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.hotspot;
24
25 import java.lang.reflect.Field;
26
27 import jdk.internal.misc.Unsafe;
28
29 /**
30 * Package private access to the {@link Unsafe} capability.
31 */
32 class UnsafeAccess {
33
34 static final Unsafe UNSAFE = initUnsafe();
35
36 private static Unsafe initUnsafe() {
37 try {
38 // Fast path when we are trusted.
39 return Unsafe.getUnsafe();
40 } catch (SecurityException se) {
41 // Slow path when we are not trusted.
42 try {
43 Field theUnsafe = Unsafe.class.getDeclaredField("theUnsafe");
44 theUnsafe.setAccessible(true);
45 return (Unsafe) theUnsafe.get(Unsafe.class);
46 } catch (Exception e) {
47 throw new RuntimeException("exception while trying to get Unsafe", e);
48 }
49 }
50 }
51 }
|
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.hotspot;
24
25 import jdk.internal.misc.Unsafe;
26
27 /**
28 * Package private access to the {@link Unsafe} capability.
29 */
30 class UnsafeAccess {
31
32 static final Unsafe UNSAFE = Unsafe.getUnsafe();
33 }
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