get_live_vreg_jni.cc revision 8e5bd18fc665d7ec5461ea068e98740a65da754c 
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 "jni.h"
19#include "mirror/art_method-inl.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_LOCKS_REQUIRED(Locks::mutator_lock_)
31      : StackVisitor(thread, context, StackVisitor::StackWalkKind::kIncludeInlinedFrames) {}
32
33  bool VisitFrame() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
34    mirror::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 (m->IsOptimized(sizeof(void*))) {
46        CHECK_EQ(GetVReg(m, 0, kIntVReg, &value), false);
47      } else {
48        CHECK(GetVReg(m, 0, kIntVReg, &value));
49        CHECK_EQ(value, 1u);
50      }
51    }
52
53    return true;
54  }
55
56  // Value returned to Java to ensure the methods testSimpleVReg and testPairVReg
57  // have been found and tested.
58  bool found_method_ = false;
59};
60
61extern "C" JNIEXPORT void JNICALL Java_Main_doStaticNativeCallLiveVreg(JNIEnv*, jclass) {
62  ScopedObjectAccess soa(Thread::Current());
63  std::unique_ptr<Context> context(Context::Create());
64  TestVisitor visitor(soa.Self(), context.get());
65  visitor.WalkStack();
66  CHECK(visitor.found_method_);
67}
68
69}  // namespace
70
71}  // namespace art
72