priority interrupt

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• Interrupt handler — An interrupt handler, also known as an interrupt service routine (ISR), is a callback subroutine in an operating system or device driver whose execution is triggered by the reception of an interrupt. Interrupt handlers have a multitude of… …   Wikipedia

• Interrupt — This article is about computer interrupts. For the study of the effect of disruptions on job performance, see Interruption science. In computing, an interrupt is an asynchronous signal indicating the need for attention or a synchronous event in… …   Wikipedia

• Interrupt priority level — The interrupt priority level (IPL) is a part of the current system interrupt state, which indicates the interrupt requests that will currently be accepted. The IPL may be indicated in hardware by the registers in a Programmable Interrupt… …   Wikipedia

• Priority inversion — In scheduling, priority inversion is the scenario where a low priority task holds a shared resource that is required by a high priority task. This causes the execution of the high priority task to be blocked until the low priority task has… …   Wikipedia

• Interrupt latency — In Realtime Operating Systems, Interrupt latency is the time between the generation of an interrupt by a device and the servicing of the device which generated the interrupt. For many operating systems, devices are serviced as soon as the device… …   Wikipedia

• Interrupt request — IRQ redirects here. For the country with the ISO 3166 1 country code, see Iraq. The computing phrase interrupt request (or IRQ) is used to refer to either the act of interrupting the bus lines used to signal an interrupt, or the interrupt input… …   Wikipedia

• interrupt controller —    A chip used to process and prioritize hardware interrupts. In the PC, a programmable interrupt controller responds to each hardware interrupt, assigns a priority, and forwards it to the main processor.    See also interrupt request …   Dictionary of networking

• priority — /praɪˈɒrəti / (say pruy oruhtee) noun (plural priorities) 1. the state of being earlier in time, or of preceding something else. 2. precedence in order, rank, etc. 3. the having of certain rights before another. 4. Computers the position in rank… …  

• Programmable Interrupt Controller — A Programmable Interrupt Controller (PIC) is a device which allows priority levels to be assigned to its interrupt outputs. When the device has multiple interrupt outputs to assert, it will assert them in the order of their relative priority.… …   Wikipedia

• Advanced Programmable Interrupt Controller — In computing, an Advanced Programmable Interrupt Controller (APIC) is a more complex Programmable Interrupt Controller (PIC) than Intel s original types such as the 8259A. APIC devices permit more complex priority models, and Advanced IRQ… …   Wikipedia

• End of interrupt — An End Of Interrupt (EOI) is a signal sent to a Programmable Interrupt Controller (PIC) to indicate the completion of interrupt processing for a given interrupt. An EOI is used to cause a PIC to clear the corresponding bit in the In Service… …   Wikipedia