/*****************************************************************************************
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 <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 enum { PLACEHOLDER = -2,DEAD,NEW,READY,RUNNING,IDLE,FORK,WAIT } tState;
struct osInfo {
uInt8 timer;
uInt8 v86Task;
bool v86If;
uInt32 vmStart;
uInt32 stdinSize;
uInt32 controlKeys;
char *stdin;
char *cwd; /* current working dir */
};
typedef struct taskStruct {
struct taskStruct *prev;
struct taskStruct *next;
struct i387Struct i387;
struct i386_frame *iframe;
pidType id;
pidType parentPid;
struct osInfo oInfo;
uInt32 cr3;
char kernelStack[0x2000];
fileDescriptor *imageFd;
tState state;
uInt32 gid;
uInt32 uid;
uInt32 timeSlice;
uInt16 usedMath;
uInt16 nice;
tty_term *term;
} kTask_t;
typedef struct prioQueue {
kTask_t *start;
kTask_t *end;
struct prioQueue *next;
struct prioQueue *prev;
uInt32 prio;
} prioQueue_t;
#define MAXPRIOLEVELS 11
int sched_init();
int sched_setStatus(pidType,tState);
uInt32 sched(struct i386_frame);
void sched_yield();
void schedEndTask(pidType pid);
kTask_t *schedNewTask();
kTask_t *schedFindTask(uInt32 id);
int deleteTask(uInt32);
extern kTask_t *_current;
extern kTask_t *_usedMath;
extern kTask_t *delList;
#endif
/***
$Log$
Revision 1.22 2004/08/21 23:47:50 reddawg
*** empty log message ***
Revision 1.21 2004/08/21 17:36:57 reddawg
updates: converted to software task switching however it is not working yet
Revision 1.20 2004/08/09 12:58:05 reddawg
let me know when you got the surce
Revision 1.19 2004/08/06 22:43:04 reddawg
ok
Revision 1.18 2004/08/06 22:32:16 reddawg
Ubix Works Again
Revision 1.16 2004/08/04 08:17:57 reddawg
tty: we have primative ttys try f1-f5 so it is easier to use and debug
ubixos
Revision 1.15 2004/07/29 21:32:16 reddawg
My quick lunchs breaks worth of updates....
Revision 1.14 2004/07/21 17:15:02 reddawg
removed garbage
Revision 1.13 2004/07/21 14:43:14 flameshadow
add: added cwc (current working container) to the osInfo strut
Revision 1.12 2004/07/19 02:32:21 reddawg
sched: we now set task status to dead which then makes the scheduler do some clean it could be some minor overhead but i feel this is our most efficient approach right now to prevent corruption of the queues
Revision 1.11 2004/07/19 02:08:27 reddawg
Cleaned out the rest of debuging code also temporarily disabled the ip stack to improve boot time
Revision 1.10 2004/07/18 05:24:15 reddawg
Fixens
Revision 1.9 2004/07/09 13:23:20 reddawg
sched: schedInit to sched_init
Adjusted initialization routines
Revision 1.8 2004/06/22 14:02:14 solar
Added the PLACEHOLDER state for a task
Revision 1.7 2004/06/18 13:01:47 solar
Added nice and timeSlice members to the kTask_t type
Revision 1.6 2004/06/17 02:12:57 reddawg
Cleaned Out Dead Code
Revision 1.5 2004/06/16 14:04:51 reddawg
Renamed a typedef
Revision 1.4 2004/06/14 12:20:54 reddawg
notes: many bugs repaired and ld works 100% now.
Revision 1.3 2004/05/21 15:49:13 reddawg
The os does better housekeeping now when a task is exited
Revision 1.2 2004/05/21 15:20:00 reddawg
Cleaned up
END
***/
