TemporaryBuffer.java revision 54b6cfa9a9e5b861a9930af873580d6dc20f773c 
1/*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.graphics;
18
19import com.android.internal.util.ArrayUtils;
20
21/* package */ class TemporaryBuffer
22{
23    /* package */ static char[] obtain(int len) {
24        char[] buf;
25
26        synchronized (TemporaryBuffer.class) {
27            buf = sTemp;
28            sTemp = null;
29        }
30
31        if (buf == null || buf.length < len)
32            buf = new char[ArrayUtils.idealCharArraySize(len)];
33
34        return buf;
35    }
36
37    /* package */ static void recycle(char[] temp) {
38        if (temp.length > 1000)
39            return;
40
41        synchronized (TemporaryBuffer.class) {
42            sTemp = temp;
43        }
44    }
45
46    private static char[] sTemp = null;
47}
48