From c8268330be4de61541aa34eb82f7a93dc62e627c Mon Sep 17 00:00:00 2001
From: yatsen1 <kitech@sixlan.tk>
Date: Tue, 18 Jun 2019 02:47:18 +0800
Subject: [feature] Add boehm gc finalizer (#11446)

---
 lib/system/mmdisp.nim | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'lib/system')

diff --git a/lib/system/mmdisp.nim b/lib/system/mmdisp.nim
index 905fdcc94..a56be3d23 100644
--- a/lib/system/mmdisp.nim
+++ b/lib/system/mmdisp.nim
@@ -99,6 +99,8 @@ when defined(boehmgc):
     ## Return the total number of bytes allocated in this process.
     ## Never decreases.
 
+  proc boehmRegisterFinalizer(obj, ff, cd, off, ocd: pointer) {.importc: "GC_register_finalizer", boehmGC.}
+
   proc allocAtomic(size: int): pointer =
     result = boehmAllocAtomic(size)
     zeroMem(result, size)
@@ -155,9 +157,14 @@ when defined(boehmgc):
     when hasThreadSupport:
       boehmGC_allow_register_threads()
 
+  proc boehmgc_finalizer(obj: pointer, typedFinalizer: (proc(x: pointer) {.cdecl.})) =
+    typedFinalizer(obj)
+
   proc newObj(typ: PNimType, size: int): pointer {.compilerproc.} =
     if ntfNoRefs in typ.flags: result = allocAtomic(size)
     else: result = alloc(size)
+    if typ.finalizer != nil:
+      boehmRegisterFinalizer(result, boehmgc_finalizer, typ.finalizer, nil, nil)
   proc newSeq(typ: PNimType, len: int): pointer {.compilerproc.} =
     result = newObj(typ, addInt(mulInt(len, typ.base.size), GenericSeqSize))
     cast[PGenericSeq](result).len = len
-- 
cgit 1.4.1-2-gfad0