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RubyでみるUNIXプロセス
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jagio
August 29, 2020
Programming
0
130
RubyでみるUNIXプロセス
「なるほどUNIXプロセス - Rubyで見るUNIXプロセス」を題材にif forkの挙動の説明
jagio
August 29, 2020
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Transcript
RubyͰΈΔUnixϓϩηε
JGGPSL͢ΔͱͲ͏ͳΔͷ͔ʁ
None
྆ํग़ྗ͞ΕΔʂ
5SVFͱ'BMTF͕ࠞࡏ͍ͯ͠Δʁ
ϓϩηεͱͳʹ͔
ͯ͢ͷϓϩάϥϜϓϩηε্Ͱಈ࡞͠ ͍ͯΔ ɾλʔϛφϧɺϒϥβɺϝʔϥʔɺ.Z42-αʔόʔɺFUDʜ ɾͪΖΜ3VCZϓϩάϥϜ
ϓϩηεʹ*%͕͋Δ 1*% ɾγεςϜͰಈ࡞͢Δϓϩηεݻ༗ͷࣝผࢠ ɾϓϩηε͕͍Δ ɾ͜ͷ߹ͷγΣϧ ɾͷ͍Δɻͦͷ·ͨʜ
ݪ࢝ͷϓϩηε ɾҰ൪ॳΊʹىಈ͢Δϓϩηε Ϛγϯͷిݯ0/ #*04͕ىಈ #*04͕.#3ॻ͖ࠐ·Ε͍ͯΔϒʔτϩʔμʢ-*-0(36#ʣΛىಈ ϒʔτϩʔμ͕ΧʔωϧΛىಈ ΧʔωϧىಈޙͷྲྀΕ ɾ֤छσόΠεͷॳظԽ ɾJOJUϓϩάϥϜͷىಈ ɾ͍͕ͭ͜ݪॳ
ɾϒʔτ࣌ͷॲཧ ɾSDεΫϦϓτͷ࣮ߦ Ҿ༻IUUQTXXXBUNBSLJUDPKQBJUBSUJDMFTOFXTIUNM
ϑΝΠϧσΟεΫϦϓλ ɾ6OJYͷੈքͰʮ͕ͯ͢ϑΝΠϧʯ ɾϦιʔεσόΠεɺιέοτɺύΠϓɺϑΝΠϧ ɾ࣮ߦதͷϓϩηεͰϦιʔεΛ։͘ͱϑΝΠϧσΟε ΫϦϓλ൪߸ׂ͕ΓৼΒΕΔ ɾখ͍͞ॱʹ൪߸ΛৼΒΕΔ
ͳΜͰ͔̏Βʁ ɾͯ͢ͷ6/*9ϓϩηεʹͭͷ։͔ΕͨϦιʔε͕ͭ ͍ͯ͘Δ ɾඪ४ೖྗ 45%*/ ɺඪ४ग़ྗ 45%065 ɺඪ४Τϥʔग़ྗ 45%&33
GPSLͱʁ ɾ࣮ߦதͷϓϩηε͔Β৽͍͠ϓϩηεΛ࡞ ɾ৽ن1*%ׂ͕ΓͯΒΕΔ ɾݩϓϩηεͱࢠؔ ɾ৽͍͠ϓϩηεݩͷϓϩηεͷશͳίϐʔ ɾϑΝΠϧσΟεΫϦϓλҾ͖ܧ͙ ɾϝϞϦશʹίϐʔ ɾ$P8 $PQZPO8SJUF
$PQZPO8SJUF ɾϓϩηεͷϝϞϦΛશʹίϐʔʜ͢ΔΘ͚Ͱͳ͍ ɾॻ͖ࠐΈ͕ඞཁʹͳΔ·ͰίϐʔΛΒͤΔ ɾͦΕ·ͰͱࢠϝϞϦ্ಉ͡σʔλΛཧతʹڞ༗ ɾͱࢠͷͲͪΒ͔Ͱมߋ͕ੜͨ͡ͱ͖ʹίϐʔ
$PQZPO8SJUF
3VCZͱ$P8 ɾ$P8͕͏·͘ಈ࡞͢ΔͨΊʹɺ3VCZͷ࣮͕Χʔωϧ͕ఏڙ͢Δ͜ͷ ػೳΛյ͞ͳ͍Α͏ʹॻ͔Ε͍ͯΔඞཁ͕͋Δ ɾ.3* $3VCZ Ҏ্Ͱอূ͞Ε͍ͯΔ ɾҎԼͰͦ͏Ͱͳ͔ͬͨ
ؓʗٳ <LBO><XB><LZV><EBJ>
JGGPSL͢ΔͱͲ͏ͳΔͷ͔ʁ
JG۟ϓϩηεɺFMTFࢠϓϩηεʹΑ࣮ͬͯߦ͞ΕΔ
GPSL ɾϓϩηεͰϓϩηε*%͕ฦΔ ɾ3VCZͰUSVF ɾࢠϓϩηεͰOJM͕ฦΔ ɾOJMGBMTF
ୡਓग़൛ձIUUQTUBUTV[JOFDPNCPPLTOBSVIPVOJY
ɾκϯϏϓϩηε ɾϓϩηεͷऴྃίʔυ ɾϓϩηεؒ௨৴ ɾσʔϞϯϓϩηε ɾ3FTRVFͷϓϩηεཧ ɾ6OJDPSOͷϫʔΧϓϩηεཧ