Interrupt management system for deferring low priority interrupts in real-time system
Abstract:
An interrupt management system for managing multiple interrupts includes a timer and an interrupt management sub-system. The interrupt management sub-system receives first and second interrupts, determines the first interrupt to be a real-time interrupt and the second interrupt to be a non-real-time interrupt, initializes the timer for a predetermined time period on reception of the first interrupt, and determines whether the second interrupt is either a maskable or non-maskable interrupt. The interrupt management sub-system transmits the first interrupt to an interrupt controller, en-queues the second interrupt during the predetermined time period, and transmits the second interrupt to the interrupt controller after the predetermined time period when the second interrupt is a maskable interrupt. The interrupt management sub-system transmits the second interrupt to the interrupt controller during the predetermined time period when the second interrupt is a non-maskable interrupt.
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