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11 package org.eclipse.swt.tools.internal;
12
13 import org.eclipse.swt.*;
14 import org.eclipse.swt.graphics.*;
15 import org.eclipse.swt.widgets.*;
16 import java.io.*;
17
18
25 public class Sleak {
26 Display display;
27 Shell shell;
28 List list;
29 Canvas canvas;
30 Button start, stop, check;
31 Text text;
32 Label label;
33
34 Object  [] oldObjects = new Object [0];
35 Error [] oldErrors = new Error [0];
36 Object [] objects = new Object [0];
37 Error [] errors = new Error [0];
38
39 public static void main (String [] args) {
40 DeviceData data = new DeviceData();
41 data.tracking = true;
42 Display display = new Display (data);
43 Sleak sleak = new Sleak ();
44 sleak.open ();
45
46
58 while (!sleak.shell.isDisposed ()) {
59 if (!display.readAndDispatch ()) display.sleep ();
60 }
61 display.dispose ();
62 }
63
64 void open () {
65 display = Display.getCurrent ();
66 shell = new Shell (display);
67 shell.setText ("S-Leak");
68 list = new List (shell, SWT.BORDER | SWT.V_SCROLL);
69 list.addListener (SWT.Selection, new Listener () {
70 public void handleEvent (Event event) {
71 refreshObject ();
72 }
73 });
74 text = new Text (shell, SWT.BORDER | SWT.H_SCROLL | SWT.V_SCROLL);
75 canvas = new Canvas (shell, SWT.BORDER);
76 canvas.addListener (SWT.Paint, new Listener () {
77 public void handleEvent (Event event) {
78 paintCanvas (event);
79 }
80 });
81 check = new Button (shell, SWT.CHECK);
82 check.setText ("Stack");
83 check.addListener (SWT.Selection, new Listener () {
84 public void handleEvent (Event e) {
85 toggleStackTrace ();
86 }
87 });
88 start = new Button (shell, SWT.PUSH);
89 start.setText ("Snap");
90 start.addListener (SWT.Selection, new Listener () {
91 public void handleEvent (Event event) {
92 refreshAll ();
93 }
94 });
95 stop = new Button (shell, SWT.PUSH);
96 stop.setText ("Diff");
97 stop.addListener (SWT.Selection, new Listener () {
98 public void handleEvent (Event event) {
99 refreshDifference ();
100 }
101 });
102 label = new Label (shell, SWT.BORDER);
103 label.setText ("0 object(s)");
104 shell.addListener (SWT.Resize, new Listener () {
105 public void handleEvent (Event e) {
106 layout ();
107 }
108 });
109 check.setSelection (false);
110 text.setVisible (false);
111 Point size = shell.getSize ();
112 shell.setSize (size.x / 2, size.y / 2);
113 shell.open ();
114 }
115
116 void refreshLabel () {
117 int colors = 0, cursors = 0, fonts = 0, gcs = 0, images = 0, regions = 0;
118 for (int i=0; i<objects.length; i++) {
119 Object object = objects [i];
120 if (object instanceof Color) colors++;
121 if (object instanceof Cursor) cursors++;
122 if (object instanceof Font) fonts++;
123 if (object instanceof GC) gcs++;
124 if (object instanceof Image) images++;
125 if (object instanceof Region) regions++;
126 }
127 String string = "";
128 if (colors != 0) string += colors + " Color(s)\n";
129 if (cursors != 0) string += cursors + " Cursor(s)\n";
130 if (fonts != 0) string += fonts + " Font(s)\n";
131 if (gcs != 0) string += gcs + " GC(s)\n";
132 if (images != 0) string += images + " Image(s)\n";
133 if (regions != 0) string += regions + " Region(s)\n";
134 if (string.length () != 0) {
135 string = string.substring (0, string.length () - 1);
136 }
137 label.setText (string);
138 }
139
140 void refreshDifference () {
141 DeviceData info = display.getDeviceData ();
142 if (!info.tracking) {
143 MessageBox dialog = new MessageBox (shell, SWT.ICON_WARNING | SWT.OK);
144 dialog.setText (shell.getText ());
145 dialog.setMessage ("Warning: Device is not tracking resource allocation");
146 dialog.open ();
147 }
148 Object [] newObjects = info.objects;
149 Error [] newErrors = info.errors;
150 Object [] diffObjects = new Object [newObjects.length];
151 Error [] diffErrors = new Error [newErrors.length];
152 int count = 0;
153 for (int i=0; i<newObjects.length; i++) {
154 int index = 0;
155 while (index < oldObjects.length) {
156 if (newObjects [i] == oldObjects [index]) break;
157 index++;
158 }
159 if (index == oldObjects.length) {
160 diffObjects [count] = newObjects [i];
161 diffErrors [count] = newErrors [i];
162 count++;
163 }
164 }
165 objects = new Object [count];
166 errors = new Error [count];
167 System.arraycopy (diffObjects, 0, objects, 0, count);
168 System.arraycopy (diffErrors, 0, errors, 0, count);
169 list.removeAll ();
170 text.setText ("");
171 canvas.redraw ();
172 for (int i=0; i<objects.length; i++) {
173 list.add (objectName (objects [i]));
174 }
175 refreshLabel ();
176 layout ();
177 }
178
179 String objectName (Object object) {
180 String string = object.toString ();
181 int index = string.lastIndexOf ('.');
182 if (index == -1) return string;
183 return string.substring (index + 1, string.length ());
184 }
185
186 void toggleStackTrace () {
187 refreshObject ();
188 layout ();
189 }
190
191 void paintCanvas (Event event) {
192 canvas.setCursor (null);
193 int index = list.getSelectionIndex ();
194 if (index == -1) return;
195 GC gc = event.gc;
196 Object object = objects [index];
197 if (object instanceof Color) {
198 if (((Color)object).isDisposed ()) return;
199 gc.setBackground ((Color) object);
200 gc.fillRectangle (canvas.getClientArea());
201 return;
202 }
203 if (object instanceof Cursor) {
204 if (((Cursor)object).isDisposed ()) return;
205 canvas.setCursor ((Cursor) object);
206 return;
207 }
208 if (object instanceof Font) {
209 if (((Font)object).isDisposed ()) return;
210 gc.setFont ((Font) object);
211 FontData [] array = gc.getFont ().getFontData ();
212 String string = "";
213 String lf = text.getLineDelimiter ();
214 for (int i=0; i<array.length; i++) {
215 FontData data = array [i];
216 String style = "NORMAL";
217 int bits = data.getStyle ();
218 if (bits != 0) {
219 if ((bits & SWT.BOLD) != 0) style = "BOLD ";
220 if ((bits & SWT.ITALIC) != 0) style += "ITALIC";
221 }
222 string += data.getName () + " " + data.getHeight () + " " + style + lf;
223 }
224 gc.drawString (string, 0, 0);
225 return;
226 }
227 if (object instanceof Image) {
232 if (((Image)object).isDisposed ()) return;
233 gc.drawImage ((Image) object, 0, 0);
234 return;
235 }
236 if (object instanceof Region) {
237 if (((Region)object).isDisposed ()) return;
238 String string = ((Region)object).getBounds().toString();
239 gc.drawString (string, 0, 0);
240 return;
241 }
242 }
243
244 void refreshObject () {
245 int index = list.getSelectionIndex ();
246 if (index == -1) return;
247 if (check.getSelection ()) {
248 ByteArrayOutputStream stream = new ByteArrayOutputStream ();
249 PrintStream s = new PrintStream (stream);
250 errors [index].printStackTrace (s);
251 text.setText (stream.toString ());
252 text.setVisible (true);
253 canvas.setVisible (false);
254 } else {
255 canvas.setVisible (true);
256 text.setVisible (false);
257 canvas.redraw ();
258 }
259 }
260
261 void refreshAll () {
262 oldObjects = new Object [0];
263 oldErrors = new Error [0];
264 refreshDifference ();
265 oldObjects = objects;
266 oldErrors = errors;
267 }
268
269 void layout () {
270 Rectangle rect = shell.getClientArea ();
271 int width = 0;
272 String [] items = list.getItems ();
273 GC gc = new GC (list);
274 for (int i=0; i<objects.length; i++) {
275 width = Math.max (width, gc.stringExtent (items [i]).x);
276 }
277 gc.dispose ();
278 Point size1 = start.computeSize (SWT.DEFAULT, SWT.DEFAULT);
279 Point size2 = stop.computeSize (SWT.DEFAULT, SWT.DEFAULT);
280 Point size3 = check.computeSize (SWT.DEFAULT, SWT.DEFAULT);
281 Point size4 = label.computeSize (SWT.DEFAULT, SWT.DEFAULT);
282 width = Math.max (size1.x, Math.max (size2.x, Math.max (size3.x, width)));
283 width = Math.max (64, Math.max (size4.x, list.computeSize (width, SWT.DEFAULT).x));
284 start.setBounds (0, 0, width, size1.y);
285 stop.setBounds (0, size1.y, width, size2.y);
286 check.setBounds (0, size1.y + size2.y, width, size3.y);
287 label.setBounds (0, rect.height - size4.y, width, size4.y);
288 int height = size1.y + size2.y + size3.y;
289 list.setBounds (0, height, width, rect.height - height - size4.y);
290 text.setBounds (width, 0, rect.width - width, rect.height);
291 canvas.setBounds (width, 0, rect.width - width, rect.height);
292 }
293
294 }
295 |
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