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 package java.io;
26
27 import java.util.*;
28 import java.io.File;
29
30 /**
31 * This class holds a set of filenames to be deleted on VM exit through a shutdown hook.
32 * A set is used both to prevent double-insertion of the same file as well as offer
33 * quick removal.
34 */
35
36 class DeleteOnExitHook {
37 private static LinkedHashSet<String> files = new LinkedHashSet<>();
38 static {
39 // DeleteOnExitHook must be the last shutdown hook to be invoked.
40 // Application shutdown hooks may add the first file to the
41 // delete on exit list and cause the DeleteOnExitHook to be
42 // registered during shutdown in progress. So set the
43 // registerShutdownInProgress parameter to true.
44 sun.misc.SharedSecrets.getJavaLangAccess()
45 .registerShutdownHook(2 /* Shutdown hook invocation order */,
46 true /* register even if shutdown in progress */,
47 new Runnable() {
48 public void run() {
49 runHooks();
50 }
51 }
52 );
53 }
54
55 private DeleteOnExitHook() {}
56
57 static synchronized void add(String file) {
58 if(files == null) {
59 // DeleteOnExitHook is running. Too late to add a file
60 throw new IllegalStateException("Shutdown in progress");
61 }
62
63 files.add(file);
64 }
|
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 package java.io;
26
27 import java.util.*;
28 import java.io.File;
29 import jdk.internal.misc.SharedSecrets;
30
31 /**
32 * This class holds a set of filenames to be deleted on VM exit through a shutdown hook.
33 * A set is used both to prevent double-insertion of the same file as well as offer
34 * quick removal.
35 */
36
37 class DeleteOnExitHook {
38 private static LinkedHashSet<String> files = new LinkedHashSet<>();
39 static {
40 // DeleteOnExitHook must be the last shutdown hook to be invoked.
41 // Application shutdown hooks may add the first file to the
42 // delete on exit list and cause the DeleteOnExitHook to be
43 // registered during shutdown in progress. So set the
44 // registerShutdownInProgress parameter to true.
45 SharedSecrets.getJavaLangAccess()
46 .registerShutdownHook(2 /* Shutdown hook invocation order */,
47 true /* register even if shutdown in progress */,
48 new Runnable() {
49 public void run() {
50 runHooks();
51 }
52 }
53 );
54 }
55
56 private DeleteOnExitHook() {}
57
58 static synchronized void add(String file) {
59 if(files == null) {
60 // DeleteOnExitHook is running. Too late to add a file
61 throw new IllegalStateException("Shutdown in progress");
62 }
63
64 files.add(file);
65 }
|