFrame() REQUIRES_SHARED(Locks::mutator_lock_) {
37 if (CheckReferenceMapVisitor::VisitFrame()) {
38 return true;
39 }
40 ArtMethod* m = GetMethod();
41 StringPiece m_name(m->GetName());
42
43 // Given the method name and the number of times the method has been called,
44 // we know the Dex registers with live reference values. Assert that what we
45 // find is what is expected.
46 if (m_name == "f") {
47 if (gJava_StackWalk_refmap_calls == 1) {
48 CHECK_EQ(1U, GetDexPc());
49 CHECK_REGS(4);
50 } else {
51 CHECK_EQ(gJava_StackWalk_refmap_calls, 2);
52 CHECK_EQ(5U, GetDexPc());
53 CHECK_REGS(4);
54 }
55 } else if (m_name == "g") {
56 if (gJava_StackWalk_refmap_calls == 1) {
57 CHECK_EQ(0xcU, GetDexPc());
58 CHECK_REGS(0, 2); // Note that v1 is not in the minimal root set
59 } else {
60 CHECK_EQ(gJava_StackWalk_refmap_calls, 2);
61 CHECK_EQ(0xcU, GetDexPc());
62 CHECK_REGS(0, 2);
63 }
64 } else if (m_name == "shlemiel") {
65 if (gJava_StackWalk_refmap_calls == 1) {
66 CHECK_EQ(0x380U, GetDexPc());
67 CHECK_REGS(2, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 21, 25);
68 } else {
69 CHECK_EQ(gJava_StackWalk_refmap_calls, 2);
70 CHECK_EQ(0x380U, GetDexPc());
71 CHECK_REGS(2, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 21, 25);
72 }
73 }
74
75 return true;
76 }
77 };
78
Java_Main_stackmap(JNIEnv *,jobject,jint count)79 extern "C" JNIEXPORT jint JNICALL Java_Main_stackmap(JNIEnv*, jobject, jint count) {
80 ScopedObjectAccess soa(Thread::Current());
81 CHECK_EQ(count, 0);
82 gJava_StackWalk_refmap_calls++;
83
84 // Visitor
85 TestReferenceMapVisitor mapper(soa.Self());
86 mapper.WalkStack();
87
88 return count + 1;
89 }
90
Java_Main_refmap2(JNIEnv *,jobject,jint count)91 extern "C" JNIEXPORT jint JNICALL Java_Main_refmap2(JNIEnv*, jobject, jint count) {
92 ScopedObjectAccess soa(Thread::Current());
93 gJava_StackWalk_refmap_calls++;
94
95 // Visitor
96 TestReferenceMapVisitor mapper(soa.Self());
97 mapper.WalkStack();
98
99 return count + 1;
100 }
101
102 } // namespace art
103