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3.0.1-RC-SNAPSHOT
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< span id = "id1" > < / span > < h1 > 快速入门< a class = "headerlink" href = "#" title = "永久链接至标题" > ¶< / a > < / h1 >
< div class = "section" id = "demo" >
< span id = "demo" > < / span > < h2 > 1. 启动Demo< a class = "headerlink" href = "#demo" title = "永久链接至标题" > ¶< / a > < / h2 >
< div class = "highlight-java notranslate" > < div class = "highlight" > < pre > < span > < / span > < span class = "kn" > import< / span > < span class = "nn" > java.util.concurrent.TimeUnit< / span > < span class = "o" > ;< / span >
< span class = "kn" > import< / span > < span class = "nn" > java.util.concurrent.atomic.AtomicInteger< / span > < span class = "o" > ;< / span >
< span class = "kd" > public< / span > < span class = "kd" > class< / span > < span class = "nc" > Demo< / span > < span class = "o" > {< / span >
< span class = "kd" > static< / span > < span class = "kd" > class< / span > < span class = "nc" > Counter< / span > < span class = "o" > {< / span >
< span class = "kd" > private< / span > < span class = "kd" > static< / span > < span class = "n" > AtomicInteger< / span > < span class = "n" > count< / span > < span class = "o" > =< / span > < span class = "k" > new< / span > < span class = "n" > AtomicInteger< / span > < span class = "o" > (< / span > < span class = "mi" > 0< / span > < span class = "o" > );< / span >
< span class = "kd" > public< / span > < span class = "kd" > static< / span > < span class = "kt" > void< / span > < span class = "nf" > increment< / span > < span class = "o" > ()< / span > < span class = "o" > {< / span >
< span class = "n" > count< / span > < span class = "o" > .< / span > < span class = "na" > incrementAndGet< / span > < span class = "o" > ();< / span >
< span class = "o" > }< / span >
< span class = "kd" > public< / span > < span class = "kd" > static< / span > < span class = "kt" > int< / span > < span class = "nf" > value< / span > < span class = "o" > ()< / span > < span class = "o" > {< / span >
< span class = "k" > return< / span > < span class = "n" > count< / span > < span class = "o" > .< / span > < span class = "na" > get< / span > < span class = "o" > ();< / span >
< span class = "o" > }< / span >
< span class = "o" > }< / span >
< span class = "kd" > public< / span > < span class = "kd" > static< / span > < span class = "kt" > void< / span > < span class = "nf" > main< / span > < span class = "o" > (< / span > < span class = "n" > String< / span > < span class = "o" > []< / span > < span class = "n" > args< / span > < span class = "o" > )< / span > < span class = "kd" > throws< / span > < span class = "n" > InterruptedException< / span > < span class = "o" > {< / span >
< span class = "k" > while< / span > < span class = "o" > (< / span > < span class = "kc" > true< / span > < span class = "o" > )< / span > < span class = "o" > {< / span >
< span class = "n" > Counter< / span > < span class = "o" > .< / span > < span class = "na" > increment< / span > < span class = "o" > ();< / span >
< span class = "n" > System< / span > < span class = "o" > .< / span > < span class = "na" > out< / span > < span class = "o" > .< / span > < span class = "na" > println< / span > < span class = "o" > (< / span > < span class = "s" > " counter: " < / span > < span class = "o" > +< / span > < span class = "n" > Counter< / span > < span class = "o" > .< / span > < span class = "na" > value< / span > < span class = "o" > ());< / span >
< span class = "n" > TimeUnit< / span > < span class = "o" > .< / span > < span class = "na" > SECONDS< / span > < span class = "o" > .< / span > < span class = "na" > sleep< / span > < span class = "o" > (< / span > < span class = "mi" > 1< / span > < span class = "o" > );< / span >
< span class = "o" > }< / span >
< span class = "o" > }< / span >
< span class = "o" > }< / span >
< / pre > < / div >
< / div >
< p > 把上面的内容保存到< code class = "docutils literal notranslate" > < span class = "pre" > Demo.java< / span > < / code > 里，然后在命令行下编绎启动：< / p >
< div class = "highlight-bash notranslate" > < div class = "highlight" > < pre > < span > < / span > javac Demo.java
java Demo
< / pre > < / div >
< / div >
< p > 也可以把代码保存到IDE里， < / p >
< / div >
< div class = "section" id = "arthas" >
< span id = "arthas" > < / span > < h2 > 2. 启动arthas< a class = "headerlink" href = "#arthas" title = "永久链接至标题" > ¶< / a > < / h2 >
< div class = "section" id = "linux-unix-mac" >
< span id = "linux-unix-mac" > < / span > < h3 > Linux/Unix/Mac< a class = "headerlink" href = "#linux-unix-mac" title = "永久链接至标题" > ¶< / a > < / h3 >
< p > 在命令行下面执行：< / p >
< div class = "highlight-bash notranslate" > < div class = "highlight" > < pre > < span > < / span > ./as.sh
< / pre > < / div >
< / div >
< blockquote >
< div > 执行该脚本的用户需要和目标进程具有相同的权限。比如以< code class = "docutils literal notranslate" > < span class = "pre" > admin< / span > < / code > 用户来执行：
< code class = "docutils literal notranslate" > < span class = "pre" > sudo< / span > < span class = "pre" > su< / span > < span class = "pre" > admin< / span > < span class = "pre" > & & < / span > < span class = "pre" > ./as.sh< / span > < / code > 或 < code class = "docutils literal notranslate" > < span class = "pre" > sudo< / span > < span class = "pre" > -u< / span > < span class = "pre" > admin< / span > < span class = "pre" > -EH< / span > < span class = "pre" > ./as.sh< / span > < / code > 。
详细的启动脚本说明，请参考< a class = "reference internal" href = "start-arthas.html" > < span class = "doc" > 这里< / span > < / a > 。
如果attatch不上目标进程， < code class = "docutils literal notranslate" > < span class = "pre" > ~/logs/arthas/< / span > < / code > 目录下的日志。< / div > < / blockquote >
< p > 选择应用java进程： < / p >
< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > $ ./as.sh
Arthas script version: 3.0.2
Found existing java process, please choose one and hit RETURN.
* [1]: 95428
[2]: 22647 org.jetbrains.jps.cmdline.Launcher
[3]: 21736
[4]: 13560 Demo
< / pre > < / div >
< / div >
< p > Demo进程是第4个， ， ， ： < / p >
< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > Connecting to arthas server... current timestamp is 1536656867
Trying 127.0.0.1...
Connected to 127.0.0.1.
Escape character is ' ^]' .
,---. ,------. ,--------.,--. ,--. ,---. ,---.
/ O \ | .--. ' ' --. .--' | ' --' | / O \ ' .-'
| .-. || ' --' .' | | | .--. || .-. |`. `-.
| | | || |\ \ | | | | | || | | |.-' |
`--' `--' `--' ' --' `--' `--' `--' `--' `--' `-----'
wiki: https://alibaba.github.io/arthas
version: 3.0.1-RC-SNAPSHOT
pid: 13560
timestamp: 1536656867894
< / pre > < / div >
< / div >
< / div >
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< span id = "windows" > < / span > < h3 > Windows< a class = "headerlink" href = "#windows" title = "永久链接至标题" > ¶< / a > < / h3 >
< p > 打开Dos命令行窗口， < code class = "docutils literal notranslate" > < span class = "pre" > as.bat< / span > < / code > 。< / p >
< / div >
< / div >
< div class = "section" id = "dashboard" >
< span id = "dashboard" > < / span > < h2 > 3. 查看dashboard< a class = "headerlink" href = "#dashboard" title = "永久链接至标题" > ¶< / a > < / h2 >
< p > 输入< a class = "reference internal" href = "dashboard.html" > < span class = "doc" > dashboard< / span > < / a > ， < code class = "docutils literal notranslate" > < span class = "pre" > ctrl+c< / span > < / code > 可以中断执行。< / p >
< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > $ dashboard
ID NAME GROUP PRIORI STATE %CPU TIME INTERRU DAEMON
17 pool-2-thread-1 system 5 WAITIN 67 0:0 false false
27 Timer-for-arthas-dashb system 10 RUNNAB 32 0:0 false true
11 AsyncAppender-Worker-a system 9 WAITIN 0 0:0 false true
9 Attach Listener system 9 RUNNAB 0 0:0 false true
3 Finalizer system 8 WAITIN 0 0:0 false true
2 Reference Handler system 10 WAITIN 0 0:0 false true
4 Signal Dispatcher system 9 RUNNAB 0 0:0 false true
26 as-command-execute-dae system 10 TIMED_ 0 0:0 false true
13 job-timeout system 9 TIMED_ 0 0:0 false true
1 main main 5 TIMED_ 0 0:0 false false
14 nioEventLoopGroup-2-1 system 10 RUNNAB 0 0:0 false false
18 nioEventLoopGroup-2-2 system 10 RUNNAB 0 0:0 false false
23 nioEventLoopGroup-2-3 system 10 RUNNAB 0 0:0 false false
15 nioEventLoopGroup-3-1 system 10 RUNNAB 0 0:0 false false
Memory used total max usage GC
heap 32M 155M 1820M 1.77% gc.ps_scavenge.count 4
ps_eden_space 14M 65M 672M 2.21% gc.ps_scavenge.time(m 166
ps_survivor_space 4M 5M 5M s)
ps_old_gen 12M 85M 1365M 0.91% gc.ps_marksweep.count 0
nonheap 20M 23M -1 gc.ps_marksweep.time( 0
code_cache 3M 5M 240M 1.32% ms)
Runtime
os.name Mac OS X
os.version 10.13.4
java.version 1.8.0_162
java.home /Library/Java/JavaVir
tualMachines/jdk1.8.0
_162.jdk/Contents/Hom
e/jre
< / pre > < / div >
< / div >
< / div >
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< span id = "watch" > < / span > < h2 > 4. watch< a class = "headerlink" href = "#watch" title = "永久链接至标题" > ¶< / a > < / h2 >
< p > 通过< a class = "reference internal" href = "watch.html" > < span class = "doc" > watch< / span > < / a > 命令来查看< code class = "docutils literal notranslate" > < span class = "pre" > Counter.value()< / span > < / code > 函数的返回值：< / p >
< div class = "highlight-default notranslate" > < div class = "highlight" > < pre > < span > < / span > $ watch Demo$Counter value returnObj
Press Ctrl+C to abort.
Affect(class-cnt:1 , method-cnt:1) cost in 29 ms.
ts=2018-09-10 17:53:11;result=@Integer[621]
ts=2018-09-10 17:53:12;result=@Integer[622]
ts=2018-09-10 17:53:13;result=@Integer[623]
ts=2018-09-10 17:53:14;result=@Integer[624]
ts=2018-09-10 17:53:15;result=@Integer[625]
< / pre > < / div >
< / div >
< p > 更多的功能可以查看< a class = "reference internal" href = "advanced-use.html" > < span class = "doc" > 进阶使用< / span > < / a > 。< / p >
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