if (!poll_does_not_wait(p)) { //重要的是我们把&sock->wq.wait传给了poll_wait poll_wait(filp, &sock->wq.wait, p); ... } } //poll.h static inline void poll_wait(struct file * filp, wait_queue_head_t * wait_address, poll_table *p) { if (p && p->_qproc && wait_addre...
staticinlinevoidpoll_wait(structfile * filp,wait_queue_head_t* wait_address, poll_table *p){if(p && p->_qproc && wait_address) p->_qproc(filp, wait_address, p); }/* * Do not touch the structure directly, use the access functions * poll_does_not_wait() and poll_requested_event...
staticinlinevoidpoll_wait(structfile * filp,wait_queue_head_t* wait_address, poll_table *p){if(p && p->_qproc && wait_address) p->_qproc(filp, wait_address, p); }/* * Do not touch the structure directly, use the access functions * poll_does_not_wait() and poll_requested_event...
19. In ACF/TCAM, any po in t-to-po in t l in e configuration in which the station on the l in e does not use poll in g and address in g characters 在IBM的通信软件ACM/TCAM中,任何点到点的线路配置,其中线路上的站不使用轮询法和寻址字符。
562 * we can recurse on ep->poll_wait.lock, and a non-raw spinlock can 563 * schedule() in the -rt kernel, the per-cpu variable are no longer 564 * protected. Thus, we are introducing a per eventpoll nest field. 565 * If we are not being call from ep_poll_callback(), ...
If the Timeout parameter value is -1, the poll subroutine does not return until at least one of the specified events has occurred. If the value of the Timeout parameter is 0, the poll subroutine does not wait for an event to occur but returns immediately, even if none of the specified...
routine below from a thead , it does not Bock waiting on the interrupt...instead it ruturns immediately and indicates that an interrupt was encountered but there is none because the line is tied low... Any suggestions on what might be wrong below or with this wait / poll process ???
When a write() can be successfully issued without blocking (or, for nonblocking, so it does not return [EWOULDBLOCK]). Completion of a non-blocking connect() call on a socket descriptor. This allows an application to set a socket descriptor to nonblocking (with fcntl() or ioctl()), issue...
with YOU. I'm not feeling this because you're leaving, and not because it feels good to feel this way... which, by the way, it does, or did before you went off like that. I can't figure out the mathematics of this, I just know I love you. I can't believe how many times ...
timeout || signal_pending(current)) break; count = wait-error; if (count) break; timeout = schedule_timeout(timeout); } current-state = TASK_RUNNING; return count; } 使用copy_from_user从用户空间拷贝fd_set到内核空间 注册回调函数__pollwait 遍历所有fd,调用其对应的poll方法(对于socket,这个...