前一陣子使用JavaSim做一些Simulation時候發現, 當一次要重複Simulation時, 基於SimulationProcess 的 thread 會無法釋放,進而導致Server資源的浪費.解決方法是在 finalize 函式中對 mutex 做 notify(). 其實用OpenSource 的Project 要有Debug的能力, 因為通常沒有足夠的文件或是註解可以說明, 不過爬code也是很有趣的...
org.javasim.SimulationProcess.finalize ()
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| public void finalize () | |
| { | |
| if (!terminated) | |
| { | |
| terminated = true; | |
| passivated = true; | |
| wakeuptime = SimulationProcess.NEVER; | |
| if (!idle()) | |
| Scheduler.unschedule(this); // remove from scheduler queue | |
| if (this == SimulationProcess.Current) | |
| { | |
| try | |
| { | |
| Scheduler.schedule(); | |
| } | |
| catch (SimulationException e) | |
| { | |
| } | |
| } | |
| SimulationProcess.allProcesses.remove(this); | |
| //ADD BY ARTHUR 20130419 Force finalize release thread. | |
| synchronized (mutex) | |
| { | |
| mutex.notify(); | |
| } | |
| } | |
| } |
另外每次Simulation調用Scheduler之後要呼叫 Scheduler.reset();才能做第二次的Simulation
