| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <stdio.h> |
| #include <memory> |
| |
| #include "class_linker.h" |
| #include "gc_map.h" |
| #include "mirror/art_method-inl.h" |
| #include "mirror/class-inl.h" |
| #include "mirror/object_array-inl.h" |
| #include "mirror/object-inl.h" |
| #include "jni.h" |
| #include "scoped_thread_state_change.h" |
| |
| namespace art { |
| |
| #define REG(reg_bitmap, reg) \ |
| (((reg) < m->GetCodeItem()->registers_size_) && \ |
| ((*((reg_bitmap) + (reg)/8) >> ((reg) % 8) ) & 0x01)) |
| |
| #define CHECK_REGS(...) if (!IsShadowFrame()) { \ |
| int t[] = {__VA_ARGS__}; \ |
| int t_size = sizeof(t) / sizeof(*t); \ |
| for (int i = 0; i < t_size; ++i) \ |
| CHECK(REG(reg_bitmap, t[i])) << "Error: Reg " << i << " is not in RegisterMap"; \ |
| } |
| |
| static int gJava_StackWalk_refmap_calls = 0; |
| |
| struct TestReferenceMapVisitor : public StackVisitor { |
| explicit TestReferenceMapVisitor(Thread* thread) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
| : StackVisitor(thread, NULL) { |
| } |
| |
| bool VisitFrame() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| mirror::ArtMethod* m = GetMethod(); |
| CHECK(m != NULL); |
| LOG(INFO) << "At " << PrettyMethod(m, false); |
| |
| if (m->IsCalleeSaveMethod() || m->IsNative()) { |
| LOG(WARNING) << "no PC for " << PrettyMethod(m); |
| CHECK_EQ(GetDexPc(), DexFile::kDexNoIndex); |
| return true; |
| } |
| const uint8_t* reg_bitmap = NULL; |
| if (!IsShadowFrame()) { |
| NativePcOffsetToReferenceMap map(m->GetNativeGcMap()); |
| reg_bitmap = map.FindBitMap(GetNativePcOffset()); |
| } |
| StringPiece m_name(m->GetName()); |
| |
| // Given the method name and the number of times the method has been called, |
| // we know the Dex registers with live reference values. Assert that what we |
| // find is what is expected. |
| if (m_name == "f") { |
| if (gJava_StackWalk_refmap_calls == 1) { |
| CHECK_EQ(1U, GetDexPc()); |
| CHECK_REGS(1); |
| } else { |
| CHECK_EQ(gJava_StackWalk_refmap_calls, 2); |
| CHECK_EQ(5U, GetDexPc()); |
| CHECK_REGS(1); |
| } |
| } else if (m_name == "g") { |
| if (gJava_StackWalk_refmap_calls == 1) { |
| CHECK_EQ(0xcU, GetDexPc()); |
| CHECK_REGS(0, 2); // Note that v1 is not in the minimal root set |
| } else { |
| CHECK_EQ(gJava_StackWalk_refmap_calls, 2); |
| CHECK_EQ(0xcU, GetDexPc()); |
| CHECK_REGS(0, 2); |
| } |
| } else if (m_name == "shlemiel") { |
| if (gJava_StackWalk_refmap_calls == 1) { |
| CHECK_EQ(0x380U, GetDexPc()); |
| CHECK_REGS(2, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 21, 25); |
| } else { |
| CHECK_EQ(gJava_StackWalk_refmap_calls, 2); |
| CHECK_EQ(0x380U, GetDexPc()); |
| CHECK_REGS(2, 4, 5, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18, 19, 21, 25); |
| } |
| } |
| |
| return true; |
| } |
| }; |
| |
| extern "C" JNIEXPORT jint JNICALL Java_Main_stackmap(JNIEnv*, jobject, jint count) { |
| ScopedObjectAccess soa(Thread::Current()); |
| CHECK_EQ(count, 0); |
| gJava_StackWalk_refmap_calls++; |
| |
| // Visitor |
| TestReferenceMapVisitor mapper(soa.Self()); |
| mapper.WalkStack(); |
| |
| return count + 1; |
| } |
| |
| extern "C" JNIEXPORT jint JNICALL Java_Main_refmap2(JNIEnv*, jobject, jint count) { |
| ScopedObjectAccess soa(Thread::Current()); |
| gJava_StackWalk_refmap_calls++; |
| |
| // Visitor |
| TestReferenceMapVisitor mapper(soa.Self()); |
| mapper.WalkStack(); |
| |
| return count + 1; |
| } |
| |
| } // namespace art |