SACL (system access control list)
A part of the Windows NT security descriptor for an object, used to maintain per object auditing information. See also security descriptor, ACE, and ACL.
A data structure used to hold per-object security information, including the object’s owner, group, protection attributes, and audit information. See also ACE, ACL, SACL, and SID.
A value, unique across time and space, that identifies a process in the Security system. SIDs can either identify an individual process, usually containing a user’s logon identifier, or a group of processes.
SMP machine (symmetric multiprocessor machine)
See multiprocessor machine.
SNAP (sub-network access protocol)
SONIC (systems-oriented network interface controller)
SONIC or Sonic
A spin lock is a low-level, synchronization mechanism defined by the Windows NT Kernel. A driver or any other kernel-mode component that runs at raised IRQL can use a spin lock to synchronize access to a shared resource, particularly in a multiprocessor machine.
When one routine holds a spin lock, a second routine running on another processor cannot access the resource protected by that spin lock until it acquires the lock. While a routine attempts to acquire a spin lock, it cannot carry out other operations (it spins) until the lock has been acquired.
Operations involving system-defined spin locks are IRQL-specific to help prevent deadlocks: an interrupt spin lock can only be acquired while executing at a DIRQL of the associated interrupt object(s); an executive spin lock can only be acquired while executing at the highest IRQL (usually DISPATCH_LEVEL) of any routine that can acquire that executive spin lock.
A network communication environment based on UNIX STREAMS. Windows NT STREAMS facilitates the porting of existing stream transport drivers to Windows NT.
System V, Release 4 (UNIX).