Abstract: The threads of a user mode process can access various different resources of a computing device, and such access can be serialized. To access a serialized resource, a thread acquires a lock for the resource. For each context switch in the computing device, a module of the operating system kernel checks for priority inversions, which is a situation in which a higher priority thread of the user mode process is waiting for (blocking on) a resource for which a lower priority thread has acquired a lock. In response to detecting such a priority inversion, the priority of the lower priority thread is boosted to allow the priority thread to execute and eventually release the lock that the higher priority thread is waiting for.

Abstract: The threads of a user mode process can access various different resources of a computing device, and such access can be serialized. To access a serialized resource, a thread acquires a lock for the resource. For each context switch in the computing device, a module of the operating system kernel checks for priority inversions, which is a situation in which a higher priority thread of the user mode process is waiting for (blocking on) a resource for which a lower priority thread has acquired a lock. In response to detecting such a priority inversion, the priority of the lower priority thread is boosted to allow the priority thread to execute and eventually release the lock that the higher priority thread is waiting for.

Abstract: A lighting device includes a housing that defines an opening, and light board moveably positioned in the housing adjacent the opening. The light board has a plurality of light modules operable to provide a light output through the opening. The lighting device further includes a motor operatively connected to the light board to move the light board. The lighting device further includes a controller in electrical communication with the motor and the light board. The controller is operable to receive signals from a communication device. The controller is further operable to control the motor to orient the light board. The controller is further operable to control an intensity and a color of the light output of the light modules.

Abstract: A lighting device includes a housing that defines an opening, and light board moveably positioned in the housing adjacent the opening. The light board has a plurality of light modules operable to provide a light output through the opening. The lighting device further includes a motor operatively connected to the light board to move the light board. The lighting device further includes a controller in electrical communication with the motor and the light board. The controller is operable to receive signals from a communication device. The controller is further operable to control the motor to orient the light board. The controller is further operable to control an intensity and a color of the light output of the light modules.