Mercurial > hg > graal-compiler
view test/compiler/6863420/Test.java @ 1378:9f5b60a14736
6939930: exception unwind changes in 6919934 hurts compilation speed
Reviewed-by: twisti
author | never |
---|---|
date | Thu, 15 Apr 2010 18:14:49 -0700 |
parents | 665be97e8704 |
children | c18cbe5936b8 |
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/* * Copyright 2009 D.E. Shaw. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ /** * @test * @bug 6863420 * @summary os::javaTimeNanos() go backward on Solaris x86 * * @run main/othervm Test */ public class Test { static long value = 0; static boolean got_backward_time = false; public static void main(String args[]) { final int count = 100000; for (int numThreads = 1; numThreads <= 32; numThreads++) { final int numRuns = 1; for (int t=1; t <= numRuns; t++) { final int curRun = t; System.out.println("Spawning " + numThreads + " threads"); final Thread threads[] = new Thread[numThreads]; for (int i = 0; i < threads.length; i++) { Runnable thread = new Runnable() { public void run() { for (long l = 0; l < 100000; l++) { final long start = System.nanoTime(); if (value == 12345678) { System.out.println("Wow!"); } final long end = System.nanoTime(); final long time = end - start; value += time; if (time < 0) { System.out.println( "Backwards: " + "start=" + start + " " + "end=" + end + " " + "time= " + time ); got_backward_time = true; } } } }; threads[i] = new Thread(thread, "Thread" + i); } for (int i = 0; i < threads.length; i++) { threads[i].start(); } for (int i = 0; i < threads.length; i++) { try { threads[i].join(); } catch (InterruptedException e) { continue; } } } } if (got_backward_time) { System.exit(97); } } }