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Code Issues Releases Activity

- Handle the recursed/not recursed flags with RA_RLOCKED in rw_assert().

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- Tweak a panic message.
This commit is contained in:
John Baldwin 2013-06-03 17:38:57 +00:00
parent d39116f5d5
commit 95d28652af
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=251323
1 changed files with 6 additions and 4 deletions
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10
sys/kern/kern_rwlock.c
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@ -371,7 +371,7 @@ __rw_rlock(volatile uintptr_t *c, const char *file, int line)
KASSERT(rw->rw_lock != RW_DESTROYED,
("rw_rlock() of destroyed rwlock @ %s:%d", file, line));
KASSERT(rw_wowner(rw) != curthread,
("%s (%s): wlock already held @ %s:%d", __func__,
("rw_rlock: wlock already held for %s @ %s:%d",
rw->lock_object.lo_name, file, line));
WITNESS_CHECKORDER(&rw->lock_object, LOP_NEWORDER, file, line, NULL);
@ -1124,6 +1124,8 @@ __rw_assert(const volatile uintptr_t *c, int what, const char *file, int line)
case RA_LOCKED | RA_RECURSED:
case RA_LOCKED | RA_NOTRECURSED:
case RA_RLOCKED:
case RA_RLOCKED | RA_RECURSED:
case RA_RLOCKED | RA_NOTRECURSED:
#ifdef WITNESS
witness_assert(&rw->lock_object, what, file, line);
#else
@ -1133,13 +1135,13 @@ __rw_assert(const volatile uintptr_t *c, int what, const char *file, int line)
* has a lock at all, fail.
*/
if (rw->rw_lock == RW_UNLOCKED ||
(!(rw->rw_lock & RW_LOCK_READ) && (what == RA_RLOCKED ||
(!(rw->rw_lock & RW_LOCK_READ) && (what & RA_RLOCKED ||
rw_wowner(rw) != curthread)))
panic("Lock %s not %slocked @ %s:%d\n",
rw->lock_object.lo_name, (what == RA_RLOCKED) ?
rw->lock_object.lo_name, (what & RA_RLOCKED) ?
"read " : "", file, line);
if (!(rw->rw_lock & RW_LOCK_READ)) {
if (!(rw->rw_lock & RW_LOCK_READ) && !(what & RA_RLOCKED)) {
if (rw_recursed(rw)) {
if (what & RA_NOTRECURSED)
panic("Lock %s recursed @ %s:%d\n",