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      1 /*
      2  * Copyright (C) 2017 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 "android-base/macros.h"
     18 #include "jni.h"
     19 #include "jvmti.h"
     20 
     21 // Test infrastructure
     22 #include "test_env.h"
     23 
     24 #include "jvmti_helper.h"
     25 #include "scoped_local_ref.h"
     26 
     27 namespace art {
     28 namespace Test984ObsoleteInvoke {
     29 
     30 static constexpr size_t kNumFrames = 30;
     31 
     32 extern "C" JNIEXPORT jobject JNICALL Java_art_Test984_getFirstObsoleteMethod984(JNIEnv* env,
     33                                                                                 jclass) {
     34   jthread cur;
     35   jint frame_count;
     36   jvmtiFrameInfo frames[kNumFrames];
     37   // jint cur_start = 0;
     38   if (JvmtiErrorToException(env, jvmti_env, jvmti_env->GetCurrentThread(&cur))) {
     39     // ERROR
     40     return nullptr;
     41   }
     42   if (JvmtiErrorToException(env, jvmti_env,
     43                             jvmti_env->GetStackTrace(cur,
     44                                                      0,
     45                                                      kNumFrames,
     46                                                      frames,
     47                                                      &frame_count))) {
     48     // ERROR
     49     return nullptr;
     50   }
     51   for (jint i = 0; i < frame_count; i++) {
     52     jmethodID method = frames[i].method;
     53     jboolean is_obsolete = false;
     54     if (JvmtiErrorToException(env, jvmti_env, jvmti_env->IsMethodObsolete(method, &is_obsolete))) {
     55       // ERROR
     56       return nullptr;
     57     }
     58     if (is_obsolete) {
     59       return env->ToReflectedMethod(env->FindClass("java/lang/reflect/Method"),
     60                                     method,
     61                                     JNI_TRUE);
     62     }
     63   }
     64   ScopedLocalRef<jclass> rt_exception(env, env->FindClass("java/lang/RuntimeException"));
     65   env->ThrowNew(rt_exception.get(), "Unable to find obsolete method!");
     66   return nullptr;
     67 }
     68 
     69 }  // namespace Test984ObsoleteInvoke
     70 }  // namespace art
     71