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2016/08/20 iOS Developers Conference Japan
@dealforest
Toshihiro Morimoto
XcodeͰշదͳσόοάϥΠϑΛ͍ٻΊΔ
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Έͳ͞Μ
͜Μͳܦݧ͋Γ·ͤΜ͔ʁ
ࣗݾհ
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8PSLT
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͍͟ϦϦʔε͞ΕΔͱ...
9DPEF1MVHJO
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ͦ͏Ͱ͢ɺצͷ͍͍Έͳ͞Μ͓͔ΓͰ͢Ͷ
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Xcode 8 ͔Β
Xcode Plugin ͕ಈ͔ͳ͘ͳΓ·ͨ͠
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RIP Xcode Plugin
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͍ɺ͜Ε͔ΒຊͰ͢
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XcodeͰշదͳσόοάϥΠϑΛ͍ٻΊΔ
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iOS ΤϯδχΞʹͱͬͯ Xcode ͱ
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࢜ʹͱͬͯͷ
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ྉཧਓʹͱͬͯͷแஸ
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Xcode ͳͯ͘͠ iOS ։ൃͰ͖·ͤΜ
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Xcode ͷػೳΛ׆༻͢Ε
σόοά͕վળ͞ΕΔ߹͕ଟʑ͋Γ·͢
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ϓϩάϥϛϯάͷେσόοάͩͱ
ࢥ͍ͬͯ·͢
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ݪҼʹͨͲΓͭͨ͘Ίʹ
ใ͕ଟ͍ʹӽͨ͜͠ͱ͋Γ·ͤΜ
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ͱ͍͏͜ͱͰ
ීஈ͍ͯ͠Δσόοάͷ tips Λ
հ͍͖͍ͯͨ͠ͱࢥ͍·͢
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• Ϋϥογϡͨ͠Β AppDelegate ͩͬͨ
• Ͳͷ ViewController ͔Θ͔Βͳ͍
• ىಈ࣌ʹಛఆͷ ViewController ʹ͍ͨ͠
• ࣮ػͷϩάϑΝΠϧΛऔಘ͍ͨ͠
ຊͷ͓͠ͳ͕͖
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Ϋϥογϡͨ͠Β AppDelegate ͩͬͨ
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Ϋϥογϡͨ͠Β AppDelegate ͩͬͨ
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͘͠Ξηϯϒϥͩͬͨ
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• Exception Breakpoint ΛՃ
• Diagonostics Λઃఆ
ղܾํ๏
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Exception Breakpoint ΛՃ
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Exception Breakpoint Λઃఆ͓ͯ͘͠ͱɹɹ
exception ͕ൃੜͨ͠λΠϛϯάͰ Break ͯ͘͠ΕΔ
Exception Breakpoint ΛՃ
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্ͨͩ͠ख͑͘ͳ͍έʔε͋ͬͯ
Exception લఏͷίʔυ͕ॻ͔Ε͍ͯΔͱ
ࠓճͷҙਤͱҧ͏λΠϛϯάͰ Break ͯ͠͠·͏
Exception Breakpoint ΛՃ
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্ͨͩ͠ख͑͘ͳ͍έʔε͋ͬͯ
Exception લఏͷίʔυ͕ॻ͔Ε͍ͯΔͱ
ࠓճͷҙਤͱҧ͏λΠϛϯάͰ Break ͯ͠͠·͏
ex)
.storyboard ͕ͳ͚Ε .nib ʹϑΥʔϧόοΫ͢Δ
try ͰΩϟον͍ͯͯ͠ break ͯ͠͠·͏
Exception Breakpoint ΛՃ
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Diagonostics Λઃఆ
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•ෆਖ਼ͳϝϞϦૢ࡞Λݕ
•dynamic library ؔ࿈ͷϩΪϯά (dlopen, dlsym )
Diagonostics Λઃఆ
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Ͳ͏ઃఆ͍͍͔͔ͯ͠Βͳ͍…
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ͦΜͳΈͳ͞ΜͷͨΊͷΦεεϝͷઃఆͰ͢ ɹɹ
ʢXcode 7.3.1ʣ
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ύϑΥʔϚϯε͕ؾʹͳΔ߹
Enable Address Sanitizer ΛΦϑʹͯ͠Լ͍͞
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(lldb) po self
(lldb) memory history 0x61800000e080
thread ... name = 'Memory allocated at'
frame #0: 0x00000001051bba97 libclang_rt.asan_iossim_dynamic.dylib`wrap_calloc + 199
frame #1: 0x00000001064362fd libobjc.A.dylib`class_createInstance + 84
frame #2: 0x0000000106440dc7 libobjc.A.dylib`_objc_rootAlloc + 41
frame #3: 0x00000001072d6d25 UIKit`-[UIClassSwapper initWithCoder:] + 175
frame #4: 0x00000001074c731b UIKit`UINibDecoderDecodeObjectForValue + 683
...
Enable Address Sanitizer Λ༗ޮʹ͍ͯ͠Δͱ…
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Ͳͷ ViewController ͔Θ͔Βͳ͍
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मਖ਼ͨ͠ΓػೳՃ͠Α͏ͱࢥͬͨ࣌ʹ
Ͳͷ ViewController ͔Θ͔Βͳ͍
Ͳͷ ViewController ͔Θ͔Βͳ͍
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ͦΜͳܦݧ͋Γ·ͤΜ͔ʁʁ
Ͳͷ ViewController ͔Θ͔Βͳ͍
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ͰɺͲ͏͍͏ঢ়گͰى͜Δͷͱ͔
Ͳͷ ViewController ͔Θ͔Βͳ͍
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• ৽͍͠ϓϩδΣΫτʹؔΘΓ࢝Ίͨ࣌
• స৬͔ͨͬ͠ΓͰΑ͔͘Βͳ͍࣌
ɹ ͳͲͳͲ…
Ͳͷ ViewController ͔Θ͔Βͳ͍
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ͱ͍͑ϦϞʔτͰ࡞ۀ͍ͯ͠Δͱ
Ӧۀ࣌ؒ֎ʹɺΘ͟Θ͟ฉ͘ͷͳͱ…
Ͳͷ ViewController ͔Θ͔Βͳ͍
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Symbolic Breakpoint with action Λͬͯ
viewWillAppear / viewDidLoad ͕
࣮ߦ͞ΕͨλΠϛϯάͰϩάʹදࣔ͢Δ
ղܾํ๏
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Symbolic Breakpoint
ObjCͷ߹ viewWillApper: viewDidLoad
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(lldb) bt 0 // suggest
* thread #1: tid = 0x10503c9, 0x00000001088569f4
dealforest`ViewController.viewWillAppear(animated=false, self=0x000061800000e080)
-> () + 20 at ViewController.swift:19, queue = 'com.apple.main-thread', stop
reason = breakpoint 6.1
(lldb) po "[viewWillAppear] - \(self)”// custom format
"[viewWillAppear] - "
Action - Debugger Command
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viewDidLoad ͱ viewWillAppear Λ
ઃఆ͠ͱ͚େମϩάʹग़ྗ͞ΕΔͣ
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ཧ༝ͱͯ͠ ViewController Ͱ
࣮͓͔ͯ͠ͳ͍ͱ
Symbolic Breakpoint ͕ݺΕͳ͍ͨΊͰ͢
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viewDidLoad ͕ͳ͍͔͠Εͳ͍͠
viewWillAppear ͕ͳ͍͔͠Εͳ͍
Ͱ྆ํͳ͍ͷগͳ͍ͣ
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ϩά͕ᓔಃ͍͠ͱײͨ࣌͡
Breakpoint Λແޮʹ͢Δ͚ͩͰ͢
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νʔϜͰڞ༗͍ͨ͠߹
Breakpoint Λڞ༗͢Δ͜ͱ͕Ͱ͖·͢
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͓·͚
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ͳͥ bt 0 ͕͓͢͢Ίͳͷ͔ͱ͍͏ͱ
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Xcode Plugin - KZLinkedConsole ͱ
૬ੑ͕ͱ͍͍͔ͯΒͰ͢
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krzysztofzablocki / KZLinkedConsole
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(lldb) bt 0
* thread #1: tid = 0x10503c9, 0x00000001088569f4
dealforest`ViewController.viewWillAppear(animated=false,
self=0x000061800000e080) -> () + 20 at ViewController.swift:19, queue =
'com.apple.main-thread', stop reason = breakpoint 6.1
Action - Debugger Command
ϦϯΫʹͳΓλοϓ͢Δͱ։͚Δ
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ىಈ࣌ʹಛఆͷ ViewController ʹ͍ͨ͠
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ભҠ͕໘͍͘͞ը໘ͷػೳΛ
։ൃ͢Δ͜ͱʹͳΓ·ͨ͠
ىಈ࣌ʹಛఆͷ ViewController ʹ͍ͨ͠
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ىಈ࣌ʹಛఆͷ ViewController ʹ͍ͨ͠
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σόοά͢Δͱ͖ʹमਖ਼ͯ͠࠶ىಈ
ͦͷޙɺը໘·ͰભҠͯ͠…
͜ΕΛ܁Γฦ͢
ىಈ࣌ʹಛఆͷ ViewController ʹ͍ͨ͠
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ΊΜͲ͘͘͞ͳ͍Ͱ͔͢ʁʁ
ىಈ࣌ʹಛఆͷ ViewController ʹ͍ͨ͠
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Environment Variables Λ͍ɹɹɹɹɹɹɹɹɹɹɹɹ
֘͢Δ ViewController Λදࣔ͢Δ
ղܾํ๏
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DF_STORYBOARD_NAME = Main:settings
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දࣔ͢ΔॲཧΛdidFinishLaunchingWithOptions ʹՃ
if let env = NSProcessInfo().environment["DF_STORYBOARD_NAME"] {
let names = env.componentsSeparatedByString(":")
if let storyboardName = names.first {
let storyboard = UIStoryboard(name: storyboardName, bundle: nil)
let controller: UIViewController
if let identifier = names.last where identifier != storyboardName {
controller = storyboard
.instantiateViewControllerWithIdentifier(identifier)
}
else {
controller = storyboard.instantiateInitialViewController()!
}
window?.rootViewController = controller
}
}
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Xcode ͔Βىಈͨ࣌͠ͷΈ༗ޮ
App Switcher Ͱ kill ͯ͠ىಈ͠ͳ͓ͤແޮʹͳΔ
Environment Variables Λ͏ϝϦοτ
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Ұ࣌తͳذΛ࡞Γ͍ͨ࣌ʹ
ͱͯศར
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• ڧ੍తʹ logout
• API ͷϦΫΤετઌΛมߋ
• localhost:3000
• proxy
• ϩάϨϕϧͷΓସ͑
Environment Variables ͷ͍ॴ
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࣮ػͷϩάϑΝΠϧΛऔಘ͍ͨ͠
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ࣗલͰग़ྗ͍ͯ͠Δϩά͘͠
DBϑΝΠϧ(Realm, CoreData, SQLite…)Λ
Έ͍ͨ࣌͋Γ·͢ΑͶʁ
࣮ػͷϩάϑΝΠϧΛऔಘ͍ͨ͠
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ͱ͍͑औಘ͠Α͏ͱࢥ͏ͱ
݁ߏΊΜͲ͍͘͞
࣮ػͷϩάϑΝΠϧΛऔಘ͍ͨ͠
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• iExproler Λ͍ iPhone ΛϚϯτ͠औಘ
• PC ʹܨ͗ Xcode Ͱ Container Λऔಘɹɹɹɹ
(͜ͷ߹ɺ͕ࣗՃೖ͍ͯ͠ΔνʔϜͷΞϓϦͷΈͰ͢)
࣮ػͷϩάϑΝΠϧΛऔಘ͍ͨ͠
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໘͍͘͞Ͱ͢Ͷ…
ͬͱؾܰʹ͍ͨ͠ͷͰ͢
࣮ػͷϩάϑΝΠϧΛऔಘ͍ͨ͠
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LLDB Λͬͯ֘͢ΔϑΝΠϧΛ Slack ૹ৴
ղܾํ๏
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DEMO
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(lldb) slack “Documents/default.realm”
Please run ‘continue’
(lldb) continue
Process 25152 resuming
upload success
Slack ʹϑΝΠϧΛૹ৴
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Slack Ͱड͚औͬͨ࣌ͷը૾
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ศརͰ͠ΐʁʁ
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͍͍ͨͰ͢ΑͶʁʁ
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https://gist.github.com/dealforest/702a848ba0a7a64b139985f5cad885f0
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ίϚϯυΛಡΈࠐΉ
$ cat ~/.lldbinit
…
command script import /slack.py
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And more…
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• Xcode Functions
• memory visualizer
• Xcode Plugin
• LLDB
• p, po, frame variable
• watchpoint
• facebook/chisel
And more
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• Xcode Settings
- Diagonostics
- Environment Variables
• Breakpoint
- Exception Breakpoint
- Symbolic Breakpoint
• LLDB
Recap
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গ͠ͰΈͳ͞ΜͷσόοάαΠΫϧ͕ɹɹɹɹ
շదʹͳΕ͍Ͱ͢
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͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠
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͜ͷΑ͏ͳσόοάʹ·ͭΘΔΛɹɹɹɹ
ମܥཱͯͯձࣾͰ͢Α͏ͳ͜ͱ ɹɹɹɹ
͍ͯ͠ΔͷͰڵຯ͋Δํ͕͚Լ͍͞#
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