get_live_vreg_jni.cc revision 43855ccb01703b188777fe59e1110e6a23803171 
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.h"
21#include "stack.h"
22#include "thread.h"
23
24namespace art {
25
26namespace {
27
28class TestVisitor : public StackVisitor {
29 public:
30  TestVisitor(Thread* thread, Context* context) SHARED_REQUIRES(Locks::mutator_lock_)
31      : StackVisitor(thread, context, StackVisitor::StackWalkKind::kIncludeInlinedFrames) {}
32
33  bool VisitFrame() SHARED_REQUIRES(Locks::mutator_lock_) {
34    ArtMethod* m = GetMethod();
35    std::string m_name(m->GetName());
36
37    if (m_name.compare("testLiveArgument") == 0) {
38      found_method_ = true;
39      uint32_t value = 0;
40      CHECK(GetVReg(m, 0, kIntVReg, &value));
41      CHECK_EQ(value, 42u);
42    } else if (m_name.compare("testIntervalHole") == 0) {
43      found_method_ = true;
44      uint32_t value = 0;
45      if (GetCurrentQuickFrame() != nullptr &&
46          m->IsOptimized(sizeof(void*)) &&
47          !Runtime::Current()->IsDebuggable()) {
48        CHECK_EQ(GetVReg(m, 0, kIntVReg, &value), false);
49      } else {
50        CHECK(GetVReg(m, 0, kIntVReg, &value));
51        CHECK_EQ(value, 1u);
52      }
53    }
54
55    return true;
56  }
57
58  // Value returned to Java to ensure the methods testSimpleVReg and testPairVReg
59  // have been found and tested.
60  bool found_method_ = false;
61};
62
63extern "C" JNIEXPORT void JNICALL Java_Main_doStaticNativeCallLiveVreg(JNIEnv*, jclass) {
64  ScopedObjectAccess soa(Thread::Current());
65  std::unique_ptr<Context> context(Context::Create());
66  TestVisitor visitor(soa.Self(), context.get());
67  visitor.WalkStack();
68  CHECK(visitor.found_method_);
69}
70
71}  // namespace
72
73}  // namespace art
74