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发布时间:2015-07-23 14:11:30
<p><span>Linux</span><span style="font-family:宋体;">中信号量是一种睡眠锁。</span><span></span></p><p><span> </span></p><p><span style="font-family:宋体;">信号量基本使用形式:</span><span><br />static DECLARE_MUTEX(mr_sem);</span></p><p><span>down_interruptible(&mr_sem);</spa.........【阅读全文】