/* ARGSUSED */
static void
j_sigchld(int sig)
{
int errno_ = errno;
Job *j;
Proc *p = NULL;
int pid;
int status;
struct rusage ru0, ru1;
/* Don't wait for any processes if a job is partially started.
* This is so we don't do away with the process group leader
* before all the processes in a pipe line are started (so the
* setpgid() won't fail)
*/
for (j = job_list; j; j = j->next)
if (j->ppid == procpid && !(j->flags & JF_STARTED)) {
held_sigchld = 1;
goto finished;
}
getrusage(RUSAGE_CHILDREN, &ru0);
do {
pid = waitpid(-1, &status, (WNOHANG|WUNTRACED));
if (pid <= 0) /* return if would block (0) ... */
break; /* ... or no children or interrupted (-1) */
getrusage(RUSAGE_CHILDREN, &ru1);
/* find job and process structures for this pid */
for (j = job_list; j != (Job *) 0; j = j->next)
for (p = j->proc_list; p != (Proc *) 0; p = p->next)
if (p->pid == pid)
goto found;
found:
if (j == (Job *) 0) {
/* Can occur if process has kids, then execs shell
warningf(true, "bad process waited for (pid = %d)",
pid);
*/
ru0 = ru1;
continue;
}
(void)timeradd(&j->usrtime, &ru1.ru_utime, &j->usrtime);
(void)timersub(&j->usrtime, &ru0.ru_utime, &j->usrtime);
(void)timeradd(&j->systime, &ru1.ru_stime, &j->systime);
(void)timersub(&j->systime, &ru0.ru_stime, &j->systime);
ru0 = ru1;
p->status = status;
#ifdef JOBS
if (WIFSTOPPED(status))
p->state = PSTOPPED;
else
#endif /* JOBS */
if (WIFSIGNALED(status))
p->state = PSIGNALLED;
else
p->state = PEXITED;
check_job(j); /* check to see if entire job is done */
} while (1);
finished:
errno = errno_;
}
/* SIGCHLD handler to reap children and update job states
*
* If jobs are compiled in then this routine expects sigchld to be blocked.
*/
static void
j_sigchld(int sig)
{
int errno_ = errno;
Job *j;
Proc *p = 0;
int pid;
WAIT_T status;
struct tms t0, t1;
/* Don't wait for any processes if a job is partially started.
* This is so we don't do away with the process group leader
* before all the processes in a pipe line are started (so the
* setpgid() won't fail)
*/
for (j = job_list; j; j = j->next)
if (j->ppid == procpid && !(j->flags & JF_STARTED)) {
held_sigchld = 1;
return;
}
ksh_times(&t0);
do {
pid = wait(&status);
if (pid <= 0) /* return if would block (0) ... */
break; /* ... or no children or interrupted (-1) */
ksh_times(&t1);
/* find job and process structures for this pid */
for (j = job_list; j != (Job *) 0; j = j->next)
for (p = j->proc_list; p != (Proc *) 0; p = p->next)
if (p->pid == pid)
goto found;
found:
if (j == (Job *) 0) {
/* Can occur if process has kids, then execs shell
warningf(true, "bad process waited for (pid = %d)",
pid);
*/
t0 = t1;
continue;
}
j->usrtime += t1.tms_cutime - t0.tms_cutime;
j->systime += t1.tms_cstime - t0.tms_cstime;
t0 = t1;
p->status = status;
if (WIFSIGNALED(status))
p->state = PSIGNALLED;
else
p->state = PEXITED;
check_job(j); /* check to see if entire job is done */
}
while (0);
errno = errno_;
}
