搜索：fasync
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https://www.eeworm.com/dl/1011520.html
技术资料
linux中断、异步通知笔记
1）signal(SIGIO, sig_handler);
调用signal函数，让指定的信号SIGIO与处理函数sig_handler对应。
2）fcntl(fd, F_SET_OWNER, getpid());
指定一个进程作为文件的“属主(filp->owner)”，这样内核才知道信号要发给哪个进程。
3）f_flags = fcntl(fd, F_GETFL);
fcntl(fd, F_SETFL, f_flags | FASYNC);
...
https://www.eeworm.com/dl/635/209240.html
网络
LinCAN is a Linux kernel module that implements a CAN driver capable of working with multiple cards,
LinCAN is a Linux kernel module that implements a CAN driver capable of working with multiple cards, even with different chips and IO methods. Each communication object can be accessed from multiple applications concurrently.
It supports RT-Linux, 2.2, 2.4, and 2.6 with fully im ...