1 /*
2 * Copyright (c) 2008, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
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. Oracle designates this
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
96 public void set(File file, OutputStream os) {
97 TempFileDeletionHook.set(file, os);
98 }
99
100 public void remove(File file) {
101 TempFileDeletionHook.remove(file);
102 }
103
104 /**
105 * Helper class for cleanup of temp files created while processing fonts.
106 * Note that this only applies to createFont() from an InputStream object.
107 */
108 private static class TempFileDeletionHook {
109 private static HashMap<File, OutputStream> files = new HashMap<>();
110
111 private static Thread t = null;
112 static void init() {
113 if (t == null) {
114 // Add a shutdown hook to remove the temp file.
115 java.security.AccessController.doPrivileged(
116 new java.security.PrivilegedAction() {
117 public Object run() {
118 /* The thread must be a member of a thread group
119 * which will not get GCed before VM exit.
120 * Make its parent the top-level thread group.
121 */
122 ThreadGroup tg =
123 Thread.currentThread().getThreadGroup();
124 for (ThreadGroup tgn = tg;
125 tgn != null;
126 tg = tgn, tgn = tg.getParent());
127 t = new Thread(tg, new Runnable() {
128 public void run() {
129 runHooks();
130 }
131 });
132 t.setContextClassLoader(null);
133 Runtime.getRuntime().addShutdownHook(t);
134 return null;
135 }
136 });
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1 /*
2 * Copyright (c) 2008, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
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. Oracle designates this
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
96 public void set(File file, OutputStream os) {
97 TempFileDeletionHook.set(file, os);
98 }
99
100 public void remove(File file) {
101 TempFileDeletionHook.remove(file);
102 }
103
104 /**
105 * Helper class for cleanup of temp files created while processing fonts.
106 * Note that this only applies to createFont() from an InputStream object.
107 */
108 private static class TempFileDeletionHook {
109 private static HashMap<File, OutputStream> files = new HashMap<>();
110
111 private static Thread t = null;
112 static void init() {
113 if (t == null) {
114 // Add a shutdown hook to remove the temp file.
115 java.security.AccessController.doPrivileged(
116 new java.security.PrivilegedAction<Object>() {
117 public Object run() {
118 /* The thread must be a member of a thread group
119 * which will not get GCed before VM exit.
120 * Make its parent the top-level thread group.
121 */
122 ThreadGroup tg =
123 Thread.currentThread().getThreadGroup();
124 for (ThreadGroup tgn = tg;
125 tgn != null;
126 tg = tgn, tgn = tg.getParent());
127 t = new Thread(tg, new Runnable() {
128 public void run() {
129 runHooks();
130 }
131 });
132 t.setContextClassLoader(null);
133 Runtime.getRuntime().addShutdownHook(t);
134 return null;
135 }
136 });
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