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