第12个boost::asio序列：基于epoll的事件循环反应式架构
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在epoll_reactor中，通过调用**epoll_wait(....)**来完成对I/O事件的监测，一旦检测到就绪事件，便将其纳入ops队列，静候调度器进行任务分配与执行。
void epoll_reactor::run(long usec, op_queue<operation>& ops)
{
// This code relies on the fact that the scheduler queues the reactor task
// behind all descriptor operations generated by this function. This means,
// that by the time we reach this point, any previously returned descriptor
// operations have already been dequeued. Therefore it is now safe for us to
// reuse and return them for the scheduler to queue again.
// Calculate ti全部评论 (0)
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