execute GC_runOrc before exiting threads

[ringabout]

IMHO, ORC uses shared heap and should clean the cycle before threads exit.

A leak, for example

import os

type
  WorkRequest = ref object
    id: WorkRequest
    data: string
    time: array[100000, int]

var
  thread: Thread[void]


proc workThread() {.thread.} =
  var x = WorkRequest()
  x.id = x

while true:
  createThread(thread, workThread)
  sleep(1000)

[ringabout]

Consider a circle in a thread;

import os

type
  WorkRequest = ref object
    id: WorkRequest

var
  thread: Thread[void]

proc workThread() {.thread.} =
  var x = WorkRequest()
  x.id = x

createThread(thread, workThread)
sleep(1000)

I need a solution to collect this circle. I can think of two solutions

proc workThread() {.thread.} =
  block:
    var x = WorkRequest()
    x.id = x
  GC_runOrc()

proc workThread() {.thread.} =
  defer: GC_runOrc()
  var x = WorkRequest()
  x.id = x

Are there some solutions preferred?

[Araq]

GC_runOrc is a blunt tool and we have to watch out not to call it too often, the performance depends on the client application.

[ringabout]

make sense