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 * @library /test/lib
31 *
32 * @modules jdk.jfr/jdk.jfr.internal
33 * java.base/jdk.internal.misc
34 * java.management
35 *
36 * @build sun.hotspot.WhiteBox
37 * @build ClassFileInstaller
38 *
39 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
40 * sun.hotspot.WhiteBox$WhiteBoxPermission
41 *
42 * @run main/othervm -Xbootclasspath/a:. -ea -Xmixed -Xbatch -XX:TieredStopAtLevel=4 -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
43 * jdk.jfr.jvm.TestJFRIntrinsic
44 *
45 * @run main/othervm -Xbootclasspath/a:. -ea -Xmixed -Xbatch -XX:TieredStopAtLevel=1 -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
46 * jdk.jfr.jvm.TestJFRIntrinsic
47 */
48
49 package jdk.jfr.jvm;
50
51 import java.lang.reflect.Method;
52 import java.util.Arrays;
53 import java.util.stream.IntStream;
54 import jdk.jfr.internal.JVM;
55 import jdk.test.lib.Platform;
56 import sun.hotspot.WhiteBox;
57 import sun.hotspot.code.NMethod;
58
59 public class TestJFRIntrinsic {
60
61 private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
62 public Object eventWriter;
63
64 public static void main(String... args) throws Exception {
65 /*
66 Temporarily excluded until getClassId is reworked to accommodate epoch shift tagging
67 Method classid = TestJFRIntrinsic.class.getDeclaredMethod("getClassIdIntrinsic", Class.class);
68 ti.runIntrinsicTest(classid);
69 */
70 TestJFRIntrinsic ti = new TestJFRIntrinsic();
71 Method eventWriterMethod = TestJFRIntrinsic.class.getDeclaredMethod("getEventWriterIntrinsic", Class.class);
72 ti.runIntrinsicTest(eventWriterMethod);
73 }
74
75 /*
76 public void getClassIdIntrinsic(Class<?> cls) {
77 long exp = JVM.getClassId(cls);
78 if (exp == 0) {
79 throw new RuntimeException("Class id is zero");
80 }
81 }
82 */
83
84 public void getEventWriterIntrinsic(Class<?> cls) {
85 Object o = JVM.getEventWriter();
86 if (o != null) {
87 eventWriter = o;
88 }
89 }
90
91 void runIntrinsicTest(Method method) throws Exception {
92 if (getMaxCompilationLevel() < 1) {
93 /* no compiler */
94 return;
95 }
96 /* load it */
97 try {
98 method.invoke(this, TestJFRIntrinsic.class);
99 } catch(Exception e) {
100 throw new RuntimeException(e);
101 }
102
103 int[] lvls = getAvailableCompilationLevels();
104 for (int i : lvls) {
105 if (!WHITE_BOX.enqueueMethodForCompilation(method, i)) {
106 throw new RuntimeException("Failed to enqueue method on level: " + i);
107 }
108
109 if (WHITE_BOX.isMethodCompiled(method)) {
110 NMethod nm = NMethod.get(method, false);
111 if (nm.comp_level != i) {
112 throw new RuntimeException("Failed to compile on correct level: " + i);
113 }
114 System.out.println("Compiled " + method + " on level " + i);
115 }
116 }
117 }
118
119 /* below is copied from CompilerUtil in hotspot test lib, removed this when it's moved */
120
121 /**
122 * Returns available compilation levels
123 *
124 * @return int array with compilation levels
125 */
126 public static int[] getAvailableCompilationLevels() {
127 if (!WhiteBox.getWhiteBox().getBooleanVMFlag("UseCompiler")) {
128 return new int[0];
129 }
130 if (WhiteBox.getWhiteBox().getBooleanVMFlag("TieredCompilation")) {
131 Long flagValue = WhiteBox.getWhiteBox()
132 .getIntxVMFlag("TieredStopAtLevel");
133 int maxLevel = flagValue.intValue();
134 return IntStream.rangeClosed(1, maxLevel).toArray();
135 } else {
136 if (Platform.isServer() && !Platform.isEmulatedClient()) {
137 return new int[]{4};
138 }
139 if (Platform.isClient() || Platform.isMinimal() || Platform.isEmulatedClient()) {
140 return new int[]{1};
141 }
142 }
143 return new int[0];
144 }
145
146 /**
147 * Returns maximum compilation level available
148 * @return an int value representing maximum compilation level available
149 */
150 public static int getMaxCompilationLevel() {
151 return Arrays.stream(getAvailableCompilationLevels())
152 .max()
153 .getAsInt();
154 }
155 }