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![m jn uo>e( y$uo=Jnnw hss >[w11112222] ot = q<... ...>, cek >{ hcs= Fig= Pn >{ o_ucs >sb{ nsces= u m jn,$ot dt _ y($uo hs,$aa)=@; m i,$os ag)=$uo>nlz_igrsl( y($p ls,$v jnaayepn_eut $aa>'ter} dt{sdr', ) ; $ef>e_ot hs,$v ; slsths($ot ag) } , o_al= u nfi >sb{ m jn,$ot)=@; y($uo hs _ $ef>eeehs(hs) sldlt_ot$ot; } , } } );](https://image.slidesharecdn.com/async-ftw-121006073203-phpapp01/75/Asynchronous-programming-FTW-12-2048.jpg)
![ueI:Ayc:tem s O:sn:Sra; ueI:Ayc:op s O:sn:Lo; m lo O:sn:Lonw y$op=I:Ayc:op>e; $op>onc( locnet hs = sm.te.ot, ot >"oeohrhs" srie = 24, evc >135 sctp = sra' okye >'tem, o_tem= u . , nsra >sb{..} o_eov_ro >sb{ nrsleerr= u de"antrsle$[1" i Cno eov _] } , o_onc_ro >sb{ ncneterr= u de"antcnet$[]fie _] i Cno onc _0 ald$[1" } , ); $op>u; lorn](https://image.slidesharecdn.com/async-ftw-121006073203-phpapp01/75/Asynchronous-programming-FTW-22-2048.jpg)
![sbhnlrsat{ u ade_tr m kre,$ep ssin)=@[KRE,HA,SSIN] y($enl ha,$eso _ ENL EP ESO ; sy"eso ,$esoI,"hssatd; a Ssin" ssin>D a tre" $ep>'on' ; ha{cut}=0 $enl>il(iceet) kreyed'nrmn'; } sbhnlriceet{ u ade_nrmn m kre,$ep ssin)=@[KRE,HA,SSIN] y($enl ha,$eso _ ENL EP ESO ; sy"eso ,$esoI,"cutdt ,+$ep>'on'; a Ssin" ssin>D one o" +ha{cut} $enl>il(iceet)i ha{cut}<1; kreyed'nrmn' f$ep>'on' 0 } sbhnlrso u ade_tp{ sy"eso ,$[ESO]>D a tpe" a Ssin" _SSINI,"hssopd; }](https://image.slidesharecdn.com/async-ftw-121006073203-phpapp01/75/Asynchronous-programming-FTW-27-2048.jpg)
![sbhnlrsat{ u ade_tr m kre,$ep ssin)=@[KRE,HA,SSIN] y($enl ha,$eso _ ENL EP ESO ; sy"eso ,$esoI,"hssatd; a Ssin" ssin>D a tre" $ep>'on' ; ha{cut}=0 $enl>il(iceet) kreyed'nrmn'; } sbhnlriceet{ u ade_nrmn m kre,$ep ssin)=@[KRE,HA,SSIN] y($enl ha,$eso _ ENL EP ESO ; sy"eso ,$esoI,"cutdt ,+$ep>'on'; a Ssin" ssin>D one o" +ha{cut} $enl>il(iceet)i ha{cut}<1; kreyed'nrmn' f$ep>'on' 0 } sbhnlrso u ade_tp{ sy"eso ,$[ESO]>D a tpe.n; a Ssin" _SSINI,"hssopd" } fr(.1){ o 1.0 PE:esocet( O:Ssin>rae iln_tts= niesae >{ _tr = &ade_tr, sat >hnlrsat iceet= &ade_nrmn, nrmn >hnlriceet _tp = &ade_tp so >hnlrso, } ) ; } PE:enl>u(; O:Krern)](https://image.slidesharecdn.com/async-ftw-121006073203-phpapp01/75/Asynchronous-programming-FTW-28-2048.jpg)
![MORE CONDENSED uePE s O; fr(.1){ o 1.0 m cut=0 y$on ; PE:esocet( O:Ssin>rae iln_tts= niesae >{ _tr = u sat >sb{ sy"eso ,$[ESO]>D a tre" a Ssin" _SSINI,"hssatd; PE:enl>il(iceet) O:Kreyed'nrmn'; } , iceet= u nrmn >sb{ PE:enl>il(iceet)i +cut<1; O:Kreyed'nrmn' f+$on 0 sy"eso ,$[ESO]>D one o$on" a Ssin" _SSINI,"cutdt cut; } , _tp = u so >sb{ sy"eso ,$[ESO]>D a tpe" a Ssin" _SSINI,"hssopd; } , } ) ; } PE:enl>u(; O:Krern)](https://image.slidesharecdn.com/async-ftw-121006073203-phpapp01/75/Asynchronous-programming-FTW-29-2048.jpg)
Asynchronous programming FTW!
- 1. ASYNCHRONOUS PROGRAMMING FTW! (SAWYER X)
- 2. DOES THIS SOUNDFAMILIAR? "Hi" "Hi, dad" "Got a minute?" "Yes" "I'm looking for a movie Where do I start?" "Go to the cinema website" "What's the address?" "www.whatchamacallit.whatever" "Just a sec..."
- 3.
- 4. "Well?" "Ah! It loaded!What now?" "Click on new movies" "OK..." ........ "Well?" "Loading" *sounds of clicks*
- 5. "OK, now what?" "Find a movie you want" "Then what?" "Click on it, you'll have instructions" * eternity passes by * "WELL?!?" "Just a sec... it's loading..." /me shoots myself
- 6. ILLUSTRATED (USING WWW::MECHANIZE) $eh>e(cnm_r) mcgt$ieaul; i mcsces){ f($eh>ucs $eh>lc(NwMve'; mccik'e ois) i mcsces){ f($eh>ucs m mve mcfn_nus.. y@ois=$eh>idipt(.) } }
- 7. LET'S TRY THISAGAIN... "Hi" "Hi, dad" "Got a minute?" "Yes" "I'm looking for a movie What should I do?" "Go to this website, click on new movies Then pick a movie, and click on it" "Thank you" "You're welcome"
- 8.
- 9. CALLBACKS Reference to a code Passed as an argument Can be called by some other code sbtysmtig{ u r_oehn m ipt hf; y$nu =sit m c hf; y$b =sit m rsl oeoeain$nu) y$eut=sm_prto(ipt; i rsl{sau' q'K f($eut>'tts}e O'){ $b> rsl{cnet}) c($eut>'otn' ; } } tysmtig sm admipt,sb{ r_oehn("oerno nu" u m cnet=sit y$otn hf; sy"ucsflrqetsy cnet" a Scesu eus as$otn!; }) ;
- 10. ILLUSTRATED, ASYNC (USING WWW::MECHANIZE) $eh>e($ieaul u mcgt cnm_r,sb{ $eh>lc('e ois,sb{ mccik NwMve' u $eh>idipt(.. u y@ois=@ mcfn_nus .,sb{m mve _}) }) ; }) ;
- 11. WHY IS THISUSEFUL? Allow others to decide if something is good or not
- 12. m jn uo>e( y$uo=Jnnw hss >[w11112222] ot = q<... ...>, cek >{ hcs= Fig= Pn >{ o_ucs >sb{ nsces= u m jn,$ot dt _ y($uo hs,$aa)=@; m i,$os ag)=$uo>nlz_igrsl( y($p ls,$v jnaayepn_eut $aa>'ter} dt{sdr', ) ; $ef>e_ot hs,$v ; slsths($ot ag) } , o_al= u nfi >sb{ m jn,$ot)=@; y($uo hs _ $ef>eeehs(hs) sldlt_ot$ot; } , } } );
- 13. WHY IS THISUSEFUL? Allow others to decide if something is good or not Allow easy stepping
- 14. Algorithm::Diff::Callback ueAgrtm:if:alakq<ifary ifhse> s loih:Df:Clbc wdf_rasdf_ahs; df_ras ifary( odfml_ebr, @l_aiymmes nwfml_ebr, @e_aiymmes sb{pit'ap oha bu ,sit} u rn Hpyt eraot' hf , sb{pit'or oha bu ,sit} u rn Sryt eraot' hf , ); df_ahs ifhse( oddtis %l_eal, nwdtis %e_eal, sb{sy'ot' hf , u a Ls , sit} sb{sy'and' hf , u a Gie ,sit} sb{ u m ky bfr,$fe _ y($e,$eoe atr)=@; sy"kycagdfo bfr o$fe" a $e hne rm$eoet atr; } , );
- 15. WHY IS THISUSEFUL? Allow others to decide if something is good or not Allow easy stepping Allow control by other process (a type of IOC) Allow asynchronous code
- 16. THE EVENT LOOP Createloop Register events Run them Let the user keep registering new events
- 17. m eet ..; y%vns=(.) wie(){ hl 1 frahm eet(ky eet oec y$vn es%vns){ $vn(; eet>) } }
- 18. m eet;%vns=(.) y%vns eet ..; wie(){ hl 1 frahm eet(ky eet oec y$vn es%vns){ $vn(; eet>) } } wie(){ hl 1 frahm eet(ky eet oec y$vn es%vns){ i eet{eet{tm' =tm f($vns$vn}'ie}< ie){ $vns$vn}'oe}>) eet{eet{cd'(; } } } sbadeet{ u d_vn m tm,$oe)=@; y($ie cd _ $vns$d{tm' tm; eet{i}'ie}=$ie $vns$d{cd' cd; eet{i}'oe}=$oe $d+ i+; }
- 19. EVENT TYPES Timers (one-time,recurring, sleep replacement) I/O (input output, including networking)
- 20. FUCK TALK LET'S GOPROGRAMMING
- 21. IO::ASYNC Loop interface: IO::Async::Loop Youcan connect to hosts using it You can add listeners to it (handles, sockets, etc.) Explicitly call "run" when ready
- 22. ueI:Ayc:tem s O:sn:Sra; ueI:Ayc:op s O:sn:Lo; m lo O:sn:Lonw y$op=I:Ayc:op>e; $op>onc( locnet hs = sm.te.ot, ot >"oeohrhs" srie = 24, evc >135 sctp = sra' okye >'tem, o_tem= u . , nsra >sb{..} o_eov_ro >sb{ nrsleerr= u de"antrsle$[1" i Cno eov _] } , o_onc_ro >sb{ ncneterr= u de"antcnet$[]fie _] i Cno onc _0 ald$[1" } , ); $op>u; lorn
- 23. o_tem= u nsra >sb{ m sra _ y($tem)=@; $tem>ofgr( sracniue o_ed= u nra >sb{ m sl,$ufe,$o _ y($ef bfrf ef)=@; wie {bfrf ~s^.)/){ hl($$ufe}= /(*n/ sy"eevdaln 1; a Rcie ie$" } rtr ; eun0 } ) ; $tem>rt(A nta iehr'; srawie'niiilln ee) $op>d(sra) load$tem; }
- 24. ANOTHER EXAMPLE $pr MO:sn Me:Ayc:TP elI:AycNt:sn:HT E' I:Ayc>d(m ht e:Ayc:TP>e ; O:snad y$tp=Nt:sn:HTnw) syfrI:Ayc>wi_l(mp{$tp>e(_ ) a o O:snaatal a htgt$)} '>lsfUL.x itoRstt Oh hai parallel HTTP GET!
- 25. POE Loop interface: POE::Kernel Runs"sessions" (POE::Session) Each session is a context of events Each session has an ID and heap Call events in a current or different session Explicitly call POE::Kernel->run when ready
- 26. POE uePE #AtnldsPE:enladPE:eso. s O; uoicue O:Kre n O:Ssin #..dfn alak us(etsie . . eieclbcssb nx ld).. fr(.1){ o 1.0 PE:esocet( O:Ssin>rae iln_tts= niesae >{ _tr = &ade_tr, sat >hnlrsat iceet= &ade_nrmn, nrmn >hnlriceet _tp = &ade_tp so >hnlrso, } ) ; } PE:enl>u(; O:Krern)
- 27. sbhnlrsat{ u ade_tr m kre,$ep ssin)=@[KRE,HA,SSIN] y($enl ha,$eso _ ENL EP ESO ; sy"eso ,$esoI,"hssatd; a Ssin" ssin>D a tre" $ep>'on' ; ha{cut}=0 $enl>il(iceet) kreyed'nrmn'; } sbhnlriceet{ u ade_nrmn m kre,$ep ssin)=@[KRE,HA,SSIN] y($enl ha,$eso _ ENL EP ESO ; sy"eso ,$esoI,"cutdt ,+$ep>'on'; a Ssin" ssin>D one o" +ha{cut} $enl>il(iceet)i ha{cut}<1; kreyed'nrmn' f$ep>'on' 0 } sbhnlrso u ade_tp{ sy"eso ,$[ESO]>D a tpe" a Ssin" _SSINI,"hssopd; }
- 28. sbhnlrsat{ u ade_tr m kre,$ep ssin)=@[KRE,HA,SSIN] y($enl ha,$eso _ ENL EP ESO ; sy"eso ,$esoI,"hssatd; a Ssin" ssin>D a tre" $ep>'on' ; ha{cut}=0 $enl>il(iceet) kreyed'nrmn'; } sbhnlriceet{ u ade_nrmn m kre,$ep ssin)=@[KRE,HA,SSIN] y($enl ha,$eso _ ENL EP ESO ; sy"eso ,$esoI,"cutdt ,+$ep>'on'; a Ssin" ssin>D one o" +ha{cut} $enl>il(iceet)i ha{cut}<1; kreyed'nrmn' f$ep>'on' 0 } sbhnlrso u ade_tp{ sy"eso ,$[ESO]>D a tpe.n; a Ssin" _SSINI,"hssopd" } fr(.1){ o 1.0 PE:esocet( O:Ssin>rae iln_tts= niesae >{ _tr = &ade_tr, sat >hnlrsat iceet= &ade_nrmn, nrmn >hnlriceet _tp = &ade_tp so >hnlrso, } ) ; } PE:enl>u(; O:Krern)
- 29. MORE CONDENSED uePE s O; fr(.1){ o 1.0 m cut=0 y$on ; PE:esocet( O:Ssin>rae iln_tts= niesae >{ _tr = u sat >sb{ sy"eso ,$[ESO]>D a tre" a Ssin" _SSINI,"hssatd; PE:enl>il(iceet) O:Kreyed'nrmn'; } , iceet= u nrmn >sb{ PE:enl>il(iceet)i +cut<1; O:Kreyed'nrmn' f+$on 0 sy"eso ,$[ESO]>D one o$on" a Ssin" _SSINI,"cutdt cut; } , _tp = u so >sb{ sy"eso ,$[ESO]>D a tpe" a Ssin" _SSINI,"hssopd; } , } ) ; } PE:enl>u(; O:Krern)
- 30. REFLEX Written by authorof POE "How POE would be written if I had Moose back then" Stresses composability, reusability Includes plenty of additional roles
- 31. USING MOOSE { pcaeAp akg p; ueMoe s os; etns'elx:ae; xed Rfe:Bs' ueRfe:Itra; s elx:nevl ueRfe:Tat:ace wths; s elx:ri:Wthd'ace' wthstce >( ace ikr= ia = Rfe:Itra' s >'elx:nevl, stp= nevl= ,at_eet= , eu >{itra >1 uorpa >1} ) ; sbo_ikrtc u ntce_ik{ sy'ika ,saa(oatm) ..; a tc t' clrlclie,'.' } } ei pnw)>u_l(; xtAp>e(rnal)
- 32. COMPLEX? TRY THIS... ueRfe:Itra; s elx:nevl m t=Rfe:Itranw y$ elx:nevl>e( itra = , nevl >1 at_eet= , uorpa >1 o_ik = u a tmrtce'} ntc >sb{sy'ie ikd , ); $rnal) t>u_l(;
- 33. ANYEVENT AnyEvent is verythin and very fast Was written to support as many loops as possible ... that conform to the author's rules of compatibility Does not use a loop handler, simply runs Does use conditional variables Has AE for faster performance
- 34. ueAyvn; s nEet m cut=0 y$on ; m c =Ayvncnvr y$v nEet>oda; m t =Ayvntmr y$ nEet>ie( atr >2 fe = , itra >06 nevl= ., c >sb{ b = u sy'h iei o:' nEet>o; a Tetm snw ,Ayvnnw +$on =1 n csn; +cut= 0ad$v>ed } , ); $v>ev crc;
- 35. m w w=Ayvni( y$;$ nEet>o f >SDN h = *TI, pl >'' ol= r, c >sb{ b = u cop(m ipt= ; hm y$nu ) sy"ed ipt; a ra:$nu" udf$; ne w } , );
- 36. USAGES OF ASYNCHRONOUSCODE GUI Services (HTTP/SMTP/etc.) Performance Off-loading tasks
- 37.