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ash: small size optimization

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function                                             old     new   delta
makejob                                              263     270      +7
setjobctl                                            328     332      +4
jobscmd                                               96      94      -2
stoppedjobs                                           53      50      -3
jobctl                                                 4       1      -3
job_warning                                            4       1      -3
forkshell                                            644     641      -3
cmdloop                                              422     409     -13
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 2/6 up/down: 11/-27)            Total: -16 bytes
   text    data     bss     dec     hex filename
 675392    2740   13968  692100   a8f84 busybox_old
 675380    2740   13968  692088   a8f78 busybox_unstripped
This commit is contained in:
Denis Vlasenko 2007-07-14 18:45:37 +00:00
parent 8fdc4b7b06
commit fcfaf2e18a
1 changed files with 35 additions and 35 deletions
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70
shell/ash.c
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@ -3141,20 +3141,18 @@ struct job {
};
static pid_t backgndpid; /* pid of last background process */
static int job_warning; /* user was warned about stopped jobs */
#if JOBS
static int jobctl; /* true if doing job control */
#endif
static smallint job_warning; /* user was warned about stopped jobs (can be 2, 1 or 0). */
static struct job *makejob(union node *, int);
static int forkshell(struct job *, union node *, int);
static int waitforjob(struct job *);
#if ! JOBS
#define setjobctl(on) /* do nothing */
#if !JOBS
enum { jobctl = 0 };
#define setjobctl(on) do {} while (0)
#else
static smallint jobctl; /* true if doing job control */
static void setjobctl(int);
static void showjobs(FILE *, int);
#endif
/*
@ -3836,32 +3834,6 @@ showjob(FILE *out, struct job *jp, int mode)
}
}
static int
jobscmd(int argc, char **argv)
{
int mode, m;
FILE *out;
mode = 0;
while ((m = nextopt("lp"))) {
if (m == 'l')
mode = SHOW_PID;
else
mode = SHOW_PGID;
}
out = stdout;
argv = argptr;
if (*argv) {
do
showjob(out, getjob(*argv,0), mode);
while (*++argv);
} else
showjobs(out, mode);
return 0;
}
/*
* Print a list of jobs. If "change" is nonzero, only print jobs whose
* statuses have changed since the last call to showjobs.
@ -3878,10 +3850,35 @@ showjobs(FILE *out, int mode)
continue;
for (jp = curjob; jp; jp = jp->prev_job) {
if (!(mode & SHOW_CHANGED) || jp->changed)
if (!(mode & SHOW_CHANGED) || jp->changed) {
showjob(out, jp, mode);
}
}
}
static int
jobscmd(int argc, char **argv)
{
int mode, m;
mode = 0;
while ((m = nextopt("lp"))) {
if (m == 'l')
mode = SHOW_PID;
else
mode = SHOW_PGID;
}
argv = argptr;
if (*argv) {
do
showjob(stdout, getjob(*argv,0), mode);
while (*++argv);
} else
showjobs(stdout, mode);
return 0;
}
#endif /* JOBS */
static int
@ -4043,6 +4040,8 @@ makejob(union node *node, int nprocs)
}
memset(jp, 0, sizeof(*jp));
#if JOBS
/* jp->jobctl is a bitfield.
* "jp->jobctl |= jobctl" likely to give awful code */
if (jobctl)
jp->jobctl = 1;
#endif
@ -10883,7 +10882,8 @@ cmdloop(int top)
}
numeof++;
} else if (nflag == 0) {
job_warning = (job_warning == 2) ? 1 : 0;
/* job_warning can only be 2,1,0. Here 2->1, 1/0->0 */
job_warning >>= 1;
numeof = 0;
evaltree(n, 0);
}