diff options
| author | julian <julian@FreeBSD.org> | 1997-08-13 19:29:33 +0000 |
|---|---|---|
| committer | julian <julian@FreeBSD.org> | 1997-08-13 19:29:33 +0000 |
| commit | 0d371398d74dd205808caafce0fe3b2e440ef9ec (patch) | |
| tree | e6865ca0f445fcaaaf6d02a3ff8d0f6ae7cde653 /sys/kern | |
| parent | cc75a271bab35009c4bb2e3aaa4c81a37c2db9e7 (diff) | |
| download | FreeBSD-src-0d371398d74dd205808caafce0fe3b2e440ef9ec.zip FreeBSD-src-0d371398d74dd205808caafce0fe3b2e440ef9ec.tar.gz | |
add a diagnostic to catch some common cases of tsleep being
called from the wrong place.
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/kern_synch.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/sys/kern/kern_synch.c b/sys/kern/kern_synch.c index 2479c6a4..c96603c 100644 --- a/sys/kern/kern_synch.c +++ b/sys/kern/kern_synch.c @@ -36,7 +36,7 @@ * SUCH DAMAGE. * * @(#)kern_synch.c 8.9 (Berkeley) 5/19/95 - * $Id: kern_synch.c,v 1.32 1997/06/22 16:04:18 peter Exp $ + * $Id: kern_synch.c,v 1.33 1997/08/08 22:48:57 julian Exp $ */ #include "opt_ktrace.h" @@ -349,8 +349,15 @@ tsleep(ident, priority, wmesg, timo) return (0); } #ifdef DIAGNOSTIC + if( p == NULL ) + panic("tsleep1"); if (ident == NULL || p->p_stat != SRUN) panic("tsleep"); + /* XXX This is not exhaustive, just the most common case */ + if ((p->p_procq.tqe_next != NULL) + && (p->p_procq.tqe_next == p->p_procq.tqe_prev) + && (*p->p_procq.tqe_prev == p)) + panic("sleeping process on run queue"); #endif p->p_wchan = ident; p->p_wmesg = wmesg; |
