typedefs: Separate incomplete types and function types

#ifndef QEMU_TYPEDEFS_H

#define QEMU_TYPEDEFS_H

/* A load of opaque types so that device init declarations don't have to

   pull in all the real definitions.  */

/*

 * This header is for selectively avoiding #include just to get a

 * typedef name.

 *

 * Declaring a typedef name in its "obvious" place can result in

 * inclusion cycles, in particular for complete struct and union

 * types that need more types for their members.  It can also result

 * in headers pulling in many more headers, slowing down builds.

 *

 * You can break such cycles and unwanted dependencies by declaring

 * the typedef name here.

 *

 * For struct types used in only a few headers, judicious use of the

 * struct tag instead of the typedef name is commonly preferable.

 */

/* Please keep this list in case-insensitive alphabetical order */

/*

 * Incomplete struct types

 * Please keep this list in case-insensitive alphabetical order.

 */

typedef struct AdapterInfo AdapterInfo;

typedef struct AddressSpace AddressSpace;

typedef struct AioContext AioContext;

typedef struct SSIBus SSIBus;

typedef struct VirtIODevice VirtIODevice;

typedef struct Visitor Visitor;

/*

 * Function types

 */

typedef void SaveStateHandler(QEMUFile *f, void *opaque);

typedef int LoadStateHandler(QEMUFile *f, void *opaque, int version_id);