BlockCanary原始碼解析

隨著**複雜度越來越大，我們越來越難定位到ui卡頓的問題，所以需要用到blockcanary來定位卡頓的原因

implementation 'com.github.markzhai:blockcanary-android:1.5.0'

blockcanary.install(this,new blockcanarycontext()).start();

public static blockcanary install(context context, blockcanarycontext blockcanarycontext) 

static void init(context context, blockcanarycontext blockcanarycontext) 
public static blockcanary get() 
}}

public blockcanaryinternals() }}

}}, getcontext().provideblockthreshold(), getcontext().stopwhendebugging()));
logwriter.cleanobsolete();
}

public void println(string x) 

if (!mprintingstarted) else 
stopdump();
}}

private void startdump() 

if (null != blockcanaryinternals.getinstance().cpusampler) 
}private void stopdump() 
if (null != blockcanaryinternals.getinstance().cpusampler) 
}

abstract class abstractsampler 

}};、

protected void dosample() 

if (mpid == 0) 
pidreader = new bufferedreader(new inputstreamreader(
new fileinputstream("/proc/" + mpid + "/stat")), buffer_size);
string pidcpurate = pidreader.readline();
if (pidcpurate == null) 
parse(cpurate, pidcpurate);
} catch (throwable throwable) finally 
if (pidreader != null) 
} catch (ioexception exception) 
}}

stacksampler 的dosample 就是把卡頓的資訊通過linkedhashmap列印出來

protected void dosample() 

synchronized (sstackmap) 
sstackmap.put(system.currenttimemillis(), stringbuilder.tostring());
}}

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