These locks provide basic reader-writer type functionality and may be held by a
sleeping process. Currently they are backed by lockmgr(9).
Table 2-2. Shared Exclusive Lock List
| Variable Name | 
Protectees | 
allproc_lock | 
	 allproc 	 zombproc 	 pidhashtbl 	 proc.p_list 	 proc.p_hash 	 nextpid 	 | 
proctree_lock | 
	 proc.p_children 	 proc.p_sibling 	 |