runtime: I/O API + simulator - #5658

Draft

kim wants to merge 49 commits into

Commits on Aug 26, 2026

WIP: I/O API + simulator
kim
committed
dcef6f1
Use SimulatorIO as the "I/O driver" in the executor
kim
committed
11dc4c7
Make it clearer that we're clearing
kim
committed
f47352a
Expose ways for the runtime to inject failures.
kim
committed
243930b
Encapsulate SimulatorIO in an I/O "driver" that can inject failures.
kim
committed
40faf30
Remove TODO
kim
committed
c60c637
Fix optional dependencies
kim
committed
51b1f6e
Fix windows
kim
committed
36ca1f4
Fix fix windows
kim
committed
4536207
Add a length function for files
kim
committed
d4da868
Fix editor fuckup, satisfy error trait bound
kim
committed
be161e4
Unify completion future
kim
committed
d498da1

Commits on Sep 4, 2026

WIP: simulator redesign
kim
committed
a375c7f
Adjust queuing / overflow behavior to match io-uring more closely
kim
committed
059a6ac
Slight cleanup
kim
committed
31baac5
Model file durability
kim
committed
80f2787
Prepare `SqeId` for export
kim
committed
77b3a0b
WIP: fault injection API
kim
committed
c5c7963
Merge branch 'master' into kim/sim-io
kim
committed
e133798
Consider actual size written/read for Write/Read completions
kim
committed
f25388d

Commits on Sep 7, 2026

Turns out we can do without the unsafe, ownership-erased `ErasedPtr`
kim
committed
6c23090
Fix tests: file reads must actually use the volatile state
kim
committed
08397f6
Fix buf offset
kim
committed
ade9e51
Fix file length ops
kim
committed
6a7679c
Tests
kim
committed
9178efd
Move I/O to separate runtime-io crate
kim
committed
bebc3dc

Commits on Sep 11, 2026

Remove unused `Instant` alias
kim
committed
9074d72
Replace oneshot channel with custom, no-alloc future
kim
committed
e5a2178

Commits on Sep 14, 2026

Make cancellation impossible, matching io-uring semantics
kim
committed
a84015a
Avoid allocations for results and ops
kim
committed
a3335ea
Simplify types a bit
kim
committed
1db074b
Merge origin/master into kim/sim-io
kim
committed
34a23f3
Require io buffers to point to stable memory, i.e. Box
kim
committed
7dbb5c5

Commits on Sep 15, 2026

Avoid internal allocation for paths
kim
committed
311b7f0
Put file behind a single Arc, and perform copy-on-write when a page is
kim
committed
e4221e1
Re-use btree map allocation in page map on power-loss
kim
committed
a61e77b
Fix task selection + use vec
kim
committed
d87139f
Preserve `executing` allocation on `restart`
kim
committed
32fda57
Pending capacity, options constructor, Rc instead of Arc (not Sync
kim
committed
ee1c623
Bound executing queue
kim
committed
7b7da4e
Avoid alloc when trimming file
kim
committed
f0e302e
Track blocked linked in-flight tasks in the same queue, and make that
kim
committed
108ac4c

Commits on Sep 16, 2026

Feed `executing` incrementally
kim
committed
036f554
Make pending completions bounded
kim
committed
685a485

Commits on Sep 17, 2026

Make the completion future `Send`
kim
committed
01cbcf1
Undo all changes in runtime-core
kim
committed
9d8183e
Redo fs
kim
committed
cc4c39b
Cancel and complete CQEs on restart
kim
committed
5dc8ace

Commits on Sep 18, 2026

Revisit task selection and document fault injection.
kim
committed
fd2bc88