1 /* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
10 #include "surf/surf_resource.h"
11 #include "simgrid/sg_config.h"
13 #include "workstation_private.h"
15 typedef struct workstation_VM2013 {
16 s_workstation_CLM03_t ws; /* a VM is a ''v''host */
18 workstation_CLM03_t sub_ws; // Pointer to the ''host'' OS
19 e_msg_vm_state_t current_state; // See include/msg/datatypes.h
20 } s_workstation_VM2013_t, *workstation_VM2013_t;
22 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_vm_workstation, surf,
23 "Logging specific to the SURF VM workstation module");
28 surf_model_t surf_vm_workstation_model = NULL;
30 static void vm_ws_create(const char *name, void *ind_phys_workstation)
32 workstation_VM2013_t vm_ws = xbt_new0(s_workstation_VM2013_t, 1);
34 // //// WORKSTATION RELATED STUFF ////
35 __init_ws(&(vm_ws->ws), name);
36 // Override the model with the current VM one.
37 vm_ws->ws.generic_resource.model = surf_vm_workstation_model;
39 // //// CPU RELATED STUFF ////
40 // This can be done directly during the creation of the surf_vm_worsktation model if
41 // we consider that there will be only one CPU model for one layer of virtualization.
42 // However, if you want to provide several layers (i.e. a VM inside a VM hosted by a PM)
43 // we should add a kind of table that stores the different CPU model.
44 // vm_ws->ws->generic_resource.model.extension.cpu=cpu_model_cas01(VM level ? );
46 // //// NET RELATED STUFF ////
47 // Bind virtual net_elm to the host
48 // TODO rebind each time you migrate a VM
49 // TODO check how network requests are scheduled between distinct processes competing for the same card.
50 vm_ws->ws.net_elm=xbt_lib_get_or_null(host_lib,vm_ws->physical_ws->generic_resource.name,ROUTING_HOST_LEVEL);
51 xbt_lib_set(host_lib, name, ROUTING_HOST_LEVEL, vm_ws->ws.net_elm);
53 // //// STORAGE RELATED STUFF ////
55 // ind means ''indirect'' that this is a reference on the whole dict_elm structure (i.e not on the surf_resource_private infos)
56 vm_ws->physical_ws = surf_workstation_resource_priv(ind_phys_workstation);
57 vm_ws->current_state=msg_vm_state_created,
58 xbt_lib_set(host_lib, name, SURF_WKS_LEVEL, vm_ws);
63 * Update the physical host of the given VM
65 static void vm_ws_migrate(void *ind_vm_workstation, void *ind_dest_phys_workstation)
67 /* ind_phys_workstation equals to smx_host_t */
68 workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_workstation);
73 vm_ws->physical_workstation = surf_workstation_resource_priv(ind_dest_phys_workstation);
77 * A physical host does not disapper in the current SimGrid code, but a VM may
78 * disapper during a simulation.
80 static void vm_ws_destroy(void *ind_vm_workstation)
82 /* ind_phys_workstation equals to smx_host_t */
83 workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_workstation);
85 xbt_assert(vm_ws->generic_resource.model == surf_vm_workstation_model);
87 const char *name = vm_ws->generic_resource.name;
88 /* this will call surf_resource_free() */
89 xbt_lib_unset(host_lib, name, SURF_WKS_LEVEL);
91 xbt_free(vm_ws->generic_resource.name);
95 static int vm_ws_get_state(void *ind_vm_ws){
96 return ((workstation_VM2013_t) surf_workstation_resource_priv(ind_vm_ws))->current_state;
99 static void vm_ws_set_state(void *ind_vm_ws, int state){
100 ((workstation_VM2013_t) surf_workstation_resource_priv(ind_vm_ws))->current_state=state;
104 static double ws_share_resources(double now)
106 // Can be obsolete if you right can ensure that ws_model has been code previously
107 // invoke ws_share_resources on the physical_lyer: sub_ws->ws_share_resources()
109 unsigned int index_of_pm_ws_model = xbt_dynar_search(model_list_invoke, surf_workstation_model);
110 unsigned int index_of_vm_ws_model = xbt_dynar_search(model_list_invoke, surf_vm_workstation_model);
111 xbt_assert((index_of_pm_ws_model < index_of_vm_ws_model), "Cannot assume surf_workstation_model comes before");
112 /* we have to make sure that the share_resource() callback of the model of the lower layer must be called in advance. */
115 // assign the corresponding value to X1, X2, ....
117 // invoke cpu and net share resources on layer (1)
124 * A surf level object will be useless in the upper layer. Returing the name
125 * will be simple and suffcient.
127 static const char *vm_ws_get_phys_host(void *ind_vm_ws)
129 workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_ws);
130 return vm_ws->physical_workstation->name;
133 static void surf_vm_workstation_model_init_internal(void)
135 surf_vm_workstation_model = surf_model_init();
137 surf_vm_workstation_model->name = "Virtual Workstation";
139 surf_vm_workstation_model->extension.vm_workstation.create = vm_ws_create;
140 surf_vm_workstation_model->extension.vm_workstation.set_state = vm_ws_set_state;
141 surf_vm_workstation_model->extension.vm_workstation.get_state = vm_ws_get_state;
142 surf_vm_workstation_model->extension.vm_workstation.migrate = vm_ws_migrate;
143 surf_vm_workstation_model->extension.vm_workstation.get_phys_host = vm_ws_get_phys_host;
144 surf_vm_workstation_model->extension.vm_workstation.destroy = vm_ws_destroy;
146 surf_vm_workstation_model->model_private->share_resources = ws_share_resources;
149 void surf_vm_workstation_model_init()
151 surf_vm_workstation_model_init_internal();
152 xbt_dynar_push(model_list, &surf_vm_workstation_model);
153 xbt_dynar_push(model_list_invoke, &surf_vm_workstation_model);