interrupt


Also found in: Dictionary, Thesaurus, Medical, Legal, Acronyms, Wikipedia.
Related to interrupt: Interrupt service routine

interrupt

the signal to initiate the stopping of the running of one computer program in order to run another, after which the running of the original program is usually continued

interrupt

[′int·ə‚rəpt]
(computer science)
To stop a running program in such a way that it can be resumed at a later time, and in the meanwhile permit some other action to be performed.
The action of such a stoppage.

interrupt

(programming)
1. An asynchronous event that suspends normal processing and temporarily diverts the flow of control through an "interrupt handler" routine.

Interrupts may be caused by both hardware (I/O, timer, machine check) and software (supervisor, system call or trap instruction).

In general the computer responds to an interrupt by storing the information about the current state of the running program; storing information to identify the source of the interrupt; and invoking a first-level interrupt handler. This is usually a kernel level privileged process that can discover the precise cause of the interrupt (e.g. if several devices share one interrupt) and what must be done to keep operating system tables (such as the process table) updated. This first-level handler may then call another handler, e.g. one associated with the particular device which generated the interrupt.

2. Under MS-DOS, nearly synonymous with "system call" because the OS and BIOS routines are both called using the INT instruction (see interrupt list) and because programmers so often have to bypass the operating system (going directly to a BIOS interrupt) to get reasonable performance.

interrupt

A signal that gets the attention of the CPU and is usually generated when I/O is required. For example, hardware interrupts are generated when a key is pressed or when the mouse is moved. Software interrupts are generated by a program requiring disk input or output.

An internal timer may continually interrupt the computer several times per second to keep the time of day current or for timesharing purposes.

When an interrupt occurs, control is transferred to the operating system, which determines the action to be taken. Interrupts are prioritized; the higher the priority, the faster the interrupt will be serviced.
References in periodicals archive ?
However, it does not explain about optimizing it to achieve specific throughput on receiving transmission and/or the minimization of interrupt generation based on specific transmission size.
2 HZ cut-off frequency for INT1 (AOI1) interrupt generation only.
While incarceration does, in the immediate sense, often succeed in interrupting the injurious activities of the incarcerated, it also interrupts the continuation or assumption of many activities that are beneficial to society.
Although increased interrupt handling speed is the feature key to high-speed operation of the UEI cards.
What factors could interrupt activities or be costly as a result of laws and regulations?
Tasks performed at interrupt level, by definition, have absolute priority over all other tasks.
More details on INTERRUPT MEDIA and their research reports can be found at http://marketpublishers.
In architectures with a small number of registers, such as the PIC16F, the OCG compiler knows exactly which registers will be used for every interrupt in the program.
For example, a cache read operation requires only a single interrupt to process, and performance in the range of 18,000 to 40,000 IOPS per port is typically achieved.
The toxin also interrupts the same signaling cascade in dendritic cells, another class of immune cells, Bali Pulendran of the Emory Vaccine Research Center in Atlanta and his coworkers report in the July 17 Nature.
INTEGRITY delivers maximum responsiveness and determinism by running with interrupts continuously enabled and guaranteeing access to the CPU and memory for critical tasks.
The compiler's contribution to interrupt latency is in the number of registers it saves in response to an interrupt, or the context.