Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with
or
.
Download ZIP
Branch: master
Fetching contributors…

Cannot retrieve contributors at this time

349 lines (296 sloc) 5.652 kB
/** \file builtin_jobs.c
Functions for executing the jobs builtin.
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <wchar.h>
#include <unistd.h>
#include <termios.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include <wctype.h>
#include "fallback.h"
#include "util.h"
#include "wutil.h"
#include "builtin.h"
#include "proc.h"
#include "parser.h"
#include "common.h"
#include "wgetopt.h"
/**
Print modes for the jobs builtin
*/
enum
{
JOBS_DEFAULT, /**< Print lots of general info */
JOBS_PRINT_PID, /**< Print pid of each process in job */
JOBS_PRINT_COMMAND, /**< Print command name of each process in job */
JOBS_PRINT_GROUP, /**< Print group id of job */
}
;
#ifdef HAVE__PROC_SELF_STAT
/**
Calculates the cpu usage (in percent) of the specified job.
*/
static int cpu_use( job_t *j )
{
double u=0;
process_t *p;
for( p=j->first_process; p; p=p->next )
{
struct timeval t;
int jiffies;
gettimeofday( &t, 0 );
jiffies = proc_get_jiffies( p );
double t1 = 1000000.0*p->last_time.tv_sec+p->last_time.tv_usec;
double t2 = 1000000.0*t.tv_sec+t.tv_usec;
/* fwprintf( stderr, L"t1 %f t2 %f p1 %d p2 %d\n",
t1, t2, jiffies, p->last_jiffies );
*/
u += ((double)(jiffies-p->last_jiffies))/(t2-t1);
}
return u*1000000;
}
#endif
/**
Print information about the specified job
*/
static void builtin_jobs_print( job_t *j, int mode, int header )
{
process_t *p;
switch( mode )
{
case JOBS_DEFAULT:
{
if( header )
{
/*
Print table header before first job
*/
sb_append( sb_out, _( L"Job\tGroup\t" ));
#ifdef HAVE__PROC_SELF_STAT
sb_append( sb_out, _( L"CPU\t" ) );
#endif
sb_append( sb_out, _( L"State\tCommand\n" ) );
}
sb_printf( sb_out, L"%d\t%d\t", j->job_id, j->pgid );
#ifdef HAVE__PROC_SELF_STAT
sb_printf( sb_out, L"%d%%\t", cpu_use(j) );
#endif
sb_append( sb_out,
job_is_stopped(j)?_(L"stopped"):_(L"running"),
L"\t",
j->command,
L"\n",
(void *)0 );
break;
}
case JOBS_PRINT_GROUP:
{
if( header )
{
/*
Print table header before first job
*/
sb_append( sb_out, _( L"Group\n" ));
}
sb_printf( sb_out, L"%d\n", j->pgid );
break;
}
case JOBS_PRINT_PID:
{
if( header )
{
/*
Print table header before first job
*/
sb_append( sb_out, _( L"Procces\n" ));
}
for( p=j->first_process; p; p=p->next )
{
sb_printf( sb_out, L"%d\n", p->pid );
}
break;
}
case JOBS_PRINT_COMMAND:
{
if( header )
{
/*
Print table header before first job
*/
sb_append( sb_out, _( L"Command\n" ));
}
for( p=j->first_process; p; p=p->next )
{
sb_printf( sb_out, L"%ls\n", p->argv[0] );
}
break;
}
}
}
/**
The jobs builtin. Used fopr printing running jobs. Defined in builtin_jobs.c.
*/
static int builtin_jobs( wchar_t **argv )
{
int argc=0;
int found=0;
int mode=JOBS_DEFAULT;
int print_last = 0;
job_t *j;
argc = builtin_count_args( argv );
woptind=0;
while( 1 )
{
const static struct woption
long_options[] =
{
{
L"pid", no_argument, 0, 'p'
}
,
{
L"command", no_argument, 0, 'c'
}
,
{
L"group", no_argument, 0, 'g'
}
,
{
L"last", no_argument, 0, 'l'
}
,
{
L"help", no_argument, 0, 'h'
}
,
{
0, 0, 0, 0
}
}
;
int opt_index = 0;
int opt = wgetopt_long( argc,
argv,
L"pclgh",
long_options,
&opt_index );
if( opt == -1 )
break;
switch( opt )
{
case 0:
if(long_options[opt_index].flag != 0)
break;
sb_printf( sb_err,
BUILTIN_ERR_UNKNOWN,
argv[0],
long_options[opt_index].name );
builtin_print_help( argv[0], sb_err );
return 1;
case 'p':
mode=JOBS_PRINT_PID;
break;
case 'c':
mode=JOBS_PRINT_COMMAND;
break;
case 'g':
mode=JOBS_PRINT_GROUP;
break;
case 'l':
{
print_last = 1;
break;
}
case 'h':
builtin_print_help( argv[0], sb_out );
return 0;
case '?':
builtin_unknown_option( argv[0], argv[woptind-1] );
return 1;
}
}
/*
Do not babble if not interactive
*/
if( builtin_out_redirect )
{
found=1;
}
if( print_last )
{
/*
Ignore unconstructed jobs, i.e. ourself.
*/
for( j=first_job; j; j=j->next )
{
if( (j->flags & JOB_CONSTRUCTED) && !job_is_completed(j) )
{
builtin_jobs_print( j, mode, !found );
return 0;
}
}
}
else
{
if( woptind < argc )
{
int i;
found = 1;
for( i=woptind; i<argc; i++ )
{
long pid;
wchar_t *end;
errno=0;
pid=wcstol( argv[i], &end, 10 );
if( errno || *end )
{
sb_printf( sb_err,
_( L"%ls: '%ls' is not a job\n" ),
argv[0],
argv[i] );
return 1;
}
j = job_get_from_pid( pid );
if( j && !job_is_completed( j ) )
{
builtin_jobs_print( j, mode, !found );
}
else
{
sb_printf( sb_err,
_( L"%ls: No suitable job: %d\n" ),
argv[0],
pid );
return 1;
}
}
}
else
{
for( j= first_job; j; j=j->next )
{
/*
Ignore unconstructed jobs, i.e. ourself.
*/
if( (j->flags & JOB_CONSTRUCTED) && !job_is_completed(j) )
{
builtin_jobs_print( j, mode, !found );
found = 1;
}
}
}
}
if( !found )
{
sb_printf( sb_out,
_( L"%ls: There are no jobs\n" ),
argv[0] );
}
return 0;
}
Jump to Line
Something went wrong with that request. Please try again.