1 files changed, 32 insertions, 0 deletions
diff --git a/v_windows/v/old/vlib/builtin/chan.v b/v_windows/v/old/vlib/builtin/chan.v
new file mode 100644
index 0000000..1692d5f
--- /dev/null
+++ b/v_windows/v/old/vlib/builtin/chan.v
@@ -0,0 +1,32 @@
+module builtin
+
+// ChanState describes the result of an attempted channel transaction.
+pub enum ChanState {
+	success
+	not_ready // push()/pop() would have to wait, but no_block was requested
+	closed
+}
+
+/*
+The following methods are only stubs.
+The real implementation is in `vlib/sync/channels.v`
+*/
+
+// close closes the channel for further push transactions.
+// closed channels cannot be pushed to, however they can be popped
+// from as long as there is still objects available in the channel buffer.
+pub fn (ch chan) close() {}
+
+// try_pop returns `ChanState.success` if an object is popped from the channel.
+// try_pop effectively pops from the channel without waiting for objects to become available.
+// Both the test and pop transaction is done atomically.
+pub fn (ch chan) try_pop(obj voidptr) ChanState {
+	return .success
+}
+
+// try_push returns `ChanState.success` if the object is pushed to the channel.
+// try_push effectively both push and test if the transaction `ch <- a` succeeded.
+// Both the test and push transaction is done atomically.
+pub fn (ch chan) try_push(obj voidptr) ChanState {
+	return .success
+}