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| author | tanimura <tanimura@FreeBSD.org> | 2002-02-23 11:12:57 +0000 |
|---|---|---|
| committer | tanimura <tanimura@FreeBSD.org> | 2002-02-23 11:12:57 +0000 |
| commit | a09da298590e8c11ebafa37f79e0046814665237 (patch) | |
| tree | 2289c653c0f7aa23498f82b603c33107952652ec /sys/coda | |
| parent | 33e8ee5265ca2838260ab581a9cebdedb1e1e29b (diff) | |
| download | FreeBSD-src-a09da298590e8c11ebafa37f79e0046814665237.zip FreeBSD-src-a09da298590e8c11ebafa37f79e0046814665237.tar.gz | |
Lock struct pgrp, session and sigio.
New locks are:
- pgrpsess_lock which locks the whole pgrps and sessions,
- pg_mtx which protects the pgrp members, and
- s_mtx which protects the session members.
Please refer to sys/proc.h for the coverage of these locks.
Changes on the pgrp/session interface:
- pgfind() needs the pgrpsess_lock held.
- The caller of enterpgrp() is responsible to allocate a new pgrp and
session.
- Call enterthispgrp() in order to enter an existing pgrp.
- pgsignal() requires a pgrp lock held.
Reviewed by: jhb, alfred
Tested on: cvsup.jp.FreeBSD.org
(which is a quad-CPU machine running -current)
Diffstat (limited to 'sys/coda')
| -rw-r--r-- | sys/coda/coda_venus.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/sys/coda/coda_venus.c b/sys/coda/coda_venus.c index 022009e..e223617 100644 --- a/sys/coda/coda_venus.c +++ b/sys/coda/coda_venus.c @@ -94,13 +94,11 @@ #define INIT_IN(in, op, ident, p) \ (in)->opcode = (op); \ - if (p) \ - PROC_LOCK(p); \ + PGRPSESS_SLOCK(); \ (in)->pid = p ? p->p_pid : -1; \ (in)->pgid = p ? p->p_pgid : -1; \ (in)->sid = (p && p->p_session && p->p_session->s_leader) ? (p->p_session->s_leader->p_pid) : -1; \ - if (p) \ - PROC_UNLOCK(p); \ + PGRPSESS_SUNLOCK(); \ if (ident != NOCRED) { \ (in)->cred.cr_uid = ident->cr_uid; \ (in)->cred.cr_groupid = ident->cr_gid; \ |
