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6731826: race condition in UnixPrintServiceLookup

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Reviewed-by: campbell, tdv
This commit is contained in:
Jennifer Godinez 2008-08-19 16:04:06 -07:00
parent 6b68aa3dcb
commit ea4f164aae
2 changed files with 58 additions and 1 deletions
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6
jdk/src/solaris/classes/sun/print/IPPPrintService.java
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@ -1,5 +1,5 @@
/*
* Copyright 2003-2008 Sun Microsystems, Inc. All Rights Reserved.
* Copyright 2003-2007 Sun Microsystems, Inc. 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
@ -1864,4 +1864,8 @@ public class IPPPrintService implements PrintService, SunPrinterJobService {
(obj instanceof IPPPrintService &&
((IPPPrintService)obj).getName().equals(getName())));
}
public int hashCode() {
return this.getClass().hashCode()+getName().hashCode();
}
}

53
jdk/test/javax/print/TestRaceCond.java Normal file
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@ -0,0 +1,53 @@
/*
* Copyright 2008 Sun Microsystems, Inc. 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 6731826
* @summary There should be no RuntimeException.
* @run main TestRaceCond
*/
import javax.print.PrintService;
import javax.print.PrintServiceLookup;
public class TestRaceCond {
public static void main(String argv[]) {
trial();
}
static void trial() {
PrintService pserv1 = PrintServiceLookup.lookupDefaultPrintService();
PrintService[] pservs = PrintServiceLookup.lookupPrintServices(null, null);
PrintService pserv2 = PrintServiceLookup.lookupDefaultPrintService();
if (pserv1.hashCode() != pserv2.hashCode()) {
throw new RuntimeException("Different hashCodes for equal print "
+ "services: " + pserv1.hashCode() + " "
+ pserv2.hashCode());
}
}
}