Abstract: A method and apparatus are provided for enhanced performance caching for path names. A vnode is built for a root directory and a path name is stored in a path cache for the vnode for the root directory. A second vnode is built for a second directory and a path name is stored in a path cache for the second vnode. When a next vnode is built for a next directory, then a path name is stored in a path cache for the next vnode. For a given vnode, the path name includes an entire path name that leads to the vnode. A given vnode is enabled to return its entire path name in one step, without reverse traversal.

Abstract: A system and method for automatic journaling of objects in a computer file system. A journal directory operation causes a new or existing object to be linked into a directory if the directory has an attribute indicating automatic journaling status. An operating system synchronization lock is acquired before the object is journaled to preserve the object from changes by the operating system, and held in place until after journaling has started.

Abstract: A data queue control submodule supporting a host processor and at least one peripheral device. The submodule includes a memory unit with a first memory portion for storing queue commands associated with each peripheral device and a second memory portion for storing peripheral device data. A queue control unit is also included in the submodule for controlling the flow of data between the peripheral devices and the host processor in accordance with the queue control commands. A port interface connects the queue control unit and the peripheral devices in response to a trigger event. The submodule further includes an event controller in communication with the host processor and the port interface for generating event triggers in response to data demands of either the host processor or the other peripheral devices. The present invention is advantageous in that it simplifies the design of each port interface and provides improved flexibility in the queue structure of the overall control system.

Abstract: A protective eyewear housing supporting a transparent lens. A first end of the housing has a first strap attached thereto and a second opposite end of the first strap has a first clip member attached thereto. A second opposed end of the housing has a first end of a second strap affixed thereto and a second opposite end of the second strap has a second clip member attached thereto. The helmet supports a pair of spaced apart clip housings, and the clip housings are sized to matingly engage with one of the first and second clip members for releasably securing the protective eyewear to the helmet.

Abstract: A collapsible co-dispensing tubular container for separately storing and co-dispensing two extrusible product components of substantially equal viscosity with substantially constant proportionation. The container may comprise a collapsible tubular body, a head fitment having two discharge ports which fitment is sealingly secured in one end of the collapsible body, and a longitudinally extending interior bulkhead disposed to partition the interior of the container into two compartments, one of which compartments is in fluid communication with one of the discharge ports, and the other of the compartments being in fluid communication with the other of the discharge ports. The improvement comprises a pressure responsive moveable septum disposed adjacent the head end of the container and which septum is in fluid communication with both of the compartments in the container.

Abstract: A powder dispenser for gently issuing puffs of relatively low velocity air-entrained powdered material through a discharge port. The dispenser has means for substantially fluidizing a bed of powdered material contained therein with an upward pulse of relatively low velocity, substantially columnar air flow so that some of the powder in the bed of powdered material becomes entrained in and issued from the dispenser by relatively low velocity air. The dispenser may include a foraminous bulkhead which defines the bottom of a powder accommodating chamber, a plenum chamber subjacent the foraminous bulkhead, and means for pumping a volume of air into the plenum chamber so that a pulse of relatively low velocity air flows upward through the foramina of the bulkhead and the bed of powdered material disposed thereon.