/*
* Copyright ( c ) 2008 , 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
* @ bug 6724218
* @ summary Fix raise_LCA_above_marks ( ) early termination
*
* @ run main / othervm - Xbatch
* - XX : CompileCommand = exclude , compiler . c2 . Test6724218 : : update
* compiler . c2 . Test6724218
*/
package compiler.c2;
public class Test6724218 {
Test6724218 next = null ;
Object value = null ;
static boolean _closed = false ;
static int size = 0 ;
static Test6724218 list = null ;
static int cache_size = 0 ;
static Test6724218 cache = null ;
Object get(int i) {
Test6724218 t = list;
list = t.next;
size -= 1 ;
Object o = t.value;
if (i > 0 ) {
t.next = cache;
t.value = null ;
cache = t;
cache_size = +1 ;
}
return o;
}
void update() {
// Exclude compilation of this one.
if (size == 0 ) {
Test6724218 t;
if (cache_size > 0 ) {
t = cache;
cache = t.next;
cache_size = -1 ;
} else {
t = new Test6724218();
}
t.value = new Object();
t.next = list;
list = t;
size += 1 ;
}
}
synchronized Object test(int i) {
while (true ) {
if (_closed) {
return null ;
} else if (size > 0 ) {
return get(i);
}
update();
}
}
public static void main(String argv[]) throws Exception {
Test6724218 t = new Test6724218();
int lim = 500000 ;
Object o;
for (int j = 0 ; j < lim; j++) {
o = t.test(j&1 );
if (o == null ) {
throw new Exception("*** Failed on iteration " + j);
}
if ((j&1 ) == 0 ) {
t.update();
}
}
}
}
Messung V0.5 in Prozent C=98 H=88 G=93
¤ Dauer der Verarbeitung: 0.4 Sekunden
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