1 files changed, 39 insertions, 0 deletions
diff --git a/libgo/runtime/go-rec-nb-big.c b/libgo/runtime/go-rec-nb-big.c
new file mode 100644
index 00000000000..53ffe48ab97
--- /dev/null
+++ b/libgo/runtime/go-rec-nb-big.c
@@ -0,0 +1,39 @@
+/* go-rec-nb-big.c -- nonblocking receive of something big on a channel.
+
+   Copyright 2009 The Go Authors. All rights reserved.
+   Use of this source code is governed by a BSD-style
+   license that can be found in the LICENSE file.  */
+
+#include <stdint.h>
+
+#include "channel.h"
+
+_Bool
+__go_receive_nonblocking_big (struct __go_channel* channel, void *val)
+{
+  size_t alloc_size;
+  size_t offset;
+
+  alloc_size = ((channel->element_size + sizeof (uint64_t) - 1)
+		/ sizeof (uint64_t));
+
+  int data = __go_receive_nonblocking_acquire (channel);
+  if (data != RECEIVE_NONBLOCKING_ACQUIRE_DATA)
+    {
+      __builtin_memset (val, 0, channel->element_size);
+      if (data == RECEIVE_NONBLOCKING_ACQUIRE_NODATA)
+	return 0;
+      else
+	{
+	  /* Channel is closed.  */
+	  return 1;
+	}
+    }
+
+  offset = channel->next_fetch * alloc_size;
+  __builtin_memcpy (val, &channel->data[offset], channel->element_size);
+
+  __go_receive_release (channel);
+
+  return 1;
+}