revert back erasure code

codex/erasure/asyncbackend.nim

@@ -18,11 +18,14 @@ import pkg/questionable/results
 import ./backend
 import ../errors
 import ../logutils
-import ../utils/asyncthreads
 
 logScope:
   topics = "codex asyncerasure"
 
+const
+  CompletitionTimeout = 1.seconds # Maximum await time for completition after receiving a signal
+  CompletitionRetryDelay = 10.millis
+
 type
   EncoderBackendPtr = ptr EncoderBackend
   DecoderBackendPtr = ptr DecoderBackend
@@ -121,6 +124,20 @@ proc proxySpawnDecodeTask(
 ): Flowvar[DecodeTaskResult] =
   tp.spawn decodeTask(args, data[], parity[])
 
+proc awaitResult[T](signal: ThreadSignalPtr, handle: Flowvar[T]): Future[?!T] {.async.} =
+  await wait(signal)
+
+  var
+    res: T
+    awaitTotal: Duration
+  while awaitTotal < CompletitionTimeout:
+      if handle.tryComplete(res):
+        return success(res)
+      else:
+        awaitTotal += CompletitionRetryDelay
+        await sleepAsync(CompletitionRetryDelay)
+
+  return failure("Task signaled finish but didn't return any result within " & $CompletitionRetryDelay)
 
 proc asyncEncode*(
   tp: Taskpool,
@@ -138,7 +155,7 @@ proc asyncEncode*(
       args = EncodeTaskArgs(signal: signal, backend: unsafeAddr backend, blockSize: blockSize, ecM: ecM)
       handle = proxySpawnEncodeTask(tp, args, data)
 
-    without res =? await awaitThreadResult(signal, handle), err:
+    without res =? await awaitResult(signal, handle), err:
       return failure(err)
 
     if res.isOk:
@@ -173,7 +190,7 @@ proc asyncDecode*(
       args = DecodeTaskArgs(signal: signal, backend: unsafeAddr backend, blockSize: blockSize, ecK: ecK)
       handle = proxySpawnDecodeTask(tp, args, data, parity)
 
-    without res =? await awaitThreadResult(signal, handle), err:
+    without res =? await awaitResult(signal, handle), err:
       return failure(err)
 
     if res.isOk:

codex/utils/asyncthreads.nim

@@ -10,25 +10,6 @@ const
   CompletionTimeout* = 1.seconds
     # Maximum await time for completition after receiving a signal
 
-proc awaitThreadResult*[T](
-    signal: ThreadSignalPtr, handle: Flowvar[T]
-): Future[?!T] {.async.} =
-  await wait(signal)
-
-  var
-    res: T
-    awaitTotal: Duration
-
-  while awaitTotal < CompletionTimeout:
-    if handle.tryComplete(res): ## TODO: pretty sure this leaks currently
-      return success(res)
-    else:
-      awaitTotal += CompletionRetryDelay
-      await sleepAsync(CompletionRetryDelay)
-
-  return failure(
-    "Task signaled finish but didn't return any result within " & $CompletionRetryDelay
-  )
 
 type
   SignalQueue[T] = object