search for: waitproc

...V doesn't have a non-blocking wait system call. It does - * have a SIGCLD signal that is sent to a process when one of it's - * children dies. The obvious way to use SIGCLD would be to install - * a handler for SIGCLD which simply bumped a counter when a SIGCLD - * was received, and have waitproc bump another counter when it got - * the status of a process. Waitproc would then know that a wait - * system call would not block if the two counters were different. - * This approach doesn't work because if a process has children that - * have not been waited for, System V will send it a SIG...

...ld(jp, n, FORK_FG); + sigclearmask(); + shellexec(argv, path, idx); + /* NOTREACHED */ + } + + vforked = 0; + sigclearmask(); + forkparent(jp, n, FORK_FG, pid); + + return jp; +} + /* * Wait for job to finish. * @@ -1105,7 +1152,7 @@ static int dowait(int block, struct job *jp) STATIC int waitproc(int block, int *status) { - sigset_t mask, oldmask; + sigset_t oldmask; int flags = block == DOWAIT_BLOCK ? 0 : WNOHANG; int err; @@ -1119,8 +1166,7 @@ waitproc(int block, int *status) if (err || (err = -!block)) break; - sigfillset(&mask); - sigprocmask(SIG_SETMASK, &mask...

...ions(+), 9 deletions(-) diff --git a/usr/dash/jobs.c b/usr/dash/jobs.c index 5e080f6a..a2602bae 100644 --- a/usr/dash/jobs.c +++ b/usr/dash/jobs.c @@ -647,7 +647,7 @@ out: return retval; sigout: - retval = 128 + pendingsigs; + retval = 128 + pending_sig; goto out; } @@ -1146,7 +1146,7 @@ waitproc(int block, int *status) sigfillset(&mask); sigprocmask(SIG_SETMASK, &mask, &oldmask); - while (!gotsigchld && !pendingsigs) + while (!gotsigchld && !pending_sig) sigsuspend(&oldmask); sigclearmask(); diff --git a/usr/dash/miscbltin.c b/usr/dash/mis...

...ions(+), 9 deletions(-) diff --git a/usr/dash/jobs.c b/usr/dash/jobs.c index c1f9688f..333a2a22 100644 --- a/usr/dash/jobs.c +++ b/usr/dash/jobs.c @@ -647,7 +647,7 @@ out: return retval; sigout: - retval = 128 + pendingsigs; + retval = 128 + pending_sig; goto out; } @@ -1146,7 +1146,7 @@ waitproc(int block, int *status) sigfillset(&mask); sigprocmask(SIG_SETMASK, &mask, &oldmask); - while (!gotsigchld && !pendingsigs) + while (!gotsigchld && !pending_sig) sigsuspend(&oldmask); sigclearmask(); diff --git a/usr/dash/miscbltin.c b/usr/dash/mis...