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annotate src/thread/epoc/SDL_sysmutex.cpp @ 641:df178851293b

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Date: 28 Jun 2003 22:42:52 +0100 From: Alan Swanson Subject: Re: [SDL] New XFree 4.3 Video Mode Patch I have a wee amendment that moves the qsort in set_best_resolution to only occur after failing to find an exact match only. This would make absolutely sure we get a user set mode. While I've never had any problems for my normal resolutions (1280x1024, 1024x768, 800x600 & 640,480) while closely examining the output from qsort I've noticed it doesn't seem to sort the modes fully. These is one definite wrong at 1152x768 and a few that just look wrong to me. From a program (attached) I made to examine this more easily. X has sorted its mode list using the same method as ours (plus frequency), and our user modes get inserted without any other movement. On the patch I've made I've also changed cmpmodes to sort on vertical resolution and then horizontal. Ie vertical is now most significant bit.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 28 Jun 2003 21:52:26 +0000
parents e8157fcb3114
children c9b51268668f
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 /*
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24 SDL_sysmutex.cpp
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25
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26 Epoc version by Markus Mertama (w@iki.fi)
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27 */
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28
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29
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30 #ifdef SAVE_RCSID
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31 static char rcsid =
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32 "@(#) $Id$";
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33 #endif
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34
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35 /* Mutex functions using the Win32 API */
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36
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37 //#include <stdio.h>
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38 //#include <stdlib.h>
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39
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40 #include<e32std.h>
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41
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42 #include "SDL_error.h"
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43 #include "SDL_mutex.h"
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44
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45
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46
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47 struct SDL_mutex
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48 {
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49 TInt handle;
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50 };
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51
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52 extern TInt CreateUnique(TInt (*aFunc)(const TDesC& aName, TAny*, TAny*), TAny*, TAny*);
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53
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54 TInt NewMutex(const TDesC& aName, TAny* aPtr1, TAny*)
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55 {
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56 return ((RMutex*)aPtr1)->CreateGlobal(aName);
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57 }
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58
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59 /* Create a mutex */
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60 SDL_mutex *SDL_CreateMutex(void)
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61 {
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62 RMutex rmutex;
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63
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64 TInt status = CreateUnique(NewMutex, &rmutex, NULL);
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65 if(status != KErrNone)
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66 {
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67 SDL_SetError("Couldn't create mutex");
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68 }
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69 SDL_mutex* mutex = new /*(ELeave)*/ SDL_mutex;
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70 mutex->handle = rmutex.Handle();
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71 return(mutex);
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72 }
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73
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74 /* Free the mutex */
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75 void SDL_DestroyMutex(SDL_mutex *mutex)
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76 {
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77 if ( mutex )
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78 {
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79 RMutex rmutex;
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80 rmutex.SetHandle(mutex->handle);
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81 rmutex.Signal();
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82 rmutex.Close();
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83 delete(mutex);
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84 mutex = NULL;
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85 }
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86 }
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87
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88 /* Lock the mutex */
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89 int SDL_mutexP(SDL_mutex *mutex)
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90 {
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91 if ( mutex == NULL ) {
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92 SDL_SetError("Passed a NULL mutex");
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93 return -1;
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94 }
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95 RMutex rmutex;
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96 rmutex.SetHandle(mutex->handle);
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97 rmutex.Wait();
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98 return(0);
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99 }
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100
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101 /* Unlock the mutex */
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102 int SDL_mutexV(SDL_mutex *mutex)
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103 {
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104 if ( mutex == NULL ) {
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105 SDL_SetError("Passed a NULL mutex");
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106 return -1;
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107 }
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108 RMutex rmutex;
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109 rmutex.SetHandle(mutex->handle);
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110 rmutex.Signal();
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111 return(0);
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112 }