jobs.c File Reference

Job control functions for the YASH shell. More...

#include "../include/jobs.h"
#include "../include/yash.h"
#include <stdio.h>
#include <string.h>

Functions
void	jobs_init (void)
	Initialize the job table.
int	jobs_add (pid_t pgid, const char *cmdline, int is_background)
	Add a job to the job table.
void	jobs_mark (pid_t pgid, JobStatus status)
	Mark a job as running or stopped.
void	jobs_print ()
	Print all jobs.
int	jobs_pick_most_recent_for_fg (void)
	Pick the most recent job for foreground.
int	jobs_pick_most_recent_stopped_for_bg (void)
	Pick the most recent stopped job for background.
pid_t	jobs_get_pgid (int job_id)
	Get the pgid of a job.
void	jobs_reap_done_and_print (void)
	Reap done jobs and print them.
void	jobs_print_one (int job_id)
	Print a single job.
const char *	jobs_get_cmdline (int job_id)
	Get the cmdline of a job.
void	jobs_set_background (pid_t pgid, int is_bg)
	Set the background of a job.

Detailed Description

Job control functions for the YASH shell.

Author

Nathan Lemma

Date

09-16-2025

This file contains the job control functions for the YASH shell.

Function Documentation

jobs_add()

int jobs_add	(	pid_t	pgid,
		const char *	cmdline,
		int	is_background )

Add a job to the job table.

Parameters

pgid
cmdline
is_background

Returns

int

jobs_get_cmdline()

const char * jobs_get_cmdline

(

int

job_id

)

Get the cmdline of a job.

Parameters

job_id

Returns

const char*

jobs_get_pgid()

pid_t jobs_get_pgid

(

int

job_id

)

Get the pgid of a job.

Parameters

job_id

Returns

pid_t

jobs_mark()

void jobs_mark	(	pid_t	pgid,
		JobStatus	status )

Mark a job as running or stopped.

Parameters

pgid
status

jobs_pick_most_recent_for_fg()

int jobs_pick_most_recent_for_fg

(

void

)

Pick the most recent job for foreground.

Returns

int

jobs_pick_most_recent_stopped_for_bg()

int jobs_pick_most_recent_stopped_for_bg

(

void

)

Pick the most recent stopped job for background.

Returns

int

jobs_print_one()

void jobs_print_one

(

int

job_id

)

Print a single job.

Parameters

job_id

jobs_set_background()

void jobs_set_background	(	pid_t	pgid,
		int	is_bg )

Set the background of a job.

Parameters

pgid
is_bg