8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
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
26 package sun.nio.ch;
27
28
29 // Signalling operations on native threads
30
31 public class NativeThread {
32 private static final long VIRTUAL_THREAD_ID = -1L;
33
34 /**
35 * Returns the id of the current native thread if the platform can signal
36 * native threads, 0 if the platform can not signal native threads, or
37 * -1L if the current thread is a virtual thread.
38 */
39 public static long current() {
40 if (Thread.currentThread().isVirtual()) {
41 return VIRTUAL_THREAD_ID;
42 } else {
43 // no support for signalling threads on Windows
44 return 0;
45 }
46 }
47
48 /**
49 * Signals the given native thread.
50 *
51 * @throws IllegalArgumentException if tid is not a token to a native thread
52 */
53 static void signal(long tid) {
54 throw new UnsupportedOperationException();
55 }
56
57 /**
58 * Returns true the tid is the id of a native thread.
59 */
60 static boolean isNativeThread(long tid) {
61 return false;
62 }
63
64 /**
65 * Returns true if tid is -1L.
66 * @see #current()
67 */
68 static boolean isVirtualThread(long tid) {
69 return (tid == VIRTUAL_THREAD_ID);
70 }
71 }
|
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
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
26 package sun.nio.ch;
27
28 public class NativeThread {
29 private final Thread thread;
30
31 private NativeThread(Thread thread) {
32 this.thread = thread;
33 }
34
35 Thread thread() {
36 return thread;
37 }
38
39 static NativeThread current() {
40 Thread t = Thread.currentThread();
41 if (t.isVirtual()) {
42 return new NativeThread(t);
43 } else {
44 return null;
45 }
46 }
47
48 static NativeThread currentNativeThread() {
49 return null;
50 }
51
52 void signal() {
53 throw new UnsupportedOperationException();
54 }
55
56 static boolean isVirtualThread(NativeThread nt) {
57 return nt != null;
58 }
59
60 static boolean isNativeThread(NativeThread nt) {
61 return false;
62 }
63 }
|