samiandClaude Sonnet 5
6d7c4f7bc4
Introduces the four rpc-layer seams docs/08-porting.md calls for this lane: platform::Wakeup (eventfd), platform::peer_of (SO_PEERCRED/struct ucred, same-UID check preserved unchanged), platform::acquire_instance_lock (abstract-namespace socket), platform::runtime_base_dir/data_base_dir (XDG lookups). Today's Linux code moves unchanged into daemon/src/rpc/platform/linux/; the seam headers carry no OS types and no #ifdef. No fifth interface for timerfd: EventLoop gains a portable add_timer() that folds the next deadline into poll()'s own timeout, replacing both timerfd instances in main.cpp — the loop already computes a deadline, so this needs no per-OS backend at all. Full suite 59/59 green; no #ifdef outside platform/linux/, no behaviour change. Co-Authored-By: Claude Sonnet 5 <[email protected]>
37 lines
1.1 KiB
C++
37 lines
1.1 KiB
C++
#pragma once
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// The event-loop wakeup primitive (docs/adr/0020, docs/08-porting.md). EventLoop uses this
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// to interrupt a blocked poll() from another thread or a signal handler — the eventfd
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// mechanics themselves are Linux-only; every other OS backend just needs something
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// poll()-able that signal()/drain() can drive the same way (docs/08 §"The seams": a
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// self-pipe on macOS, an event object on Windows).
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//
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// One implementation file per OS under platform/<os>/wakeup.cpp; this header carries no
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// OS types and no #ifdef (ADR 0020 decision 1).
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namespace velox::daemon::rpc::platform {
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class Wakeup {
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public:
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Wakeup();
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~Wakeup();
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Wakeup(const Wakeup&) = delete;
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Wakeup& operator=(const Wakeup&) = delete;
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// The fd to register with poll(2) for readability.
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int pollfd() const noexcept { return fd_; }
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// Make pollfd() readable. Async-signal-safe and thread-safe.
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void signal() noexcept;
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// Drain whatever signal() queued so pollfd() stops being readable. Call this from the
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// loop thread once pollfd() fires.
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void drain() noexcept;
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private:
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int fd_ = -1;
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};
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} // namespace velox::daemon::rpc::platform
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