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 * @requires vm.hasJFR
31 * @library /test/lib
32 *
33 * @modules jdk.jfr/jdk.jfr.internal
34 * java.base/jdk.internal.misc
35 * java.management
36 *
37 * @build sun.hotspot.WhiteBox
38 * @build ClassFileInstaller
39 *
40 * @run driver ClassFileInstaller sun.hotspot.WhiteBox
41 * sun.hotspot.WhiteBox$WhiteBoxPermission
42 *
43 * @run main/othervm -Xbootclasspath/a:. -ea -Xmixed -Xbatch -XX:TieredStopAtLevel=4 -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
44 * jdk.jfr.jvm.TestJFRIntrinsic
45 *
46 * @run main/othervm -Xbootclasspath/a:. -ea -Xmixed -Xbatch -XX:TieredStopAtLevel=1 -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI
47 * jdk.jfr.jvm.TestJFRIntrinsic
48 */
49
50 package jdk.jfr.jvm;
51
52 import java.lang.reflect.Method;
53 import java.util.Arrays;
54 import java.util.stream.IntStream;
55 import jdk.jfr.internal.JVM;
56 import jdk.test.lib.Platform;
57 import sun.hotspot.WhiteBox;
58 import sun.hotspot.code.NMethod;
59
60 public class TestJFRIntrinsic {
61
62 private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
63 public Object eventWriter;
64
65 public static void main(String... args) throws Exception {
66 /*
67 Temporarily excluded until getClassId is reworked to accommodate epoch shift tagging
68 Method classid = TestJFRIntrinsic.class.getDeclaredMethod("getClassIdIntrinsic", Class.class);
69 ti.runIntrinsicTest(classid);
70 */
71 TestJFRIntrinsic ti = new TestJFRIntrinsic();
72 Method eventWriterMethod = TestJFRIntrinsic.class.getDeclaredMethod("getEventWriterIntrinsic", Class.class);
73 ti.runIntrinsicTest(eventWriterMethod);
74 }
75
76 /*
77 public void getClassIdIntrinsic(Class<?> cls) {
78 long exp = JVM.getClassId(cls);
79 if (exp == 0) {
80 throw new RuntimeException("Class id is zero");
81 }
82 }
83 */
84
85 public void getEventWriterIntrinsic(Class<?> cls) {
86 Object o = JVM.getEventWriter();
87 if (o != null) {
88 eventWriter = o;
89 }
90 }
91
92 void runIntrinsicTest(Method method) throws Exception {
93 if (getMaxCompilationLevel() < 1) {
94 /* no compiler */
95 return;
96 }
97 /* load it */
98 try {
99 method.invoke(this, TestJFRIntrinsic.class);
100 } catch(Exception e) {
101 throw new RuntimeException(e);
102 }
103
104 int[] lvls = getAvailableCompilationLevels();
105 for (int i : lvls) {
106 if (!WHITE_BOX.enqueueMethodForCompilation(method, i)) {
107 throw new RuntimeException("Failed to enqueue method on level: " + i);
108 }
109
110 if (WHITE_BOX.isMethodCompiled(method)) {
111 NMethod nm = NMethod.get(method, false);
112 if (nm.comp_level != i) {
113 throw new RuntimeException("Failed to compile on correct level: " + i);
114 }
115 System.out.println("Compiled " + method + " on level " + i);
116 }
117 }
118 }
119
120 /* below is copied from CompilerUtil in hotspot test lib, removed this when it's moved */
121
122 /**
123 * Returns available compilation levels
124 *
125 * @return int array with compilation levels
126 */
127 public static int[] getAvailableCompilationLevels() {
128 if (!WhiteBox.getWhiteBox().getBooleanVMFlag("UseCompiler")) {
129 return new int[0];
130 }
131 if (WhiteBox.getWhiteBox().getBooleanVMFlag("TieredCompilation")) {
132 Long flagValue = WhiteBox.getWhiteBox()
133 .getIntxVMFlag("TieredStopAtLevel");
134 int maxLevel = flagValue.intValue();
135 return IntStream.rangeClosed(1, maxLevel).toArray();
136 } else {
137 if (Platform.isServer() && !Platform.isEmulatedClient()) {
138 return new int[]{4};
139 }
140 if (Platform.isClient() || Platform.isMinimal() || Platform.isEmulatedClient()) {
141 return new int[]{1};
142 }
143 }
144 return new int[0];
145 }
146
147 /**
148 * Returns maximum compilation level available
149 * @return an int value representing maximum compilation level available
150 */
151 public static int getMaxCompilationLevel() {
152 return Arrays.stream(getAvailableCompilationLevels())
153 .max()
154 .getAsInt();
155 }
156 }