tm.h

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/*
 *  The contents of this file are subject to the Mozilla Public License
 *  Version 1.0 (the "License"); you may not use this file except in
 *  compliance with the License. You may obtain a copy of the License
 *  at http://www.mozilla.org/MPL/
 *
 *  Software distributed under the License is distributed on an "AS IS"
 *  basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
 *  the License for the specific language governing rights and
 *  limitations under the License.
 *
 *  The Original Code is legOS code, released October 17, 1999.
 *
 *  The Initial Developer of the Original Code is Markus L. Noga.
 *  Portions created by Markus L. Noga are Copyright (C) 1999
 *  Markus L. Noga. All Rights Reserved.
 *
 *  Contributor(s): Markus L. Noga <markus@noga.de>
 *                  Lou Sortman <lou (at) sunsite (dot) unc (dot) edu>
 */

#ifndef __tm_h__
#define __tm_h__

#ifdef  __cplusplus
extern "C" {
#endif // __cplusplus

#include <config.h>
#include <mem.h>

//
// Definitions
//

typedef volatile unsigned char tstate_t;                 
typedef volatile unsigned char tflags_t;                 

typedef unsigned char priority_t;               

#define PRIO_LOWEST        1

#define PRIO_NORMAL       10

#define PRIO_HIGHEST      20

typedef unsigned long wakeup_t;                 

//

#define T_DEAD      0                           
#define T_ZOMBIE    1                           
#define T_WAITING   2                           
#define T_SLEEPING  3                           
#define T_RUNNING   4                           

//
//

#define T_KERNEL        (1 << 0)                    
#define T_USER          (1 << 1)                    
#define T_IDLE          (1 << 2)                    
#define T_SHUTDOWN      (1 << 7)                    


#define DEFAULT_STACK_SIZE  512                 

#ifndef DOXYGEN_SHOULD_SKIP_INTERNALS

struct _pchain_t {
  priority_t priority;                          

  struct _pchain_t *next;                       
  struct _pchain_t *prev;                       

  struct _tdata_t *ctid;                        
};

typedef struct _pchain_t pchain_t;

struct _tdata_t {
  size_t *sp_save;                              

  tstate_t tstate;                              
  tflags_t tflags;                              
  pchain_t *priority;                           

  struct _tdata_t *next;                        
  struct _tdata_t *prev;                        
  struct _tdata_t *parent;                      

  size_t *stack_base;                           

  wakeup_t(*wakeup) (wakeup_t);                 
  wakeup_t wakeup_data;                         
};


typedef struct _tdata_t tdata_t;

#endif // DOXYGEN_SHOULD_SKIP_INTERNALS 

#if defined(CONF_TM)


#define shutdown_requested() ((ctid->tflags & T_SHUTDOWN) != 0)
extern tdata_t *ctid;
#else // CONF_TM
#define shutdown_requested() (0)
#endif // CONF_TM


typedef signed int tid_t;

#ifdef  __cplusplus
}
#endif // __cplusplus

#endif

---