產(chǎn)品詳情


? 等待喚醒:設(shè)備可以使用時(shí),喚醒進(jìn)入休眠態(tài)的進(jìn)程 可以喚醒處于TASK_INTERRUPTIBLE和TASK_UNINTERRUPTIBLE狀態(tài)的進(jìn)程 void
remove_wait_queue( wait_queue_head_t *q, wait_queue_t *wait) 參數(shù)q:要?jiǎng)h除的等待隊(duì)列項(xiàng)所處的等待隊(duì)列頭 參數(shù)wait:要?jiǎng)h除的等待隊(duì)列項(xiàng) wake_up(wait_queue_head_t


? 等待事件:除主動(dòng)喚醒以外,也可設(shè)置等待隊(duì)列等待某個(gè)事件,當(dāng)該事件滿足以后就自動(dòng)喚醒等待隊(duì)列中的進(jìn)程 等待以wq為等待隊(duì)列頭的等待隊(duì)列被喚醒,前提是condition條件滿足,否則一直阻塞 函數(shù)會(huì)將進(jìn)程設(shè)置為TASK_UNINTERRUPTIBLE狀態(tài) wait_event(wq,
*q) 只能喚醒處于 TASK_INTERRUPTIBLE 狀態(tài)的進(jìn)程 void wake_up_interruptible(wait_queue_head_t *q) condition) wait_event_timeout(wq,

timeout) 等待以wq為等待隊(duì)列頭的等待隊(duì)列被喚醒,前提是condition條件滿足,否則一直阻塞 函數(shù)會(huì)將進(jìn)程設(shè)置為TASK_INTERRUPTIBLE狀態(tài)(即可被信號(hào)打斷) wait_event_interruptible(wq,

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