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SDL_systhread.c
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SDL_systhread.c
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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997-2006 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
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
Lesser General Public License for more details.
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
Sam Lantinga
slouken@libsdl.org
*/
#include "SDL_config.h"
/* BeOS thread management routines for SDL */
#include "SDL_mutex.h"
#include "SDL_thread.h"
#include "../SDL_thread_c.h"
#include "../SDL_systhread.h"
#include "mydebug.h"
typedef struct
{
int (*func) (void *);
void *data;
SDL_Thread *info;
struct Task *wait;
} thread_args;
#ifndef MORPHOS
#if defined(__SASC) && !defined(__PPC__)
__saveds __asm Uint32
RunThread (register __a0 char *args)
#elif defined(__PPC__)
Uint32
RunThread (char *args)
#else
Uint32 __saveds
RunThread (char *args __asm ("a0"))
#endif
{
#ifdef STORMC4_WOS
thread_args *data = (thread_args *) args;
#else
thread_args *data = (thread_args *) atol (args);
#endif
struct Task *Father;
D (bug ("Received data: %lx\n", data));
Father = data->wait;
SDL_RunThread (data);
Signal (Father, SIGBREAKF_CTRL_F);
D (bug ("Thread with data %lx ended\n", data));
return (0);
}
#else
#include <emul/emulinterface.h>
Uint32
RunTheThread (void)
{
thread_args *data = (thread_args *) atol ((char *) REG_A0);
struct Task *Father;
D (bug ("Received data: %lx\n", data));
Father = data->wait;
SDL_RunThread (data);
Signal (Father, SIGBREAKF_CTRL_F);
D (bug ("Thread with data %lx ended\n", data));
return (0);
}
struct EmulLibEntry RunThreadStruct = {
TRAP_LIB,
0,
(ULONG) RunTheThread
};
void *RunThread = &RunThreadStruct;
#endif
int
SDL_SYS_CreateThread (SDL_Thread * thread, void *args)
{
/* Create the thread and go! */
char buffer[20];
D (bug ("Sending %lx to the new thread...\n", args));
if (args)
SDL_snprintf (buffer, SDL_arraysize (buffer), "%ld", args);
#ifdef STORMC4_WOS
thread->handle = CreateTaskPPCTags (TASKATTR_CODE, RunThread,
TASKATTR_NAME, "SDL subtask",
TASKATTR_STACKSIZE, 100000,
(args ? TASKATTR_R3 : TAG_IGNORE),
args, TASKATTR_INHERITR2, TRUE,
TAG_DONE);
#else
thread->handle = (struct Task *) CreateNewProcTags (NP_Output, Output (),
NP_Name,
(ULONG) "SDL subtask",
NP_CloseOutput, FALSE,
NP_StackSize, 20000,
NP_Entry,
(ULONG) RunThread,
args ? NP_Arguments :
TAG_IGNORE,
(ULONG) buffer,
TAG_DONE);
#endif
if (!thread->handle) {
SDL_SetError ("Not enough resources to create thread");
return (-1);
}
return (0);
}
void
SDL_SYS_SetupThread (void)
{
}
Uint32
SDL_ThreadID (void)
{
return ((Uint32) FindTask (NULL));
}
void
SDL_SYS_WaitThread (SDL_Thread * thread)
{
SetSignal (0L, SIGBREAKF_CTRL_F | SIGBREAKF_CTRL_C);
Wait (SIGBREAKF_CTRL_F | SIGBREAKF_CTRL_C);
}
void
SDL_SYS_KillThread (SDL_Thread * thread)
{
Signal ((struct Task *) thread->handle, SIGBREAKF_CTRL_C);
}
/* vi: set ts=4 sw=4 expandtab: */