11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 package jdk.internal.foreign.abi;
26 
27 import java.lang.foreign.MemorySegment;
28 import java.lang.foreign.Arena;
29 
30 import jdk.internal.foreign.MemorySessionImpl;

31 
32 public final class UpcallStubs {
33 
34     private UpcallStubs() {
35     }
36 
37     private static void freeUpcallStub(long stubAddress) {
38         if (!freeUpcallStub0(stubAddress)) {
39             throw new IllegalStateException("Not a stub address: " + stubAddress);
40         }
41     }
42 
43     // natives
44 
45     // returns true if the stub was found (and freed)
46     private static native boolean freeUpcallStub0(long addr);
47 
48     private static native void registerNatives();
49     static {
50         registerNatives();
51     }
52 
53     static MemorySegment makeUpcall(long entry, Arena arena) {
54         MemorySessionImpl.toMemorySession(arena).addOrCleanupIfFail(new MemorySessionImpl.ResourceList.ResourceCleanup() {
55             @Override
56             public void cleanup() {
57                 freeUpcallStub(entry);
58             }
59         });

11  * This code is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14  * version 2 for more details (a copy is included in the LICENSE file that
15  * accompanied this code).
16  *
17  * You should have received a copy of the GNU General Public License version
18  * 2 along with this work; if not, write to the Free Software Foundation,
19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20  *
21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22  * or visit www.oracle.com if you need additional information or have any
23  * questions.
24  */
25 package jdk.internal.foreign.abi;
26 
27 import java.lang.foreign.MemorySegment;
28 import java.lang.foreign.Arena;
29 
30 import jdk.internal.foreign.MemorySessionImpl;
31 import jdk.internal.foreign.Utils;
32 
33 public final class UpcallStubs {
34 
35     private UpcallStubs() {
36     }
37 
38     private static void freeUpcallStub(long stubAddress) {
39         if (!freeUpcallStub0(stubAddress)) {
40             throw new IllegalStateException("Not a stub address: " + Utils.toHexString(stubAddress));
41         }
42     }
43 
44     // natives
45 
46     // returns true if the stub was found (and freed)
47     private static native boolean freeUpcallStub0(long addr);
48 
49     private static native void registerNatives();
50     static {
51         registerNatives();
52     }
53 
54     static MemorySegment makeUpcall(long entry, Arena arena) {
55         MemorySessionImpl.toMemorySession(arena).addOrCleanupIfFail(new MemorySessionImpl.ResourceList.ResourceCleanup() {
56             @Override
57             public void cleanup() {
58                 freeUpcallStub(entry);
59             }
60         });