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refactor: remove EventFd::defuse() and EventFd::arm()#2452

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SteveLauC merged 2 commits intonix-rust:masterfrom
SteveLauC:fix/remove_arm_defuse_eventfd
Jun 17, 2024
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refactor: remove EventFd::defuse() and EventFd::arm()#2452
SteveLauC merged 2 commits intonix-rust:masterfrom
SteveLauC:fix/remove_arm_defuse_eventfd

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What does this PR do

  1. Remove EventFd::defuse() because it is a no-op, write(0)ing to an event fd does nothing. While in the documentation, it says:

    a following call to poll, select or epoll will block.

    which means that this method should reset the kernel counter to 0, but it won't.

  2. Remove EventFd::arm() for symmetry reasons.

Having read()/write() is already sufficient for usage.

Closes #2422

Checklist:

  • I have read CONTRIBUTING.md
  • I have written necessary tests and rustdoc comments
  • A change log has been added if this PR modifies nix's API

@SteveLauC SteveLauC enabled auto-merge June 17, 2024 00:21
@SteveLauC SteveLauC added this pull request to the merge queue Jun 17, 2024
Merged via the queue into nix-rust:master with commit 95bedfd Jun 17, 2024
@SteveLauC SteveLauC deleted the fix/remove_arm_defuse_eventfd branch June 17, 2024 00:53
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EventFd::defuse doesn't work

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