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Allow assert that the current thread does not hold the sx(9) lock.

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Reviewed by:		jhb
In cooperation with:	juli, jhb
Approved by:		jhb, scottl (mentor)
This commit is contained in:
Pawel Jakub Dawidek 2004-02-04 08:14:58 +00:00
parent 2ccbe4b596
commit 19b0efd32d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=125421
1 changed files with 11 additions and 0 deletions
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11
sys/kern/kern_sx.c
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@ -344,6 +344,17 @@ _sx_assert(struct sx *sx, int what, const char *file, int line)
sx->sx_object.lo_name, file, line);
mtx_unlock(sx->sx_lock);
break;
case SX_UNLOCKED:
#ifdef WITNESS
witness_assert(&sx->sx_object, what, file, line);
#else
mtx_lock(sx->sx_lock);
if (sx->sx_cnt != 0 && sx->sx_xholder == curthread)
printf("Lock %s locked @ %s:%d\n",
sx->sx_object.lo_name, file, line);
mtx_unlock(sx->sx_lock);
#endif
break;
default:
panic("Unknown sx lock assertion: %d @ %s:%d", what, file,
line);