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annotate mde/scheduler/InitFunctions.d @ 27:0aa621b3e070

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Some GUI work, plus a small fix in the paths module. Implemented GUI code to load windows from file with a basic widget and draw. Fixed a bug in mde.resource.paths.mdeDirectory.makeMTReader when called with readOrder == PRIORITY.HIGH_ONLY. committer: Diggory Hardy <diggory.hardy@gmail.com>
author Diggory Hardy <diggory.hardy@gmail.com>
date Fri, 04 Apr 2008 17:07:38 +0100
parents 611f7b9063c6
children f985c28c0ec9
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1 /* LICENSE BLOCK
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2 Part of mde: a Modular D game-oriented Engine
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3 Copyright © 2007-2008 Diggory Hardy
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4
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5 This program is free software: you can redistribute it and/or modify it under the terms
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6 of the GNU General Public License as published by the Free Software Foundation, either
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7 version 2 of the License, or (at your option) any later version.
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8
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9 This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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10 without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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11 See the GNU General Public License for more details.
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12
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13 You should have received a copy of the GNU General Public License
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14 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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16 /** This module is responsible for calling all init functions.
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17 *
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18 * It is also responsible for setting up all scheduled functions for now.
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20 * Idea: change import direction so this module adds all init functions. All init functions are
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21 * wrapped in another function before being run in a thread (i.e. run indirectly). Functions fail
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22 * either by throwing an exception or by returning a boolean. Functions may take parameters, e.g.
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23 * "out cleanupFunc[]". */
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24 module mde.scheduler.InitFunctions;
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26 static import mde.gl;
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28 import tango.util.log.Log : Log, Logger;
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29 static this() {
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30 logger = Log.getLogger ("mde.scheduler.InitFunctions");
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31 }
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33 /** Should be called by an init function when a failure occurs. */
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34 void setInitFailure () {
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35 initFailure = true;
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36 }
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37
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38 package:
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39
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40 /** Represents all functions to be called for a particular init stage. */
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41 struct InitStage
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42 {
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43 alias void function() InitFunction; /// Alias
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44
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45 /** Add a function to be called during this init stage.
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46 *
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47 * Called in order added when not threaded (reverse order for cleanup).
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48 *
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49 * Exceptions should never be thrown, since each function may run as a thread, and catching
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50 * thread exceptions is not guaranteed to work. Log a message, call setFailure() and return
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51 * instead. */
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52 void addFunc (InitFunction f) {
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53 funcs ~= f;
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54 }
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56 InitFunction[] funcs = [];
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57 }
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58
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59 InitStage init; // all functions called during init (all should be thread-safe)
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60 InitStage cleanup; // all functions called during cleanup (all should be thread-safe)
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61
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62 bool initFailure = false; // set on failure (throwing through threads isn't a good idea)
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64 private:
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65 Logger logger;
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66 const FAIL_MSG = "Init function failed: ";
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67 // Template to call function, catching exceptions:
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68 void initInput(alias Func) () {
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69 try {
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70 Func();
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71 } catch (Exception e) {
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72 logger.fatal (FAIL_MSG ~ e.msg);
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73 initFailure = true;
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74 }
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75 }