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      1 /*
      2  * Copyright (C) 2016 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 package art;
     18 
     19 import java.lang.ref.Reference;
     20 import java.lang.reflect.Constructor;
     21 import java.lang.reflect.Proxy;
     22 import java.util.ArrayList;
     23 import java.util.Arrays;
     24 import java.util.Comparator;
     25 
     26 public class Test912Art {
     27   public static void run() throws Exception {
     28     doTest();
     29   }
     30 
     31   public static void doTest() throws Exception {
     32     testClassEvents();
     33   }
     34 
     35   private static void testClassEvents() throws Exception {
     36     // Note: the JIT part of this test is about the JIT pulling in a class not yet touched by
     37     //       anything else in the system. This could be the verifier or the interpreter. We
     38     //       block the interpreter by calling ensureJitCompiled. The verifier, however, must
     39     //       run in configurations where dex2oat didn't verify the class itself. So explicitly
     40     //       check whether the class has been already loaded, and skip then.
     41     // TODO: Add multiple configurations to the run script once that becomes easier to do.
     42     if (hasJit() && !isLoadedClass("Lart/Test912Art$ClassD;")) {
     43       testClassEventsJit();
     44     }
     45   }
     46 
     47   private static void testClassEventsJit() throws Exception {
     48     enableClassLoadSeenEvents(true);
     49 
     50     testClassEventsJitImpl();
     51 
     52     enableClassLoadSeenEvents(false);
     53 
     54     if (!hadLoadEvent()) {
     55       throw new RuntimeException("Did not get expected load event.");
     56     }
     57   }
     58 
     59   private static void testClassEventsJitImpl() throws Exception {
     60     ensureJitCompiled(Test912Art.class, "testClassEventsJitImpl");
     61 
     62     if (ClassD.x != 1) {
     63       throw new RuntimeException("Unexpected value");
     64     }
     65   }
     66 
     67   private static native void ensureJitCompiled(Class<?> c, String name);
     68 
     69   private static native boolean hasJit();
     70   private static native boolean isLoadedClass(String name);
     71   private static native void enableClassLoadSeenEvents(boolean b);
     72   private static native boolean hadLoadEvent();
     73 
     74   public static class ClassD {
     75     static int x = 1;
     76   }
     77 }
     78