Debugger の Tips

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1. Debugger ͷ Tips @dealforest Toshihro Morimoto 2013/11/13 potatotips #1 13೥11݄13೔ਫ༵೔

2. ࣗݾ঺հ http://about.me/dealforest iOS APP / Web Application(perl, ruby) / Flash

   @dealforest Toshihro Morimoto 13೥11݄13೔ਫ༵೔

3. Xcode ͷίϯιʔϧ্Ͱ௕͍ϝιουΛ ೖྗͨ͠ΓΊΜͲ͘͘͞ͳ͍Ͱ͔͢ʁ 13೥11݄13೔ਫ༵೔

4. 13೥11݄13೔ਫ༵೔

5. recursiveDescription ౳ʑ 13೥11݄13೔ਫ༵೔

6. ิ׬΋͞Εͳ͍ͷͰ Α͘λΠϙ͠·͢ 13೥11݄13೔ਫ༵೔

7. (lldb) po [[[UIApplication sharedApplication] keyWindow] recursiveDescription] (lldb) po [self.view recursiveDescription]

   13೥11݄13೔ਫ༵೔

8. ͳ͕͍... 13೥11݄13೔ਫ༵೔

9. ͜Μͳͷ ͏ͬͯΒΕͳ͍... 13೥11݄13೔ਫ༵೔

10. Ͱ͸Ͳ͏͢Ε͹ղܾ Ͱ͖Δͷ͔ 13೥11݄13೔ਫ༵೔

11. GDB, LLDB Ͱ Command Λఆٛ͠ ͯ΍Ε͹͍͍ͷͰ͢ 13೥11݄13೔ਫ༵೔

12. Commannd ͱ͸ p ΍ po(print-object) ͷ͜ͱͰ͢ 13೥11݄13೔ਫ༵೔

13. Debugger ʹΑͬͯఆٛͷ ࢓ํ͕͔ΘΓ·͢ 13೥11݄13೔ਫ༵೔

14. ࠓճఆٛ͢Δ Command •pv ίϚϯυΛఆٛ • (lldb) pv • po [[[UIApplication

    sharedApplication] keyWindow] recursiveDescription] ɹ Λ࣮ߦ • (lldb) pv self.view • po [self.view recursiveDescription] Λ࣮ߦ 13೥11݄13೔ਫ༵೔

15. GDB ͷ৔߹ ~/.gdbinit define pv if $argc == 0 po

    [[[UIApplication sharedApplication] keyWindow] recursiveDescription] end if $argc == 1 po [$arg0 recursiveDescription] end end 13೥11݄13೔ਫ༵೔

16. LLDB ͷ৔߹ ~/.lldbinit command regex pv \ 's/^[[:space:]]*$/ po [[[UIApplication

    sharedApplication] keyWindow] recursiveDescription]/' \ 's/^(.+)$/ po [%1 recursiveDescription]/' 13೥11݄13೔ਫ༵೔

17. (lldb) pv (lldb) pv self.view 13೥11݄13೔ਫ༵೔

18. \(^o^)/୤λΠϙ 13೥11݄13೔ਫ༵೔

19. ଞʹศརͳ Command ~/.gdbinit define st po [NSThread callStackSymbols] end ~/.lldbinit

    command regex st 's/^[[:space:]]*$/po [NSThread callStackSymbols]/' stacktrace Λදࣔ͢Δ 13೥11݄13೔ਫ༵೔

20. (lldb) st 13೥11݄13೔ਫ༵೔

21. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ 13೥11݄13೔ਫ༵೔