Packet.lua: add clone_to_memory

snabbco · Aug 23, 2016 · bb9b3c2 · bb9b3c2
1 parent 048f2a8
commit bb9b3c2
Showing 1 changed file with 8 additions and 3 deletions.
diff --git a/src/core/packet.lua b/src/core/packet.lua
@@ -71,12 +71,17 @@ function new_packet ()
    return p
 end
 
+-- Create an exact copy of srcp at memory pointed to by dstp.
+function clone_to_memory(dstp, srcp)
+   ffi.copy(dstp, srcp, srcp.length)
+   dstp.length = srcp.length
+   return dstp
+end
+
 -- Create an exact copy of a packet.
 function clone (p)
    local p2 = allocate()
-   ffi.copy(p2, p, p.length)
-   p2.length = p.length
-   return p2
+   return clone_to_memory(p2, p)
 end
 
 -- Append data to the end of a packet.