Test the realtime GC, via long running process in a shared object, without linking nimrtl.dll/so.

tests/realtimeGC/main.nim

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+discard """
+  cmd: " nim c main.nim"
+  final output: "Done!"
+"""
+
+import times
+import os
+
+const RUNTIME = 35 * 60 # 35 minutes
+
+when defined(windows):
+  const dllname = "./server.dll"
+elif defined(macosx):
+  const dllname = "./libserver.dylib"
+else:
+  const dllname = "./libserver.so"
+
+proc status() {.importc: "status", dynlib: dllname.}
+proc count() {.importc: "count", dynlib: dllname.}
+proc occupiedMem() {.importc: "occupiedMem", dynlib: dllname.}
+
+proc main() =
+  let startTime = getTime()
+  let runTime = cast[Time](RUNTIME) #
+  var accumTime: Time
+  while accumTime < runTime:
+    for i in 0..10:
+      count()
+    echo("1. sleeping... ")
+    sleep(500)
+    for i in 0..10:
+      status()
+    echo("2. sleeping... ")
+    sleep(500)
+    occupiedMem()
+    accumTime = cast[Time]((getTime() - startTime))
+    echo("--- Minutes left to run: ", int(int(runTime-accumTime)/60))
+  echo("Done")
+
+main()