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LLDB + chisel = ∞ 2014/04/26 yidev౦ژୈೋճ @dealforest Toshihro Morimoto
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ࣗݾհ http://about.me/dealforest ! ! iOS App / Web Application(perl, ruby) @dealforest Toshihro Morimoto
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Έͳ͞Μ LLDB ͔ͭͬͯ·͔͢ʁ
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ͱ͋Δੲ…
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LLDB ͕σϑΥϧτͷ Debugger ͱͳΓ·͕ͨ͠ OS X 10.8.4 Ͱ Xcode ͔ΒΞϓϦέʔγϣϯΛ iOS Simulator Ͱ࣮ߦͨ͠ͱ͖ʹ SIGABRT Ͱ ΞϓϦ͕ىಈͤͣʹ crash ͢Δ (※Xcode 4.6.3 Ͱमਖ਼͞Ε·ͨ͠)
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ղܾࡦ σόοΨΛ LLDB ͔Β GDB ʹมߋ͢Δ
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ͱ͍͏͜ͱ͕Γ·͕ͨ͠ Xcode 5.1.1 ͷࡢࠓ Έͳ͞Μ LLDB ͬͯ·͢ΑͶʁ
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ͳͥ LLDB(σόοΨ) ʹ ݻࣥ͢Δͷ͔ʁ
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ϓϩδΣΫτʹґଘͤͣ͠ʹ σόοά͍ͨ͠
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؆୯ͳ͓͞Β͍
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iOS Advent Calendar 2013 6
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͓͞Β͍ͷ༰ • object ͷදࣔ/มߋ/ఆٛ/ • Python ͷ࣮ߦ • Inspector ͷΧελϚΠζ • ΧελϜίϚϯυͷ࡞ • ઃఆϑΝΠϧ
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object Λදࣔ (llbd) po [“obejct” or “address”] (lldb) p [“primitive value” or “address”]
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object ͷΛมߋ (lldb) po self.title = @“hoge”
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object Λఆٛ (lldb) po NSString *$hoge = @“hoge” (lldb) po $hoge
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Python ͷ࣮ߦ (lldb) script print 'hoge'
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Python ͷ࣮ߦ (lldb) script import os (lldb) script print os.getcwd()
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ΧελϜίϚϯυͷ࡞ ΊΜͲ͍͘͞ͷͰ Qiita Λݟ͍ͯͩ͘͞
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Inspector ͷΧελϚΠζ http://stavash.wordpress.com/2013/01/06/advanced-issues-creating-custom-lldb- object-summaries/
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Inspector ͷΧελϚΠζ
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Inspector ͷΧελϚΠζ
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ઃఆϑΝΠϧ 1. ~/.lldbinit-Xcode • Xcode ͔Βىಈͨ͠ࡍͷઃఆΛهೖ 2. ~/.lldbinit • shell ͔Βىಈͨ͠ࡍͷઃఆΛهೖ
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ઃఆϑΝΠϧ ~/.lldbinit-Xcode ͕͋Δ߹ ~/.lldbinit ͕ಡΈࠐ·Εͳ͍ͷͰཁҙ
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ઃఆϑΝΠϧ ~/.lldbinit-Xcode ʹ command source ~/.lldbinit Λهೖ͓ͯ͘͜͠ͱͰճආՄೳ
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ઃఆϑΝΠϧʹ alias Λॻ͘͜ͱ͕Ͱ͖·͢
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ศརͳ alias Λհ
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stacktrace Λදࣔ (lldb) st ! command regex st 's/^[[:space:]]*$/po [NSThread callStackSymbols]/'
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ڥมΛදࣔ (lldb) pe ! command regex pe 's/^[[:space:]]*$/po [[NSProcessInfo processInfo] environment]/'
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NSDate Λ NSString ʹมͯ͠දࣔ (lldb) pd [NSDate] ! command regex pd 's/^(.+)$/po [[NSString alloc] initWithData: %1 encoding:4]/'
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CALayer ͷ Animation ͷมߋ (lldb) pa 0.4 # slow (lldb) pa 1 # normal ! command regex pa 's/^(.+)$/p [(CALayer *)[[[[UIApplication sharedApplication] windows] objectAtIndex: 0] layer] setSpeed:%1]/'
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؆୯ͳ͓͞Β͍͓ΘΓ
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ຊ
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Xcode 5.1 ͔Β break தʹ QuickLook Ͱදࣔ͞ΕΔΑ͏ʹͳΓ·ͨ͠
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͋͘·Ͱίʔυ্ʹ ରͷ Object ͕ͳ͍ͱ ͍͚ͳ͔ͬͨΓԿ͔ͱෆศͰ͢
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ͬͱࣗ༝ʹௐ͍ͨ
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ίϚϯυΛཧ͢ΔͷΊΜͲ͍͘͞
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alias Λཧ͢ΔͷΊΜͲ͍͘͞
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ϝϯςφϯε͢ΔͷΊΜͲ͍͘͞
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ͦΜͳଵଦͳΈͳ͞·ͷ ͨΊʹศརͳͷ͕͋Γ·͢
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facebook/chisel https://github.com/facebook/chisel
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Install $ brew install chisel or $ git clone https://github.com/ facebook/chisel.git
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Install $ echo “command script import / path/to/fblldb.py” >> ~/.lldbinit
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chisel - version 1.1.0 • Python Ͱॻ͔Ε͍ͯ·͢ • LLDB ༻ͷ Debug ʹཱͭίϚϯυू • ࣮ػͰ͑Δ • ֤ʑͷ։ൃڥͰઃఆͯ͠Ε͍͍
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தͰศརͳίϚϯυΛհ͠·͢
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border/unborder ઢΛදࣔ/ඇදࣔ
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pclass ࢠؔ(inherits from)Λදࣔ
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pvc/pviews/ptv/pcells recursiveDiscription ͷ݁ՌΛ filtering
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presponder Responder Chain Λදࣔ
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bmessage ࢦఆͨ͠ selector ʹ breakpoint Λઃఆ
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visualize ը૾ͱͯ͠ग़ྗ
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taplog tap ͨ͠ object ͷ description Λදࣔ
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DEMO
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·ͱΊ chisel Λ͏ͱϓϩδΣΫτʹ ࠨӈ͞Εͳ͍σόοΫڥ͕ खʹ͍Γ·͢
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͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠