Hauv computer science, semaphore yog hom ntaub ntawv sib txawv lossis paub daws teeb meem siv los tswj kev nkag mus rau cov peev txheej los ntawm ntau cov txheej txheem thiab zam cov teeb meem tseem ceeb hauv ib qho kev sib koom ua ke xws li kev ua haujlwm ntau yam.
Lub hom phiaj ntawm semaphores yog dab tsi?
A semaphore yog qhov sib txawv ntawm cov lej sib txawv, sib koom ntawm ntau cov txheej txheem. Lub hom phiaj tseem ceeb ntawm kev siv semaphore yog txheej txheem synchronization thiab nkag mus rau kev tswj hwm rau cov peev txheej hauv ib puag ncig ib puag ncig. Tus nqi pib ntawm semaphore nyob ntawm qhov teeb meem ntawm tes.
semaphore yog dab tsi thiab vim li cas koj thiaj siv ib?
Semaphore tsuas yog qhov sib txawv uas tsis yog qhov tsis zoo thiab sib koom ntawm cov xov. Qhov kev sib txawv no yog siv los daws qhov teeb meem ntu tseem ceeb thiab kom ua tiav cov txheej txheem synchronization hauv ntau qhov chaw ua haujlwmSemaphores yog ob hom: Binary Semaphore - Qhov no tseem hu ua mutex xauv.
Thaum twg koj yuav siv tus piv txwv semaphore?
General semaphores yog siv rau " suav" cov haujlwmxws li tsim thaj chaw tseem ceeb uas tso cai rau tus lej xov tooj nkag. Piv txwv li, yog tias koj xav tau ntau tshaj plaub txoj hauv kev tuaj yeem nkag mus rau ib ntu, koj tuaj yeem tiv thaiv nws nrog semaphore thiab pib qhov semaphore mus rau plaub.
peb hom semaphores yog dab tsi?
Muaj 3 hom semaphores uas yog Binary, suav thiab Mutex semaphore.
