mach_descrip.h revision d2365b013d4199b49b3a1438d57aea23423e02ad
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _MACH_DESCRIP_H
#define _MACH_DESCRIP_H
#ifdef __cplusplus
extern "C" {
#endif
/*
* MD memory operations (memops) are of two types:
* buf:
* Buffer allocator routines used to allocate the MD buffer.
* Allocator must support an alignment argument.
*
* meta:
* Meta allocator routines to allocate meta data strcutures.
* These allocations are small and don't have alignment
* requirements. Examples, md_t handles and the machine_descrip_t
* structure.
*/
typedef struct machine_descrip_memops {
/*
* the current machine description to be retrieved or updated.
*
* Locks:
* The current global MD is protected by the curr_mach_descrip_lock.
* Each Machine description has a lock to synchronize its ref count.
* The Obsolete MD list is protected by the obs_list_lock.
*/
typedef struct machine_descrip_s {
void *va; /* virtual address */
int refcnt; /* MD ref count */
/*
*/
extern md_t *md_get_handle(void);
extern int md_fini_handle(md_t *);
mde_cookie_t **);
extern uint64_t md_get_current_gen(void);
#ifdef __cplusplus
}
#endif
#endif /* _MACH_DESCRIP_H */