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) 2012, Jack Lange <jacklange@cs.pitt.edu>
11 * Copyright (c) 2012, 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".
21 #include <palacios/vmm.h>
22 #include <palacios/vm_guest.h>
23 #include <palacios/vmm_timeout.h>
27 int v3_add_core_timeout(struct guest_info * core, uint64_t cycles,
28 int (*callback)(struct guest_info * core,
30 void * private_data) {
31 struct v3_core_timeouts * timeouts = &(core->timeouts);
33 if (timeouts->timeout_active) {
34 PrintError("Tried to activate a timeout whiel one is already active\n");
38 timeouts->callback = callback;
39 timeouts->private_data = private_data;
40 timeouts->timeout_active = 1;
41 timeouts->next_timeout = cycles;
48 int v3_handle_timeouts(struct guest_info * core, uint64_t guest_cycles) {
49 struct v3_core_timeouts * timeouts = &(core->timeouts);
52 V3_Print("Handling timeout from %llu guest cycles (Next timeout=%llu)\n", guest_cycles,
53 timeouts->next_timeout);
56 if (guest_cycles >= timeouts->next_timeout) {
57 timeouts->next_timeout = 0;
58 timeouts->timeout_active = 0;
60 if (timeouts->callback) {
62 V3_Print("Calling timeout callback\n");
63 timeouts->callback(core, timeouts->private_data);
66 timeouts->next_timeout -= guest_cycles;