Programming RbBCC

Transcript

1. -JOVYͷτϨʔγϯάٕज़Λ
 $3VCZ͔Βར༻͢Δ؀ڥͷ੔උ 6DIJP
   ,POEP
   
   (.0
   1FQBCP
   *OD
   !
   3VCZ
   "TTPDJBUJPO
   "DUJWJUZ
   3FQPSU 1SPHSBNNJOH
   3C#$$

2. େࣄͳ͓஌Βͤ

3. 3C#$$
   
   ຊ೔ϦϦʔε 3C#$$
   
   
   ͸
   3VCZ
   
   Ͱ͸ಈ͖·ͤΜ pEEMF
   ** char
   ܕʹͳ͍ͬͯΔҾ਺ʹ
   ۭจࣈΛ౉͢ͱɺ͸0,ɺ͸4&(7

4. wۙ౻Ӊஐ࿕
   
   ,POEP
   6DIJP
   w(.0ϖύϘ
   ٕज़ج൫νʔϜ
   wຊۀ
   %VPMJOHPͱ0WFSDPPLFE
   
   wझຯ
   -JOVYɺ$POUBJOFSTɺγεϓϩ
   w3VCZ,BJHJ
   
   
   

5. ΞδΣϯμ wF#1'ͱ3C#$$ͷ঺հʢdNʣ
   wຊॿ੒ʹΑΔ੒Ռ෺ͷ঺հʢdNʣ
   w؆୯ͳ3C#$$ͷϥΠϒίʔσΟϯάʢNdʣ
   w·ͱΊɺࠓޙʢdNʣ

6. F#1'ͷ࿩

7. F#1'ͱ͸ w#FSLFMFZ
   1BDLFU
   'JMUFS
   
   wຊདྷ͸ɺύέοτϑΟϧλͷͨΊͷΞϧΰϦζϜɾٕज़ͷ໊લ
   w೥ʹ-JOVYʹҠ২͞ΕɺMJCQDBQͷதͳͲͰར༻
   wঃʑʹTFDDPNQ΍ɺΧʔωϧΠϕϯττϨʔεʹར༻͞ΕΔ

8. Ͱ͖Δ͜ͱ wF#1'͸ɺಠࣗͷ໋ྩηοτΛ࣋ͭ7.ͱߟ͑ͯྑ͍ɻ
   wΧʔωϧͷதͰಈ͍ͯɺߴ଎ʹ༷ʑͳ΋ͷΛϑΟϧλϦϯά͢Δ
   wύέοτϑΟϧλʔʢUDQEVNQɺUDɺ9%1ʣ
   wγεςϜίʔϧͷϑΟϧλʔʢTFDDPNQʣ
   wΧʔωϧΠϕϯτͷϑΟϧλʔʢ#$$CQGUSBDFʣ
   wͦͷଞʢDHSPVQͷσόΠεΞΫηε੍ޚͰ࢖ͬͨΓʣ

9. IUUQXXXCSFOEBOHSFHHDPNCMPHCQGQFSGPSNBODFUPPMTCPPLIUNM
   

10. #$$ͱ͸ʁ wF#1'ͷϓϩάϥϜΛಈ͔͢ʹ͸ɺCQG  γεςϜίʔϧʹόΠτ ίʔυΛ౉͢ܗʹͳΔɻόΠτίʔυΛਓ͕ॻ͘ͷ͸೉͍͠
    wͦ͜Ͱ
    #1'
    $PNQJMFS
    $PMMFDUJPO
    w$ϕʔεͷҰछͷ%4-ʴεΫϦϓτݴޠʢ1ZUIPOɺ-VBͷϥΠϒϥϦ ΛಉࠝʣͰF#1'ͷπʔϧΛॻ͘͜ͱ͕Ͱ͖Δ

11. طଘٕज़ͱͷҧ͍ wطଘͷτϨʔγϯάٕज़͕͍͔ͭ͋͘Δ
    wTUSBDF
    HEC
    
    QUSBDF 
    ϕʔεͷ΋ͷ͸ɺҰॠࢭΊͯݕࠪ͢ΔΞʔΩςΫνϟ ͳͷͰɺΦʔόʔϔου͕ແࢹͰ͖ͳ͍ϨϕϧʹͳΔ
    wQFSG
    
    جຊతʹ͸ूܭ͕ϢʔβϥϯυͳͷͰɺෛՙʹͳΔ͜ͱ͕͋Δ
    wTZUFNUBQ
    GUSBDF
    
    F#1'ͱಉ౳ͷιʔεΛ࢖͍ΠϕϯτΛऔΔɻͨͩɺ

    F#1'ͷ࣋ͭόϦσʔγϣϯʹΑΔ҆શੑɺΧʔωϧଆͰͷूܭʹΑΔߴ଎ੑ ͳͲ͸ϝϦοτ͔

12. ൺֱਤ 5PPMT 3FMBUFE
    TZTDBMMT 4JEF
    &⒎FDU /PUF gdb strace ptrace(2) େ ର৅ΛҰ࣌తʹࢭΊͯɺ


    ৘ใΛऔಘ͠࠶։͢Δ perf perf_event_open(2) தʙখ جຊతʹूܭ͔Βઌ͸
 Ϣʔβϥϯυ systemtap ftrace (kern module) (tracefs) தʙখ F#1'ΑΓݹΊͷΧʔωϧ
 Ͱ΋ར༻Մೳ bpftrace BCC bpf(2) perf_event_open(2) খ WBMJEBUPSɺ#1'
    NBQͳͲ
 ར༻ՄɺݴޠόΠϯσΟϯάଟ

13. طଘٕज़ͱͷҧ͍  wF#1'
    
    ΧʔωϧͰϓϩάϥϜΛಈ͔͢࢓૊Έ
    wΧʔωϧͰϓϩάϥϜΛಈ͔͢ͱ͍͏ҙຯͰ͸ૉ௚ʹϞδϡʔϧΛॻ ͘͜ͱ΋Ͱ͖Δ
    wΧʔωϧϞδϡʔϧ͸౰વɺඇৗʹଟ͘ͷ͜ͱ͕Մೳ͕ͩɺόά΍
 ةݥͳίʔυ΋࣮ߦՄೳͰɺΧʔωϧύχοΫ౳ͷڪΕ͕͋Δ
    wF#1'
    ͷ࣮ߦػߏʹ͸WFSJpFS͕ଘࡏ͠ɺةݥͳίʔυΛݕ஌͢Δ ʢFH
    ແݶϧʔϓʣ

14. IUUQXXXCSFOEBOHSFHHDPNCMPHCQGBOFXUZQFPGTPGUXBSFIUNM
    

15. F#1'ࣗମͷઆ໌ࢿྉʢࢀߟʣ wIUUQTTQFBLFSEFDLDPNDIJLVXBJUMFBSOFCQG

16. Ϟνϕʔγϣϯ

17. #$$ͱ͸ʢ࠶ܝʣ wF#1'ͷϓϩάϥϜΛಈ͔͢ʹ͸ɺCQG  γεςϜίʔϧʹόΠτ ίʔυΛ౉͢ܗʹͳΔɻόΠτίʔυΛਓ͕ॻ͘ͷ͸೉͍͠
    wͦ͜Ͱ
    #1'
    $PNQJMFS
    $PMMFDUJPO
    w$ϕʔεͷҰछͷ%4-ʴεΫϦϓτݴޠʢ1ZUIPOɺ-VBͷϥΠϒϥϦ ΛಉࠝʣͰF#1'ͷπʔϧΛॻ͘͜ͱ͕Ͱ͖Δ

18. ͑ͬ
    3VCZ͸

19. ॻ͔͘͠ͳ͍
    ʢ͍ͭͰʹษڧ͠Α͏ʣ

20. F#1'
    Y
    3VCZͷϞνϕʔγϣϯ w3VCZΛಈ͔͢04ͱͯ͠ॏཁͳɺ-JOVYͷਐԽͷԸܙΛɺ3VCZ։ൃऀ ʢݴޠίΞ։ൃऀɺϢʔβ྆ํʣ͕ڗडͰ͖ΔΑ͏ʹ͍ͨ͠
    w3C#$$Ͱɺ3VCZίΞ։ൃऀͷڞ௨ݴޠͰ͋Δ$ݴޠͱ3VCZͷ
 ஌͚ࣝͩͰෳࡶͳτϨʔγϯά͕Ͱ͖ΔΑ͏ʹͳΔ
    w%4-ͷΑ͏ͳ࢓૊Έͱ૊Έ߹ΘͤΔ͜ͱͰɺτϨʔγϯάΛ΋ͬͱ
 &OKPZBCMFͳ΋ͷʹͰ͖ͳ͍͔

21. ੒Ռ

22. ୡ੒ͨ͜͠ͱ w#$$
    ͷ
    1ZUIPO
    ࣮૷Λ࣮༻ʹे෼ͳػೳʹ͍ͭͯ3VCZʹҠ২ͨ͠
    wαϯϓϧϓϩάϥϜɺԿΑΓνϡʔτϦΞϧΛ࡞੒ͨ͠
    w೔ຊޠ൛νϡʔτϦΞϧؚΉ
    w3C#$$
    Λར༻ͨ͠1P$Ϩϕϧͷ࣮ྫɾπʔϧΛ։ൃ

23. #$$
    
    3C#$$ w#$$͸
 جຊతʹ
 MJCCDDͷ''*

24. #$$
    
    3C#$$ w3VCZඪ४ͷ
 pEEMFͰ
 1ZUIPOͷ
 DUZQFTΛஔ׵

25. pEEMF
    ͷར༻ w3C#$$͸3VCZͷඪ४ϥΠϒϥϦͷΈͰಈ࡞͢Δ
 ʢ΋ͪΖΜMJCCDDTP͕ೖ͍ͬͯΔલఏͰ͸͋Δɻϔομ͸ෆཁʣ

26. 1ZUIPO൛ͷϦϑΝϨϯεʹ͋Δؔ਺͸໢ཏ

27. αϯϓϧ͍͔ͭ͘ɺνϡʔτϦΞϧ

28. ೔ຊޠνϡʔτϦΞϧ

29. 1ZUIPO൛ͱͷൺֱ wఏग़ͨ͠࠷ऴใࠂΛ͝ཡ͍ͩ͘͞

30. ։ൃͨ͠πʔϧ
    #1'2- wCQGUSBDFͷ͋ͷݴޠͰ͸ͳ͘:".-3VCZͰτϨʔεͰ͖ΔίϚϯυ CQGUSBDF #1'2-
    3VCZ
    %4-

31. ಈը

32. ։ൃͨ͠πʔϧ
    3BDL&#1' w64%5ʢޙड़ʣΛར༻͠ɺ3BDL
    .JEEMFXBSFʹ1SPCFΛ࢓ࠐΈܭଌ
 ूܭ͢Δαϯϓϧ

33. 3BDL&#1'ͷಈ࡞ݪཧ w੍ݶ
    εϨουʹϦΫΤετͱ͍͏લఏ͕͋Δ

34. ಈը

35. 3C#$$ͷ
    ར༻ʹ͋ͨͬͯ

36. ϙΠϯτ͍͔ͭ͘ wΠϕϯτιʔεͰओཁͳ΋ͷ͸ͭ͋Δɺ஌͓ͬͯ͘
    wLQSPCFɺUSBDFQPJOUɺVQSPCFɺ64%5
    wΠϯετʔϧखॱͳͲ͸(FUUJOH
    4UBSUFEͰ
    6CVOUV
    
    ָ͕
    wMJCCDD
    ͷόʔδϣϯ͸ɹਪ঑
    
    0,
    
    wιϑτ΢ΣΞͷੑ্࣭ɺ୯७ʹ%PDLFSԽͮ͠Β͍
    w݁ہ஌Γ͍ͨͷ͸ϗετ͕Ͳ͏ͳͬͯΔ͔ͩͬͨΓ͢ΔΜͰ

37. LQSPCFLSFUQSPCF wΧʔωϧ಺෦ͷؔ਺Λ௚઀ѻ͏QSPCFɻ
    wόʔδϣϯͰΠϯλϑΣʔε͕มΘΔ͔΋͠Εͳ͍ɻ
    wLQSPCF͕ؔ਺Τϯλʔ࣌ɺLSFUQSPCF͕Ϧλʔϯ࣌
    wͲͷΑ͏ͳLQSPCF͕Կʹ࢖ΘΕ͍ͯΔ͔͸αϯϓϧͰษڧ

38. USBDFQPJOU w3VCZͷ5SBDF1PJOUͱ͸ҧ͏֓೦Ͱɺ-JOVYͷQSPCFͷ͜ͱ
    wΧʔωϧʹ੩తʹ૊Έࠐ·Εɺ໊લ΍Ҿ਺͸جຊతʹมΘΒͳ͍
    wυΩϡϝϯτ͕ίϝϯτʹ͋Δ৔߹΋͋Δ
    wαϯϓϧͰͷ࢖ΘΕํΛݟΔ΄͏͕ૣ͍͜ͱ͕ଟ͍ wྫ
    wTZTDBMMTTZT@FOUFS@ cTZT@FYJU@
    γεςϜίʔϧͷ௥͍͔͚
    wSBOEPNVSBOEPN@SFBE
    VSBOEPN΁ͷಡΈऔΓ
    

    wTDIFETDIFE@QSPDFTT@FYJU
    ϓϩηεͷऴྃ
    ͳͲ

39. VQSPCFVSFUQSPCF wϢʔβϓϩάϥϜͷؔ਺ͳͲʹϑοΫͨ͠ΠϕϯτΛɺΧʔωϧͰ௥ ͍͔͚ΒΕΔػೳɻ
    wجຊతʹ͸FYQPSU͞ΕͯΔγϯϘϧΛQSPCF͢Δ
    wͪ͜Β΋VQSPCF͕ΤϯλʔɺVSFUQSPCF͕Ϧλʔϯ

40. 64%5 wϢʔβϓϩάϥϜͷ೚ҙͷՕॴʹQSPCFΛຒΊࠐΉػೳɻ
    wͲ͜ʹຒΊࠐ·Ε͍ͯΔ͔͸&-'ϔομͰ֬ೝͰ͖Δɻ
    wτϨʔε༗ޮ࣌ʹॳΊͯτϨʔε໋ྩ͕ಈ࡞͠ɺීஈ͸OPQ໋ྩʹ ͳ͍ͬͯΔɻ͕ͨͬͯ͠ແޮ࣌͸Φʔόϔου͕ͳ͍ɻ

41. 3VCZͷ64%5 w--enable-dtrace
    ΦϓγϣϯΛ༗ޮʹͯ͠Ϗϧυ͢Ε͹༗ޮʹ
    wSCFOW
    ͳΒɺ36#:@$0/'*(63&@0154
    ؀ڥม਺Ͱࢦఆ
    wԿ͕ຒ·͍ͬͯΔ͔͸%5SBDFଆͷυΩϡϝϯτΛࢀর
    w
    TFF
    ʮ3VCZ
    
    ͷ
    %5SBDF
    ͷ঺հʯ
    w IUUQTNBHB[JOFSVCZJTUOFUBSUJDMFT4QFDJBMEUSBDFIUNM
    
    w 8JLJ΋
    IUUQTCVHTSVCZMBOHPSHQSPKFDUTSVCZXJLJ%5SBDF1SPCFT
    

42. 3VCZͷ64%5

43. ϥΠϒͰͷ
    πʔϧ࡞੒σϞ

44. Ͳ͏΋ʂ
    VE[VSBͰ͢

45. ࠓޙͷల๬
    ʢ͕࣌ؒ͋Ε͹ʣ

46. 3FE
    %BUB
    5PPMT
    ࿈ܞ w۩ମతʹ͸ɺ$IBSUZͷσʔλߏ଄ʹɺ3C#$$ʹ͓͚Δ#1'
    NBQΛ දݱͨ͠ΫϥεΛରԠ͍ͤͨ͞
    w$IBSUZ5BCMF"EBQUFST#$$
    తͳΞμϓλΛ࣮૷͢ΔͱΑ͍
    w$IBSUZͷࢿ࢈Λͦͷ··࢖ͬͯʢFH
    VOJDPEF@QMPUSCʣ
 τϨʔε݁ՌͷՄࢹԽ͕Ͱ͖Δ

47. ωοτϫʔΫτϨʔεपล wຊՈͷ
    FYBNQMFTOFUXPSLJOH
    ഑Լʹ͋ΔΑ͏ͳαϯϓϧͷҠ২
    wগ͚ͩ͠։͍࢝ͯ͠Δ
    w9%1΋ྲྀߦͬͯΔͷͰ
    wط஌ͷ໰୊఺
    QZSPVUF
    ૬౰ͷHFN͕3VCZʹͳ͍ͷͰɺҰ෦ͷαϯ ϓϧ͸؆୯ͳҠ২ͱ͍͏Θ͚ʹ͍͔ͣ೰·͍͠ɻ
    wOFUMJOL
    TPDLFUͱ͓͠Ό΂Γ͢ΔHFN͕ཉ͍͠ɻ

48. ΋ͬͱকདྷ
    VQTUSFBN΁ͷߩݙ wকདྷ͸JPWJTPSϓϩδΣΫτʹدଃ͠ɺ
 #$$։ൃίΞͱาௐΛ߹ΘͤΔͳͲ͍ͨ͠
    wͦͷલʹ඼࣭Λ্͍͛ͨʢݴ͍༁ʣ
    wͲ͏͍͏खଓ͖ΛͱΕ͹͍͍ͷͩΖ͏ʁ
    w͜ͷࢿྉΛݟͨํͰॿݴ͕͋Ε͹ͱࢥ͍·͢

49. ँࣙ

50. ँࣙ wϝϯλʔͷ࡫ాߞҰ͞Μ
    w͘͞ΒΠϯλʔωοτͷদຊ྄հ͞Μɺ۝भେֶ
    ৘ใج൫ݚڀ։ൃ ηϯλʔͷౢ٢ོ෉ઌੜɺּݪٛߊઌੜ
    wಛʹɺ#1'2-͸ౢ٢ઌੜͷΞυόΠεΛԼෑ͖ʹ͍ͯ͠·͢

51. &OKPZ
    5SBDJOH