Yintoni i-time real system yokusebenza?

Yintoni na nokuqhuba iinkqubo of time real? Nikelani ingqalelo isifundo oluneenkcukacha RTOS. Okokuqala, ukuba iintlobo ezikhethekileyo iinkqubo zokusebenza, eziya kwahluka ozingenelayo kwinkqubo yokusebenza ngomsebenzi wayo nesantya ngxaki zinzima. Kukho izinto ezininzi ezivelisa nkcukacha:

- RTOS - inkqubo iyakwazi ukunikezela iinkonzo eziyimfuneko kangangexesha elithile;

- real-yexesha, esibonakala ngokuba rhoqo intumekelelo, kunye nokusingatha ulwazi kusabonakala kubasebenzisi;

- "inkqubo fast", nto leyo eza kwindawo yokuqala hayi ixesha lokuphendula RTOS, kunye nexesha elaneleyo ukuba azisebenzi nge-aplikeshini.

Kuba ukuphelela, kubalulekile ukunikela ingqalelo kwiimpawu lweenkqubo zokusebenza-time. Eyona nto ibalulekileyo liqinisekisiwe kwaye impendulo esitalini neziganeko. Imisebenzi naliphi na inqanaba (kuqala nezisezantsi) akufuneki angqamane enye nenye kwaye susa omnye nomnye. Inqanaba eliphezulu kweemfuneko ixesha ukuphendula isiganeko esithile ngexesha lenene.

Iintlobo operating system of time real

Yahlula ngokuvisisana iinkqubo: ngqongqo (nzima), ithambile (athambileyo) kunye interactive. A ngamafuphi uhlobo ngalunye.

RTOS onzima ixesha lokuphendula ezicaciswe kakuhle isiganeko ngexesha lenene. Umzekelo: ukuphazamisa yentsimbi, Ulothetha ulawulo ukubonisa ukuba lumakishwe ukuba ngexesha elithile, apho kwenzeka ntoni kwi-100% yamatyala.

Iinkqubo-time real Soft ukuvumela 80-90% kwezi meko ukuba ziphambuke kwesona ixesha elithile ngokomyalelo mnye. Kodwa okona kubaluleke kakhulu, aba kulibaziseka zange kube nemiphumela noqhekeko.

RTOS Interactive zibandakanya nemeko yomntu (xa umntu elindele impendulo evela kwinkqubo emva imiyalelo okanye imiyalelo enikwe kuzo).

Iinkqubo zokusebenza-time real ithandwa kunye neempawu zazo

RTOS ezininzi - hlwele kwaye ngazo kunzima ukufumana ulwazi. Le nkampani iye yaphuhliswa WindRiver Systems VxWorks (nzima RTOS) ukuphuhlisa software ekufakweni PC. Oku kusekelwe umkhosi computer, apho waqhuba uphuhliso software, kunye ikhompyutha encedwayo, apho isetyenziswa phantsi kolawulo VxWorks.

Ezi yokusebenza-time real - shirokonastraivaemye, kodwa iminqongo software ayinakusetyenziswa kwindawo ezahlukeneyo, nto leyo ebenza kakhulu kulinganiselwe ukusetyenziswa. Izibonelelo ziquka:

- Inani Unlimited lemisebenzi.

- Inani ephambili - ukuya 256.

- Imisebenzi zicwangciselwe cyclically okanye ngokokubaluleka.

- semaphores, ezinceda ukulawula izibonelelo inkqubo ebalulekileyo.

ixesha lenene inkqubo yokusebenza QNX Neutrino Operating System lokwenyani - ngumqondo yenkampani QNX Software Systems. Oku kusekelwe cross-server ngezakhiwo kwaye lubonakala ngokuba enkulu multi-tasking ukuya kwindlela kuqala. isiqalelo ngasinye le nkqubo isebenza ngokuzimeleyo: nayiphi iyunithi na ngokuzimeleyo iqaliswe amaphutha nokungaphumeleli ngaphandle kokuchaphazela ukusebenza isiqalo okanye namanye amacandelo. Kwakhona unalo loqwalaselo bophelela nenzulu ngumongo ezingundoqo, nto leyo ishenxisa umsebenzi kwenye indawo.

ChorusOS ngumzekelo kwenkqubo yokusebenza olungisiweyo, leyo ngokubanzi asetyenziswe ngocingo. Ixhasa iintlobo ye applet thethwano lomnxeba, Java-nobuchwepheshe, nto leyo evumela ukuqaliswa ezintsha kunye izicelo.

Ngokungafaniyo OS nenjongo efanayo

RTOS systems kwahluka jikelele injongo deterministic uhlobo lomsebenzi, apho kungenxa ngqongqo nokulawulwa yexesha ekwenzeni imisebenzi. Le mbono "determinacy" ichaza ixesha lekhefu kwesichazwe kuqala, apho wenza inkqubo-time.