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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, 2001 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@devolution.com
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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 /* AmigaOS thread management routines for SDL */
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29
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30 #include "SDL_error.h"
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31 #include "SDL_mutex.h"
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32 #include "SDL_thread.h"
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33 #include "SDL_thread_c.h"
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34 #include "SDL_systhread.h"
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35
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36 typedef struct {
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37 int (*func)(void *);
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38 void *data;
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39 SDL_Thread *info;
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40 struct Task *wait;
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41 } thread_args;
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42
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43 #if defined(__SASC) && !defined(__PPC__)
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44 __saveds __asm Uint32 RunThread(register __a0 char *args )
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45 #elif defined(__PPC__)
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46 Uint32 RunThread(char *args)
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47 #else
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48 Uint32 RunThread(char *args __asm("a0") )
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49 #endif
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50 {
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51 thread_args *data=(thread_args *)atol(args);
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52 struct Task *Father;
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53
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54 D(bug("Received data: %lx\n",data));
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55 Father=data->wait;
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56
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57 SDL_RunThread(data);
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58
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59 Signal(Father,SIGBREAKF_CTRL_F);
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60 return(0);
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61 }
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62
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63 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
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64 {
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65 /* Create the thread and go! */
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66 char buffer[20];
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67
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68 D(bug("Sending %lx to the new thread...\n",args));
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69
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70 if(args)
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71 sprintf(buffer,"%ld",args);
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72
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73
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74 thread->handle=(struct Task *)CreateNewProcTags(NP_Output,Output(),
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75 NP_Name,(ULONG)"SDL subtask",
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76 NP_CloseOutput, FALSE,
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77 NP_StackSize,20000,
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78 NP_Entry,(ULONG)RunThread,
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79 args ? NP_Arguments : TAG_IGNORE,(ULONG)buffer,
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80 TAG_DONE);
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81 if(!thread->handle)
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82 {
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83 SDL_SetError("Not enough resources to create thread");
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84 return(-1);
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85 }
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86
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87 return(0);
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88 }
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89
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90 void SDL_SYS_SetupThread(void)
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91 {
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92 }
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93
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94 Uint32 SDL_ThreadID(void)
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95 {
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96 return((Uint32)FindTask(NULL));
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97 }
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98
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99 void SDL_SYS_WaitThread(SDL_Thread *thread)
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100 {
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101 Wait(SIGBREAKF_CTRL_F|SIGBREAKF_CTRL_C);
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102 }
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103
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104 void SDL_SYS_KillThread(SDL_Thread *thread)
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105 {
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106 Signal((struct Task *)thread->handle,SIGBREAKF_CTRL_C);
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107 }
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