annotate src/thread/dc/SDL_sysmutex.c @ 1133:609c060fd2a2

The MacOSX Carbon/Cocoa/X11 all in one library patch. Relevant emails: To: SDL Developers <sdl@libsdl.org> From: =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb@algonet.se> Date: Mon, 30 May 2005 23:29:04 +0200 Subject: [SDL] Mac OS X Video Drivers [patch] I've updated/added the Carbon and X11 video drivers to the Mac OS X port of SDL 1.2 (the CVS version), and made the Cocoa driver and runtime *optional*. The default is still Cocoa, and the "Quartz" driver. But you can now also use "toolbox" for Carbon, and "x11" for running with Apple's (or other) X11 server: export SDL_VIDEODRIVER=x11 export SDL_VIDEO_GL_DRIVER=/usr/X11R6/lib/libGL.dylib It also checks if the frameworks are available, by a: #include <Carbon/Carbon.h> or #import <Cocoa/Cocoa.h> (this should make it configure on plain Darwin as well?) Here are the new configure targets: --enable-video-cocoa use Cocoa/Quartz video driver default=yes --enable-video-carbon use Carbon/QuickDraw video driver default=yes --enable-video-x11 use X11 video driver default=no ./configure --enable-video-cocoa --enable-video-carbon --enable-video-x11 \ --x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib The Carbon version is just an updated version of the old SDL driver for Mac OS 9, and could probably be improved... (but it does work, including the Carbon version of SDLmain) If you disable cocoa, you can run with -framework Carbon only, and the C version of SDL_main.c. And if you disable carbon too, you can still use the X11 version which doesn't require SDLmain. I updated the DrawSprocket version, but did not include it. (no blitters or VRAM GWorlds etc. available on OS X anyway) Besides for Mac OS 9, I don't think there's any use for it ? And note that any performance on Mac OS X equals OpenGL anyway... You can get "fair" software SDL results on captured CG displays, but for decent frame rates you need to be using GL for rendering. Finally, here is the patch itself: http://www.algonet.se/~afb/SDL-12CVS-macvideo.patch --anders PS. It says "video", but as usual it applies to mouse/keyboard too. ------ To: A list for developers using the SDL library <sdl@libsdl.org> From: =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb@algonet.se> Date: Sun, 4 Sep 2005 10:02:15 +0200 Subject: [SDL] Updated Mac patch Updated the previous Mac patch to disable Carbon by default. Also "fixed" the SDL.spec again, so that it builds on Darwin. http://www.algonet.se/~afb/SDL-1.2.9-mac.patch Also applied fine to SDL12 CVS, when I tried it.
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 08 Sep 2005 06:16:14 +0000
parents b8d311d90021
children c9b51268668f
rev   line source
509
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1 /*
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2 SDL - Simple DirectMedia Layer
769
b8d311d90021 Updated copyright information for 2004 (Happy New Year!)
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3 Copyright (C) 1997-2004 Sam Lantinga
509
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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 BERO
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20 bero@geocities.co.jp
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21
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22 based on generic/SDL_sysmutex.c
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23
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24 Sam Lantinga
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25 slouken@libsdl.org
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26 */
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27
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28 #ifdef SAVE_RCSID
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29 static char rcsid =
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30 "@(#) $Id$";
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31 #endif
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32
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33 /* An implementation of mutexes using semaphores */
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34
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35 #include <stdio.h>
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36 #include <stdlib.h>
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37
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38 #include "SDL_error.h"
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39 #include "SDL_thread.h"
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40 #include "SDL_systhread_c.h"
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41
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42 #include <arch/spinlock.h>
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43
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44 struct SDL_mutex {
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45 int recursive;
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46 Uint32 owner;
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47 spinlock_t mutex;
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48 };
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49
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50 /* Create a mutex */
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51 SDL_mutex *SDL_CreateMutex(void)
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52 {
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53 SDL_mutex *mutex;
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54
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55 /* Allocate mutex memory */
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56 mutex = (SDL_mutex *)malloc(sizeof(*mutex));
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57 if ( mutex ) {
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58 spinlock_init(&mutex->mutex);
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59 mutex->recursive = 0;
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60 mutex->owner = 0;
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61 } else {
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62 SDL_OutOfMemory();
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63 }
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64 return mutex;
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65 }
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66
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67 /* Free the mutex */
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68 void SDL_DestroyMutex(SDL_mutex *mutex)
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69 {
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70 if ( mutex ) {
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71 free(mutex);
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72 }
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73 }
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74
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75 /* Lock the semaphore */
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76 int SDL_mutexP(SDL_mutex *mutex)
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77 {
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78 #ifdef DISABLE_THREADS
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79 return 0;
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80 #else
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81 Uint32 this_thread;
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82
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83 if ( mutex == NULL ) {
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84 SDL_SetError("Passed a NULL mutex");
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85 return -1;
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86 }
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87
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88 this_thread = SDL_ThreadID();
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89 if ( mutex->owner == this_thread ) {
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90 ++mutex->recursive;
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91 } else {
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92 /* The order of operations is important.
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93 We set the locking thread id after we obtain the lock
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94 so unlocks from other threads will fail.
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95 */
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96 spinlock_lock(&mutex->mutex);
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97 mutex->owner = this_thread;
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98 mutex->recursive = 0;
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99 }
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100
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101 return 0;
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102 #endif /* DISABLE_THREADS */
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103 }
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104
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105 /* Unlock the mutex */
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106 int SDL_mutexV(SDL_mutex *mutex)
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107 {
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108 #ifdef DISABLE_THREADS
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109 return 0;
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110 #else
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111 if ( mutex == NULL ) {
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112 SDL_SetError("Passed a NULL mutex");
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113 return -1;
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114 }
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115
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116 /* If we don't own the mutex, we can't unlock it */
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117 if ( SDL_ThreadID() != mutex->owner ) {
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118 SDL_SetError("mutex not owned by this thread");
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119 return -1;
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120 }
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121
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122 if ( mutex->recursive ) {
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123 --mutex->recursive;
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124 } else {
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125 /* The order of operations is important.
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126 First reset the owner so another thread doesn't lock
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127 the mutex and set the ownership before we reset it,
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128 then release the lock semaphore.
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129 */
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130 mutex->owner = 0;
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131 spinlock_unlock(&mutex->mutex);
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132 }
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133 return 0;
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134 #endif /* DISABLE_THREADS */
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135 }