This repository has been archived by the owner on Feb 11, 2021. It is now read-only.
SDL_systhread.c
1
2
/*
SDL - Simple DirectMedia Layer
3
Copyright (C) 1997-2006 Sam Lantinga
4
5
This library is free software; you can redistribute it and/or
6
modify it under the terms of the GNU Lesser General Public
7
License as published by the Free Software Foundation; either
8
version 2.1 of the License, or (at your option) any later version.
9
10
11
12
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13
Lesser General Public License for more details.
15
16
17
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19
Sam Lantinga
20
slouken@libsdl.org
21
*/
22
#include "SDL_config.h"
23
24
25
/* Win32 thread management routines for SDL */
26
27
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
28
29
#include "SDL_thread.h"
30
31
#include "../SDL_thread_c.h"
#include "../SDL_systhread.h"
33
34
35
36
37
38
39
#ifndef SDL_PASSED_BEGINTHREAD_ENDTHREAD
#ifndef _WIN32_WCE
/* We'll use the C library from this DLL */
#include <process.h>
#endif
#if __GNUC__
40
41
42
43
44
45
46
47
48
typedef unsigned long (__cdecl * pfnSDL_CurrentBeginThread) (void *, unsigned,
unsigned
(__stdcall *
func) (void *),
void *arg,
unsigned,
unsigned
*threadID);
typedef void (__cdecl * pfnSDL_CurrentEndThread) (unsigned code);
49
50
51
52
53
#elif defined(__WATCOMC__)
/* This is for Watcom targets except OS2 */
#if __WATCOMC__ < 1240
#define __watcall
#endif
54
55
56
57
58
59
60
61
62
63
64
typedef unsigned long (__watcall * pfnSDL_CurrentBeginThread) (void *,
unsigned,
unsigned
(__stdcall *
func) (void
*),
void *arg,
unsigned,
unsigned
*threadID);
typedef void (__watcall * pfnSDL_CurrentEndThread) (unsigned code);
66
67
68
69
70
71
72
typedef uintptr_t(__cdecl * pfnSDL_CurrentBeginThread) (void *, unsigned,
unsigned (__stdcall *
func) (void
*),
void *arg, unsigned,
unsigned *threadID);
typedef void (__cdecl * pfnSDL_CurrentEndThread) (unsigned code);
73
74
75
76
#endif
#endif /* !SDL_PASSED_BEGINTHREAD_ENDTHREAD */
77
78
typedef struct ThreadStartParms
{
79
80
void *args;
pfnSDL_CurrentEndThread pfnCurrentEndThread;
81
} tThreadStartParms, *pThreadStartParms;
83
84
static unsigned __stdcall
RunThread(void *data)
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
pThreadStartParms pThreadParms = (pThreadStartParms) data;
pfnSDL_CurrentEndThread pfnCurrentEndThread = NULL;
// Call the thread function!
SDL_RunThread(pThreadParms->args);
// Get the current endthread we have to use!
if (pThreadParms) {
pfnCurrentEndThread = pThreadParms->pfnCurrentEndThread;
SDL_free(pThreadParms);
}
// Call endthread!
if (pfnCurrentEndThread)
(*pfnCurrentEndThread) (0);
return (0);
101
102
}
103
#ifdef SDL_PASSED_BEGINTHREAD_ENDTHREAD
104
105
106
107
int
SDL_SYS_CreateThread(SDL_Thread * thread, void *args,
pfnSDL_CurrentBeginThread pfnBeginThread,
pfnSDL_CurrentEndThread pfnEndThread)
108
{
110
111
int
SDL_SYS_CreateThread(SDL_Thread * thread, void *args)
112
113
{
#ifdef _WIN32_WCE
114
115
pfnSDL_CurrentBeginThread pfnBeginThread = NULL;
pfnSDL_CurrentEndThread pfnEndThread = NULL;
117
118
pfnSDL_CurrentBeginThread pfnBeginThread = _beginthreadex;
pfnSDL_CurrentEndThread pfnEndThread = _endthreadex;
119
120
#endif
#endif /* SDL_PASSED_BEGINTHREAD_ENDTHREAD */
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
unsigned threadid;
pThreadStartParms pThreadParms =
(pThreadStartParms) SDL_malloc(sizeof(tThreadStartParms));
if (!pThreadParms) {
SDL_OutOfMemory();
return (-1);
}
// Save the function which we will have to call to clear the RTL of calling app!
pThreadParms->pfnCurrentEndThread = pfnEndThread;
// Also save the real parameters we have to pass to thread function
pThreadParms->args = args;
if (pfnBeginThread) {
thread->handle =
(SYS_ThreadHandle) pfnBeginThread(NULL, 0, RunThread,
pThreadParms, 0, &threadid);
} else {
thread->handle =
CreateThread(NULL, 0, RunThread, pThreadParms, 0, &threadid);
}
if (thread->handle == NULL) {
SDL_SetError("Not enough resources to create thread");
return (-1);
}
return (0);
146
147
}
148
149
void
SDL_SYS_SetupThread(void)
150
{
152
153
}
154
155
Uint32
SDL_ThreadID(void)
156
{
157
return ((Uint32) GetCurrentThreadId());
158
159
}
160
161
void
SDL_SYS_WaitThread(SDL_Thread * thread)
162
{
163
164
WaitForSingleObject(thread->handle, INFINITE);
CloseHandle(thread->handle);
165
166
167
168
169
170
}
/* WARNING: This function is really a last resort.
* Threads should be signaled and then exit by themselves.
* TerminateThread() doesn't perform stack and DLL cleanup.
*/
171
172
void
SDL_SYS_KillThread(SDL_Thread * thread)
173
{
174
TerminateThread(thread->handle, FALSE);
175
}
176
177
/* vi: set ts=4 sw=4 expandtab: */