Semaphores rau kev sib nrig sib cais yog ib pawg ntawm tag nrho cov semaphores. Lawv siv txhawm rau nkag mus rau cov peev txheej, feem ntau. … Pib tag nrho cov txheej txheem thiab teeb liab lub semaphore ib zaug. Ib qho ntawm cov txheej txheem tos yuav tau mus; ces nws yuav teeb liab lub semaphore, thiab lwm txoj kev tos yuav mus; etc.
Lub semaphore siv kev sib nrig sib cais li cas?
Yuav muab kev sib nrig sib cais rau kev siv cov peev txheej xws li cov npe sib txuas, cov txheej txheem tsim ib lub semaphore uas muaj thawj suav ntawm 1. Ua ntej nkag mus rau cov peev txheej sib koom, cov txheej txheem hu tos ntawm semaphore, thiab hu xov tooj tom qab nws tau nkag mus.
Semaphore siv li cas thaum 2 txheej txheem uas xav tau kev sib nrig sib cais?
Ob tus txheej txheem tuaj yeem siv kev sib nrig sib cais los ntawm kev siv a binary semaphore. Cov seem tseem ceeb yog bracketed los ntawm P(S) thiab V(S). P(S) yog qhov nkag los yog qhib bracket; V(S) yog qhov kev tawm los yog kaw. Rau ob txheej txheem nrog binary semaphore: Yog tias S=1, ces ob txheej txheem tsis ua nws qhov tseem ceeb.
Puas binary semaphore muab kev sib nrig sib cais?
Txawm li cas los xij, Binary Semaphore nruj me ntsis muab kev sib nrig sib cais. Ntawm no, es tsis txhob muaj ntau dua 1 qhov muaj nyob rau hauv ntu tseem ceeb, peb tsuas tuaj yeem muaj ntau tshaj 1 txheej txheem hauv ntu tseem ceeb. Lub semaphore tuaj yeem muaj ob qhov txiaj ntsig xwb, 0 lossis 1. Cia peb saib cov programmingKev siv ntawm Binary Semaphore.
Lub hom phiaj ntawm kev siv semaphore 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.
