1 /*
2 * Copyright (c) 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 /*
25 * @test
26 * @bug 8143214
27 * @summary Verify outputs of Thread.dumpStack() and Throwable.printStackTrace().
28 * This test should also been run against jdk9 successfully except of
29 * VM option MemberNameInStackFrame.
30 * @run main/othervm DumpStackTest
31 * @run main/othervm -Dstackwalk.newThrowable=false DumpStackTest
32 * @run main/othervm -Dstackwalk.newThrowable=true -XX:-MemberNameInStackFrame DumpStackTest
33 * @run main/othervm -Dstackwalk.newThrowable=true -XX:+MemberNameInStackFrame DumpStackTest
34 */
35
36 import java.lang.invoke.MethodHandle;
37 import java.lang.invoke.MethodHandles;
38 import java.lang.invoke.MethodType;
39 import java.lang.reflect.Method;
40 import java.util.Arrays;
41 import java.util.function.Consumer;
42
43 public class DumpStackTest {
44
45 public static void main(String args[]) {
46 test();
47 testThread();
48 testLambda();
49 testMethodInvoke();
50 testMethodHandle();
51 }
52
53 static class CallFrame {
54 final String classname;
55 final String methodname;
56 CallFrame(Class<?> c, String methodname) {
57 this(c.getName(), methodname);
58 }
59 CallFrame(String classname, String methodname) {
60 this.classname = classname;
61 this.methodname = methodname;
62 }
63
64 String getClassName() {
65 return classname;
66 }
67 String getMethodName() {
68 return methodname;
69 }
70 String getFileName() {
71 int i = classname.lastIndexOf('.');
72 int j = classname.lastIndexOf('$');
73 String name = classname.substring(i+1, j >= 0 ? j : classname.length());
74 return name + ".java";
75 }
76 @Override
77 public String toString() {
78 return classname + "." + methodname + "(" + getFileName() + ")";
79 }
80 }
81
82 static void test() {
83 CallFrame[] callStack = new CallFrame[] {
84 new CallFrame(Thread.class, "getStackTrace"),
85 new CallFrame(DumpStackTest.class, "test"),
86 new CallFrame(DumpStackTest.class, "main"),
87 // if invoked from jtreg
88 new CallFrame("sun.reflect.NativeMethodAccessorImpl", "invoke0"), // non-public class
89 new CallFrame("sun.reflect.NativeMethodAccessorImpl", "invoke"),
90 new CallFrame("sun.reflect.DelegatingMethodAccessorImpl", "invoke"),
91 new CallFrame(Method.class, "invoke"),
92 new CallFrame(Thread.class, "run"),
93 };
94
95 assertStackTrace(Thread.currentThread().getStackTrace(), callStack);
96 getStackTrace(callStack);
97 }
98
99 static void getStackTrace(CallFrame[] callStack) {
100 // this method is the top of the stack
101 callStack[0] = new CallFrame(DumpStackTest.class, "getStackTrace");
102
103 try {
104 throw new RuntimeException();
105 } catch(RuntimeException ex) {
106 assertStackTrace(ex.getStackTrace(), callStack);
107 }
108 }
109 static void testThread() {
110 Thread t1 = new Thread() {
111 public void run() {
112 c();
113 }
114
115 void c() {
116 CallFrame[] callStack = new CallFrame[] {
117 new CallFrame(Thread.class, "getStackTrace"),
118 new CallFrame(this.getClass(), "c"),
119 new CallFrame(this.getClass(), "run")
120 };
121 assertStackTrace(Thread.currentThread().getStackTrace(), callStack);
122 DumpStackTest.getStackTrace(callStack);
123 }
124 };
125 t1.start();
126 try {
127 t1.join();
128 } catch(InterruptedException e) {}
129 }
130
131 static void testLambda() {
132 Consumer<Void> c = (x) -> consumeLambda();
133 c.accept(null);
134 }
135
136 static void consumeLambda() {
137 CallFrame[] callStack = new CallFrame[]{
138 new CallFrame(Thread.class, "getStackTrace"),
139 new CallFrame(DumpStackTest.class, "consumeLambda"),
140 new CallFrame(DumpStackTest.class, "lambda$testLambda$0"),
141 new CallFrame(DumpStackTest.class, "testLambda"),
142 new CallFrame(DumpStackTest.class, "main"),
143 // if invoked from jtreg
144 new CallFrame("sun.reflect.NativeMethodAccessorImpl", "invoke0"),
145 new CallFrame("sun.reflect.NativeMethodAccessorImpl", "invoke"),
146 new CallFrame("sun.reflect.DelegatingMethodAccessorImpl", "invoke"),
147 new CallFrame(Method.class, "invoke"),
148 new CallFrame(Thread.class, "run")
149 };
150 assertStackTrace(Thread.currentThread().getStackTrace(), callStack);
151 DumpStackTest.getStackTrace(callStack);
152 }
153
154 static void testMethodInvoke() {
155 try {
156 Method m = DumpStackTest.class.getDeclaredMethod("methodInvoke");
157 m.invoke(null);
158 } catch(Exception e) {
159 throw new RuntimeException(e);
160 }
161 }
162
163 static void methodInvoke() {
164 CallFrame[] callStack = new CallFrame[] {
165 new CallFrame(Thread.class, "getStackTrace"),
166 new CallFrame(DumpStackTest.class, "methodInvoke"),
167 new CallFrame("sun.reflect.NativeMethodAccessorImpl", "invoke0"),
168 new CallFrame("sun.reflect.NativeMethodAccessorImpl", "invoke"),
169 new CallFrame("sun.reflect.DelegatingMethodAccessorImpl", "invoke"),
170 new CallFrame(Method.class, "invoke"),
171 new CallFrame(DumpStackTest.class, "testMethodInvoke"),
172 new CallFrame(DumpStackTest.class, "main"),
173 // if invoked from jtreg
174 new CallFrame("sun.reflect.NativeMethodAccessorImpl", "invoke0"),
175 new CallFrame("sun.reflect.NativeMethodAccessorImpl", "invoke"),
176 new CallFrame("sun.reflect.DelegatingMethodAccessorImpl", "invoke"),
177 new CallFrame(Method.class, "invoke"),
178 new CallFrame(Thread.class, "run")
179 };
180 assertStackTrace(Thread.currentThread().getStackTrace(), callStack);
181 DumpStackTest.getStackTrace(callStack);
182 }
183
184 static void testMethodHandle() {
185 MethodHandles.Lookup lookup = MethodHandles.lookup();
186 try {
187 MethodHandle handle = lookup.findStatic(DumpStackTest.class, "methodHandle",
188 MethodType.methodType(void.class));
189 handle.invoke();
190 } catch(Throwable t) {
191 throw new RuntimeException(t);
192 }
193 }
194
195 static void methodHandle() {
196 CallFrame[] callStack = new CallFrame[]{
197 new CallFrame(Thread.class, "getStackTrace"),
198 new CallFrame(DumpStackTest.class, "methodHandle"),
199 new CallFrame(DumpStackTest.class, "testMethodHandle"),
200 new CallFrame(DumpStackTest.class, "main"),
201 // if invoked from jtreg
202 new CallFrame("sun.reflect.NativeMethodAccessorImpl", "invoke0"),
203 new CallFrame("sun.reflect.NativeMethodAccessorImpl", "invoke"),
204 new CallFrame("sun.reflect.DelegatingMethodAccessorImpl", "invoke"),
205 new CallFrame(Method.class, "invoke"),
206 new CallFrame(Thread.class, "run")
207 };
208 assertStackTrace(Thread.currentThread().getStackTrace(), callStack);
209 DumpStackTest.getStackTrace(callStack);
210 }
211
212 static void assertStackTrace(StackTraceElement[] actual, CallFrame[] expected) {
213 System.out.println("--- Actual ---");
214 Arrays.stream(actual).forEach(e -> System.out.println(e));
215 System.out.println("--- Expected ---");
216 Arrays.stream(expected).forEach(e -> System.out.println(e));
217
218 for (int i = 0, j = 0; i < actual.length; i++) {
219 // filter test framework classes
220 if (actual[i].getClassName().startsWith("com.sun.javatest.regtest"))
221 continue;
222 assertEquals(actual[i], expected[j++], i);
223 }
224
225 }
226 static void assertEquals(StackTraceElement actual, CallFrame expected, int idx) {
227 if (!actual.getClassName().equals(expected.getClassName()) ||
228 !actual.getFileName().equals(expected.getFileName()) ||
229 !actual.getMethodName().equals(expected.getMethodName())) {
230 throw new RuntimeException("StackTraceElements mismatch at index " + idx +
231 ". Expected [" + expected + "], but get [" + actual + "]");
232 }
233 }
234 }