2 * This file is part of the Palacios Virtual Machine Monitor developed
3 * by the V3VEE Project with funding from the United States National
4 * Science Foundation and the Department of Energy.
6 * The V3VEE Project is a joint project between Northwestern University
7 * and the University of New Mexico. You can find out more at
10 * Copyright (c) 2011, Jack Lange <jacklange@cs.pitt.edu>
11 * Copyright (c) 2011, The V3VEE Project <http://www.v3vee.org>
12 * All rights reserved.
14 * Author: Jack Lange <jacklange@cs.pitt.edu>
16 * This is free software. You are permitted to use,
17 * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
20 #ifndef __VMM_BARRIER_H__
21 #define __VMM_BARRIER_H__
25 #include <palacios/vmm_lock.h>
26 #include <palacios/vmm_bitmap.h>
31 int active; // If 1, barrier is active, everyone must wait
32 // If 0, barrier is clear, can proceed
34 struct v3_bitmap cpu_map;
42 int v3_init_barrier(struct v3_vm_info * vm_info);
43 int v3_deinit_barrier(struct v3_vm_info * vm_info);
46 int v3_raise_barrier(struct v3_vm_info * vm_info, struct guest_info * local_core);
47 int v3_lower_barrier(struct v3_vm_info * vm_info);
49 int v3_wait_at_barrier(struct guest_info * core);
52 /* Special Barrier activation functions.
53 * DO NOT USE THESE UNLESS YOU KNOW WHAT YOU ARE DOING
55 int v3_raise_barrier_nowait(struct v3_vm_info * vm_info, struct guest_info * local_core);
56 int v3_wait_for_barrier(struct v3_vm_info * vm_info, struct guest_info * local_core);