Interpreter: fix fiber's resumable property #14252
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Fibers in the interpreted code are backed by real fibers run by the interpreter. The fiber context is thus fake in the interpreted code, and the resumable property should directly target the real fiber's context. Also explains why we call `Fiber#resume`.
The spec fails with the interpreter for the current crystal (1.11), but succeeds with this patch (or when compiled with any older version).
straight-shoota
approved these changes
Jan 24, 2024
|
@beta-ziliani I just added a test. It fails with the interpreter of crystal 1.11 but succeeds otherwise (this patch, or when compiled). |
Co-authored-by: Sijawusz Pur Rahnama <sija@sija.pl>
ysbaddaden
commented
Jan 24, 2024
Co-authored-by: Johannes Müller <straightshoota@gmail.com>
beta-ziliani
approved these changes
Jan 30, 2024
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The
resumableproperty of fiber contexts was wrong in interpreted code: it was never reset to0.This patch lets the interpreted fiber read the resumable property of the interpreter's fiber (the real one) though a new primitive. The interpreter is now responsible from reporting the value properly. This avoids having to manipulate
resumablein the interpreted code, and allows to act on the actual state.Alternative: the interpreter could set the
resumableproperties of the fibers in theinterpreter_swapcontextprimitive, it would be fake but probably not critical (the interpreter's scheduler would still act on the real property), but we don't have references back into the interpreted fibers (we could add it when interpreted) + I don't know how the interpreter updates values into an interpreted type (I could learn).