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annotate src/org/tmatesoft/hg/internal/Lifecycle.java @ 254:a620f0663a37

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Collect tags for a file - improve performance of 'sparse' manifest reads
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 16 Aug 2011 04:03:29 +0200
parents d3ab16739736
children
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1 /*
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2 * Copyright (c) 2011 TMate Software Ltd
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; version 2 of the License.
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7 *
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8 * This program is distributed in the hope that it will be useful,
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
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12 *
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13 * For information on how to redistribute this software under
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14 * the terms of a license other than GNU General Public License
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.internal;
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18
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19 /**
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20 * EXPERIMENTAL.
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21 * Mix-in for RevlogStream.Inspector to get informed about start and end of the iteration
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22 *
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23 * @author Artem Tikhomirov
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24 * @author TMate Software Ltd.
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25 */
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26 @Experimental(reason="Experimenting whether such approach pays off")
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27 public interface Lifecycle {
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28
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29 /**
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30 * @param count approximate number of iterations.
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31 * @param callback callback to communicate with RevlogStream (now to stop iteration only)
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32 * @param token identifier of the process
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33 */
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34 public void start(int count, Callback callback, Object token);
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35
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36 /**
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37 * @param token identifier of the process, identical to the one passed in {@link #start(int, Callback, Object)} of this iteration
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38 */
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39 public void finish(Object token);
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40
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41 /**
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42 * Access to RevlogStream facilities.
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43 */
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44 interface Callback {
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45 void stop();
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46 }
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47
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48 class BasicCallback implements Callback {
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49 private boolean done = false;
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50
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51 public void stop() {
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52 done = true;
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53 }
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54 public boolean isStopped() {
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55 return done;
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56 }
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57 }
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58 }