原生
p/po 命令
p打印基本数据类型的值，查看对象返回对象的指针地址（不可以用宏）。po打印对象的描述，常量、变量、表达式返回的对象等。
(lldb) p p1 (Person *) $0 = 0x000061200023130 (lldb) po p1 <Person *): 0x000061200023130>
e 命令
给具体变量赋值。
if dataArray.count == 0 { print("dataArray is empty") }
在 if 处断点，控制台输入 e dataArray.count = 0 回车，继续运行即可。
call 命令
动态调用函数。
(lldb) po cell.contentView.subviews <__NSArrayM 0x60800005f5f0>( <UILabel: 0x7f91f4f18c90; frame = (5 5; 300 25); text = '2 - Drawing index is top ...'; userInteractionEnabled = NO; tag = 1; layer = <_UILabelLayer: 0x60800009ff40>>, <UIImageView: 0x7f91f4d20050; frame = (105 20; 85 85); opaque = NO; userInteractionEnabled = NO; tag = 2; layer = <CALayer: 0x60000003ff60>>, <UIImageView: 0x7f91f4f18f10; frame = (200 20; 85 85); opaque = NO; userInteractionEnabled = NO; tag = 3; layer = <CALayer: 0x608000039860>> ) (lldb) call [label removeFromSuperview] (lldb) po cell.contentView.subviews <__NSArrayM 0x600000246de0>( <UIImageView: 0x7f91f4d20050; frame = (105 20; 85 85); opaque = NO; userInteractionEnabled = NO; tag = 2; layer = <CALayer: 0x60000003ff60>>, <UIImageView: 0x7f91f4f18f10; frame = (200 20; 85 85); opaque = NO; userInteractionEnabled = NO; tag = 3; layer = <CALayer: 0x608000039860>> )
动态将 cell 的某个子视图移除。
bt 命令
打印线程的堆栈信息（bt all 打印全部线程堆栈信息）。
(lldb) bt * thread #1: tid = 0x27363, 0x000000010d204125 TestDemo`-[FifthViewController tableView:cellForRowAtIndexPath:](self=0x00007f91f4e153c0, _cmd="tableView:cellForRowAtIndexPath:", tableView=0x00007f91f5889600, indexPath=0xc000000000400016) + 2757 at FifthViewController.m:91, queue = 'com.apple.main-thread', stop reason = breakpoint 6.1 * frame #0: 0x000000010d204125 TestDemo`-[FifthViewController tableView:cellForRowAtIndexPath:](self=0x00007f91f4e153c0, _cmd="tableView:cellForRowAtIndexPath:", tableView=0x00007f91f5889600, indexPath=0xc000000000400016) + 2757 at FifthViewController.m:91 frame #1: 0x0000000111d0a7b5 UIKit`-[UITableView _createPreparedCellForGlobalRow:withIndexPath:willDisplay:] + 757 frame #2: 0x0000000111d0aa13 UIKit`-[UITableView _createPreparedCellForGlobalRow:willDisplay:] + 74 frame #3: 0x0000000111cde47d UIKit`-[UITableView _updateVisibleCellsNow:isRecursive:] + 3295 frame #4: 0x0000000111d13d95 UIKit`-[UITableView _performWithCachedTraitCollection:] + 110 frame #5: 0x0000000111cfa5ef UIKit`-[UITableView layoutSubviews] + 222 frame #6: 0x0000000111c61f50 UIKit`-[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 1237 frame #7: 0x00000001117a5cc4 QuartzCore`-[CALayer layoutSublayers] + 146 (lldb)
image 命令
列出当前 App 中的所有 module，可以查看某一个地址对应的代码位置。
image lookup -address
查找崩溃位置
0 CoreFoundation 0x0000000103209b0b __exceptionPreprocess + 171 1 libobjc.A.dylib 0x00000001079db141 objc_exception_throw + 48 2 CoreFoundation 0x000000010313effb -[__NSArrayM objectAtIndex:] + 203 3 DiDi 0x00000001009a9f3a -[FW_MyHomeTableView tableView:cellForRowAtIndexPath:] + 1322 4 UIKit 0x00000001055a2ab2 -[UITableView _createPreparedCellForGlobalRow:withIndexPath:willDisplay:] + 750 5 UIKit 0x00000001055a2cf8 -[UITableView _createPreparedCellForGlobalRow:willDisplay:] + 74 6 UIKit 0x0000000105577639 -[UITableView _updateVisibleCellsNow:isRecursive:] + 2845 7 UIKit 0x00000001055abccc -[UITableView _performWithCachedTraitCollection:] + 111 8 UIKit 0x0000000105592e7a -[UITableView layoutSubviews] + 233 9 UIKit 0x00000001054f955b -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 1268 10 QuartzCore 0x0000000105114904 -[CALayer layoutSublayers] + 146 image lookup -a 0x00000001009a9f3a Address: DiDi[0x0000000100609f3a] (DiDi.__TEXT.__text + 6323194) Summary: DiDi`-[FW_MyHomeTableView tableView:cellForRowAtIndexPath:] + 1322 at FW_MyHomeTableView.m:243
当遇到 crash 时，查看线程栈，只能看到栈帧的地址，使用 image lookup –address 地址 可以方便的定位到这个地址对应的代码行。
image lookup -name
查找方法来源。
(lldb) image lookup -n transformOtherModelToSuit: 1 match found in /Users/xxx/Library/Developer/Xcode/DerivedData/DiDi-cwpbvvyvqmeijmcjnneothzuthsy/Build/Products/Debug-iphonesimulator/DiDi.app/DiDi: Address: DiDi[0x0000000100293d60] (DiDi.__TEXT.__text + 2693664) Summary: DiDi`+[FW_BetFunction transformOtherModelToSuit:] at FW_BetFunction.m:107
image lookup –type
查看成员
(lldb) image lookup -t MatchEvent 1 match found in /Users/xxxx/Library/Developer/Xcode/DerivedData/DiDi-cwpbvvyvqmeijmcjnneothzuthsy/Build/Products/Debug-iphonesimulator/DiDi.app/DiDi: id = {0x00433d32}, name = "MatchEvent", byte-size = 48, decl = MatchEvent.h:11, compiler_type = "@interface MatchEvent : NSObject{ BOOL _isHome; NSString * _playerName; NSString * _timePoint; NSString * _eventType; NSString * _eventDesc; } @property ( getter = isHome,setter = setIsHome:,assign,readwrite,nonatomic ) BOOL isHome; @property ( getter = playerName,setter = setPlayerName:,readwrite,copy,nonatomic ) NSString * playerName; @property ( getter = timePoint,setter = setTimePoint:,readwrite,copy,nonatomic ) NSString * timePoint; @property ( getter = eventType,setter = setEventType:,readwrite,copy,nonatomic ) NSString * eventType; @property ( getter = eventDesc,setter = setEventDesc:,readwrite,copy,nonatomic ) NSString * eventDesc; @end"
breakpoint
breakpoint set -f xxx -l xxx
(lldb) breakpoint set -f FW_ProfilesDetailModel.m -l 95 Breakpoint 3: where = DiDi`-[FW_ProfilesDetailModel incomeRate] + 27 at FW_ProfilesDetailModel.m:96, address = 0x0000000105b404bb
breakpoint set -n func name
(lldb) breakpoint set -n viewDidLoad Breakpoint 4: 414 locations.
💡 Tips: 这里要说一下，xcode 其实也有函数名断点，不过用 breakpoint set -n 实现，比 xcode 下断点快 N 倍，不过 xcode 下的断点还给提示所有断到的位置。
breakpoint set -n "-[类名 方法名]"
(lldb) breakpoint set -n "-[FW_MyHomeViewController viewDidLoad]" Breakpoint 8: where = DiDi`-[FW_MyHomeViewController viewDidLoad] + 20 at FW_MyHomeViewController.m:58, address = 0x0000000105aec944
breakpoint set -c "xxxx"
条件断点操作。
breakpoint set -f FW_HomeCell.m -l 362 -c "width > 68" Breakpoint 5: where = DiDi`-[FW_HomeCell_HotBill setDataSource:] + 2006 at FW_HomeCell.m:363, address = 0x000000010d22e0a6
breakpoint list
查看断点列表。
(lldb) breakpoint list Current breakpoints: 8: name = '-[FW_MyHomeViewController viewDidLoad]', locations = 1, resolved = 1, hit count = 2 8.1: where = DiDi`-[FW_MyHomeViewController viewDidLoad] + 20 at FW_MyHomeViewController.m:58, address = 0x0000000105aec944, resolved, hit count = 2 9: file = '/Users/xxxx/didi-ios/DiDi/FollowWinner/Model/FW_HomeModel.m', line = 24, exact_match = 0, locations = 1, resolved = 1, hit count = 0 9.1: where = DiDi`+[FW_HomeModel_Rank parasWithDict:limitNickLength:] + 89 at FW_HomeModel.m:24, address = 0x00000001061bc169, resolved, hit count = 0
breakpoint disable/enable
禁用/启用断点。
//禁用断点 (lldb) breakpoint disable 9 1 breakpoints disabled. (lldb) breakpoint list Current breakpoints: 9: file = '/Users/zmz/didi-ios/DiDi/FollowWinner/Model/FW_HomeModel.m', line = 24, exact_match = 0, locations = 1 Options: disabled 9.1: where = DiDi`+[FW_HomeModel_Rank parasWithDict:limitNickLength:] + 89 at FW_HomeModel.m:24, address = 0x00000001061bc169, unresolved, hit count = 0 //启用断点 (lldb) breakpoint enable 9 1 breakpoints enabled. (lldb) breakpoint list Current breakpoints: 9: file = '/Users/zmz/didi-ios/DiDi/FollowWinner/Model/FW_HomeModel.m', line = 24, exact_match = 0, locations = 1, resolved = 1, hit count = 0 9.1: where = DiDi`+[FW_HomeModel_Rank parasWithDict:limitNickLength:] + 89 at FW_HomeModel.m:24, address = 0x00000001061bc169, resolved, hit count = 0
breakpoint delete
删除断点。
(lldb) breakpoint delete 8 1 breakpoints deleted; 0 breakpoint locations disabled. (lldb) breakpoint list Current breakpoints: 9: file = '/Users/xxxx/didi-ios/DiDi/FollowWinner/Model/FW_HomeModel.m', line = 24, exact_match = 0, locations = 1, resolved = 1, hit count = 0 9.1: where = DiDi`+[FW_HomeModel_Rank parasWithDict:limitNickLength:] + 89 at FW_HomeModel.m:24, address = 0x00000001061bc169, resolved, hit count = 0
command alias
自定义别名。
(lldb) command alias see thread backtrace (lldb) see 5 thread #5 frame #0: 0x000000010bd3544e libsystem_kernel.dylib`__workq_kernreturn + 10 frame #1: 0x000000010bd69621 libsystem_pthread.dylib`_pthread_wqthread + 1426 frame #2: 0x000000010bd6907d libsystem_pthread.dylib`start_wqthread + 13
command alias %1 %2
自定义别名带参数。
(lldb) command alias dlt breakpoint delete %1 (lldb) breakpoint list Current breakpoints: 3: file = 'JSONKit.m', line = 725, exact_match = 0, locations = 1, resolved = 1, hit count = 0 3.1: where = TEST`-[JKArray dealloc] + 20 at JSONKit.m:727, address = 0x00000001073360c4, resolved, hit count = 0 (lldb) dlt 3 1 breakpoints deleted; 0 breakpoint locations disabled.
lldb 初始化时会读取 ~/.lldbinit 文件，可以把简写命令写进此文件中。
- 打开终端，输入
vi ~/.lldbinit进入文件编辑。 - 写入自定义内容，如：
command alias 堆栈 thread backtrace。 - 然后
ESC键，出现冒号后输入wq，enter键保存并退出编辑。
menthods
打印当前对象的属性和方法。
(lldb) methods p1 <Person: 0x60000003eac0> : in Person: Properties: @property (copy, nonatomic) NSString* name; (@synthesize name = _name;) @property (nonatomic) long age; (@synthesize age = _age; ) Instance Methods: - (void) eat; (0x1098bf3e0) - (void) .cxx_destruct; (0x1098bf4fo) - (id) description; (0x1098bf410) - (id) name; (0x1098bf430) (NSObject . . )
pachtion
打印对象调用者及方法。
(lldb) pactions 0x7fcdhsja212728 <ViewController: 0x7fcdhsja212728>: login:
pclass
打印对象继承关系。
pcalss s Student | Preson | | NSObject
presponder
打印响应者链。
(lldb) presponder 0x7ff1ab5a6770 <UIView: 0x7ff1ab5a6770; frame = (75 362; 123 96); autoresize = RM+BM; layer = <CALayer: 0x7ff1ab5a10a0>> | <UIView: 0x7ff1ab5a6660; frame = (0 0; 320 568); autoresize = W+H; layer = <CALayer: 0x7ff1ab5a23c0>> | | <test.ViewController: 0x7ff1ab6380a0> | | | <UIWindow: 0x7ff1ab411de0; frame = (0 0; 320 568); gestureRecognizers = <NSArray: 0x7ff1ab409a20>; layer = <UIWindowLayer: 0x7ff1ab417a90>> | | | | <UIApplication: 0x7ff1ab528330> | | | | | <test.AppDelegate: 0x7ff1ab40f050>
search
搜索栈内控件及其子控件。
search UIButton <UIButton: 0x7fc373828111; frame = (0 0; 100 90); opaque = NO; autoresize = RM+BM; layer = <CALayer: 0x608000221060>>
lookup 搜索，可执行正则表达式。
