| /* |
| * 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$1.run(VerifyStackTrace.java:218)\n" + |
| "6: java.security.AccessController.doPrivileged(java.base/Native Method)\n" + |
| "7: VerifyStackTrace.test(VerifyStackTrace.java:227)\n" + |
| "8: VerifyStackTrace.main(VerifyStackTrace.java:182)\n"; |
| |
| @Override public StackWalker walker() { return walker;} |
| @Override public String description() { return description;} |
| @Override public String expected() { return expected;} |
| } |
| static final class TestCase2 implements TestCase { |
| private final StackWalker walker = StackWalker.getInstance( |
| EnumSet.of(RETAIN_CLASS_REFERENCE, SHOW_REFLECT_FRAMES)); |
| |
| private final String description = "nStackWalker.getInstance(" + |
| "StackWalker.Option.RETAIN_CLASS_REFERENCE, " + |
| "StackWalker.Option.SHOW_REFLECT_FRAMES)"; |
| |
| // Note: line numbers and lambda hashes will be erased when |
| // comparing stack traces. However, the stack may change |
| // if some methods are being renamed in the code base. |
| // If the JDK code base changes and the test fails because of that, |
| // then after validating that the actual stack trace obtained |
| // is indeed correct (no frames are skipped that shouldn't) |
| // then you can cut & paste the <-- actual --> stack printed in the |
| // test output in here (don't forget the final \n): |
| private final String expected = |
| "1: VerifyStackTrace.lambda$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: sun.reflect.NativeMethodAccessorImpl.invoke0(java.base/Native Method)\n" + |
| "6: sun.reflect.NativeMethodAccessorImpl.invoke(java.base/NativeMethodAccessorImpl.java:62)\n" + |
| "7: sun.reflect.DelegatingMethodAccessorImpl.invoke(java.base/DelegatingMethodAccessorImpl.java:43)\n" + |
| "8: java.lang.reflect.Method.invoke(java.base/Method.java:520)\n" + |
| "9: VerifyStackTrace$1.run(VerifyStackTrace.java:220)\n" + |
| "10: java.security.AccessController.doPrivileged(java.base/Native Method)\n" + |
| "11: VerifyStackTrace.test(VerifyStackTrace.java:229)\n" + |
| "12: VerifyStackTrace.main(VerifyStackTrace.java:185)\n"; |
| |
| @Override public StackWalker walker() { return walker;} |
| @Override public String description() { return description;} |
| @Override public String expected() { return expected;} |
| } |
| static class TestCase3 implements TestCase { |
| private final StackWalker walker = StackWalker.getInstance( |
| EnumSet.of(RETAIN_CLASS_REFERENCE, SHOW_HIDDEN_FRAMES)); |
| |
| private final String description = "StackWalker.getInstance(" + |
| "StackWalker.Option.RETAIN_CLASS_REFERENCE, " + |
| "StackWalker.Option.SHOW_HIDDEN_FRAMES)"; |
| |
| // Note: line numbers and lambda hashes will be erased when |
| // comparing stack traces. However, the stack may change |
| // if some methods are being renamed in the code base. |
| // If the JDK code base changes and the test fails because of that, |
| // then after validating that the actual stack trace obtained |
| // is indeed correct (no frames are skipped that shouldn't) |
| // then you can cut & paste the <-- actual --> stack printed in the |
| // test output in here (don't forget the final \n): |
| private final String expected = |
| "1: VerifyStackTrace.lambda$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.lang.invoke.LambdaForm$DMH/2008017533.invokeVirtual_LL_V(java.base/LambdaForm$DMH)\n" + |
| "5: java.lang.invoke.LambdaForm$MH/1395089624.invoke_MT(java.base/LambdaForm$MH)\n" + |
| "6: VerifyStackTrace$Handle.run(VerifyStackTrace.java:162)\n" + |
| "7: VerifyStackTrace.invoke(VerifyStackTrace.java:192)\n" + |
| "8: sun.reflect.NativeMethodAccessorImpl.invoke0(java.base/Native Method)\n" + |
| "9: sun.reflect.NativeMethodAccessorImpl.invoke(java.base/NativeMethodAccessorImpl.java:62)\n" + |
| "10: sun.reflect.DelegatingMethodAccessorImpl.invoke(java.base/DelegatingMethodAccessorImpl.java:43)\n" + |
| "11: java.lang.reflect.Method.invoke(java.base/Method.java:520)\n" + |
| "12: VerifyStackTrace$1.run(VerifyStackTrace.java:222)\n" + |
| "13: java.security.AccessController.doPrivileged(java.base/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("-internal/", "/").replaceAll("-ea/", "/") |
| .replaceAll("java.base@[0-9]+/", "java.base/") |
| .replaceAll("/[0-9]+\\.run", "/xxxxxxxx.run") |
| .replaceAll("/[0-9]+\\.invoke", "/xxxxxxxx.invoke") |
| .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()); |
| } |
| } |
| |
| |
| } |