Re hokahane le C++ e nang le khoele e le 'ngoe ka Rust e nang le likhoele tse ngata
Re hokahane le C++ e nang le khoele e le 'ngoe ka Rust e nang le likhoele tse ngata Tlhahlobo ena e felletseng ea interfaced e fana ka tlhahlobo e qaqileng ea likarolo tsa eona tsa mantlha le litlamorao tse batsi. Libaka tsa Bohlokoa tsa Tsepamiso Lipuisano li shebane le: Mechini ea mantlha ...
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Re Kopanetse C++ e Mohala o le Mong ka Rust e nang le likhoele tse ngata
Ho kopanya khoutu e le 'ngoe ea C++ le Rust e nang le likhoele tse ngata ha ho khonehe feela - ke o mong oa mekhoa e sebetsang ea ho nchafatsa litsamaiso tsa lefa ntle le ho ngola bocha ka botlalo. Ha re le Mewayz, re ile ra sebetsana le phephetso ena ha re ne re phahamisa khoebo ea rona ea 207-module OS ho sebeletsa basebelisi ba 138,000, 'me liphetho li fetotse tsela eo re nahanang ka eona mabapi le tšebelisano ea litsamaiso.
Hobaneng o ka Kopanya C++ e Mohala o le Mong le Mafome a Multi-Threaded?
Litsamaiso tse ngata tsa tlhahiso li na le lilemo tsa C++ tse lekiloeng ka ntoa. Ho ngola ntho e 'ngoe le e' ngoe ho Rust ho utloahala ho ipiletsa pampiring, empa ho hlahisa kotsi e kholo le likhoeli tsa nako ea boenjiniere. Mokhoa oa pragmatic ke ho nkeloa ka lapeng ho ntseng ho eketseha - ho phuthela mohopolo o teng oa C++ ha o ntse o theola meroalo e boima ea chelete ho mofuta oa mong oa Rust.
Ho rona, li-module tsa logic tsa khoebo li ne li ntse li sebetsa ka mokhoa o ts'epahalang ho C++ ea khoele e le 'ngoe ka lilemo. Ba ne ba sebetsana le ts'ebetso e latellanang ea mesebetsi, tlhahiso ea litokomane, le lipalo tsa lichelete. Empa ha basebelisi ba rona ba ntse ba hola ho feta 100K, re ne re hloka ts'ebetso ea data e ts'oanang, ts'ebetso ea API e ts'oanang, le taolo e bolokehileng ea naha. Litšobotsi tsa Rust tsa Send le Sync li re file tiisetso ea nako e kopaneng ea hore C++ e ne e ke ke ea fana ntle le tlhahlobo e batsi ea matsoho.
Ntho ea bohlokoa ke ho fokotsa kotsi. U boloka se sebetsang, 'me u eketsa sekala - ntle le ho becha codebase ea hau kaofela ho falla ho sa feleng.
Hantlentle Moeli oa FFI o sebetsa Joang?
The Foreign Function Interface (FFI) lipakeng tsa C++ le Rust e sebetsa ka mesaeno ea tšebetso e lumellanang le C. Rust's extern "C" e thibela ho pepesa mesebetsi eo C++ e ka e bitsang ka ho toba, le ka tsela e fapaneng. Phephetso e mahlonoko e hlaha ha Rust e sebelisa likhoele tse ngata e hloka ho sebelisa khoele e le 'ngoe ea C++ ka mokhoa o sireletsehileng.
Re rarolle sena ka ho sebelisa boqapi bo ikhethileng:
- Sephethi se nang le khoele ea C++: Mehala eohle ea C++ e tsamaisoa ka khoele e le 'ngoe ho sebelisoa mocha o fetisang molaetsa, ho etsa bonnete ba hore phetoho ea khoele e le 'ngoe ha e tlosoe.
- Rust async bridge layer: Mesebetsi ea Tokio e fana ka mosebetsi ho mophethahatsi oa C++ 'me
e emetseliphetho ka likanale tse le 'ngoe, ho boloka lehlakore la Rust le sa lumellane ka botlalo. - Taolo ea lintlha tse hlakileng: Lintho tsa C++ li phuthetsoe ka Rust structs e kenyang tšebetsong
Dropbakeng sa ho hloekisa, ho thibela ho lutla ha mohopolo ho pholletsa le moeli oa puo. - Ho arola moeli moeling: Mehaho e rarahaneng ea data e arolelitsoe ho FlatBuffers karolong ea FFI, ho qoba ho bapisa sebopeho le ho etsa hore lehlakore ka leng le fetohe.
- Ho itšehla thajana:
catch_unwindea Rust e phuthela sebaka se seng le se seng sa ho kena sa FFI e le hore letsoso le se ke la tšela moeli oa puo, e leng boitšoaro bo sa hlalosoang.
Paterone ena e re file tšebetso ea Rust ea likhoele tse ngata ka ts'epahalo ea menahano e netefalitsoeng ea C++ - ntle le ho ngola hape mola o le mong oa melao ea mantlha ea khoebo.
Ke Likotsi life tse kholohali tseo u lokelang ho li Qoba?
Phoso e kotsi ka ho fetesisa ke ho nka hore khoutu ea C++ e bolokehile ha ho se joalo. Boemo ba lefats'e, mefuta e sa fetoheng, le mehala ea laeborari e sa keneng e tla baka mabelo a data ao mohlophisi oa Rust a ke keng a a lemoha ho tšela moeli oa FFI. Tiisetso ea ts'ireletso ea Rust e emisa sebakeng sa e sa bolokehang — tsohle tse ka hare ke boikarabello ba hau.
Tlhahiso ea bohlokoa: Rust e tiisa ts'ireletso ea mohopolo ka har'a khoutu ea eona, empa hang ha u tšela moeli oa FFI ho kena C++, u rua bothata bo bong le bo bong ba ts'ireletso eo C++ e nang le eona. Mehaho e potolohileng moeli oo e bohlokoa ho feta khoutu e ka mahlakoreng 'ohle a eona.
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Leraba le leng le tlwaelehileng ke taolo ya bophelo bohle. Lintho tsa C ++ ha li kenye letsoho ho hlahlobang kalimo ea Rust. Haeba Rust e theola referense ha C++ e ntse e tšoere pointer, u fumana likokoana-hloko tse sa sebeliseng letho tseo ho leng thata ho li fumana. Re rarollotse sena ka ho tiisa semantics ea botho: Lintho tsa C++ li lula li le tsa Rust wrapper e le 'ngoe, 'me phihlello e arolelanoang e fetela ho Arc-based reference counting ka lehlakoreng la Rust.
Ho sebetsa ka bohlale, mehala e fetelletseng ya FFI e etsa hore ho be le maemo a feto-fetohang le ho seriale. Re kopanya ts'ebetso hohle moo ho khonehang, re romela letoto la lintho tsa mosebetsi ho molaoli oa C++ ho e-na le ho letsetsa motho ka mong ka lipuo tse fapaneng.
Mokhoa ona o sebelitse joang tlhahisong?
Kamora ho kenya meralo e nyalisitsoeng sethaleng sa rona, re ile ra lekanya ntlafatso ea konkreite. Kopo ea tlhahiso e eketsehile ka 3.4x bakeng sa li-module tseo pele li neng li sa sebetse ka tatellano ea C++. Tail latency (p99) e theohile ka 61% hobane Rust's async runtime e ne e ka sebetsana le likopo tse ikemetseng ka nako e le 'ngoe ha C++ e sebetsana le mesebetsi e boima ea computation khoeleng ea eona e inehetseng.
Habohlokoa le ho feta, re bile le litšitšili tse amanang le chelete e se nang letho likhoeling tse tšeletseng tse qalang tsa tlhahiso. Mokhoa oa ho koalloa ha likhoele o entse hore ho se khonehe ka sebopeho hore khoutu ea C ++ e bitsoe ho tsoa likhoeleng tse ngata, athe mofuta oa Rust o thibela merabe ea data ka lehlakoreng la moeli oa eona. Ena e bile ntlafatso e kholo ho feta mokhoa oa rona oa pele oa ho leka ho kenya likhoele ho C++ ka limumu, tse hlahisitseng liketsahalo tse tharo tsa maemo a morabe kotareng e le 'ngoe.
Sehlopha sa boenjiniere se boetse se tlalehile ka lebelo la ho pheta-pheta. Likarolo tse ncha li ka hahuoa ho Rust ka tšehetso e felletseng ea concurrency, ha li-module tsa C ++ tse teng li ntse li tsoela pele ho sebetsa ntle le phetoho. Leano lena la katoloso le ne le bolela hore ha ho mohla re kileng ra ba le phalliso e kotsi haholo ea "big bang" - ntlafatso e tsitsitseng, e ka lekanyetsoang.
Lipotso Tse Botsoang Hangata
Na Rust e ka letsetsa lilaebrari tsa C++ tse nang le khoele e le 'ngoe ntle le phetoho?
E, empa o tlameha ho etsa bonnete ba hore mehala eohle ea laeborari eo e etsoa ka khoele e le 'ngoe. Mokhoa o tloaelehileng ke ho theha khoele ea moahloli e inehetseng e kopanyang li-call tsohle tsa C++ ka mocha. Mesebetsi ea async ea Rust e fana ka likopo mme e emetse likarabo ntle le ho thibela nako ea ho sebetsa e nang le likhoele tse ngata. Khoutu ea C++ ka boeona ha e hloke liphetoho - tšitiso ea polokeho e qobelloa ka botlalo ka lehlakoreng la Rust.
Na bokaholimo ba FFI bo bohlokoa hoo bo ka amang ts'ebetso ea ts'ebetso?
Mehala ea motho ka mong ea FFI e na le hlooho e nyane haholo - hangata e ka tlase ho li-nanoseconds tse 10 bakeng sa mohala o bonolo. Leha ho le joalo, serialization ea libopeho tse rarahaneng tsa data le khokahanyo ea likhoele moeling lia eketseha haeba u etsa li-call tse likete tse hlakileng. Ts'ebetso ea ho kopanya le ho sebelisa liforomo tsa serialization tsa zero-copy joalo ka FlatBuffers kapa Cap'n Proto li lula li sa hlokomelehe le ka tekanyo e kholo.
Na re lokela ho ngola khoutu ea rona ea C++ bocha ho Rust ho fapana le ho kopanya?
Bakeng sa lihlopha tse ngata, ho kena-kenana le ho hokahana ke tsela e sireletsehileng le e potlakileng. Ho ngola bocha ka botlalo ho hlahisa kotsi ea boenjineri ea likhoeli tse ngata ntle le boleng bo shebaneng le basebelisi ho fihlela phethoa. Interfacing e o lumella ho tsamaisa lintlafatso hang-hang, ho netefatsa mokhoa oa Rust tlhahisong, le ho falla li-module ka bonngoe ho latela moo concurrency e fanang ka tšusumetso e kholo. Ngola feela likarolo tseo litšenyehelo tsa ho boloka moeli oa FFI li fetang litšenyehelo tsa ho ngola bocha.
Mewayz, re haha lisebelisoa tse lekanyang - ka botekgeniki le ka ts'ebetso. OS ea rona ea khoebo ea li-module tse 207 e thusa lihlopha tse 138,000 ho tsamaisa tšebetso e bohlale ho qala ho $19/ khoeli. Hore na o laola merero, o iketsetsa ts'ebetso, kapa o holisa khoebo ea hau, Mewayz e ikamahanya le tsela eo u sebetsang ka eona. Qala teko ya hao ya mahala ho app.mewayz.com mme o bone seo tsamaiso ya sejwalejwale ya OS e ka se etsetsang sehlopha sa hao.
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