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: 33 explicit TestReferenceMapVisitor(Thread* thread) REQUIRES_SHARED(Locks::mutator_lock_) 34 : CheckReferenceMapVisitor(thread) {} 35 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 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 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
