--- libaitio/inc/aitio.h	2011/08/29 23:27:22	1.11.2.4
+++ libaitio/inc/aitio.h	2011/08/30 08:54:25	1.11.2.5
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: aitio.h,v 1.11.2.4 2011/08/29 23:27:22 misho Exp $
+* $Id: aitio.h,v 1.11.2.5 2011/08/30 08:54:25 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -110,7 +110,9 @@ typedef enum {
 	buffer, string, blob, array, 	/* buffer -> uint8_t*; string -> int8_t*; 
 					   	blob -> void*(+socket); array -> array_t* */
 	u8, u16, u32, u64,		/* unsigned integers ... */
-	i8, i16, i32, i64		/* integers ... */
+	i8, i16, i32, i64,		/* integers ... */
+	zeroCopy = 0x80			/* OR attribute used from RPC dispatcher to mark data in val union 
+					   	is zero copied from network buffer */
 } ait_type_t;
 
 typedef struct {
@@ -132,24 +134,28 @@ typedef struct {
 	} val;
 } __packed ait_val_t;
 
-#define AIT_TYPE(_vl)			((ait_type_t) (_vl)->val_type)
+#define AIT_TYPE(_vl)			((ait_type_t) (_vl)->val_type & ~zeroCopy)
 #define AIT_LEN(_vl)			(_vl)->val_len
-#define AIT_BLOB_CHUNKS(_vl, _n)	(assert((_vl)), (_vl)->val_len / _n + ((_vl)->val_len % _n) ? 1 : 0)
-#define AIT_ISEMPTY(_vl)		(assert((_vl)), (_vl)->val_type == empty)
+#define AIT_BLOB_CHUNKS(_vl, _n)	(assert((_vl)), AIT_LEN((_vl)) / _n + (AIT_LEN((_vl)) % _n) ? 1 : 0)
+#define AIT_ISEMPTY(_vl)		(assert((_vl)), AIT_TYPE((_vl)) == empty)
 
-#define AIT_GET_ARRAY(_vl)		(assert((_vl)), assert((_vl)->val_type == array), \
+#define AIT_ISZCOPY(_vl)		(assert((_vl)), (_vl)->val_type & zeroCopy)
+#define AIT_ADDZCOPY(_vl)		(assert((_vl)), (_vl)->val_type | zeroCopy)
+#define AIT_DELZCOPY(_vl)		(assert((_vl)), (_vl)->val_type &= ~zeroCopy)
+
+#define AIT_GET_ARRAY(_vl)		(assert((_vl)), assert(AIT_TYPE((_vl)) == array), \
 						((array_t*) (_vl)->val.array))
-#define AIT_GET_BUF(_vl)		(assert((_vl)), assert((_vl)->val_type == buffer), (_vl)->val.buffer)
-#define AIT_GET_STR(_vl)		(assert((_vl)), assert((_vl)->val_type == string), (_vl)->val.string)
-#define AIT_GET_BLOB(_vl)		(assert((_vl)), assert((_vl)->val_type == blob), (_vl)->val.blob)
-#define AIT_GET_U8(_vl)			(assert((_vl)), assert((_vl)->val_type == u8), (_vl)->val.u8)
-#define AIT_GET_U16(_vl)		(assert((_vl)), assert((_vl)->val_type == u16), (_vl)->val.u16)
-#define AIT_GET_U32(_vl)		(assert((_vl)), assert((_vl)->val_type == u32), (_vl)->val.u32)
-#define AIT_GET_U64(_vl)		(assert((_vl)), assert((_vl)->val_type == u64), (_vl)->val.u64)
-#define AIT_GET_I8(_vl)			(assert((_vl)), assert((_vl)->val_type == i8), (_vl)->val.i8)
-#define AIT_GET_I16(_vl)		(assert((_vl)), assert((_vl)->val_type == i16), (_vl)->val.i16)
-#define AIT_GET_I32(_vl)		(assert((_vl)), assert((_vl)->val_type == i32), (_vl)->val.i32)
-#define AIT_GET_I64(_vl)		(assert((_vl)), assert((_vl)->val_type == i64), (_vl)->val.i64)
+#define AIT_GET_BUF(_vl)		(assert((_vl)), assert(AIT_TYPE((_vl)) == buffer), (_vl)->val.buffer)
+#define AIT_GET_STR(_vl)		(assert((_vl)), assert(AIT_TYPE((_vl)) == string), (_vl)->val.string)
+#define AIT_GET_BLOB(_vl)		(assert((_vl)), assert(AIT_TYPE((_vl)) == blob), (_vl)->val.blob)
+#define AIT_GET_U8(_vl)			(assert((_vl)), assert(AIT_TYPE((_vl)) == u8), (_vl)->val.u8)
+#define AIT_GET_U16(_vl)		(assert((_vl)), assert(AIT_TYPE((_vl)) == u16), (_vl)->val.u16)
+#define AIT_GET_U32(_vl)		(assert((_vl)), assert(AIT_TYPE((_vl)) == u32), (_vl)->val.u32)
+#define AIT_GET_U64(_vl)		(assert((_vl)), assert(AIT_TYPE((_vl)) == u64), (_vl)->val.u64)
+#define AIT_GET_I8(_vl)			(assert((_vl)), assert(AIT_TYPE((_vl)) == i8), (_vl)->val.i8)
+#define AIT_GET_I16(_vl)		(assert((_vl)), assert(AIT_TYPE((_vl)) == i16), (_vl)->val.i16)
+#define AIT_GET_I32(_vl)		(assert((_vl)), assert(AIT_TYPE((_vl)) == i32), (_vl)->val.i32)
+#define AIT_GET_I64(_vl)		(assert((_vl)), assert(AIT_TYPE((_vl)) == i64), (_vl)->val.i64)
 
 #define AIT_SET_BUF(_vl, _v, _len)	do { ait_val_t *__val = (_vl); assert(__val); assert((_v)); \
 						__val->val.buffer = malloc(_len); \
@@ -199,6 +205,7 @@ typedef struct {
 						__val->val_type = i64; __val->val.i64 = _n; \
 						AIT_LEN(__val) = sizeof(int64_t); } while (0)
 
+					/* if attribute zeroCopy is set not execute free() */
 #define AIT_FREE_VAL(_vl)		do { ait_val_t *__val = (_vl); assert(__val); \
 						switch (__val->val_type) { \
 							case buffer: \