jcb.h

用VC编写的一个微型操作系统

// JCB.h: interface for the JCB class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_JCB_H__68DC5974_DF88_46FD_87A2_067AA487F740__INCLUDED_)
#define AFX_JCB_H__68DC5974_DF88_46FD_87A2_067AA487F740__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
const int JCBMAX = 7;
//status:
const int JIN = 1;
const int JREADY = 2;
const int JRUN = 3;
const int JEND = 4;
const int JOUT = 5;
//error:
const int ADDROVER =1;
const int ILLINS = 2;
const int INSOUT = 3;
const int OUTOVER = 4;
const int TIMEOVER = 5;
const int READOUT = 6;
const int OVERFLOW = 7;
const int NJOE = 8;
const int NPOB = 9;
const int NPOE = 10;
const int NDOE = 11;

struct jcbtype
{
	char name[4];
	int  resultline;
	int  error;
	int  eraddr;
	//int  jobtime;//用户作业时间
	int  time;//估计作业时间
	int  jcputime;//实际运行时间
	int  line;//估计最大输出行数
	int  rpadd;//指令磁道
	int  rplen;
	int  rdadd;//数据磁道
	int  rdlen;
	int  wdadd;//输出井磁道
	int  wdlen;
	char jpc[2];
	char jc;
	char jr[4];
	int  jio;
	int  logintime;
	int  logouttime;
	jcbtype *jnext;
};
class JCB  
{
public:
	JCB();
	virtual ~JCB();
	jcbtype  JcbTab[JCBMAX];//声明静态变量
	jcbtype* jcb_head;
	jcbtype* jcb_tail;
	jcbtype* out_head;
	jcbtype* out_tail;
	jcbtype* jcbfree_head;
	jcbtype* jcbfree_tail;
	int      free_jcb_count;
};

#endif // !defined(AFX_JCB_H__68DC5974_DF88_46FD_87A2_067AA487F740__INCLUDED_)