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goroutineの仕組みについて
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sivchari
November 13, 2021
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goroutineの仕組みについて
Go Conference 2021 Autumnで発表した資料です
sivchari
November 13, 2021
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Transcript
goroutineͷΈʹ͍ͭͯ ~Go Conference 2021 Autumn~
w 5BLVNB4IJCVZB!TJWDIBSJ w ଔ$ZCFS"HFOU ༧ఆ w όοΫΤϯυΤϯδχΞ w MJOUFS
044͕͖ ࣗݾհ
w (PͷSVOUJNFΛࢧ͑Δཁૉ w HPSPVUJOFͷϥΠϑλΠϜ w HPSPVUJOFͷεέδϡʔϦϯά ͢͜ͱ
~Let's Go~
~GoͷruntimeΛࢧ͑Δཁૉ~
w (HPSPVUJOF w .ϚγϯεϨου w 1HPSPVUJOFΛ࣮ߦ͢ΔϦιʔε w TDIFEάϩʔόϧͰϢχʔΫɺશͯͷ1Ͱڞ༗͞ΕΔ ొਓ
શମ૾ TDIFE SVOR NJEMF QJEMF ( 1 ( (
( ( ( ( 1 . . . 1 1 1 . . ( ( ( SVOR ( ( ( ( ( ( SVOR ( ( ( ( ( (
શମ૾ TDIFE SVOR NJEMF QJEMF ( 1 ( (
( ( ( ( 1 . . . 1 1 1 . . ( ( ( SVOR ( ( ( ( ( ( SVOR ( ( ( ( ( (
w NH ( Λ࣮ߦ͍ͯ͠ΔN . w TDIFE1$ͳͲͷΛอ࣋͢ΔελοΫ w BUPNJDTUBUVTHPSPVUJOFͷঢ়ଶ
ͭ w HPQDHPSPVUJOFΛੜͨ͠HPͷ1$ w TUBSUQDHPSPVUJOFͷ1$ G
શମ૾ TDIFE SVOR NJEMF QJEMF ( 1 ( (
( ( ( ( 1 . . . 1 1 1 . . ( ( ( SVOR ( ( ( ( ( ( SVOR ( ( ( ( ( (
w HεέδϡʔϥʔͷͨΊͷHPSPVUJOF w DVSHݱࡏ࣮ߦ͍ͯ͠ΔHPSPVUJOF w Q(PͷίʔυΛ࣮ߦ͢ΔͨΊʹඥͮ͘Q 1 M
શମ૾ TDIFE SVOR NJEMF QJEMF ( 1 ( (
( ( ( ( 1 . . . 1 1 1 . . ( ( ( SVOR ( ( ( ( ( ( SVOR ( ( ( ( ( (
w NQ 1 ʹඥͮ͘N . w SVOR1͝ͱʹอ࣋͢ΔH ( ͷMPDBMRVFVF
w HGSFF࣮ߦ͍ͯ͠ͳ͍ར༻ՄೳͳH ( P
શମ૾ TDIFE SVOR NJEMF QJEMF ( 1 ( (
( ( ( ( 1 . . . 1 1 1 . . ( ( ( SVOR ( ( ( ( ( ( SVOR ( ( ( ( ( (
w NJEMFJEMFͷN . Λอ࣋ w QJEMFJEMFͷQ 1 Λอ࣋ w SVOR
H ( Λอ࣋͢ΔHMPCBMRVFVF sched
~goroutineͷϥΠϑλΠϜ~
αϯϓϧίʔυ
newproc . 1 ( SVOR $SFBUFHPSPVUJOF
newproc1 ( . 1 ( SVOR
newproc ( . 1 ( SVOR
runqput ( . 1 ( SVOR (
runqputslow TDIFE . 1 ( SVOR (
globruqputbatch TDIFE . 1 ( SVOR ( (
~goroutineͷεέδϡʔϦϯά~
schedule TDIFE . 1 ( SVOR (
globrunqget TDIFE ( . 1 ( SVOR (
schedule . 1 ( SVOR (
runqget ( . 1 ( SVOR (
schedule . 1 ( SVOR
fi ndrunnable ( *0 ❌ @(XBJUJOH@(SVOOBCMF ( . 1
( SVOR
1 . ( SVOR 1 . ( SVOR (
( ( ( ( ( fi ndrunnable
stealWork/runqsteal 1 . ( SVOR 1 ( SVOR (
( ( ( ( ( ( ( ( .
execute ( . 1 ( SVOR
goexit ( . 1 ( SVOR
goexit1 ( . 1 ( SVOR
mcall ( . 1 ( SVOR
UPHGSFF goexit0 ( . 1 ( SVOR
αϯϓϧίʔυ IUUQTQMBZHPMBOHPSHQX81SL$YO)G
w (PಠࣗͷεέδϡʔϥʔͰHPSPVUJOFΛ੍ޚ͍ͯ͠Δ w ֤1͕SVORΛ࣋ͭ͜ͱͰϓϩάϥϜͷޮ͕ߴ·Δ w ෳࡶͳ࣮ͷ͓͔͛Ͱ؆୯ʹฒߦॲཧΛ࣮Ͱ͖Δ ·ͱΊ
~Tank you for watching~