summary refs log tree commit diff stats
path: root/lib/system/atomics.nim
diff options
context:
space:
mode:
Diffstat (limited to 'lib/system/atomics.nim')
-rw-r--r--lib/system/atomics.nim5
1 files changed, 3 insertions, 2 deletions
diff --git a/lib/system/atomics.nim b/lib/system/atomics.nim
index 3ef9d00ec..5e5c72fae 100644
--- a/lib/system/atomics.nim
+++ b/lib/system/atomics.nim
@@ -1,13 +1,13 @@
 #
 #
-#            Nimrod's Runtime Library
+#            Nim's Runtime Library
 #        (c) Copyright 2014 Andreas Rumpf
 #
 #    See the file "copying.txt", included in this
 #    distribution, for details about the copyright.
 #
 
-# Atomic operations for Nimrod.
+# Atomic operations for Nim.
 {.push stackTrace:off.}
 
 const someGcc = defined(gcc) or defined(llvm_gcc) or defined(clang)
@@ -165,6 +165,7 @@ when someGcc and hasThreadSupport:
 elif defined(vcc) and hasThreadSupport:
   proc addAndFetch*(p: ptr int, val: int): int {.
     importc: "NimXadd", nodecl.}
+  proc fence*() {.importc: "_ReadWriteBarrier", header: "<intrin.h>".}
 
 else:
   proc addAndFetch*(p: ptr int, val: int): int {.inline.} =