Kodi zenizeni nthawi opaleshoni dongosolo?

ndi chimene kachitidwe zikugwira ntchito kwa nthawi yeniyeni? Samalani kuphunzira zambiri za RTOS. Choyamba, ndi mitundu wapadera wa kachitidwe opaleshoni, amene amasiyana dongosolo generic opaleshoni kuchitila ake ndi liwiro mu zochitika koipa. Pali mfundo zambiri zosonyeza limatchula:

- RTOS - dongosolo kuti akhoza kupereka zina zofunikla pa nyengo zina za nthawi;

- zenizeni nthawi dongosolo, amene amakhala ndi wokonzeka nthawi zonse, ndi processing wa nkhani kuonekera kwa owerenga;

- "dongosolo kudya", umene umabwera patsogolo osati Poyankha nthawi RTOS, ndi nthawi yokwanira ntchito ndi ntchito.

Chifukwa chokwanira, ndi bwino powasamalira makhalidwe kachitidwe opaleshoni zenizeni nthawi. Mbali yofunika kwambiri amayenda ndi yankho khola kuti zochitika. Ntchito mlingo uliwonse (mkulu ndi otsika patsogolo) sayenera kulowerera ndi mzake ndi aithamangitse mzake. The mkulu mlingo wa amafuna kuti ayankhe nthawi chochitika achindunji pompopompo.

Mitundu ya opaleshoni dongosolo la pompopompo

Gawani malinga ndi mapulogalamu: okhwima (zovuta), zofewa (zofewa) ndi zokambirana. Kuona mwachidule mtundu uliwonse.

RTOS zovuta ndi bwino chimatanthauza Poyankha nthawi mwambowu mu nthawi yeniyeni. Chitsanzo: hardware ndi akulankhula, ulamuliro anasonyeza malamulo kukonzedwa kwa nthawi inayake, monga amapezeka 100% ya milandu.

Zofewa machitidwe zenizeni nthawi kulola 80-90% ya milandu kuti asasiye malire enieni nthawi ndi kuti wina. Koma ambiri Chofunika, kuchedwa amenewa sanali ndi zotsatira mpaka kalekale.

Zogwiritsa RTOS monga chinthu anthu (pamene munthu akuyembekezera ayankhe dongosolo pambuyo malangizo kapena malamulo kwa iwo).

Wotchuka kwambiri kachitidwe opaleshoni zenizeni nthawi ndi makhalidwe awo

Ambiri RTOS - gated ndi za iwo ndi kovuta kupeza mumve zambiri. kampani zachitika WindRiver Systems VxWorks (molimba RTOS) kwa ophatikizidwa mapulogalamu chitukuko pa PC. Bukuli lili pa khamu computer, amene adaperekeza chitukuko cha pulogalamu, ndi kompyuta kasitomala, kumene ntchito m'manja VxWorks.

Izi zenizeni nthawi opaleshoni dongosolo - shirokonastraivaemye, koma zigawo mapulogalamu sangathe ntchito mu malo osiyana, zomwe zimachititsa iwo okha kwambiri ntchito. Ubwino monga:

- malire nambala ya ntchito.

- The nambala ya zofunika - kwa 256.

- Ntchito ndi ndandanda cyclically kapena patsogolo.

- semaphores, zomwe zimathandiza kusamalira dongosolo chuma yovuta.

Realtime opaleshoni dongosolo QNX Neutrino Realtime ntchito System - ndi brainchild wa kampani QNX mapulogalamu Systems. Bukuli lili zomangamanga mtanda Seva ndipo amakhala ndi lalikulu Mipikisano tasking ku mode patsogolo. Aliyense mchitidwe dongosolo ntchito paokha: wagawo aliyense akhoza mosadalira kuti restarted ndi ndi zolephera popanda okhudza ntchito phata kapena zigawo zina. Lilinso kwambiri kasinthidwe anamanga ku phata zofunika, amene kumatha ntchito chilengedwe china.

ChorusOS ndi chitsanzo cha ophatikizidwa opaleshoni dongosolo, amene chimagwiritsidwa ntchito kutumiza mauthenga. Iwo amathandiza zosiyanasiyana ndondomeko telefoni, Java-luso, zimene zimathandiza kukhazikitsa zinthu zatsopano ndi ntchito.

Mosiyana Os ndi cholinga wamba

RTOS amasiyana machitidwe onse omwe cholinga, deterministic mtundu wa ntchito, chimene chiri chifukwa ziyang'aniridwe ndi nthawi yaikulu pa ntchito processing. Lingaliro la "determinacy" akufotokoza predefined nthawi imeneyi, imene anachita pulogalamu zenizeni nthawi.