This repository has been archived by the owner on Feb 11, 2021.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) 1997-2009 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
20
21
Sam Lantinga
slouken@libsdl.org
*/
22
#include "SDL_config.h"
23
24
25
26
27
28
29
30
31
/* OS/2 thread management routines for SDL */
#include <process.h>
#define INCL_DOSERRORS
#define INCL_DOSPROCESS
#include <os2.h>
#include "SDL_thread.h"
32
#include "../SDL_systhread.h"
33
#include "../SDL_thread_c.h"
34
35
36
typedef struct ThreadStartParms
{
37
38
void *args;
pfnSDL_CurrentEndThread pfnCurrentEndThread;
39
40
} tThreadStartParms, *pThreadStartParms;
41
42
static void
threadfunc(void *pparm)
43
{
44
45
46
47
48
49
50
51
52
53
54
55
56
57
pThreadStartParms pThreadParms = pparm;
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) ();
58
59
}
60
61
62
63
int
SDL_SYS_CreateThread(SDL_Thread * thread, void *args,
pfnSDL_CurrentBeginThread pfnBeginThread,
pfnSDL_CurrentEndThread pfnEndThread)
64
{
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
pThreadStartParms pThreadParms = SDL_malloc(sizeof(tThreadStartParms));
if (!pThreadParms) {
SDL_SetError("Not enough memory to create thread");
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;
// Start the thread using the runtime library of calling app!
thread->threadid = thread->handle =
(*pfnBeginThread) (threadfunc, NULL, 512 * 1024, pThreadParms);
if ((int) thread->threadid <= 0) {
SDL_SetError("Not enough resources to create thread");
return (-1);
}
return (0);
82
83
}
84
85
void
SDL_SYS_SetupThread(void)
86
{
88
89
}
90
91
DECLSPEC Uint32 SDLCALL
SDL_ThreadID(void)
92
{
93
94
95
PTIB tib;
DosGetInfoBlocks(&tib, NULL);
return ((Uint32) (tib->tib_ptib2->tib2_ultid));
96
97
}
98
99
void
SDL_SYS_WaitThread(SDL_Thread * thread)
100
{
101
102
TID tid = thread->handle;
DosWaitThread(&tid, DCWW_WAIT);
103
104
}
105
/* vi: set ts=4 sw=4 expandtab: */