Lockl Locks
Lockl locks are exclusive-access and recursive locks.
Note: Lockl locks (previously called conventional locks) are only
provided to ensure compatibility with existing code. New code should
use simple or complex locks.
The lockl lock kernel services are:
A thread which tries to acquire a busy lockl lock sleeps immediately.
The lock word of a lockl lock must be located in pinned memory if the lockl service is called with interrupts disabled.