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sh: Do not ask for stopped/continued processes if we do not need them

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rather than retrying wait3 if they happen.
This commit is contained in:
Jilles Tjoelker 2012-07-28 15:13:48 +00:00
parent 61fb716ac9
commit fb05913c5d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=238867
1 changed files with 5 additions and 6 deletions
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11
bin/sh/jobs.c
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@ -1025,17 +1025,16 @@ dowait(int block, struct job *job)
TRACE(("dowait(%d) called\n", block));
do {
#if JOBS
wflags = WUNTRACED | WCONTINUED;
#else
wflags = 0;
if (iflag)
wflags = WUNTRACED | WCONTINUED;
else
#endif
wflags = 0;
if (block == 0)
wflags |= WNOHANG;
pid = wait3(&status, wflags, (struct rusage *)NULL);
TRACE(("wait returns %d, status=%d\n", (int)pid, status));
} while ((pid == -1 && errno == EINTR && breakwaitcmd == 0) ||
(pid > 0 && (WIFSTOPPED(status) || WIFCONTINUED(status)) &&
!iflag));
} while (pid == -1 && errno == EINTR && breakwaitcmd == 0);
if (pid == -1 && errno == ECHILD && job != NULL)
job->state = JOBDONE;
if (breakwaitcmd != 0) {