1 /*
   2  * Copyright (c) 2014, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 package compiler.codecache.dtrace;
  25 
  26 import jdk.test.lib.Utils;
  27 import sun.hotspot.WhiteBox;
  28 
  29 import java.lang.reflect.Executable;
  30 import java.util.ArrayList;
  31 import java.util.Arrays;
  32 import java.util.Collections;
  33 import java.util.List;
  34 
  35 public class SegmentedCodeCacheDtraceTestWorker {
  36 
  37     private static final String METHOD1_NAME = "foo";
  38     private static final String METHOD2_NAME = "bar";
  39     private static final String METHOD3_NAME = "baz";
  40     public static final List<Executable> TESTED_METHODS_LIST;
  41     private final WhiteBox wb;
  42     private final int compLevels[];
  43 
  44     static {
  45         List<Executable> methods = new ArrayList<>();
  46         try {
  47             // method order is important. Need to place methods in call order,
  48             // to be able to verify results later
  49             methods.add(SegmentedCodeCacheDtraceTestWorker.class.getMethod(METHOD1_NAME));
  50             methods.add(SegmentedCodeCacheDtraceTestWorker.class.getMethod(METHOD2_NAME));
  51             methods.add(SegmentedCodeCacheDtraceTestWorker.class.getMethod(METHOD3_NAME));
  52         } catch (NoSuchMethodException e) {
  53             throw new Error("TESTBUG: no expected method found", e);
  54         }
  55         TESTED_METHODS_LIST = Collections.unmodifiableList(methods);
  56     }
  57 
  58     protected static final boolean BACKGROUND_COMPILATION
  59             = WhiteBox.getWhiteBox().getBooleanVMFlag("BackgroundCompilation");
  60 
  61     public static void main(String[] args) {
  62         if (args.length != 2 * TESTED_METHODS_LIST.size()) {
  63             throw new Error("Usage: java <thisClass> <fooCompLevel> <fooInlined>"
  64                     + "<barCompLevel> <barInlined> "
  65                     + "<bazCompLevel> <bazInlined>");
  66         } else {
  67             int compLevels[] = new int[TESTED_METHODS_LIST.size()];
  68             boolean inlines[] = new boolean[TESTED_METHODS_LIST.size()];
  69             for (int i = 0; i < TESTED_METHODS_LIST.size(); i++) {
  70                 compLevels[i] = Integer.parseInt(args[2 * i]);
  71                 inlines[i] = Boolean.parseBoolean(args[2 * i + 1]);
  72             }
  73             new SegmentedCodeCacheDtraceTestWorker(compLevels, inlines).test();
  74         }
  75     }
  76 
  77     public SegmentedCodeCacheDtraceTestWorker(int compLevels[], boolean inlines[]) {
  78         wb = WhiteBox.getWhiteBox();
  79         this.compLevels = Arrays.copyOf(compLevels, compLevels.length);
  80         for (int i = 0; i < compLevels.length; i++) {
  81             if (inlines[i]) {
  82                 wb.testSetForceInlineMethod(TESTED_METHODS_LIST.get(i), true);
  83             } else {
  84                 wb.testSetDontInlineMethod(TESTED_METHODS_LIST.get(i), true);
  85             }
  86         }
  87     }
  88 
  89     private void waitForCompilation(Executable executable, int compLevel) {
  90         if (compLevel > 0) {
  91             Utils.waitForCondition(() -> wb.isMethodCompiled(executable));
  92         }
  93     }
  94 
  95     protected void test() {
  96         for (int i = 0; i < TESTED_METHODS_LIST.size(); i++) {
  97             Executable method = TESTED_METHODS_LIST.get(i);
  98             int compLevel = compLevels[i];
  99             wb.enqueueMethodForCompilation(method, compLevel);
 100             waitForCompilation(method, compLevel);
 101         }
 102         foo();
 103     }
 104 
 105     public static void foo() {
 106         bar();
 107     }
 108 
 109     public static void bar() {
 110         baz();
 111     }
 112 
 113     public static void baz() {
 114         System.out.println("Reached baz method");
 115     }
 116 }