1 /*
2 * Copyright (c) 2007, 2015, 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
23 * questions.
24 */
25
26 package sun.java2d.marlin;
27
28 import java.security.AccessController;
29 import static sun.java2d.marlin.MarlinUtils.logInfo;
30 import sun.security.action.GetPropertyAction;
31
32 public final class MarlinProperties {
33
34 private MarlinProperties() {
35 // no-op
36 }
37
38 // marlin system properties
39
40 public static boolean isUseThreadLocal() {
41 return getBoolean("sun.java2d.renderer.useThreadLocal", "true");
42 }
43
44 /**
45 * Return the initial pixel size used to define initial arrays
46 * (tile AA chunk, alpha line, buckets)
47 *
48 * @return 64 < initial pixel size < 32768 (2048 by default)
49 */
50 public static int getInitialImageSize() {
51 return getInteger("sun.java2d.renderer.pixelsize", 2048, 64, 32 * 1024);
52 }
53
54 /**
55 * Return the log(2) corresponding to subpixel on x-axis (
56 *
57 * @return 1 (2 subpixels) < initial pixel size < 4 (256 subpixels)
58 * (3 by default ie 8 subpixels)
59 */
60 public static int getSubPixel_Log2_X() {
61 return getInteger("sun.java2d.renderer.subPixel_log2_X", 3, 1, 8);
62 }
63
64 /**
65 * Return the log(2) corresponding to subpixel on y-axis (
66 *
67 * @return 1 (2 subpixels) < initial pixel size < 8 (256 subpixels)
68 * (3 by default ie 8 subpixels)
69 */
70 public static int getSubPixel_Log2_Y() {
71 return getInteger("sun.java2d.renderer.subPixel_log2_Y", 3, 1, 8);
72 }
73
74 /**
75 * Return the log(2) corresponding to the square tile size in pixels
76 *
77 * @return 3 (8x8 pixels) < tile size < 8 (256x256 pixels)
78 * (5 by default ie 32x32 pixels)
79 */
80 public static int getTileSize_Log2() {
81 return getInteger("sun.java2d.renderer.tileSize_log2", 5, 3, 8);
82 }
83
84 /**
85 * Return the log(2) corresponding to the block size in pixels
86 *
87 * @return 3 (8 pixels) < block size < 8 (256 pixels)
88 * (5 by default ie 32 pixels)
89 */
90 public static int getBlockSize_Log2() {
91 return getInteger("sun.java2d.renderer.blockSize_log2", 5, 3, 8);
92 }
93
94 // RLE / blockFlags settings
95
96 public static boolean isForceRLE() {
97 return getBoolean("sun.java2d.renderer.forceRLE", "false");
98 }
99
100 public static boolean isForceNoRLE() {
101 return getBoolean("sun.java2d.renderer.forceNoRLE", "false");
102 }
103
104 public static boolean isUseTileFlags() {
105 return getBoolean("sun.java2d.renderer.useTileFlags", "true");
106 }
107
108 public static boolean isUseTileFlagsWithHeuristics() {
109 return isUseTileFlags()
110 && getBoolean("sun.java2d.renderer.useTileFlags.useHeuristics", "true");
111 }
112
113 public static int getRLEMinWidth() {
114 return getInteger("sun.java2d.renderer.rleMinWidth", 64, 0, Integer.MAX_VALUE);
115 }
116
117 // optimisation parameters
118
119 public static boolean isUseSimplifier() {
120 return getBoolean("sun.java2d.renderer.useSimplifier", "false");
121 }
122
123 // debugging parameters
124
125 public static boolean isDoStats() {
126 return getBoolean("sun.java2d.renderer.doStats", "false");
127 }
128
129 public static boolean isDoMonitors() {
130 return getBoolean("sun.java2d.renderer.doMonitors", "false");
131 }
132
133 public static boolean isDoChecks() {
134 return getBoolean("sun.java2d.renderer.doChecks", "false");
135 }
136
137 // logging parameters
138
139 public static boolean isUseLogger() {
140 return getBoolean("sun.java2d.renderer.useLogger", "false");
141 }
142
143 public static boolean isLogCreateContext() {
144 return getBoolean("sun.java2d.renderer.logCreateContext", "false");
145 }
146
147 public static boolean isLogUnsafeMalloc() {
148 return getBoolean("sun.java2d.renderer.logUnsafeMalloc", "false");
149 }
150
151 // system property utilities
152 static boolean getBoolean(final String key, final String def) {
153 return Boolean.valueOf(AccessController.doPrivileged(
154 new GetPropertyAction(key, def)));
155 }
156
157 static int getInteger(final String key, final int def,
158 final int min, final int max)
159 {
160 final String property = AccessController.doPrivileged(
161 new GetPropertyAction(key));
162
163 int value = def;
164 if (property != null) {
165 try {
166 value = Integer.decode(property);
167 } catch (NumberFormatException e) {
168 logInfo("Invalid integer value for " + key + " = " + property);
169 }
170 }
171
172 // check for invalid values
173 if ((value < min) || (value > max)) {
174 logInfo("Invalid value for " + key + " = " + value
175 + "; expected value in range[" + min + ", " + max + "] !");
176 value = def;
177 }
178 return value;
179 }
180
181 }