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9pserve: fix a new race involving assert(c->nmsg == 0).

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Just like outputthread can have processed the message
but not yet called msgput, the same is true of the
connoutthread, so we cannot check c->nmsg until
after the connoutthread has shut down gracefully.
This commit is contained in:
Russ Cox 2007-08-22 09:14:25 -04:00
parent ebda53e16b
commit 4a6f051073
1 changed files with 3 additions and 3 deletions
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6
src/cmd/9pserve.c
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@ -560,13 +560,13 @@ connthread(void *arg)
sendq(outq, &sync);
recvp(c->outqdead);
/* should be no messages left anywhere. */
assert(c->nmsg == 0);
/* everything is quiet; can close the local output queue. */
sendq(c->outq, nil);
recvp(c->outqdead);
/* should be no messages left anywhere. */
assert(c->nmsg == 0);
/* clunk all outstanding fids */
for(i=0; i<NHASH; i++){
for(h=c->fid[i]; h; h=hnext){