Reuse the same vec during copies

sfackler · sfackler · commit 4a9ca42b20a7 · 2014-10-28T09:16:11.000-07:00
diff --git a/src/lib.rs b/src/lib.rs
@@ -1666,11 +1666,13 @@ impl<'a> PostgresCopyInStatement<'a> {
                 }
             }
 
+            let mut data = buf.unwrap();
             try_pg_desync!(conn, conn.stream.write_message(
                 &CopyData {
-                    data: buf.unwrap()[]
+                    data: data[]
                 }));
-            buf = MemWriter::new();
+            data.clear();
+            buf = MemWriter::from_vec(data);
         }
 
         let _ = buf.write_be_i16(-1);

Original file line number	Diff line number	Diff line change
`@@ -1666,11 +1666,13 @@ impl<'a> PostgresCopyInStatement<'a> {`
`1666`	`1666`	`}`
`1667`	`1667`	`}`
`1668`	`1668`
	`1669`	`+ let mut data = buf.unwrap();`
`1669`	`1670`	`try_pg_desync!(conn, conn.stream.write_message(`
`1670`	`1671`	`&CopyData {`
`1671`		`- data: buf.unwrap()[]`
	`1672`	`+ data: data[]`
`1672`	`1673`	`}));`
`1673`		`- buf = MemWriter::new();`
	`1674`	`+ data.clear();`
	`1675`	`+ buf = MemWriter::from_vec(data);`
`1674`	`1676`	`}`
`1675`	`1677`
`1676`	`1678`	`let _ = buf.write_be_i16(-1);`