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Epoll event loop (linux)#14814

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ysbaddaden wants to merge 20 commits intocrystal-lang:mastercrystal-lang/crystal:masterfrom ysbaddaden:feature/epoll-event-loopysbaddaden/crystal:feature/epoll-event-loopCopy head branch name to clipboard

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Commits

Commits on Jul 15, 2024

• Fix: simplify IO::FileDescriptor#finalize

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Commits on Jul 16, 2024

• Fix: don't cancel timeout select action event twice

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• Add :evloop to Crystal.trace

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• Epoll: initial attempt (doesn't compile)

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• Fix: epoll_event is only packed on x86_64

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Commits on Jul 18, 2024

• Fix: disable EPOLLEXCLUSIVE for now

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• Fix: close in MT environment

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• Fix: add optional Crystal::EventLoop#after_fork_before_exec (MT)

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• Fix: after_fork (no MT) or after_fork_before_exec (MT only)

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• fixup! Fix: add optional Crystal::EventLoop#after_fork_before_exec (MT)

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• Prefer eventfd over pipe (only one fd, smaller struct in kernel)

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• Save pointer to Node instead of fd (skips searches after wait)

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• fixup! Save pointer to Node instead of fd (skips searches after wait)

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Commits on Jul 19, 2024

• fixup! Prefer eventfd over pipe (only one fd, smaller struct in kernel)

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• Add Crystal::System::EventFD abstraction

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• Use generic :system event type instead of :interrupt

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• fixup! Add Crystal::System::EventFD abstraction

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• Extract timers + cleanup + one timerfd per eventloop

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Commits on Jul 20, 2024

• Fix: also check that timers are empty (not only events)

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Commits on Jul 22, 2024

• Fix: missing mutex sync

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