# sched.h

    00001 /**************************************************************************************
    00002  Copyright (c) 2002 The UbixOS Project
    00003  All rights reserved.
    00004
    00005 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
    00006
    00007 Redistributions of source code must retain the above copyright notice, this list of conditions, the following disclaimer and the list of authors.
    00008 Redistributions in binary form must reproduce the above copyright notice, this list of conditions, the following disclaimer and the list of authors
    00009 in the documentation and/or other materials provided with the distribution. Neither the name of the UbixOS Project nor the names of its
    00010 contributors may be used to endorse or promote products derived from this software without specific prior written permission.
    00011
    00012 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
    00013 WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
    00014 PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
    00015 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
    00016 GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
    00017 OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    00018 OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
    00019
    00020  $Id$
    00021
    00022 **************************************************************************************/
    00023
    00024 #ifndef _SCHED_H
    00025 #define _SCHED_H
    00026
    00027 #ifdef __cplusplus
    00028 extern "C" {
    00029 #endif
    00030
    00031 #include <ubixos/types.h>
    00032 #include <ubixos/elf.h>
    00033 #include <vfs/file.h>
    00034 #include <sys/tss.h>
    00035
    00036
    00037 typedef enum { DEAD=-1,NEW=0,READY=1,RUNNING=2,IDLE=3 } tState;
    00038
    00039 struct osInfo {
    00040   struct mountPoints   *container;
    00041   elfSectionheader     *sectionHeader;
    00042   struct taskFileInfo   fileInfo;
    00043   struct consoleStruct *terminal;
    00044   uInt16                sectionCount;
    00045   uInt16                stringSection;
    00046   uInt8                 timer;
    00047   uInt8                 v86Task;
    00048   bool                  v86If;
    00049   uInt32                curDir;
    00050   uInt32                vmStart;
    00051   uInt32                stdinSize;
    00052   uInt32                controlKeys;
    00053   char                 *stdin;
    00054   char                 *shstrtab;
    00055   char                 *cwd;
    00056   };
    00057
    00058 typedef struct taskStruct {
    00059   pidType           id;
    00060   struct taskStruct *prev;
    00061   struct taskStruct *next;
    00062   struct tssStruct  tss;
    00063   struct i387Struct i387;
    00064   struct osInfo     oInfo;
    00065   tState            state;
    00066   uInt32            gid;
    00067   uInt32            uid;
    00068   uInt16            usedMath;
    00069   } kTask_t;
    00070
    00071
    00072 int schedInit();
    00073 void sched();
    00074 void schedYield();
    00075 int schedEndTask(pidType pid);
    00076 kTask_t *schedNewTask();
    00077 kTask_t *schedFindTask(uInt32 id);
    00078 int deleteTask(uInt32);
    00079
    00080 extern kTask_t *taskList;
    00081 extern uInt32  nextID;
    00082 extern kTask_t *_current;
    00083 extern kTask_t *_usedMath;
    00084
    00085 #ifdef __cplusplus
    00086 }
    00087 #endif
    00088
    00089 #endif
    00090