[unix-history] / 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.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	from: @(#)jobs.h	5.1 (Berkeley) 3/7/91
 *	jobs.h,v 1.4 1993/08/01 18:58:26 mycroft Exp
 */

/* 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
15637ed4 RG	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	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions
	10	* are met:
	11	* 1. Redistributions of source code must retain the above copyright
	12	* notice, this list of conditions and the following disclaimer.
	13	* 2. Redistributions in binary form must reproduce the above copyright
	14	* notice, this list of conditions and the following disclaimer in the
	15	* documentation and/or other materials provided with the distribution.
	16	* 3. All advertising materials mentioning features or use of this software
	17	* must display the following acknowledgement:
	18	* This product includes software developed by the University of
	19	* California, Berkeley and its contributors.
	20	* 4. Neither the name of the University nor the names of its contributors
	21	* may be used to endorse or promote products derived from this software
	22	* without specific prior written permission.
	23	*
	24	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	25	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	26	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	27	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	28	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	29	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	30	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	31	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	32	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	33	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	34	* SUCH DAMAGE.
	35	*
78ed81a3	36	* from: @(#)jobs.h 5.1 (Berkeley) 3/7/91
78ed81a3	37	* jobs.h,v 1.4 1993/08/01 18:58:26 mycroft Exp
15637ed4 RG	38	*/
	39
	40	/* Mode argument to forkshell. Don't change FORK_FG or FORK_BG. */
	41	#define FORK_FG 0
	42	#define FORK_BG 1
	43	#define FORK_NOJOB 2
	44
	45
	46	/*
	47	* A job structure contains information about a job. A job is either a
	48	* single process or a set of processes contained in a pipeline. In the
	49	* latter case, pidlist will be non-NULL, and will point to a -1 terminated
	50	* array of pids.
	51	*/
	52
	53	struct procstat {
	54	short pid; /* process id */
	55	short status; /* status flags (defined above) */
	56	char cmd; / text of command being run */
	57	};
	58
	59
	60	/* states */
	61	#define JOBSTOPPED 1 /* all procs are stopped */
	62	#define JOBDONE 2 /* all procs are completed */
	63
	64
	65	struct job {
	66	struct procstat ps0; /* status of process */
	67	struct procstat ps; / status or processes when more than one */
	68	short nprocs; /* number of processes */
	69	short pgrp; /* process group of this job */
	70	char state; /* true if job is finished */
	71	char used; /* true if this entry is in used */
	72	char changed; /* true if status has changed */
	73	#if JOBS
	74	char jobctl; /* job running under job control */
	75	#endif
	76	};
	77
	78	extern short backgndpid; /* pid of last background process */
	79
	80
	81	#ifdef __STDC__
	82	void setjobctl(int);
	83	void showjobs(int);
	84	struct job makejob(union node , int);
	85	int forkshell(struct job , union node , int);
	86	int waitforjob(struct job *);
	87	#else
	88	void setjobctl();
	89	void showjobs();
	90	struct job *makejob();
	91	int forkshell();
	92	int waitforjob();
	93	#endif
	94
	95	#if ! JOBS
	96	#define setjobctl(on) /* do nothing */
	97	#endif