/*****************************************************************************************
 Copyright (c) 2002-2004 The UbixOS Project
 All rights reserved.

 Redistribution and use in source and binary forms, with or without modification, are
 permitted provided that the following conditions are met:

 Redistributions of source code must retain the above copyright notice, this list of
 conditions, the following disclaimer and the list of authors.  Redistributions in binary
 form must reproduce the above copyright notice, this list of conditions, the following
 disclaimer and the list of authors in the documentation and/or other materials provided
 with the distribution. Neither the name of the UbixOS Project nor the names of its
 contributors may be used to endorse or promote products derived from this software
 without specific prior written permission.

 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
 TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 $Id$

*****************************************************************************************/

#ifndef _SCHED_H
#define _SCHED_H

#include <vmm/vmm.h>
#include <vmm/paging.h>
#include <ubixos/types.h>
#include <ubixos/elf.h>
#include <ubixos/tty.h>
#include <vfs/file.h>
#include <sys/tss.h>

typedef enum { PLACEHOLDER=-2,DEAD=-1,NEW=0,READY=1,RUNNING=2,IDLE=3,FORK=4,WAIT=5 } tState;

typedef struct _kProcessor kProcessor;
struct _kProcessor
{
	kProcessor *First;
	kProcessor *Last;
	kProcessor *Next;
	kProcessor *Previous;
	uInt8	   id;
};

struct osInfo {
  uInt8                 timer;
  uInt8                 v86Task;
  bool                  v86If;
  uInt32                vmStart;
  uInt32                stdinSize;
  uInt32                controlKeys;
  char                 *stdin;
  char                  cwd[1024];
  };

typedef struct taskStruct
{
	pidType            id;
	struct taskStruct *first;
	struct taskStruct *last;
	struct taskStruct *prev;
	struct taskStruct *next;
	struct tssStruct   tss;
	struct i387Struct  i387;
	struct osInfo      oInfo;
	fileDescriptor    *imageFd;
	tState             state;
	uInt32             gid;
	struct taskStruct *parent;
	uInt32             uid;
	uInt16             usedMath;
	tty_term          *term;
	kProcessor	   *Affinity;
	uInt32		   maxPages;
	uInt32		   Quantum;
	uInt8		   Priority;
	mMap		   *FirstPage;
	mMap		   *LastPage;
	spinLock_t	   *lock;
  } kTask_t;


void	 SendTaskToProcessor(kTask_t *task,kProcessor *cpu);
int      sched_init();
int      sched_setStatus(pidType pid, tState state);
int      sched_setStatus2(kTask_t *task, tState state);
void     sched();
void     sched_yield();

kTask_t *schedNewTask();
kTask_t *schedFindTask(uInt32 id);

int sched_deleteTask(pidType);
int  sched_addDelTask(kTask_t *);

extern kTask_t *_current;
extern kTask_t *_usedMath;


#endif

/***
 END
 ***/