1 /*
2 * Copyright (c) 2016, 2018, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 /**
27 * @test
28 * @summary Intrinsic for JFR
29 * @key jfr
30 *
31 * @library /lib /
32 *
33 *
34 *
35 * @build sun.hotspot.WhiteBox
36 * @build ClassFileInstaller
37 *
38 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
39 * sun.hotspot.WhiteBox$WhiteBoxPermission
40 *
41 * @run main/othervm -Xbootclasspath/a:. -ea -Xmixed -Xbatch -XX:TieredStopAtLevel=4 -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
42 * jdk.jfr.jvm.TestJFRIntrinsic
43 *
44 * @run main/othervm -Xbootclasspath/a:. -ea -Xmixed -Xbatch -XX:TieredStopAtLevel=1 -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
45 * jdk.jfr.jvm.TestJFRIntrinsic
46 */
47
48 package jdk.jfr.jvm;
49
50 import java.lang.reflect.Method;
51 import java.util.Arrays;
52 import java.util.stream.IntStream;
53 import jdk.jfr.internal.JVM;
54 import jdk.test.lib.Platform;
55 import sun.hotspot.WhiteBox;
56 import sun.hotspot.code.NMethod;
57
58 public class TestJFRIntrinsic {
59
60 private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
61 public Object eventWriter;
62
63 public static void main(String... args) throws Exception {
64 /*
65 Temporarily excluded until getClassId is reworked to accommodate epoch shift tagging
66 Method classid = TestJFRIntrinsic.class.getDeclaredMethod("getClassIdIntrinsic", Class.class);
67 ti.runIntrinsicTest(classid);
68 */
69 TestJFRIntrinsic ti = new TestJFRIntrinsic();
70 Method eventWriterMethod = TestJFRIntrinsic.class.getDeclaredMethod("getEventWriterIntrinsic", Class.class);
71 ti.runIntrinsicTest(eventWriterMethod);
72 }
73
74 /*
75 public void getClassIdIntrinsic(Class<?> cls) {
76 long exp = JVM.getClassId(cls);
77 if (exp == 0) {
78 throw new RuntimeException("Class id is zero");
79 }
80 }
81 */
82
83 public void getEventWriterIntrinsic(Class<?> cls) {
84 Object o = JVM.getEventWriter();
85 if (o != null) {
86 eventWriter = o;
87 }
88 }
89
90 void runIntrinsicTest(Method method) throws Exception {
91 if (getMaxCompilationLevel() < 1) {
92 /* no compiler */
93 return;
94 }
95 /* load it */
96 try {
97 method.invoke(this, TestJFRIntrinsic.class);
98 } catch(Exception e) {
99 throw new RuntimeException(e);
100 }
101
102 int[] lvls = getAvailableCompilationLevels();
103 for (int i : lvls) {
104 //if (!WHITE_BOX.enqueueMethodForCompilation(method, i)) {
105 // throw new RuntimeException("Failed to enqueue method on level: " + i);
106 //}
107
108 //if (WHITE_BOX.isMethodCompiled(method)) {
109 // NMethod nm = NMethod.get(method, false);
110 // if (nm.comp_level != i) {
111 // throw new RuntimeException("Failed to compile on correct level: " + i);
112 // }
113 // System.out.println("Compiled " + method + " on level " + i);
114 //}
115 }
116 }
117
118 /* below is copied from CompilerUtil in hotspot test lib, removed this when it's moved */
119
120 /**
121 * Returns available compilation levels
122 *
123 * @return int array with compilation levels
124 */
125 public static int[] getAvailableCompilationLevels() {
126 if (!WhiteBox.getWhiteBox().getBooleanVMFlag("UseCompiler")) {
127 return new int[0];
128 }
129 if (WhiteBox.getWhiteBox().getBooleanVMFlag("TieredCompilation")) {
130 Long flagValue = WhiteBox.getWhiteBox()
131 .getIntxVMFlag("TieredStopAtLevel");
132 int maxLevel = flagValue.intValue();
133 return IntStream.rangeClosed(1, maxLevel).toArray();
134 } else {
135 if (Platform.isServer() && !Platform.isEmulatedClient()) {
136 return new int[]{4};
137 }
138 if (Platform.isClient() || Platform.isMinimal() || Platform.isEmulatedClient()) {
139 return new int[]{1};
140 }
141 }
142 return new int[0];
143 }
144
145 /**
146 * Returns maximum compilation level available
147 * @return an int value representing maximum compilation level available
148 */
149 public static int getMaxCompilationLevel() {
150 return Arrays.stream(getAvailableCompilationLevels())
151 .max()
152 .getAsInt();
153 }
154 }