翻訳と辞書
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・ internex on-line
・ internic
・ interoperability
・ interoperable database
・ interpolation
・ interpress
・ interpreted
・ interpreter
・ interpretive menu processor
・ interrupt
interrupt handler
・ interrupt list
・ interrupt priority level
・ interrupt request
・ interrupts
・ intersil 6100
・ intersil 6120
・ interstitial
・ interupt
・ interviews


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interrupt handler : FOLDOC
interrupt handler
A routine which is executed when an interrupt occurs. Interrupt handlers typically deal with low-level events in the hardware of a computer system such as a character arriving at a serial port or a tick of a {real-time clock}. Special care is required when writing an interrupt handler to ensure that either the interrupt which triggered the handler's execution is masked out (inhibitted) until the handler exits, or the handler is re-entrant so that multiple concurrent invocations will not interfere with each other.
If interrupts are masked then the handler must execute as quickly as possible so that important events are not missed. This is often arranged by splitting the processing associated with the event into "upper" and "lower" halves. The lower part is the interrupt handler which masks out further interrupts as required, checks that the appropriate event has occurred (this may be necessary if several events share the same interrupt), services the interrup


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