[unix-history] / usr / src / bin / sh / jobs.h

/*-
 * Copyright (c) 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Kenneth Almquist.
 *
 * %sccs.include.redist.c%
 *
 *	@(#)jobs.h	5.1 (Berkeley) %G%
 */

/* Mode argument to forkshell.  Don't change FORK_FG or FORK_BG. */
#define FORK_FG 0
#define FORK_BG 1
#define FORK_NOJOB 2


/*
 * A job structure contains information about a job.  A job is either a
 * single process or a set of processes contained in a pipeline.  In the
 * latter case, pidlist will be non-NULL, and will point to a -1 terminated
 * array of pids.
 */

struct procstat {
	short pid;		/* process id */
	short status;		/* status flags (defined above) */
	char *cmd;		/* text of command being run */
};


/* states */
#define JOBSTOPPED 1		/* all procs are stopped */
#define JOBDONE 2		/* all procs are completed */


struct job {
	struct procstat ps0;	/* status of process */
	struct procstat *ps;	/* status or processes when more than one */
	short nprocs;		/* number of processes */
	short pgrp;		/* process group of this job */
	char state;		/* true if job is finished */
	char used;		/* true if this entry is in used */
	char changed;		/* true if status has changed */
#if JOBS
	char jobctl;		/* job running under job control */
#endif
};

extern short backgndpid;	/* pid of last background process */


#ifdef __STDC__
void setjobctl(int);
void showjobs(int);
struct job *makejob(union node *, int);
int forkshell(struct job *, union node *, int);
int waitforjob(struct job *);
#else
void setjobctl();
void showjobs();
struct job *makejob();
int forkshell();
int waitforjob();
#endif

#if ! JOBS
#define setjobctl(on)	/* do nothing */
#endif
Commit	Line	Data
c43d617f KB	1	/*-
	2	* Copyright (c) 1991 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* This code is derived from software contributed to Berkeley by
	6	* Kenneth Almquist.
	7	*
	8	* %sccs.include.redist.c%
	9	*
	10	* @(#)jobs.h 5.1 (Berkeley) %G%
	11	*/
	12
	13	/* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */
	14	#define FORK_FG 0
	15	#define FORK_BG 1
	16	#define FORK_NOJOB 2
	17
	18
	19	/*
	20	* A job structure contains information about a job. A job is either a
	21	* single process or a set of processes contained in a pipeline. In the
	22	* latter case, pidlist will be non-NULL, and will point to a -1 terminated
	23	* array of pids.
	24	*/
	25
	26	struct procstat {
	27	short pid; /* process id */
	28	short status; /* status flags (defined above) */
	29	char cmd; / text of command being run */
	30	};
	31
	32
	33	/* states */
	34	#define JOBSTOPPED 1 /* all procs are stopped */
	35	#define JOBDONE 2 /* all procs are completed */
	36
	37
	38	struct job {
	39	struct procstat ps0; /* status of process */
	40	struct procstat ps; / status or processes when more than one */
	41	short nprocs; /* number of processes */
	42	short pgrp; /* process group of this job */
	43	char state; /* true if job is finished */
	44	char used; /* true if this entry is in used */
	45	char changed; /* true if status has changed */
	46	#if JOBS
	47	char jobctl; /* job running under job control */
	48	#endif
	49	};
	50
	51	extern short backgndpid; /* pid of last background process */
	52
	53
	54	#ifdef __STDC__
	55	void setjobctl(int);
	56	void showjobs(int);
	57	struct job makejob(union node , int);
	58	int forkshell(struct job , union node , int);
	59	int waitforjob(struct job *);
	60	#else
	61	void setjobctl();
	62	void showjobs();
	63	struct job *makejob();
	64	int forkshell();
65	int waitforjob();
66	#endif
67
68	#if ! JOBS
69	#define setjobctl(on) /* do nothing */
70	#endif