5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
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 package jdk.vm.ci.meta;
24
25 import java.util.*;
26
27 // JaCoCo Exclude
28
29 /**
30 * Marker interface for location identities. A different location identity of two memory accesses
31 * guarantees that the two accesses do not interfere.
32 *
33 * Clients of {@link LocationIdentity} must use {@link #equals(Object)}, not {@code ==}, when
34 * comparing two {@link LocationIdentity} values for equality. Likewise, they must not use
35 * {@link IdentityHashMap}s with {@link LocationIdentity} values as keys.
36 */
37 public abstract class LocationIdentity {
38
39 private static final class AnyLocationIdentity extends LocationIdentity {
40 @Override
41 public boolean isImmutable() {
42 return false;
43 }
44
45 @Override
|
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
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 package jdk.vm.ci.meta;
24
25 import java.util.IdentityHashMap;
26
27 // JaCoCo Exclude
28
29 /**
30 * Marker interface for location identities. A different location identity of two memory accesses
31 * guarantees that the two accesses do not interfere.
32 *
33 * Clients of {@link LocationIdentity} must use {@link #equals(Object)}, not {@code ==}, when
34 * comparing two {@link LocationIdentity} values for equality. Likewise, they must not use
35 * {@link IdentityHashMap}s with {@link LocationIdentity} values as keys.
36 */
37 public abstract class LocationIdentity {
38
39 private static final class AnyLocationIdentity extends LocationIdentity {
40 @Override
41 public boolean isImmutable() {
42 return false;
43 }
44
45 @Override
|