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Eventfd: Revision history

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22 May 2023

7 May 2023

  • curprev 22:0822:08, 7 May 2023‎ Dank talk contribs‎ 1,326 bytes +1,326‎ Created page with "Linux offers the eventfd abstraction for file descriptor-based userspace notification. It is backed by merely a single <tt>uint64_t</tt> in the kernel, unlike a pipe (which is usually backed by a much larger buffer). It is thus the most lightweight method of IPC available to userspace. The maximum value of the eventfd counter is 2^64-2 (0xfffffffffffffffe), and the minimum (and default) value is 0. In the past, a full pipe was often used to interrupt a th..."
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