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redisson-future-promise.drawio
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<mxfile host="Electron" modified="2024-05-05T07:44:19.323Z" agent="Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) draw.io/21.6.5 Chrome/114.0.5735.243 Electron/25.3.1 Safari/537.36" etag="qsabSjx7u3I7-9xiycqv" version="21.6.5" type="device">
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<mxCell id="fmt0hhtX_X798YNu3B2O-2" value="<h1>Redisson Future<span style="font-weight: 400;">、</span>Promise模式（3.15.0）</h1><div>无论 Redisson Netty 的 RFuture/RPromise、Promise 还是 JDK&nbsp;CompletableFuture 都是基于观察者模式（注册监听、回调）。</div><p>前置知识：<br></p><ul><li>Netty Promise 模式</li><li>JDK1.8 CompletableFuture (Redisson Future整合了Netty Promise 和 CompletableFuture)</li></ul><p></p>" style="text;html=1;strokeColor=none;fillColor=none;spacing=5;spacingTop=-20;whiteSpace=wrap;overflow=hidden;rounded=0;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-7" value="<font color="#000000">promise = new RedissonPromise&lt;&gt;()</font><br><b>1 </b>基于事件通知获取异步结果" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-8" value="<div><font color="#000000">LISTENERS_FIELD = DefaultPromise.class.getDeclaredField("listeners");</font></div><div><font color="#000000">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; LISTENERS_FIELD.setAccessible(true)<br>Promise&lt;T&gt; promise = ImmediateEventExecutor.INSTANCE.newPromise()<br></font></div><div>这里可以看出依赖Netty Promise模式，<b>RedissonPromise继承CompletableFuture同时包含Netty&nbsp;DefaultPromise对象引用</b>(事件处理器是ImmediateEventExecutor)</div>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-11" value="lambda" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.75;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;fontSize=8;fontColor=#007FFF;strokeColor=#007FFF;dashed=1;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-12" target="fmt0hhtX_X798YNu3B2O-95">
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<mxCell id="fmt0hhtX_X798YNu3B2O-12" value="<font color="#000000">promise.onComplete((res, e) -&gt; {...})</font><br><font color="#007fff">2 注册回调处理结果，res是正常时返回的结果，e是异常时返回的异常对象</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fillColor=#d5e8d4;strokeColor=#82b366;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-14" value="<font color="#007fff">lambda</font>" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.5;exitY=1;exitDx=0;exitDy=0;fontSize=8;fontColor=#000000;strokeColor=#007FFF;dashed=1;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-15" target="fmt0hhtX_X798YNu3B2O-89">
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<mxCell id="fmt0hhtX_X798YNu3B2O-15" value="<font color="#000000">promise.addListener(f -&gt; {...})</font><br>f是GenericFutureListener实例" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-18" value="<font color="#000000">this.addListener0(listener)<br></font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-19" value="<div><font color="#000000">&nbsp; &nbsp; &nbsp; &nbsp; if (this.isDone()) {</font></div><div><font color="#000000">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; this.notifyListeners();</font></div><div><font color="#000000">&nbsp; &nbsp; &nbsp; &nbsp; }</font></div>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;align=left;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-20" value="<font color="#000000">DefaultPromise.java</font><br><font color="#000000">this.</font><b style="color: rgb(0 , 0 , 0)">listeners</b><font color="#000000"> = listener</font><br>依然是观察者模式，那就搜索下代码看哪里回调的listeners" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-25" value="<font color="#000000">观察者模式触发回调的时机</font><br><font color="#007fff">搜索源码搜索到4种</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fillColor=#fff2cc;strokeColor=#d6b656;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-26" value="<font color="#000000">setSuccess(V result)</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-29" value="<font color="#000000">trySuccess(V result)</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fillColor=#fff2cc;strokeColor=#d6b656;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-30" value="<font color="#000000">setFailure(Throwable cause)</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-31" value="<font color="#000000">tryFailure(Throwable cause)</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-34" value="promise.syncUninterruptibly()<br><font color="#007fff">3 同步阻塞直到完成（写入结果值或SUCCESS）</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fillColor=#f8cecc;strokeColor=#b85450;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-35" value="ret = promise.getNow()<br><font color="#007fff">5 读取DefaultPromise result结果</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fillColor=#ffe6cc;strokeColor=#d79b00;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-37" value="<font color="#000000">promise.trySuccess("success")</font><br><font color="#007fff">4 异步代码中业务成功后执行<br>将结果写入result字段，并通知所有监听器<br></font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fillColor=#fff2cc;strokeColor=#d6b656;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-39" value="<font color="#000000">complete(result)</font><br>结果同时写入CompletableFuture的result字段" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-41" value="<font color="#000000">this.setSuccess0(result)</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;" vertex="1" parent="1">
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<mxGeometry relative="1" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-43" value="<font color="#000000">this.setValue0(result == null ? SUCCESS : result)</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;" vertex="1" parent="1">
<mxGeometry x="1140" y="700" width="160" height="40" as="geometry" />
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<mxCell id="fmt0hhtX_X798YNu3B2O-44" value="Y" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;fontSize=8;fontColor=#000000;strokeColor=#000000;entryX=0;entryY=0.5;entryDx=0;entryDy=0;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-46" target="fmt0hhtX_X798YNu3B2O-50">
<mxGeometry relative="1" as="geometry">
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<mxCell id="fmt0hhtX_X798YNu3B2O-45" value="N" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.5;exitY=1;exitDx=0;exitDy=0;fontSize=8;fontColor=#000000;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-46" target="fmt0hhtX_X798YNu3B2O-47">
<mxGeometry relative="1" as="geometry" />
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<mxCell id="fmt0hhtX_X798YNu3B2O-46" value="<font style="font-size: 10px" color="#000000">CAS更新DefaultPromise result值 <br>从null -&gt; objResult 成功 或者 <br>从 UNCANCELLABLE -&gt; objResult 成功</font>" style="rhombus;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;rounded=1;" vertex="1" parent="1">
<mxGeometry x="1340" y="690" width="180" height="60" as="geometry" />
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<mxCell id="fmt0hhtX_X798YNu3B2O-47" value="<font color="#000000">return false</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;" vertex="1" parent="1">
<mxGeometry x="1350" y="780" width="160" height="40" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-48" value="" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;fontSize=10;fontColor=#000000;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-50" target="fmt0hhtX_X798YNu3B2O-52">
<mxGeometry relative="1" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-49" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=1;exitY=0.25;exitDx=0;exitDy=0;entryX=0;entryY=0.5;entryDx=0;entryDy=0;fontSize=8;fontColor=#007FFF;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-50" target="fmt0hhtX_X798YNu3B2O-116">
<mxGeometry relative="1" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-50" value="<div><font color="#000000">if (this.checkNotifyWaiters()) {</font></div><div><font color="#000000">&nbsp; &nbsp; this.<b>notifyListeners</b>();</font></div><div><font color="#000000">}<br>return true;</font></div>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;align=left;fillColor=#fff2cc;strokeColor=#d6b656;" vertex="1" parent="1">
<mxGeometry x="1560" y="690" width="160" height="60" as="geometry" />
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<mxCell id="fmt0hhtX_X798YNu3B2O-51" value="" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;fontSize=10;fontColor=#007FFF;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-52" target="fmt0hhtX_X798YNu3B2O-54">
<mxGeometry relative="1" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-52" value="<font color="#000000">EventExecutor <b>executor</b> = this.executor()</font><br>即ImmediateEventExecutor" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;align=center;" vertex="1" parent="1">
<mxGeometry x="1760" y="700" width="200" height="40" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-53" value="" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;fontSize=10;fontColor=#007FFF;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-54" target="fmt0hhtX_X798YNu3B2O-56">
<mxGeometry relative="1" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-54" value="<font color="#000000">InternalThreadLocalMap threadLocals = InternalThreadLocalMap.get()</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;align=center;" vertex="1" parent="1">
<mxGeometry x="1760" y="760" width="200" height="40" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-55" value="" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;fontSize=10;fontColor=#007FFF;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-56" target="fmt0hhtX_X798YNu3B2O-59">
<mxGeometry relative="1" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-56" value="<font color="#000000">int stackDepth = threadLocals.futureListenerStackDepth()</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;align=center;" vertex="1" parent="1">
<mxGeometry x="1760" y="820" width="200" height="40" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-57" value="Y" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=1;exitY=0.5;exitDx=0;exitDy=0;entryX=0;entryY=0.5;entryDx=0;entryDy=0;fontSize=8;fontColor=#000000;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-59" target="fmt0hhtX_X798YNu3B2O-61">
<mxGeometry relative="1" as="geometry">
<mxPoint x="1960" y="910" as="sourcePoint" />
</mxGeometry>
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-58" value="N" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;fontSize=8;fontColor=#000000;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-59" target="fmt0hhtX_X798YNu3B2O-69">
<mxGeometry relative="1" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-59" value="<font style="font-size: 8px" color="#000000">stackDepth &lt; <br>MAX_LISTENER_STACK_DEPTH</font>" style="rhombus;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;rounded=1;" vertex="1" parent="1">
<mxGeometry x="1795" y="890" width="130" height="60" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-60" value="" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;fontSize=8;fontColor=#000000;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-61" target="fmt0hhtX_X798YNu3B2O-64">
<mxGeometry relative="1" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-61" value="<font color="#000000">栈深度+1</font><br><font color="#cc0066">？？？</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;align=center;" vertex="1" parent="1">
<mxGeometry x="2000" y="900" width="80" height="40" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-62" value="" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;fontSize=8;fontColor=#000000;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-64" target="fmt0hhtX_X798YNu3B2O-66">
<mxGeometry relative="1" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-63" value="" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;fontSize=8;fontColor=#000000;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-64" target="fmt0hhtX_X798YNu3B2O-72">
<mxGeometry relative="1" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-64" value="<font color="#000000">this.notifyListenersNow()</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;align=center;fillColor=#fff2cc;strokeColor=#d6b656;" vertex="1" parent="1">
<mxGeometry x="1970" y="960" width="140" height="40" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-65" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=1;entryY=0.75;entryDx=0;entryDy=0;fontSize=8;fontColor=#000000;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-66" target="fmt0hhtX_X798YNu3B2O-50">
<mxGeometry relative="1" as="geometry">
<Array as="points">
<mxPoint x="2040" y="1080" />
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</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-66" value="<font color="#000000">栈深度-1</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;align=center;" vertex="1" parent="1">
<mxGeometry x="1970" y="1020" width="140" height="40" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-67" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=1;entryY=0.75;entryDx=0;entryDy=0;fontSize=8;fontColor=#000000;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-69" target="fmt0hhtX_X798YNu3B2O-50">
<mxGeometry relative="1" as="geometry">
<Array as="points">
<mxPoint x="1860" y="1210" />
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<mxCell id="fmt0hhtX_X798YNu3B2O-68" value="" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;fontSize=8;fontColor=#007FFF;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-69" target="fmt0hhtX_X798YNu3B2O-96">
<mxGeometry relative="1" as="geometry" />
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<mxCell id="fmt0hhtX_X798YNu3B2O-69" value="<font color="#000000">safeExecute(executor, new Runnable() {...})</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;align=center;fillColor=#fff2cc;strokeColor=#d6b656;" vertex="1" parent="1">
<mxGeometry x="1790" y="1160" width="140" height="40" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-70" value="Y" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=1;exitY=0.5;exitDx=0;exitDy=0;entryX=0;entryY=0.5;entryDx=0;entryDy=0;fontSize=8;fontColor=#000000;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-72" target="fmt0hhtX_X798YNu3B2O-75">
<mxGeometry relative="1" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-71" value="N" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;fontSize=8;fontColor=#000000;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-72" target="fmt0hhtX_X798YNu3B2O-78">
<mxGeometry relative="1" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-72" value="<font color="#000000">listeners instanceof DefaultFutureListeners</font>" style="rhombus;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;rounded=1;" vertex="1" parent="1">
<mxGeometry x="2160" y="940" width="120" height="80" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-73" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.5;exitY=1;exitDx=0;exitDy=0;fontSize=8;fontColor=#000000;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-75" target="fmt0hhtX_X798YNu3B2O-81">
<mxGeometry relative="1" as="geometry">
<Array as="points">
<mxPoint x="2400" y="1030" />
<mxPoint x="2320" y="1030" />
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<mxPoint x="2220" y="1110" />
</Array>
</mxGeometry>
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<mxCell id="fmt0hhtX_X798YNu3B2O-74" value="" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;fontSize=8;fontColor=#007FFF;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-75" target="fmt0hhtX_X798YNu3B2O-97">
<mxGeometry relative="1" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-75" value="<font color="#000000">this.notifyListeners0(<br>(DefaultFutureListeners)listeners)</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;align=center;fillColor=#fff2cc;strokeColor=#d6b656;" vertex="1" parent="1">
<mxGeometry x="2320" y="960" width="160" height="40" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-76" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;fontSize=8;fontColor=#000000;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-78" target="fmt0hhtX_X798YNu3B2O-81">
<mxGeometry relative="1" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-77" value="" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;fontSize=8;fontColor=#CC0066;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-78" target="fmt0hhtX_X798YNu3B2O-84">
<mxGeometry relative="1" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-78" value="<font color="#000000">notifyListener0(this, (GenericFutureListener)listeners)</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;align=center;fillColor=#fff2cc;strokeColor=#d6b656;" vertex="1" parent="1">
<mxGeometry x="2140" y="1060" width="160" height="40" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-79" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.5;exitY=1;exitDx=0;exitDy=0;fontSize=8;fontColor=#000000;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-80" target="fmt0hhtX_X798YNu3B2O-72">
<mxGeometry relative="1" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-80" value="<font color="#000000">synchronized 同步修改通知状态notifyingListeners</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;align=center;" vertex="1" parent="1">
<mxGeometry x="2140" y="900" width="160" height="20" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-81" value="<font color="#000000">synchronized 同步修改通知状态notifyingListeners</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;align=center;" vertex="1" parent="1">
<mxGeometry x="2140" y="1120" width="160" height="20" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-82" value="<font color="#007fff">这里有点窍门：<br>通过synchronized同步修改通知状态，然后再通过通知状态控制是否执行通知所有监听器，可以降低锁的粒度，提升并发性能</font>" style="text;html=1;strokeColor=none;fillColor=none;align=left;verticalAlign=middle;whiteSpace=wrap;rounded=0;fontSize=8;fontColor=#000000;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-83" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=1;exitY=0.5;exitDx=0;exitDy=0;fontSize=8;fontColor=#007FFF;strokeColor=#000000;entryX=0.75;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-84" target="fmt0hhtX_X798YNu3B2O-89">
<mxGeometry relative="1" as="geometry">
<mxPoint x="1130" y="570" as="targetPoint" />
<Array as="points">
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<mxCell id="fmt0hhtX_X798YNu3B2O-84" value="l.operationComplete(future)<br><font color="#007fff">即前面注册的GenericFutureListener</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;align=center;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-85" value="Y" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;fontSize=8;fontColor=#000000;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-87" target="fmt0hhtX_X798YNu3B2O-91">
<mxGeometry relative="1" as="geometry" />
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<mxCell id="fmt0hhtX_X798YNu3B2O-86" value="N" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;fontSize=8;fontColor=#000000;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-87" target="fmt0hhtX_X798YNu3B2O-94">
<mxGeometry relative="1" as="geometry" />
</mxCell>
<mxCell id="fmt0hhtX_X798YNu3B2O-87" value="<font color="#000000">!f.isSuccess()</font>" style="rhombus;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;rounded=1;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-88" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=1;exitY=0.5;exitDx=0;exitDy=0;entryX=0;entryY=0.5;entryDx=0;entryDy=0;fontSize=8;fontColor=#000000;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-89" target="fmt0hhtX_X798YNu3B2O-87">
<mxGeometry relative="1" as="geometry" />
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<mxCell id="fmt0hhtX_X798YNu3B2O-89" value="<font color="#000000">GenericFutureListener</font>" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;" vertex="1" parent="1">
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<mxCell id="fmt0hhtX_X798YNu3B2O-90" style="edgeStyle=orthogonalEdgeStyle;curved=1;rounded=0;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=1;entryDx=0;entryDy=0;fontSize=8;fontColor=#007FFF;strokeColor=#000000;" edge="1" parent="1" source="fmt0hhtX_X798YNu3B2O-91" target="fmt0hhtX_X798YNu3B2O-95">
<mxGeometry relative="1" as="geometry" />
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<mxCell id="fmt0hhtX_X798YNu3B2O-91" value="<font color="#000000">action.accept(null, f.cause())</font><br>promise收到失败的结果" style="rounded=1;whiteSpace=wrap;html=1;fontSize=10;fontColor=#007FFF;" vertex="1" parent="1">
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