--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/lang/StackWalker/VerifyStackTrace.java Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,290 @@
+/*
+ * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.lang.reflect.InvocationTargetException;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+import java.util.EnumSet;
+import java.util.concurrent.atomic.AtomicLong;
+import java.lang.StackWalker.StackFrame;
+import java.lang.invoke.MethodHandle;
+import java.lang.invoke.MethodHandles;
+import java.lang.invoke.MethodType;
+import java.util.Objects;
+
+import static java.lang.StackWalker.Option.*;
+
+/**
+ * @test
+ * @bug 8140450
+ * @summary Verify stack trace information obtained with respect to StackWalker
+ * options, when the stack contains lambdas, method handle invoke
+ * virtual calls, and reflection.
+ * @run main/othervm VerifyStackTrace
+ * @run main/othervm/java.security.policy=stackwalk.policy VerifyStackTrace
+ * @author danielfuchs
+ */
+public class VerifyStackTrace {
+
+ static interface TestCase {
+ StackWalker walker();
+ String description();
+ String expected();
+ }
+ static final class TestCase1 implements TestCase {
+ private final StackWalker walker = StackWalker.getInstance(RETAIN_CLASS_REFERENCE);
+
+ private final String description = "StackWalker.getInstance(" +
+ "StackWalker.Option.RETAIN_CLASS_REFERENCE)";
+
+ // Note: line numbers and lambda hashes will be erased when
+ // comparing stack traces. However, the stack may change
+ // if some methods are being renamed in the code base.
+ // If the JDKcode base changes and the test fails because of that,
+ // then after validating that the actual stack trace obtained
+ // is indeed correct (no frames are skipped that shouldn't)
+ // then you can cut & paste the <-- actual --> stack printed in the
+ // test output in here:
+ private final String expected =
+ "1: VerifyStackTrace.lambda$test$1(VerifyStackTrace.java:209)\n" +
+ "2: VerifyStackTrace$Handle.execute(VerifyStackTrace.java:145)\n" +
+ "3: VerifyStackTrace$Handle.run(VerifyStackTrace.java:158)\n" +
+ "4: VerifyStackTrace.invoke(VerifyStackTrace.java:188)\n" +
+ "5: VerifyStackTrace$1.run(VerifyStackTrace.java:218)\n" +
+ "6: java.base/java.security.AccessController.doPrivileged(Native Method)\n" +
+ "7: VerifyStackTrace.test(VerifyStackTrace.java:227)\n" +
+ "8: VerifyStackTrace.main(VerifyStackTrace.java:182)\n";
+
+ @Override public StackWalker walker() { return walker;}
+ @Override public String description() { return description;}
+ @Override public String expected() { return expected;}
+ }
+ static final class TestCase2 implements TestCase {
+ private final StackWalker walker = StackWalker.getInstance(
+ EnumSet.of(RETAIN_CLASS_REFERENCE, SHOW_REFLECT_FRAMES));
+
+ private final String description = "nStackWalker.getInstance(" +
+ "StackWalker.Option.RETAIN_CLASS_REFERENCE, " +
+ "StackWalker.Option.SHOW_REFLECT_FRAMES)";
+
+ // Note: line numbers and lambda hashes will be erased when
+ // comparing stack traces. However, the stack may change
+ // if some methods are being renamed in the code base.
+ // If the JDK code base changes and the test fails because of that,
+ // then after validating that the actual stack trace obtained
+ // is indeed correct (no frames are skipped that shouldn't)
+ // then you can cut & paste the <-- actual --> stack printed in the
+ // test output in here (don't forget the final \n):
+ private final String expected =
+ "1: VerifyStackTrace.lambda$test$1(VerifyStackTrace.java:211)\n" +
+ "2: VerifyStackTrace$Handle.execute(VerifyStackTrace.java:147)\n" +
+ "3: VerifyStackTrace$Handle.run(VerifyStackTrace.java:160)\n" +
+ "4: VerifyStackTrace.invoke(VerifyStackTrace.java:190)\n" +
+ "5: java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\n" +
+ "6: java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)\n" +
+ "7: java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\n" +
+ "8: java.base/java.lang.reflect.Method.invoke(Method.java:520)\n" +
+ "9: VerifyStackTrace$1.run(VerifyStackTrace.java:220)\n" +
+ "10: java.base/java.security.AccessController.doPrivileged(Native Method)\n" +
+ "11: VerifyStackTrace.test(VerifyStackTrace.java:229)\n" +
+ "12: VerifyStackTrace.main(VerifyStackTrace.java:185)\n";
+
+ @Override public StackWalker walker() { return walker;}
+ @Override public String description() { return description;}
+ @Override public String expected() { return expected;}
+ }
+ static class TestCase3 implements TestCase {
+ private final StackWalker walker = StackWalker.getInstance(
+ EnumSet.of(RETAIN_CLASS_REFERENCE, SHOW_HIDDEN_FRAMES));
+
+ private final String description = "StackWalker.getInstance(" +
+ "StackWalker.Option.RETAIN_CLASS_REFERENCE, " +
+ "StackWalker.Option.SHOW_HIDDEN_FRAMES)";
+
+ // Note: line numbers and lambda hashes will be erased when
+ // comparing stack traces. However, the stack may change
+ // if some methods are being renamed in the code base.
+ // If the JDK code base changes and the test fails because of that,
+ // then after validating that the actual stack trace obtained
+ // is indeed correct (no frames are skipped that shouldn't)
+ // then you can cut & paste the <-- actual --> stack printed in the
+ // test output in here (don't forget the final \n):
+ private final String expected =
+ "1: VerifyStackTrace.lambda$test$1(VerifyStackTrace.java:213)\n" +
+ "2: VerifyStackTrace$$Lambda$1/662441761.run(Unknown Source)\n" +
+ "3: VerifyStackTrace$Handle.execute(VerifyStackTrace.java:149)\n" +
+ "4: java.base/java.lang.invoke.LambdaForm$DMH/2008017533.invokeVirtual_LL_V(LambdaForm$DMH)\n" +
+ "5: java.base/java.lang.invoke.LambdaForm$MH/1395089624.invoke_MT(LambdaForm$MH)\n" +
+ "6: VerifyStackTrace$Handle.run(VerifyStackTrace.java:162)\n" +
+ "7: VerifyStackTrace.invoke(VerifyStackTrace.java:192)\n" +
+ "8: java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)\n" +
+ "9: java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)\n" +
+ "10: java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)\n" +
+ "11: java.base/java.lang.reflect.Method.invoke(Method.java:520)\n" +
+ "12: VerifyStackTrace$1.run(VerifyStackTrace.java:222)\n" +
+ "13: java.base/java.security.AccessController.doPrivileged(Native Method)\n" +
+ "14: VerifyStackTrace.test(VerifyStackTrace.java:231)\n" +
+ "15: VerifyStackTrace.main(VerifyStackTrace.java:188)\n";
+
+ @Override public StackWalker walker() { return walker;}
+ @Override public String description() { return description;}
+ @Override public String expected() { return expected;}
+ }
+
+ static final class TestCase4 extends TestCase3 {
+ private final StackWalker walker = StackWalker.getInstance(
+ EnumSet.allOf(StackWalker.Option.class));
+
+ private final String description = "StackWalker.getInstance(" +
+ "StackWalker.Option.RETAIN_CLASS_REFERENCE, " +
+ "StackWalker.Option.SHOW_HIDDEN_FRAMES, " +
+ "StackWalker.Option.SHOW_REFLECT_FRAMES)";
+
+ @Override public StackWalker walker() {return walker;}
+ @Override public String description() {return description;}
+ }
+
+ public static class Handle implements Runnable {
+
+ Runnable impl;
+ public Handle(Runnable run) {
+ this.impl = run;
+ }
+
+ public void execute(Runnable run) {
+ run.run();
+ }
+
+ public void run() {
+ MethodHandles.Lookup lookup = MethodHandles.lookup();
+ MethodHandle handle = null;
+ try {
+ handle = lookup.findVirtual(Handle.class, "execute",
+ MethodType.methodType(void.class, Runnable.class));
+ } catch(NoSuchMethodException | IllegalAccessException x) {
+ throw new RuntimeException(x);
+ }
+ try {
+ handle.invoke(this, impl);
+ } catch(Error | RuntimeException x) {
+ throw x;
+ } catch(Throwable t) {
+ throw new RuntimeException(t);
+ }
+ }
+ }
+
+ static String prepare(String produced, boolean eraseSensitiveInfo) {
+ if (eraseSensitiveInfo) {
+ // Erase sensitive information before comparing:
+ // comparing line numbers is too fragile, so we just erase them
+ // out before comparing. We also erase the hash-like names of
+ // synthetic frames introduced by lambdas & method handles
+ return produced.replaceAll(":[1-9][0-9]*\\)", ":00)")
+ .replaceAll("/[0-9]+\\.run", "/xxxxxxxx.run")
+ .replaceAll("/[0-9]+\\.invoke", "/xxxxxxxx.invoke")
+ // LFs may or may not be pre-generated, making frames differ
+ .replaceAll("DirectMethodHandle\\$Holder", "LambdaForm\\$DMH")
+ .replaceAll("Invokers\\$Holder", "LambdaForm\\$MH")
+ .replaceAll("MH\\.invoke", "MH/xxxxxxxx.invoke")
+ // invoke frames may or may not have basic method type
+ // information encoded for diagnostic purposes
+ .replaceAll("xx\\.invoke([A-Za-z]*)_[A-Z_]+", "xx.invoke$1")
+ .replaceAll("\\$[0-9]+", "\\$??");
+ } else {
+ return produced;
+ }
+ }
+
+
+ public static void main(String[] args) {
+ test(new TestCase1());
+ test(new TestCase2());
+ test(new TestCase3());
+ test(new TestCase4());
+ }
+
+ public static void invoke(Runnable run) {
+ run.run();
+ }
+
+ static final class Recorder {
+ boolean found; // stop recording after main
+ public void recordSTE(long counter, StringBuilder s, StackFrame f) {
+ if (found) return;
+ found = VerifyStackTrace.class.equals(f.getDeclaringClass()) &&
+ "main".equals(f.getMethodName());
+ String line = String.format("%d: %s", counter, f.toStackTraceElement());
+ s.append(line).append('\n');
+ System.out.println(line);
+ }
+ }
+
+
+ static void test(TestCase test) {
+ System.out.println("\nTesting: " + test.description());
+ final AtomicLong counter = new AtomicLong();
+ final StringBuilder builder = new StringBuilder();
+ final Recorder recorder = new Recorder();
+ final Runnable run = () -> test.walker().forEach(
+ f -> recorder.recordSTE(counter.incrementAndGet(), builder, f));
+ final Handle handle = new Handle(run);
+
+ // We're not using lambda on purpose here. We want the anonymous
+ // class on the stack.
+ PrivilegedAction<Object> pa = new PrivilegedAction<Object>() {
+ @Override
+ public Object run() {
+ try {
+ return VerifyStackTrace.class
+ .getMethod("invoke", Runnable.class)
+ .invoke(null, handle);
+ } catch (NoSuchMethodException
+ | IllegalAccessException
+ | InvocationTargetException ex) {
+ System.out.flush();
+ throw new RuntimeException(ex);
+ }
+ }
+ };
+ AccessController.doPrivileged(pa);
+ System.out.println("Main found: " + recorder.found);
+ if (!Objects.equals(prepare(test.expected(), true), prepare(builder.toString(), true))) {
+ System.out.flush();
+ try {
+ // sleep to make it less likely that System.out & System.err will
+ // interleave.
+ Thread.sleep(1000);
+ } catch (InterruptedException ex) {
+ }
+ System.err.println("\nUnexpected stack trace: "
+ + "\n<!-- expected -->\n"
+ + prepare(test.expected(), true)
+ + "\n<-- actual -->\n"
+ + prepare(builder.toString(), false));
+ throw new RuntimeException("Unexpected stack trace for: " + test.description());
+ }
+ }
+
+
+}