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annotate src/thread/win32/SDL_systhread.c @ 1585:980d2a0dc2a3

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Date: Tue, 4 Mar 2003 15:05:31 -0800 From: "Jim" Subject: [SDL] Frame Buffer patches... Okay I'm new at patch generation - so please tell me if there's a better way I could have done this. Attached are two patch files generated with 'cvs diff -u' SDL-fb-open-lock.patch applies to SDL_fbvideo.c Modifies the open loop to check /dev/fb/0 found on devfs... Modifies the lock code to return failure if the current virtual terminal is not the one opened for frame buffer writing... Lock would hang forever if switched away (ctrl-alt-F1) ... SDL-fb-mousedrv-screensave.patch applies to SDL_fbevents.c Switches default mouse mode based on SDL_MOUSEDRV - currently only accepts PS2 - otherwise default is MS Mouse. When the screen is switched - exisiting code (wrapped in ifdef SAVE_SCREEN_COTENTS) would save the wrong bit of the screen.... ( I run frame buffer 1600x1200, the size I requested was 800x600 - the save would save the top 800 lines (non biased) and restore them... Adding screen->offset fixed that ) However, if that option is not set, then a call to SDL_UpdateRect (full screen) is made. (which may have had it's contents changed since the screen is not entirely locked because of lock-failure patch) Jim [patches slightly tweaked for SDL 1.2.10]
author Sam Lantinga <slouken@libsdl.org>
date Wed, 22 Mar 2006 07:48:22 +0000
parents 9fb0eee04dd9
children 14717b52abc0
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 #include "SDL_config.h"
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23
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24 /* Win32 thread management routines for SDL */
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25
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26 #define WIN32_LEAN_AND_MEAN
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27 #include <windows.h>
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28
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29 #include "SDL_thread.h"
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30 #include "../SDL_thread_c.h"
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31 #include "../SDL_systhread.h"
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32
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33 #ifndef SDL_PASSED_BEGINTHREAD_ENDTHREAD
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34 #ifndef _WIN32_WCE
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35 /* We'll use the C library from this DLL */
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36 #include <process.h>
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37 #endif
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38
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39 #if __GNUC__
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40 typedef unsigned long (__cdecl *pfnSDL_CurrentBeginThread) (void *, unsigned,
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41 unsigned (__stdcall *func)(void *), void *arg,
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42 unsigned, unsigned *threadID);
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43 typedef void (__cdecl *pfnSDL_CurrentEndThread)(unsigned code);
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44 #else
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45 typedef uintptr_t (__cdecl *pfnSDL_CurrentBeginThread) (void *, unsigned,
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46 unsigned (__stdcall *func)(void *), void *arg,
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47 unsigned, unsigned *threadID);
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48 typedef void (__cdecl *pfnSDL_CurrentEndThread)(unsigned code);
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49 #endif
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50 #endif /* !SDL_PASSED_BEGINTHREAD_ENDTHREAD */
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51
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52
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53 typedef struct ThreadStartParms
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54 {
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55 void *args;
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56 pfnSDL_CurrentEndThread pfnCurrentEndThread;
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57 } tThreadStartParms, *pThreadStartParms;
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58
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59 static unsigned __stdcall RunThread(void *data)
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60 {
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61 pThreadStartParms pThreadParms = (pThreadStartParms)data;
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62 pfnSDL_CurrentEndThread pfnCurrentEndThread = NULL;
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63
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64 // Call the thread function!
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65 SDL_RunThread(pThreadParms->args);
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66
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67 // Get the current endthread we have to use!
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68 if (pThreadParms)
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69 {
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70 pfnCurrentEndThread = pThreadParms->pfnCurrentEndThread;
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71 SDL_free(pThreadParms);
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72 }
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73 // Call endthread!
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74 if (pfnCurrentEndThread)
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75 (*pfnCurrentEndThread)(0);
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76 return(0);
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77 }
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78
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79 #ifdef SDL_PASSED_BEGINTHREAD_ENDTHREAD
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80 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args, pfnSDL_CurrentBeginThread pfnBeginThread, pfnSDL_CurrentEndThread pfnEndThread)
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81 {
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82 #else
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83 int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
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84 {
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85 #ifdef _WIN32_WCE
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86 pfnSDL_CurrentBeginThread pfnBeginThread = NULL;
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87 pfnSDL_CurrentEndThread pfnEndThread = NULL;
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88 #else
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89 pfnSDL_CurrentBeginThread pfnBeginThread = _beginthreadex;
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90 pfnSDL_CurrentEndThread pfnEndThread = _endthreadex;
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91 #endif
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92 #endif /* SDL_PASSED_BEGINTHREAD_ENDTHREAD */
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93 unsigned threadid;
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94 pThreadStartParms pThreadParms = (pThreadStartParms)SDL_malloc(sizeof(tThreadStartParms));
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95 if (!pThreadParms) {
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96 SDL_OutOfMemory();
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97 return(-1);
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98 }
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99
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100 // Save the function which we will have to call to clear the RTL of calling app!
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101 pThreadParms->pfnCurrentEndThread = pfnEndThread;
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102 // Also save the real parameters we have to pass to thread function
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103 pThreadParms->args = args;
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104
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105 if (pfnBeginThread) {
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106 thread->handle = (SYS_ThreadHandle) pfnBeginThread(NULL, 0, RunThread,
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107 pThreadParms, 0, &threadid);
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108 } else {
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109 thread->handle = CreateThread(NULL, 0, RunThread, pThreadParms, 0, &threadid);
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110 }
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111 if (thread->handle == NULL) {
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112 SDL_SetError("Not enough resources to create thread");
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113 return(-1);
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114 }
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115 return(0);
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116 }
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117
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118 void SDL_SYS_SetupThread(void)
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119 {
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120 return;
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121 }
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122
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123 Uint32 SDL_ThreadID(void)
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124 {
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125 return((Uint32)GetCurrentThreadId());
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126 }
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127
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128 void SDL_SYS_WaitThread(SDL_Thread *thread)
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129 {
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130 WaitForSingleObject(thread->handle, INFINITE);
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131 CloseHandle(thread->handle);
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132 }
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133
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134 /* WARNING: This function is really a last resort.
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135 * Threads should be signaled and then exit by themselves.
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136 * TerminateThread() doesn't perform stack and DLL cleanup.
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137 */
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138 void SDL_SYS_KillThread(SDL_Thread *thread)
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139 {
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140 TerminateThread(thread->handle, FALSE);
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141 }