8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test
26 * @bug 6724218
27 * @summary Fix raise_LCA_above_marks() early termination
28 * @run main/othervm -Xbatch -XX:CompileCommand=exclude,Test.update Test
29 */
30
31 public class Test {
32 Test next = null;
33 Object value = null;
34
35 static boolean _closed = false;
36 static int size = 0;
37 static Test list = null;
38 static int cache_size = 0;
39 static Test cache = null;
40
41 Object get(int i) {
42 Test t = list;
43 list = t.next;
44 size -= 1;
45 Object o = t.value;
46 if (i > 0) {
47 t.next = cache;
48 t.value = null;
49 cache = t;
50 cache_size = +1;
51 }
52 return o;
53 }
54
55 void update() {
56 // Exclude compilation of this one.
57 if (size == 0) {
58 Test t;
59 if (cache_size > 0) {
60 t = cache;
61 cache = t.next;
62 cache_size = -1;
63 } else {
64 t = new Test();
65 }
66 t.value = new Object();
67 t.next = list;
68 list = t;
69 size += 1;
70 }
71 }
72
73 synchronized Object test(int i) {
74 while (true) {
75 if (_closed) {
76 return null;
77 } else if (size > 0) {
78 return get(i);
79 }
80 update();
81 }
82 }
83
84 public static void main(String argv[]) throws Exception {
85 Test t = new Test();
86 int lim = 500000;
87 Object o;
88 for (int j = 0; j < lim; j++) {
89 o = t.test(j&1);
90 if (o == null) {
91 throw new Exception("*** Failed on iteration " + j);
92 }
93 if ((j&1) == 0) {
94 t.update();
95 }
96 }
97 }
98 }
|
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test
26 * @bug 6724218
27 * @summary Fix raise_LCA_above_marks() early termination
28 *
29 * @run main/othervm -Xbatch
30 * -XX:CompileCommand=exclude,compiler.c2.Test6724218::update
31 * compiler.c2.Test6724218
32 */
33
34 package compiler.c2;
35
36 public class Test6724218 {
37 Test6724218 next = null;
38 Object value = null;
39
40 static boolean _closed = false;
41 static int size = 0;
42 static Test6724218 list = null;
43 static int cache_size = 0;
44 static Test6724218 cache = null;
45
46 Object get(int i) {
47 Test6724218 t = list;
48 list = t.next;
49 size -= 1;
50 Object o = t.value;
51 if (i > 0) {
52 t.next = cache;
53 t.value = null;
54 cache = t;
55 cache_size = +1;
56 }
57 return o;
58 }
59
60 void update() {
61 // Exclude compilation of this one.
62 if (size == 0) {
63 Test6724218 t;
64 if (cache_size > 0) {
65 t = cache;
66 cache = t.next;
67 cache_size = -1;
68 } else {
69 t = new Test6724218();
70 }
71 t.value = new Object();
72 t.next = list;
73 list = t;
74 size += 1;
75 }
76 }
77
78 synchronized Object test(int i) {
79 while (true) {
80 if (_closed) {
81 return null;
82 } else if (size > 0) {
83 return get(i);
84 }
85 update();
86 }
87 }
88
89 public static void main(String argv[]) throws Exception {
90 Test6724218 t = new Test6724218();
91 int lim = 500000;
92 Object o;
93 for (int j = 0; j < lim; j++) {
94 o = t.test(j&1);
95 if (o == null) {
96 throw new Exception("*** Failed on iteration " + j);
97 }
98 if ((j&1) == 0) {
99 t.update();
100 }
101 }
102 }
103 }
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