interrupt service routine
[/ˌɪn.tə.ˈrʌpt ˈsɜr.vɪs ruːˈtin/]
nounpl: interrupt service routines
rotina de atendimento de interrupção
1. A special block of code in a computer program that is executed in response to a specific interrupt signal from hardware or software, allowing the processor to handle urgent tasks without waiting for the main program to finish
The interrupt service routine handles timer interrupts by updating the system clock every millisecond.
A rotina de atendimento de interrupção processa as interrupções do temporizador atualizando o relógio do sistema a cada milissegundo.
2. In operating systems and embedded systems, a procedure that responds to an interrupt request and determines the appropriate action to take
The keyboard interrupt service routine reads the key press and adds it to the input buffer.
A rotina de atendimento de interrupção do teclado lê a tecla pressionada e a adiciona ao buffer de entrada.
This is specialized technical terminology primarily used in computer science, embedded systems, and systems programming education and practice. The term is used identically in both American English and Brazilian Portuguese technical communities, often abbreviated as ISR in both languages. Understanding interrupt service routines is fundamental to low-level systems programming and real-time operating systems, particularly in courses and professional environments dealing with microcontroller programming and kernel development.
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