先看代码:
//设置可以同时激活的线程池的请求数。 bool pool=thread pool.setmaxthreads (8,8 ); if(pool ) thread pool.queueuserworkitem (o=this.do something long ('参数1 ' ) ); thread pool.queueuserworkitem ((o=this.do something long ) )、参数2 ); thread pool.queueuserworkitem ((o=this.do something long ) )、参数3 ); thread pool.queueuserworkitem ((o=this.do something long ) (参数4 ) ); thread pool.queueuserworkitem ((o=this.do something long ) )、参数5 ); thread pool.queueuserworkitem ((o=this.do something long ) (参数6 ) ); thread pool.queueuserworkitem ((o=this.do something long ('参数7 ) ); thread pool.queueuserworkitem ((o=this.do something long ) ),参数8 ); thread pool.queueuserworkitem ((o=this.do something long ) (参数9 ) ); thread pool.queueuserworkitem ((o=this.do something long ('参数10 ' ) ); thread pool.queueuserworkitem ((o=this.do something long ('参数11 ' ) ); (;上面代码先设置线程池中最大并发量为8个,然后通过QueueUserWorkItem向线程池中添加11个方法,运行,输出结果:
可以看出,先运行了8个,当有一个任务结束后线程池中有空闲线程时,排队的下一个任务才会执行,
把最大并发量改成9试试:
//设置可以同时激活的线程池的请求数。 bool pool=thread pool.setmaxthreads (9,9 ); if(pool ) thread pool.queueuserworkitem (o=this.do something long ('参数1 ' ) ); thread pool.queueuserworkitem ((o=this.do something long ) )、参数2 ); thread pool.queueuserworkitem ((o=this.do something long ) )、参数3 ); thread pool.queueuserworkitem ((o=this.do something long ) (参数4 ) ); thread pool.queueuserworkitem ((o=this.do something long ) )、参数5 ); thread pool.queueuserworkitem ((o=this.do something long ) (参数6 ) ); thread pool.queueuserworkitem ((o=this.do something long ('参数7 ) ); thread pool.queueuserworkitem ((o=this.do something long ) ),参数8 ); thread pool.queueuserworkitem ((o=this.do something long ) (参数9 ) ); thread pool.queueuserworkitem ((o=this.do something long ('参数10 ' ) ); thread pool.queueuserworkitem ((o=this.do something long ('参数11 ' ) ); (; } 运行结果:
果然没错,这次是先执行9个,当有空闲线程时再执行下一个
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