request.h

一个操作系统的源代码

/** include/internal/request.h
 **
 ** Original Author: Kasper Verdich Lund
 ** Date: 11.17.99
 **
 ** Description:
 ** 
 ** 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 or 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, write to the
 ** Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 ** Boston, MA 02111-1307 USA
 **
 *********************************************************Apostle OS**/

#ifndef __REQUEST_H_
#define __REQUEST_H_

#include <activation.h>
#include <ipc.h>
#include <process.h>
#include <types.h>

typedef struct request 
{
  struct request *next;
  long absoluteTick;
  Activation resumeActivation, *activation;
  Process *process, *partner;
  IPC_Options options;
  FlexiblePage fpage;
} Request __attribute__ ((packed));

Request *NewRequest(int ticks, Activation *a, Process *p,
                    Process *pp, IPC_Options o, FlexiblePage fp);
void    InitializeRequest(Request *r, int ticks, Activation *a, Process *p,
                          Process *pp, IPC_Options o, FlexiblePage fp);
#ifdef DEBUG
void    PrintRequest(Request *r);
#endif

typedef Request *RequestQueue;
 
void    InsertRequest(RequestQueue *q, Request *r);
Request *FindSendRequest(RequestQueue *q, Process *p, IPC_Options o);
Request *FindReceiveRequest(RequestQueue *q, Process *p, IPC_Options o);
Request *TimedOutRequest(RequestQueue *q);
#ifdef DEBUG
void    PrintRequestQueue(RequestQueue q);
#endif
void    ResumeRequest(Request *r, int status);

void Wait(int ticks, Process *p, IPC_Options o, FlexiblePage fp);

#endif /* __REQUEST_H_ */