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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 package art;
     18 
     19 import java.lang.reflect.Field;
     20 import java.lang.reflect.Method;
     21 
     22 public class Trace {
     23   public static native void enableTracing(Class<?> methodClass,
     24                                           Method entryMethod,
     25                                           Method exitMethod,
     26                                           Method fieldAccess,
     27                                           Method fieldModify,
     28                                           Method singleStep,
     29                                           Thread thr);
     30   public static native void disableTracing(Thread thr);
     31 
     32   public static void enableFieldTracing(Class<?> methodClass,
     33                                         Method fieldAccess,
     34                                         Method fieldModify,
     35                                         Thread thr) {
     36     enableTracing(methodClass, null, null, fieldAccess, fieldModify, null, thr);
     37   }
     38 
     39   public static void enableMethodTracing(Class<?> methodClass,
     40                                          Method entryMethod,
     41                                          Method exitMethod,
     42                                          Thread thr) {
     43     enableTracing(methodClass, entryMethod, exitMethod, null, null, null, thr);
     44   }
     45 
     46   public static void enableSingleStepTracing(Class<?> methodClass,
     47                                              Method singleStep,
     48                                              Thread thr) {
     49     enableTracing(methodClass, null, null, null, null, singleStep, thr);
     50   }
     51 
     52   public static native void watchFieldAccess(Field f);
     53   public static native void watchFieldModification(Field f);
     54   public static native void watchAllFieldAccesses();
     55   public static native void watchAllFieldModifications();
     56 
     57   // the names, arguments, and even line numbers of these functions are embedded in the tests so we
     58   // need to add to the bottom and not modify old ones to maintain compat.
     59   public static native void enableTracing2(Class<?> methodClass,
     60                                            Method entryMethod,
     61                                            Method exitMethod,
     62                                            Method fieldAccess,
     63                                            Method fieldModify,
     64                                            Method singleStep,
     65                                            Method ThreadStart,
     66                                            Method ThreadEnd,
     67                                            Thread thr);
     68 }
     69