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annotate src/timer/amigaos/SDL_systimer.c @ 982:7207057447f5

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Add missing --add-missing
author Patrice Mandin <patmandin@gmail.com>
date Sat, 20 Nov 2004 20:57:28 +0000
parents b8d311d90021
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) 1997-2004 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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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 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 #include <stdio.h>
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29 #include <time.h>
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30 #include <signal.h>
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31 #include <unistd.h>
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32 #include <string.h>
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33 #include <errno.h>
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34 #include <exec/types.h>
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35 #ifdef __SASC
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36 #include <proto/dos.h>
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37 #include <clib/graphics_protos.h>
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38 #include <pragmas/graphics.h>
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39 #include <clib/exec_protos.h>
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40 #include <pragmas/exec.h>
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41 #elif defined(STORMC4_WOS)
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42 #include <proto/dos.h>
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43 #include <proto/exec.h>
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44 #include <proto/graphics.h>
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45 #else
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46 #include <inline/dos.h>
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47 #include <inline/exec.h>
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48 #include <inline/graphics.h>
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49 #endif
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50 #include "mydebug.h"
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51
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52 extern struct DosLibrary *DOSBase;
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53 extern struct ExecBase *SysBase;
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54 static struct GfxBase *GfxBase;
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55
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56 #include "SDL_error.h"
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57 #include "SDL_timer.h"
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58 #include "SDL_timer_c.h"
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59
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60 #if defined(DISABLE_THREADS) || defined(FORK_HACK)
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61 #define USE_ITIMER
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62 #endif
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63
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64 /* The first ticks value of the application */
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65
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66 #if !defined(__PPC__) || defined(STORMC4_WOS) || defined(MORPHOS)
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67 static clock_t start;
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68
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69 void SDL_StartTicks(void)
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70 {
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71 /* Set first ticks value */
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72 start=clock();
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73 }
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74
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75 Uint32 SDL_GetTicks (void)
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76 {
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77 clock_t ticks;
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78
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79 ticks=clock()-start;
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80
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81 #ifdef __SASC
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82 // CLOCKS_PER_SEC == 1000 !
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83
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84 return(ticks);
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85 #else
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86 // CLOCKS_PER_SEC != 1000 !
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87
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88 return ticks*(1000/CLOCKS_PER_SEC);
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89 #endif
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90 }
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91
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92 void SDL_Delay (Uint32 ms)
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93 {
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94 // Do a busy wait if time is less than 50ms
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95
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96 if(ms<50)
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97 {
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98 clock_t to_wait=clock();
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99
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100 #ifndef __SASC
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101 ms*=(CLOCKS_PER_SEC/1000);
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102 #endif
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103 to_wait+=ms;
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104
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105 while(clock()<to_wait);
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106 }
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107 else
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108 {
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109 Delay(ms/20);
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110 }
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111 }
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112
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113 #else
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114
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115 ULONG MY_CLOCKS_PER_SEC;
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116
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117 void PPC_TimerInit(void);
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118 APTR MyTimer;
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119
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120 ULONG start[2];
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121
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122 void SDL_StartTicks(void)
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123 {
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124 /* Set first ticks value */
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125 if(!MyTimer)
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126 PPC_TimerInit();
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127
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128 PPCGetTimerObject(MyTimer,PPCTIMERTAG_CURRENTTICKS,start);
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129 start[1]>>=10;
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130 start[1]|=((result[0]&0x3ff)<<22);
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131 start[0]>>=10;
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132 }
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133
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134 Uint32 SDL_GetTicks (void)
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135 {
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136 ULONG result[2];
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137 PPCGetTimerObject(MyTimer,PPCTIMERTAG_CURRENTTICKS,result);
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138
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139 // PPCAsr64p(result,10);
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140 // Non va, la emulo:
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141
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142 result[1]>>=10;
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143 result[1]|=((result[0]&0x3ff)<<22);
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144
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145 // Non mi interessa piu' result[0]
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146
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147 return result[1]*1000/MY_CLOCKS_PER_SEC;
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148 }
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149
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150 void SDL_Delay (Uint32 ms)
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151 {
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152 // Do a busy wait if time is less than 50ms
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153
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154 if(ms<50)
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155 {
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156 ULONG to_wait[2],actual[2];
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157 PPCGetTimerObject(MyTimer,PPCTIMERTAG_CURRENTTICKS,result);
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158 actual[1]=0;
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159 to_wait[1]+=ms*1000/MY_CLOCKS_PER_SEC;
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160
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161 while(actual[1]<to_wait[1])
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162 {
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163 PPCGetTimerObject(MyTimer,PPCTIMERTAG_CURRENTTICKS,actual);
0
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164 }
21
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165 }
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166 else
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167 {
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168 Delay(ms/50);
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169 }
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170 }
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171
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172 void PPC_TimerInit(void)
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173 {
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174 struct TagItem tags[]=
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175 {
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176 PPCTIMERTAG_CPU,TRUE,
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177 TAG_DONE,0
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178 };
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179
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180
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181 if(MyTimer=PPCCreateTimerObject(tags))
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182 {
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183 ULONG result[2];
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184
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185 PPCGetTimerObject(MyTimer,PPCTIMERTAG_TICKSPERSEC,result);
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186 D(bug("Timer inizializzato, TPS: %lu - %lu\n",result[0],result[1]));
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187 // PPCAsr64p(result,10);
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188 result[1]>>=10;
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189 result[1]|=((result[0]&0x3ff)<<22);
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190 result[0]>>=10;
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191
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192 D(bug("Shiftato TPS: %lu - %lu\n",result[0],result[1]));
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193 MY_CLOCKS_PER_SEC=result[1];
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194
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195 PPCGetTimerObject(MyTimer,PPCTIMERTAG_CURRENTTICKS,result);
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196
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197 D(bug("Current ticks: %lu - %lu\n",result[0],result[1]));
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198 result[1]>>=10;
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199 result[1]|=((result[0]&0x3ff)<<22);
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200 result[0]>>=10;
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201 // PPCAsr64p(result,10);
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202 D(bug("Shiftato: %lu - %lu\n",result[0],result[1]));
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203 }
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204 else
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205 {
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206 D(bug("Errore nell'inizializzazione del timer!\n"));
255
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207 }
21
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208 }
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209
0
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210 #endif
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211
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212 #include "SDL_thread.h"
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213
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214 /* Data to handle a single periodic alarm */
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215 static int timer_alive = 0;
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216 static SDL_Thread *timer_thread = NULL;
0
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217
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218 static int RunTimer(void *unused)
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219 {
21
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220 D(bug("SYSTimer: Entering RunTimer loop..."));
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221
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222 if(GfxBase==NULL)
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223 GfxBase=(struct GfxBase *)OpenLibrary("graphics.library",37);
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224
0
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225 while ( timer_alive ) {
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226 if ( SDL_timer_running ) {
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227 SDL_ThreadedTimerCheck();
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228 }
21
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229 if(GfxBase)
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230 WaitTOF(); // Check the timer every fifth of seconds. Was SDL_Delay(1)->BusyWait!
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231 else
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232 Delay(1);
0
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233 }
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234 D(bug("SYSTimer: EXITING RunTimer loop..."));
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235 return(0);
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236 }
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237
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238 /* This is only called if the event thread is not running */
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239 int SDL_SYS_TimerInit(void)
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240 {
255
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241 D(bug("Creating thread for the timer (NOITIMER)...\n"));
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242
0
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243 timer_alive = 1;
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244 timer_thread = SDL_CreateThread(RunTimer, NULL);
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245 if ( timer_thread == NULL )
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246 {
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247 D(bug("Creazione del thread fallita...\n"));
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248
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249 return(-1);
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250 }
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251 return(SDL_SetTimerThreaded(1));
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252 }
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253
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254 void SDL_SYS_TimerQuit(void)
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255 {
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256 timer_alive = 0;
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257 if ( timer_thread ) {
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258 SDL_WaitThread(timer_thread, NULL);
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259 timer_thread = NULL;
0
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260 }
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261 }
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262
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263 int SDL_SYS_StartTimer(void)
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264 {
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265 SDL_SetError("Internal logic error: AmigaOS uses threaded timer");
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266 return(-1);
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267 }
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268
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269 void SDL_SYS_StopTimer(void)
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270 {
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271 return;
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272 }