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http://man7.org/linux/man-pages/man7/epoll.7.html
The epoll API was introduced in Linux kernel 2.5.44. Support was added to glibc in version 2.3.2. CONFORMING TO top The epoll API is Linux-specific. Some other systems provide similar mechanisms, for example, FreeBSD has kqueue, and Solaris has /dev/poll. NOTES top
https://stackoverflow.com/questions/11936697/linux-device-driver-select-epoll-support
linux device driver select/epoll support. Ask Question Asked 7 years, 4 months ago. ... select, or epoll system call involving a file descriptor associated with the driver." So if I have hundreds of fd in my epoll call, every time I reach epoll(), this poll in the driver will be called for hundreds of times? ... the kernel will loop through all ...
https://en.wikipedia.org/wiki/Epoll
epoll is a Linux kernel system call for a scalable I/O event notification mechanism, first introduced in version 2.5.44 of the Linux kernel mainline. Its function is to monitor multiple file descriptors to see whether I/O is possible on any of them.
http://man7.org/linux/man-pages/man2/epoll_create.2.html
ENOMEM There was insufficient memory to create the kernel object. VERSIONS top epoll_create() was added to the kernel in version 2.6. Library support is provided in glibc starting with version 2.3.2. epoll_create1() was added to the kernel in version 2.6.27. Library support is provided in …
https://linux.die.net/man/2/epoll_create1
When all file descriptors referring to an epoll instance have been closed, the kernel destroys the instance and releases the associated resources for reuse. epoll_create1() If flags is 0, then, other than the fact that the obsolete size argument is dropped, epoll_create1() is the same as epoll_create().
https://github.com/rd235/libvpoll-eventfd
a patch for the Linux kernel to provide a new feature: eventfd-vpoll a library providing a nice interface to the new feature as well as an emulator in user space (which supports only some of the events, it is for backwards compatibility). This patch implements an extension of eventfd (EFD_VPOLL) to ...
https://linux.die.net/man/2/epoll_pwait
epoll_pwait() was added to Linux in kernel 2.6.19. Library support is provided in glibc starting with version 2.6. Conforming To. epoll_wait() is Linux-specific. Notes. While one thread is blocked in a call to epoll_pwait(), it is possible for another thread to add a file descriptor to the waited-upon epoll instance.
https://en.wikipedia.org/wiki/Linux_kernel_version_history
Versions 2.6.16 and 2.6.27 of the Linux kernel were unofficially supported in a long-term support (LTS) fashion, before a 2011 working group in the Linux Foundation started a formal long-term support …
http://davmac.org/davpage/linux/async-io.html
Asynchronous I/O and event notification on linux. Updated 15/6/2008: Added proper introduction, general cleanups, made the problems with POSIX AIO clearer. Updated 22/9/2009:Re-ordered the sections a bit, added information on the difference between edge- and level-triggered notification mechanisms, and added information on signalfd() and the "signal handler writes to pipe" techniques.
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