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WXMainThreadLagAnalyzer

自己开发并使用的一款iOS App主线程卡顿分析工具,目前初步实现如下功能:

  • 配置参数,如卡顿判定参数,产生的日志文件的最大数量,是否在release版本生效。
  • 通过视图上的开关,可以打开或关闭FPS监控和卡顿监控。
  • 在卡顿发生时,获得所有线程的即时堆栈,以供分析原因。
  • 在APP内查看日志文件,并通过AirDrop或是邮件,发送到工作电脑。
  • 开发者只需要将得到的日志文件存入指定目录,就可以自动得到符号化以后的日志文件。

安装

参照下面的步骤来安装并使用:

  • 将目录WXMainThreadLagAnalyzer加入到现有的工程里面,目前使用了PLCrashReporter提供的CrashReporter来得到堆栈,如果你的项目里也有这个framework,注意别加重复了。
  • 将symbolicatetool.zip解压到 ~/Downloads 目录
  • 将createdsym.py拷贝到项目的工程文件所在的目录,并在Build Phrases的最后,加一个Run Script,内容为:
    python ${PROJECT_DIR}/createdsym.py
  • 将AutoSymbolicate保存在你喜欢的位置,进入终端,cd到保存位置,运行./AutoSymbolicate

使用

1.配置并启动分析器

#import "AppDelegate.h"
#import "WXLagAnalyzer.h"

@interface AppDelegate ()

@end

@implementation AppDelegate


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    dispatch_async(dispatch_get_main_queue(), ^{
        WXLagAnalyzerConfig *config = [[WXLagAnalyzerConfig alloc] init];
        config.lagCriteria = 40;
        config.lagTimes = 2;
        config.maxNumberOfCrashReports = 5;
        config.checkDuplicate = NO;
        config.enableInReleaseBuild = YES;
        [WXLagAnalyzer startWithConfig: config];
    });
    
    return YES;
}

2.点击开关来打开FPS和主线程监控

3.卡顿出现以后,视图变为红色,此时可以点击进入查看


在此界面对一个条目进行左滑操作,可以进行“删除”操作。

4.在卡顿详情页面,点击右上角按钮可以传输到工作电脑上

5.将日志存入到~/Downloads/symbolicatetool/crashLog目录

运行的AutoSymbolicate小程序,将会监控到有日志文件被写入到上述目录,然后自动运行符号化过程。符号化以后的文件保存在~/Downloads/symbolicatetool/symbolicatecrashLog目录,并自动使用文本编辑程序打开,开发者可以直接查看。

参考

iOS实时卡顿监控

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