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annotate src/org/tmatesoft/hg/internal/Lifecycle.java @ 338:3cfa4d908fc9

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Add options to control DataAccessProvider, allow to turn off use of file memory mapping in particular to solve potential sharing violation (os file handle gets released on MappedByteByffer being GC'd, not on FileChannel.close())
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 15 Nov 2011 04:47:03 +0100
parents d3ab16739736
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e39cf474ef94 Experimental support to mix-in start and end events for inspectors. Additionally, Lifecycle may serve as iteration control
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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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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 }