LLDB调试
常用指令
continue / c 执行到下一个断点
next / n 单步运行 把子函数当作整体
step / s 单步运行 遇到函数会进去
memory read / x 读取内存地址中的值
增加断点的方法
@implementation ViewController
- (void)lldbDemo:(id)parame {}
void test() {}
breakpoint set -n
$breakpoint set -n test
breakpoint set -n
$breakpoint set -n "-[ViewController lldbDemo:]"
b -n
$b -n "-[ViewController lldbDemo:]"
b -[ViewController touchesBegan:withEvent:]
$b -[ViewController lldbDemo:]
breakpoint set --selector / b
将所有的同名方法都加断点
$breakpoint set --selector lldbDemo
$b lldbDemo
breakpoint set --file --selector
$breakpoint set --file ViewController.m --selector lldbDemo:
breakpoint list / break list
$break list
Current breakpoints:1: file = '~/ViewController.m', line = 27, exact_match = 0, locations = 1, resolved = 1, hit count = 1
1.1: where = lldbDemo`-[ViewController touchesBegan:withEvent:] + 80 at ViewController.m:28, address = 0x00000001087b1730, resolved, hit count = 1 2: name = '-[ViewController lldbDemo:]', locations = 1, resolved = 1, hit count = 0
2.1: where = lldbDemo`-[ViewController lldbDemo:] + 47 at ViewController.m:24, address = 0x00000001087b16cf, resolved, hit count = 0
breakpoint disable / break dis breakpoint enable / break en
$break dis 1.1
$break en 2.1
Current breakpoints:1: file = '~/ViewController.m', line = 27, exact_match = 0, locations = 1
1.1: where = lldbDemo`-[ViewController touchesBegan:withEvent:] + 80 at ViewController.m:28, address = 0x00000001087b1730, unresolved, hit count = 1 2: name = '-[ViewController lldbDemo:]', locations = 1, resolved = 1, hit count = 0 Options: disabled
2.1: where = lldbDemo`-[ViewController lldbDemo:] + 47 at ViewController.m:24, address = 0x00000001087b16cf, resolved, hit count = 0 Options: enabled
breakpoint delete
只能删除整个大类，删除分类时只是将分类设为disable
$breakpoint delete
About to delete all breakpoints, do you want to do that?: [Y/n]
$breakpoint delete 1.1
1.1: where = lldbDemo`-[ViewController touchesBegan:withEvent:] + 80 at ViewController.m:28, address = 0x00000001087b1730, unresolved, hit count = 1 2: name = '-[ViewController lldbDemo:]', locations = 1, resolved = 1, hit count = 0 Options: disabled
breakpoint set -r
遍历满足项目中所有方法的关键字
$breakpoint set -r touches
Breakpoint 5: 359 locations.
修改参数值
expression / p
#import "Person.h"
@implementation ViewController
- (void)viewDidLoad {
Person *p = [[Person alloc] init];
[self.personModels addObject:p];
}
$p (Person *)self.personModels.firstObject //获取参数内存地址
(Person *) $1 = 0x000060000002fe20
$p $1 .name = @"" //修改属性
$p &person->_name //查看属性
断点轨迹调试
backTrack / bt
查看断点历史轨迹
$bt
* thread #1, queue = 'com.apple.main-thread', stop reason = breakpoint 1.1 * frame #0: 0x000000010b43e730 lldbDemo`-[ViewController touchesBegan:withEvent:](self=0x00007fdc3f60d7c0, _cmd="touchesBegan:withEvent:", touches=1 element, event=0x000060800011c170) at ViewController.m:28
frame #1: 0x000000010c8077c7 UIKit`forwardTouchMethod + 340
frame #2: 0x000000010c807662 UIKit`-[UIResponder touchesBegan:withEvent:] + 49
frame #3: 0x000000010c64fe7a UIKit`-[UIWindow _sendTouchesForEvent:] + 2052
frame #4: 0x000000010c651821 UIKit`-[UIWindow sendEvent:] + 4086
frame #5: 0x000000010c5f5370 UIKit`-[UIApplication sendEvent:] + 352
frame #6: 0x000000010cf3657f UIKit`__dispatchPreprocessedEventFromEventQueue + 2796
frame #7: 0x000000010cf39194 UIKit`__handleEventQueueInternal + 5949
frame #8: 0x000000010eec7bb1 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
frame #9: 0x000000010eeac4af CoreFoundation`__CFRunLoopDoSources0 + 271
frame #10: 0x000000010eeaba6f CoreFoundation`__CFRunLoopRun + 1263
frame #11: 0x000000010eeab30b CoreFoundation`CFRunLoopRunSpecific + 635
frame #12: 0x0000000111813a73 GraphicsServices`GSEventRunModal + 62
frame #13: 0x000000010c5da0b7 UIKit`UIApplicationMain + 159
frame #14: 0x000000010b43e7bf lldbDemo`main(argc=1, argv=0x00007ffee47c1060) at main.m:14
frame #15: 0x0000000110102955 libdyld.dylib`start + 1
up down
更改断点位置
frame select
直接跳到指定断点
$frame select 2
frame variable
打印断点所在位置的所有属性
$frame variable
(ViewController *) self = 0x00007fdc3f60d7c0
(SEL) _cmd = "touchesBegan:withEvent:"
(__NSSetM *) touches = 0x000060400002b940 1 element
(UITouchesEvent *) event = 0x000060800011c170
thread return
断点执行到上一个，但是结束断点之后不会在执行之后的代码
观察内存断点
watchpoint set variable
$watchpoint set variable p->_name //当name属性的值发生变化时，断点自动执行到当前函数中
watchpoint set expression
通过内存地址添加观察断点
$watchpoint set expression 0x000060400003c808
watchpoint list
watchpoint delete
使用方法参考breakpoint
添加指令
break command add
$break list
1.1 ...
2.1...
$break command add 1.1
Enter your debugger command(s). Type 'DONE' to end.
> frame variable // 输入要执行的代码
break command list
break command delete
$break command list 1.1
Breakpoint 1.1:
Breakpoint commands:
frame variable
target stop-hook add / target stop-hook add -o
将所有断点都添加指令
$target stop-hook add -o "frame variable"
target stop-hook list
target stop-hook delete / undisplay
target stop-hook disable
查看异常指针
'NSRangeException', reason: '*** -[__NSArray0 objectAtIndex:]: index 0 beyond bounds for empty NSArray'
*** First throw call stack:
( 0 CoreFoundation 0x00000001068711e6 __exceptionPreprocess + 294
1 libobjc.A.dylib 0x0000000105f06031 objc_exception_throw + 48
2 CoreFoundation 0x0000000106889e3d -[__NSArray0 objectAtIndex:] + 93
3 lldbDemo 0x00000001056066d1 -[ViewController touchesBegan:withEvent:] + 129
4 UIKit 0x0000000106f1b7c7 forwardTouchMethod + 340
5 UIKit 0x0000000106f1b662 -[UIResponder touchesBegan:withEvent:] + 49
6 UIKit 0x0000000106d63e7a -[UIWindow _sendTouchesForEvent:] + 2052
7 UIKit 0x0000000106d65821 -[UIWindow sendEvent:] + 4086
8 UIKit 0x0000000106d09370 -[UIApplication sendEvent:] + 352
9 UIKit 0x000000010764a57f __dispatchPreprocessedEventFromEventQueue + 2796
10 UIKit 0x000000010764d194 __handleEventQueueInternal + 5949
11 CoreFoundation 0x0000000106813bb1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
12 CoreFoundation 0x00000001067f84af __CFRunLoopDoSources0 + 271
13 CoreFoundation 0x00000001067f7a6f __CFRunLoopRun + 1263
14 CoreFoundation 0x00000001067f730b CFRunLoopRunSpecific + 635
15 GraphicsServices 0x000000010b9dba73 GSEventRunModal + 62
16 UIKit 0x0000000106cee0b7 UIApplicationMain + 159
17 lldbDemo 0x000000010560679f main + 111
18 libdyld.dylib 0x000000010a2ca955 start + 1
19 ??? 0x0000000000000001 0x0 + 1 )
image lookup -a
查看异常指针
$image lookup -a 0x00000001056066d1
Address: lldbDemo[0x00000001000016d1] (lldbDemo.__TEXT.__text + 257) Summary: lldbDemo`-[ViewController touchesBegan:withEvent:] + 129 at ViewController.m:28
image lookup -t
查看一个类信息
$image lookup -t ViewController
Best match found in ~/lldbDemo.app/lldbDemo: id = {0x10000002b}, name = "ViewController", byte-size = 8, decl = ViewController.h:11, compiler_type = "@interface ViewController : UIViewController @end"
