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annotate src/thread/riscos/SDL_systhread.c @ 1388:9a9b87172b4b

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Fixed build dependencies... ugh
author Sam Lantinga <slouken@libsdl.org>
date Mon, 20 Feb 2006 11:29:36 +0000
parents 19418e4422cb
children d910939febfa
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 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 Lesser 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 Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 #include "SDL_thread.h"
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26 #include "../SDL_systhread.h"
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27
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28 #if SDL_THREADS_DISABLED
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29
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30 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
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31 {
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32 SDL_SetError("Threads have not been compiled into this version of the library");
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33 return(-1);
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34 }
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35
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36 void SDL_SYS_SetupThread(void)
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37 {
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38 return;
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39 }
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40
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41 Uint32 SDL_ThreadID(void)
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42 {
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43 return(0);
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44 }
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45
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46 void SDL_SYS_WaitThread(SDL_Thread *thread)
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47 {
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48 return;
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49 }
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50
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51 void SDL_SYS_KillThread(SDL_Thread *thread)
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52 {
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53 return;
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54 }
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55
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56 #else
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57
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58 #include <signal.h>
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59
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60 /* List of signals to mask in the subthreads */
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61 static int sig_list[] = {
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62 SIGHUP, SIGINT, SIGQUIT, SIGPIPE, SIGALRM, SIGTERM, SIGCHLD, SIGWINCH,
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63 SIGVTALRM, SIGPROF, 0
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64 };
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65
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66 #include <pthread.h>
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67
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68 int riscos_using_threads = 0;
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69 Uint32 riscos_main_thread = 0; /* Thread running events */
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70
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71 static void *RunThread(void *data)
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72 {
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73 SDL_RunThread(data);
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74 pthread_exit((void*)0);
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75 return((void *)0); /* Prevent compiler warning */
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76 }
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77
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78 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
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79 {
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80 pthread_attr_t type;
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81
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82 /* Set the thread attributes */
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83 if ( pthread_attr_init(&type) != 0 ) {
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84 SDL_SetError("Couldn't initialize pthread attributes");
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85 return(-1);
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86 }
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87 pthread_attr_setdetachstate(&type, PTHREAD_CREATE_JOINABLE);
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88
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89 /* Create the thread and go! */
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90 if ( pthread_create(&thread->handle, &type, RunThread, args) != 0 ) {
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91 SDL_SetError("Not enough resources to create thread");
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92 return(-1);
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93 }
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94
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95 if (riscos_using_threads == 0)
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96 {
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97 riscos_using_threads = 1;
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98 riscos_main_thread = SDL_ThreadID();
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99 }
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100
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101 return(0);
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102 }
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103
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104 void SDL_SYS_SetupThread(void)
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105 {
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106 int i;
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107 sigset_t mask;
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108
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109 /* Mask asynchronous signals for this thread */
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110 sigemptyset(&mask);
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111 for ( i=0; sig_list[i]; ++i ) {
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112 sigaddset(&mask, sig_list[i]);
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113 }
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114 pthread_sigmask(SIG_BLOCK, &mask, 0);
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115
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116 #ifdef PTHREAD_CANCEL_ASYNCHRONOUS
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117 /* Allow ourselves to be asynchronously cancelled */
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118 { int oldstate;
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119 pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &oldstate);
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120 }
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121 #endif
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122 }
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123
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124 Uint32 SDL_ThreadID(void)
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125 {
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126 return((Uint32)pthread_self());
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127 }
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128
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129 void SDL_SYS_WaitThread(SDL_Thread *thread)
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130 {
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131 pthread_join(thread->handle, 0);
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132 }
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133
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134 void SDL_SYS_KillThread(SDL_Thread *thread)
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135 {
d74fbf56f2f6 Date: Fri, 25 Jun 2004 13:29:15 +0100
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136 #ifdef PTHREAD_CANCEL_ASYNCHRONOUS
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137 pthread_cancel(thread->handle);
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Sam Lantinga <slouken@libsdl.org>
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138 #else
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139 pthread_kill(thread->handle, SIGKILL);
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Sam Lantinga <slouken@libsdl.org>
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140 #endif
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141 }
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142
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143 #endif