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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
*/
/* Win32 thread management routines for SDL */
#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
#ifndef _WIN32_WCE
#include <process.h>
#endif
#include "SDL_error.h"
#include "SDL_thread.h"
#include "SDL_systhread.h"
static unsigned __stdcall RunThread(void *data)
{
SDL_RunThread(data);
return(0);
}
int SDL_SYS_CreateThread(SDL_Thread *thread, void *args)
{
unsigned threadid;
/*
* Avoid CreateThread: https://bugzilla.libsdl.org/show_bug.cgi?id=22
*
* have to use _beginthreadex if we want the returned handle
* to be accessible after the thread exits
* threads created with _beginthread auto-close the handle
* Windows CE still use CreateThread.
*/
#ifdef _WIN32_WCE
thread->handle = CreateThread(NULL, 0, RunThread, args, 0, &threadid);
#else
thread->handle = (SYS_ThreadHandle) _beginthreadex(NULL, 0, RunThread,
args, 0, &threadid);
#endif
if (thread->handle == NULL) {
SDL_SetError("Not enough resources to create thread");
return(-1);
}
return(0);
}
void SDL_SYS_SetupThread(void)
{
return;
}
Uint32 SDL_ThreadID(void)
{
return((Uint32)GetCurrentThreadId());
}
void SDL_SYS_WaitThread(SDL_Thread *thread)
{
WaitForSingleObject(thread->handle, INFINITE);
CloseHandle(thread->handle);
}
/* 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.
*/
void SDL_SYS_KillThread(SDL_Thread *thread)
{
TerminateThread(thread->handle, FALSE);
}