--- libaitio/inc/defs.h	2011/12/13 02:23:07	1.3
+++ libaitio/inc/defs.h	2012/07/22 20:39:45	1.7
@@ -3,7 +3,7 @@
 *  by Michael Pounov <misho@elwix.org>
 *
 * $Author: misho $
-* $Id: defs.h,v 1.3 2011/12/13 02:23:07 misho Exp $
+* $Id: defs.h,v 1.7 2012/07/22 20:39:45 misho Exp $
 *
 **************************************************************************
 The ELWIX and AITNET software is distributed under the following
@@ -47,14 +47,53 @@ SUCH DAMAGE.
 #define __DEFS_H
 
 
-#define STRSIZ		256
-#define RECV_TIMEOUT	5000
+#define RECV_TIMEOUT		5000
 
+#define BUFIO_MODE_LIMIT	0
+#define BUFIO_MODE_INFINIT	1
+
+/* memory pool helper macros */
+
+#define MEM_MAGIC_START	0xAAAAAAAA
+#define MEM_MAGIC_STOP	0x55555555
+#define MEM_ALLOC_MAX	0xFFFFFFF3
+
+#define MEM_MIN_BUCKET	4
+#define MEM_MAX_BUCKET	32
+
+#define MEM_PTR2LINT(x)	((u_int) ((uintptr_t)(x)) & 0xFFFFFFFF)
+#define MEM_PTR2HINT(x)	((u_int) (sizeof(uintptr_t) == sizeof(u_int)) ? 0 : \
+				(((uintptr_t)(x)) >> 32) & 0xFFFFFFFF)
+#define MEM_INT2PTR(x)	((void*) ((uintptr_t)(x)))
+
+#define MEM_BADADDR(x)	(MEM_PTR2LINT(x) < 0x00001000U || MEM_PTR2LINT(x) > 0xFFFFF000U)
+#define MEM_CORRUPT(x)	(!(x) || ((u_int*)(x))[-1] != MEM_MAGIC_START || \
+				((u_int*)(x))[((u_int*)(x))[-2]] != MEM_MAGIC_STOP)
+
+#define mem_data(x, _type)	(assert((x)), (_type) ((x)->alloc_mem ? ((x)->alloc_mem + 2) : NULL))
+#define mem_len(x)		(assert((x)), (x)->alloc_mem ? *(x)->alloc_mem : 0)
+#define mem_size(x)		(mem_len((x)) * sizeof(u_int))
+
+
 #define LOGERR	{ \
 			io_Errno = errno; \
 			strlcpy(io_Error, strerror(errno), STRSIZ); \
 		}
 
+struct tagBufIO {
+	int		buf_mode;
+	struct {
+		void	*buf_base;
+		off_t	buf_size;
+	};
+	off_t		buf_offset;
+
+	void 		(*buf_unmap)();
+};
+
+
+extern mpool_t *io_mpool;
+extern int use_mm;
 
 extern int io_Errno;
 extern char io_Error[];