From f2a49032a698bd96b37e8df8f02ec403fd0bed0f Mon Sep 17 00:00:00 2001 From: eldritch horrors Date: Sun, 1 Sep 2024 01:37:10 +0200 Subject: libstore: turn Worker in a kj event loop user using a proper event loop basis we no longer have to worry about most of the intricacies of poll(), or platform-dependent replacements for it. we may even be able to use the event loop and its promise system for all of our scheduling in the future. we don't do any real async processing yet, this is just preparation to separate the first such change from the huge api design difference with the async framework we chose (kj from capnp): kj::Promise, unlike std::future, doesn't return exceptions unmangled. it instead wraps any non-kj exception into a kj exception, erasing all type information and preserving mostly the what() string in the process. this makes sense in the capnp rpc use case where unrestricted exception types can't be transferred, and since it moves error handling styles closer to a world we'd actually like there's no harm in doing it only here for now Change-Id: I20f888de74d525fb2db36ca30ebba4bcfe9cc838 --- src/libstore/build/worker.hh | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) (limited to 'src/libstore/build/worker.hh') diff --git a/src/libstore/build/worker.hh b/src/libstore/build/worker.hh index 9a6ed8449..6735ea0b9 100644 --- a/src/libstore/build/worker.hh +++ b/src/libstore/build/worker.hh @@ -9,6 +9,7 @@ #include "realisation.hh" #include +#include #include namespace nix { @@ -237,6 +238,7 @@ public: Store & store; Store & evalStore; + kj::AsyncIoContext & aio; struct HookState { std::unique_ptr instance; @@ -264,7 +266,7 @@ public: NotifyingCounter expectedNarSize{[this] { updateStatisticsLater(); }}; NotifyingCounter doneNarSize{[this] { updateStatisticsLater(); }}; - Worker(Store & store, Store & evalStore); + Worker(Store & store, Store & evalStore, kj::AsyncIoContext & aio); ~Worker(); /** -- cgit v1.2.3