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discard """
outputsub: "101"
errormsg: "'threadFunc' is not GC-safe"
line: 39
cmd: "nim $target --hints:on --threads:on $options $file"
"""
import os
var
thr: array [0..5, TThread[tuple[a, b: int]]]
proc doNothing() = discard
type
PNode = ref TNode
TNode = object {.pure.}
le, ri: PNode
data: string
var
root: PNode
proc buildTree(depth: int): PNode =
if depth == 3: return nil
new(result)
result.le = buildTree(depth-1)
result.ri = buildTree(depth-1)
result.data = $depth
proc echoLeTree(n: PNode) =
var it: PNode
it = nil
it = n
while it != nil:
echo it.data
it = it.le
proc threadFunc(interval: tuple[a, b: int]) {.thread.} =
doNothing()
for i in interval.a..interval.b:
var r = buildTree(i)
echoLeTree(r) # for local data
echoLeTree(root) # and the same for foreign data :-)
proc main =
root = buildTree(5)
for i in 0..high(thr):
createThread(thr[i], threadFunc, (i*3, i*3+2))
joinThreads(thr)
main()
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