He aha te mea he pūnaha whakahaere wā-tūturu?

He aha e nga pūnaha whakahaere o te wā tūturu? Kia whai whakaaro ki te ako taipitopito o te RTOs. Tuatahi o te katoa, te reira momo motuhake o ngā pūnaha whakahaere, e rerekē i te pūnaha whakahaere kano mo tona mahi me te tere i roto i te kino ngā āhuatanga. He maha ngā ariā e heheu mai i te pau:

- RTOs - he pūnaha e he taea ki te whakarato i te ratonga e tika ana mo te tetahi wā o te wā;

- pūnaha wā-tūturu, āhuatanga nei i te hihiko tamau, me te tukatuka o ngā mōhiohio kitea ki ngā kaiwhakamahi;

- ki "pūnaha nohopuku", e tae mai ki te mua e kore te wa whakautu RTOs, me te wā nui te mahi ki te tono.

Hoki kakató, ko reira utu aufauraa i te whakarongo ki nga āhuatanga o ngā pūnaha whakahaere wā-tūturu. whai te āhuatanga tino nui te me whakautu pūmau ki ngā kaupapa. Tūmahi kore e tetahi taumata (matua tiketike, me te iti) pokanoa ki ia atu, me te hiki tahi i te tahi. Ko te taumata tiketike o ngā whakaritenga mō te wā urupare ki te hui motuhake i roto i te wā tūturu.

Ngā momo o te pūnaha whakahaere o te wā tūturu

Wehe ratou rite tonu ki te hōtaka: mārō (pakeke), ngohengohe (ngohengohe) me pāhekoheko. He titiro poto i ia momo.

RTOs Hard i te wa whakautu pai-tautuhi mo te kaupapa i roto i te wā tūturu. Tauira: aruaru he pūmārō, whakahau te mana whakaatu ki te tukatuka hoki i te tetahi wa, kia rite puta i roto i te 100% o te wā.

tukua ngohengohe pūnaha wā-tūturu 80-90% o te take ki te afe mei te rohe wa motuhake e kotahi kia. Ko tino nui, kihai i enei roa arahi ki hopearaa tūnguru.

RTOs pāhekoheko ngā tauwehe tangata (ina fakatatali mai te takitahi he whakautu i te pūnaha i muri i ngā tohutohu whakahau ranei hoatu ki a ratou).

Ko te pūnaha whakahaere wā-tūturu tino rongonui, me o ratou āhuatanga

Te nuinga o RTOs - uipa a he uaua e pā ana ki a ratou ki te whiwhi mōhiohio taipitopito. Kua whakawhanakehia e te kamupene WindRiver Systems VxWorks (pakeke RTOs) mō te whanaketanga pūmanawa tāmau i runga i PC. Kei te hāngai te reira i runga i te rorohiko ope, i runga i nei whakahaere te whanaketanga o te pūmanawa, me te rorohiko kiritaki, te wahi e whakamahia ai i raro i te mana VxWorks.

Enei pūnaha wā-tūturu whakahaere - shirokonastraivaemye, engari te kōwae pūmanawa kore e taea te whakamahi i roto i te taiao rerekē, e hanga tino iti ratou i roto i te whakamahi. Hua ngā:

- te maha Unlimited o ngā mahi.

- Ko te maha o ngā kaupapa matua - ki 256.

- Kei te whakaritea Tūmahi cyclically i te matua ranei.

- semaphores, e āwhina i te whakahaere i ngā rauemi pūnaha arohaehae.

pūnaha mahi Onāianei QNX Neutrino Onāianei Pūnaha Whakahaere - te brainchild o te kamupene QNX Pūmanawa Systems. Kei te hāngai te reira i runga i hoahoanga ripeka-tūmau me te āhuatanga e te nui maha-tasking ki te aratau matua. Ia huānga o te pūnaha mahi takitahi: takitahi e taea te tīmata anō i tetahi kōwae ki hape, me ngā rahunga i waho e pā i te mahi o te karihi atu wae ranei. Te reira i te here whirihoranga hohonu ki te karihi taketake, e faaore te mahi i roto i tetahi taiao hoki kua.

ChorusOS Ko te tauira o te pūnaha whakahaere tāmau, Kei te whānui i whakamahia i roto i te torotoro waea. tautoko ana te reira i te momo o ngā kawa torotoro waea, Java-hangarau, e taea ai te whakataki o ngā whanaketanga hou me tono.

Haunga te OS me te whakaaro noa

rerekē RTOs i ngā pūnaha-whakaaro whānui, āhua deterministic o te mahi, i te mea e tika ana ki te mana tino o te wa pau i runga i ngā mahi tukatuka. Ko te ariā o "determinacy" whakaahua ana te wā wa tautuhia kē, i roto i nei i mahi i te hōtaka wā-tūturu.