1 files changed, 0 insertions, 97 deletions
diff --git a/lib/core/refs.nim b/lib/core/refs.nim
deleted file mode 100644
index e1575b68c..000000000
--- a/lib/core/refs.nim
+++ /dev/null
@@ -1,97 +0,0 @@
-#
-#
-#            Nim's Runtime Library
-#        (c) Copyright 2017 Nim contributors
-#
-#    See the file "copying.txt", included in this
-#    distribution, for details about the copyright.
-#
-
-## Default ref implementation used by Nim's core.
-
-# We cannot use the allocator interface here as we require a heap walker to
-# exist. Thus we import 'alloc' directly here to get our own heap that is
-# all under the GC's control and can use the ``allObjects`` iterator which
-# is crucial for the "sweep" phase.
-import typelayouts, alloc
-
-type
-  TracingGc = ptr object of Allocator
-    visit*: proc (fieldAddr: ptr pointer; a: Allocator) {.nimcall.}
-
-  GcColor = enum
-    white = 0, black = 1, grey = 2 ## to flip the meaning of white/black
-                                   ## perform (1 - col)
-
-  GcHeader = object
-    t: ptr TypeLayout
-    color: GcColor
-  Cell = ptr GcHeader
-
-  GcFrame {.core.} = object
-    prev: ptr GcFrame
-    marker: proc (self: GcFrame; a: Allocator)
-
-  Phase = enum
-    None, Marking, Sweeping
-
-  GcHeap = object
-    r: MemRegion
-    phase: Phase
-    currBlack, currWhite: GcColor
-    greyStack: seq[Cell]
-
-var
-  gch {.threadvar.}: GcHeap
-
-proc `=trace`[T](a: ref T) =
-  if not marked(a):
-    mark(a)
-    `=trace`(a[])
-
-template usrToCell(p: pointer): Cell =
-
-template cellToUsr(cell: Cell): pointer =
-  cast[pointer](cast[ByteAddress](cell)+%ByteAddress(sizeof(GcHeader)))
-
-template usrToCell(usr: pointer): Cell =
-  cast[Cell](cast[ByteAddress](usr)-%ByteAddress(sizeof(GcHeader)))
-
-template markGrey(x: Cell) =
-  if x.color == gch.currWhite and phase == Marking:
-    x.color = grey
-    add(gch.greyStack, x)
-
-proc `=`[T](dest: var ref T; src: ref T) =
-  ## full write barrier implementation.
-  if src != nil:
-    let s = usrToCell(src)
-    markGrey(s)
-  system.`=`(dest, src)
-
-proc linkGcFrame(f: ptr GcFrame) {.core.}
-proc unlinkGcFrame() {.core.}
-
-proc setGcFrame(f: ptr GcFrame) {.core.}
-
-proc registerGlobal(p: pointer; t: ptr TypeLayout) {.core.}
-proc unregisterGlobal(p: pointer; t: ptr TypeLayout) {.core.}
-
-proc registerThreadvar(p: pointer; t: ptr TypeLayout) {.core.}
-proc unregisterThreadvar(p: pointer; t: ptr TypeLayout) {.core.}
-
-proc newImpl(t: ptr TypeLayout): pointer =
-  let r = cast[Cell](rawAlloc(t.size + sizeof(GcHeader)))
-  r.typ = t
-  result = r +! sizeof(GcHeader)
-
-template new*[T](x: var ref T) =
-  x = newImpl(getTypeLayout(x))
-
-
-when false:
-  # implement these if your GC requires them:
-  proc writeBarrierLocal() {.core.}
-  proc writeBarrierGlobal() {.core.}
-
-  proc writeBarrierGeneric() {.core.}