| /* |
| * Copyright (c) 2010, 2018, 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. |
| */ |
| |
| /* |
| * @test |
| * |
| * @summary converted from VM Testbase jit/escape/AdaptiveBlocking/AdaptiveBlocking001. |
| * VM Testbase keywords: [jit, quick] |
| * VM Testbase readme: |
| * This is a basic JIT compiler adaptive blocking test. The test runs 2 threads |
| * contending for a shared resource. In the first round, the lock is held for |
| * a short period of time, provoking spinlock-style locking. In the second round, |
| * the lock is held for a long period of time, provoking blocked locking. The |
| * described scenario is repeated numRounds (specified by the -numRounds |
| * parameter) times. |
| * |
| * @library /vmTestbase |
| * /test/lib |
| * @run driver jdk.test.lib.FileInstaller . . |
| * @build jit.escape.AdaptiveBlocking.AdaptiveBlocking001.AdaptiveBlocking001 |
| * @run driver/timeout=300 ExecDriver --java -server -Xcomp -XX:+DoEscapeAnalysis |
| * jit.escape.AdaptiveBlocking.AdaptiveBlocking001.AdaptiveBlocking001 -numRounds 10 |
| */ |
| |
| package jit.escape.AdaptiveBlocking.AdaptiveBlocking001; |
| |
| import nsk.share.TestFailure; |
| |
| class AdaptiveBlocking001 |
| { |
| public static int numRounds = 10; |
| |
| private static Object sharedLock = new Object(); |
| private static boolean lockEntered1; |
| private static boolean lockEntered2; |
| |
| private static boolean latentLocks; |
| |
| private static boolean done; |
| |
| private static boolean failed; |
| |
| public static void main( String[] args ) |
| { |
| System.out.println( "Adaptive blocking test" ); |
| |
| parseArgs( args ); |
| |
| for( int i=0; i < numRounds; ++i ) |
| { |
| doRound(i, false); |
| doRound(i, true); |
| } |
| |
| if( !failed ) |
| System.out.println( "TEST PASSED" ); |
| else |
| throw new TestFailure( "TEST FAILED" ); |
| } |
| |
| private static void parseArgs( String[] args ) |
| { |
| for( int i=0; i < args.length; ++i ) |
| { |
| String arg = args[i]; |
| String val; |
| |
| if( arg.equals( "-numRounds" ) ) |
| { |
| if( ++i < args.length ) |
| val = args[i]; |
| else |
| throw new TestFailure( "Need value for '" + arg + "' parameter" ); |
| |
| try { |
| numRounds = Integer.parseInt( val ); |
| } catch( NumberFormatException e ) { |
| throw new TestFailure( "Invalid value for '" + arg + "' parameter: " + val ); |
| } |
| } |
| else |
| { |
| throw new TestFailure( "Invalid argument: " + args ); |
| } |
| } |
| } |
| |
| private static void doRound(int ord, boolean latent_locks) |
| { |
| System.out.println( "round #" + ord + ", latent locks: " + (latent_locks ? "yes" : "no") + "..." ); |
| |
| latentLocks = latent_locks; |
| |
| Thread_1 t1 = new Thread_1(); |
| Thread_2 t2 = new Thread_2(); |
| |
| done = false; |
| |
| t1.start(); |
| t2.start(); |
| |
| for( int i=0; i < 10; ++i ) |
| { |
| try { |
| Thread.sleep( 1000 ); |
| } catch( InterruptedException e ) { |
| } |
| |
| if( done ) |
| break; |
| } |
| |
| done = true; |
| |
| try { |
| t1.join(); |
| t2.join(); |
| } catch( InterruptedException e ) { |
| } |
| } |
| |
| private static class Thread_1 extends Thread |
| { |
| public void run() |
| { |
| while( !done ) |
| { |
| synchronized( sharedLock ) |
| { |
| lockEntered1 = true; |
| if( lockEntered2 ) |
| { |
| Fail(); |
| done = true; |
| break; |
| } |
| |
| holdLock(); |
| |
| lockEntered1 = false; |
| } |
| } |
| } |
| } |
| |
| private static class Thread_2 extends Thread |
| { |
| public void run() |
| { |
| while( !done ) |
| { |
| synchronized( sharedLock ) |
| { |
| lockEntered2 = true; |
| if( lockEntered1 ) |
| { |
| Fail(); |
| done = true; |
| break; |
| } |
| |
| holdLock(); |
| |
| lockEntered2 = false; |
| } |
| } |
| } |
| } |
| |
| private static void holdLock() |
| { |
| if( latentLocks ) |
| { |
| try { |
| Thread.sleep( 500 ); |
| } catch( InterruptedException e ) { |
| } |
| } |
| } |
| |
| private static void Fail() |
| { |
| failed = true; |
| } |
| } |