/* DE1: $Id: sys_system.h 1713 2004-05-31 15:04:44Z skyjake $
 * Copyright (C) 2003, 2004 Jaakko Keränen <jaakko.keranen@iki.fi>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not: http://www.opensource.org/
 */

/*
 * sys_system.h: OS Specific Services Subsystem
 */

#ifndef __DOOMSDAY_SYSTEM_H__
#define __DOOMSDAY_SYSTEM_H__

#include "dd_types.h"

typedef int     (*systhreadfunc_t) (void *parm);
typedef int     semaphore_t;

extern boolean  novideo;

//extern int systics;

void            Sys_Init(void);
void            Sys_Shutdown(void);
void            Sys_Quit(void);
int             Sys_CriticalMessage(char *msg);
void            Sys_Sleep(int millisecs);
void            Sys_ShowCursor(boolean show);
void            Sys_HideMouse(void);
void            Sys_MessageBox(const char *msg, boolean iserror);
void            Sys_OpenTextEditor(const char *filename);
void            Sys_ShowWindow(boolean hide);

// Threads:
int             Sys_StartThread(systhreadfunc_t startpos, void *parm,
								int priority);
void            Sys_SuspendThread(int handle, boolean dopause);
int             Sys_WaitThread(int handle);

int             Sys_CreateMutex(const char *name);	// returns the mutex handle
void            Sys_DestroyMutex(int mutexHandle);
void            Sys_Lock(int mutexHandle);
void            Sys_Unlock(int mutexHandle);

semaphore_t     Sem_Create(unsigned int initialValue);	// returns handle
void            Sem_Destroy(semaphore_t semaphore);
void            Sem_P(semaphore_t semaphore);
void            Sem_V(semaphore_t semaphore);

#endif