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annotate src/thread/riscos/SDL_systhread.c @ 1029:f87f87efd45a

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Date: Mon, 17 Jan 2005 20:54:50 +0200 From: Ville [snip] Subject: [PATCH] SDL/DirectFB: remove Matrox CRTC2 flicker filter Hi, This patch removes the flicker filter option from the DirectFB backend's Matrox CRTC2 code in SDL. I will be removing the option from DirectFB (because it doesn't actually work) and that would cause the SDL code to fail without this fix. I was going to send this to some SDL list directly but libsdl.org is down so I'm not sure what if any lists there are. Thomas Jarosch (the guy who wrote the code) said you would accept SDL patches. Let me know if I should send this somewhere else. -- Ville Syrj�l� syrjala _at sci.fi http://www.sci.fi/~syrjala/
author Ryan C. Gordon <icculus@icculus.org>
date Mon, 17 Jan 2005 19:38:28 +0000
parents d74fbf56f2f6
children c9b51268668f
rev   line source
955
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Sam Lantinga <slouken@libsdl.org>
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1 /*
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2 SDL - Simple DirectMedia Layer
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Sam Lantinga <slouken@libsdl.org>
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3 Copyright (C) 1997-2004 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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Sam Lantinga <slouken@libsdl.org>
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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
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
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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 /* RISC OS version based on pthreads linux source */
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24
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25 #ifdef SAVE_RCSID
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26 static char rcsid =
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27 "@(#) $Id$";
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28 #endif
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29
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30 #include "SDL_error.h"
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31 #include "SDL_thread.h"
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32 #include "SDL_systhread.h"
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33
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34 #ifdef DISABLE_THREADS
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35
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36 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
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37 {
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38 SDL_SetError("Threads have not been compiled into this version of the library");
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39 return(-1);
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40 }
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41
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42 void SDL_SYS_SetupThread(void)
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43 {
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44 return;
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45 }
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46
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47 Uint32 SDL_ThreadID(void)
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48 {
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49 return(0);
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50 }
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51
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52 void SDL_SYS_WaitThread(SDL_Thread *thread)
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53 {
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54 return;
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55 }
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56
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57 void SDL_SYS_KillThread(SDL_Thread *thread)
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58 {
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59 return;
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60 }
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61
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62 #else
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63
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64 #include <signal.h>
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65
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66 /* List of signals to mask in the subthreads */
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67 static int sig_list[] = {
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68 SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGCHLD, SIGWINCH,
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69 SIGVTALRM, SIGPROF, 0
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70 };
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71
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72 #include <pthread.h>
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73
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74 int riscos_using_threads = 0;
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75 Uint32 riscos_main_thread = 0; /* Thread running events */
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76
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77 static void *RunThread(void *data)
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78 {
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79 SDL_RunThread(data);
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80 pthread_exit((void*)0);
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81 return((void *)0); /* Prevent compiler warning */
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82 }
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83
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84 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
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85 {
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86 pthread_attr_t type;
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87
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88 /* Set the thread attributes */
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89 if ( pthread_attr_init(&type) != 0 ) {
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90 SDL_SetError("Couldn't initialize pthread attributes");
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91 return(-1);
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92 }
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93 pthread_attr_setdetachstate(&type, PTHREAD_CREATE_JOINABLE);
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94
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95 /* Create the thread and go! */
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96 if ( pthread_create(&thread->handle, &type, RunThread, args) != 0 ) {
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97 SDL_SetError("Not enough resources to create thread");
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98 return(-1);
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99 }
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100
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101 if (riscos_using_threads == 0)
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102 {
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103 riscos_using_threads = 1;
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104 riscos_main_thread = SDL_ThreadID();
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105 }
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106
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107 return(0);
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108 }
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109
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110 void SDL_SYS_SetupThread(void)
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111 {
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112 int i;
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113 sigset_t mask;
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114
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115 /* Mask asynchronous signals for this thread */
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116 sigemptyset(&mask);
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117 for ( i=0; sig_list[i]; ++i ) {
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118 sigaddset(&mask, sig_list[i]);
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119 }
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120 pthread_sigmask(SIG_BLOCK, &mask, 0);
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121
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122 #ifdef PTHREAD_CANCEL_ASYNCHRONOUS
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123 /* Allow ourselves to be asynchronously cancelled */
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124 { int oldstate;
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125 pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &oldstate);
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126 }
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127 #endif
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128 }
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129
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130 Uint32 SDL_ThreadID(void)
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131 {
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132 return((Uint32)pthread_self());
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133 }
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134
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135 void SDL_SYS_WaitThread(SDL_Thread *thread)
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136 {
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137 pthread_join(thread->handle, 0);
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138 }
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139
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140 void SDL_SYS_KillThread(SDL_Thread *thread)
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141 {
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142 #ifdef PTHREAD_CANCEL_ASYNCHRONOUS
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143 pthread_cancel(thread->handle);
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144 #else
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145 pthread_kill(thread->handle, SIGKILL);
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146 #endif
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147 }
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148
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149 #endif