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https://github.com/logos-storage/logos-storage-nim.git
synced 2026-02-21 22:13:07 +00:00
47 lines
1017 B
Nim
47 lines
1017 B
Nim
import std/tables
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import pkg/chronos
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import ../logutils
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{.push raises: [].}
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type
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TrackedFuture = Future[void].Raising([])
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TrackedFutures* = ref object
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futures: Table[uint, TrackedFuture]
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cancelling: bool
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logScope:
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topics = "trackable futures"
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proc len*(self: TrackedFutures): int =
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self.futures.len
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proc removeFuture(self: TrackedFutures, future: TrackedFuture) =
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if not self.cancelling and not future.isNil:
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self.futures.del(future.id)
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proc track*(self: TrackedFutures, fut: TrackedFuture) =
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if self.cancelling:
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return
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if fut.finished:
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return
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self.futures[fut.id] = fut
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proc cb(udata: pointer) =
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self.removeFuture(fut)
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fut.addCallback(cb)
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proc cancelTracked*(self: TrackedFutures) {.async: (raises: []).} =
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self.cancelling = true
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trace "cancelling tracked futures", len = self.futures.len
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let cancellations = self.futures.values.toSeq.mapIt(it.cancelAndWait())
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await noCancel allFutures cancellations
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self.futures.clear()
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self.cancelling = false
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