src/surf/vm_workstation.c

   1 /* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010. The SimGrid Team.
   2  * All rights reserved.                                                     */
   3
   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. */
   6
   7 #include "xbt/ex.h"
   8 #include "xbt/dict.h"
   9 #include "portable.h"
  10 #include "surf_private.h"
  11 #include "surf/surf_resource.h"
  12 #include "simgrid/sg_config.h"
  13
  14 typedef struct workstation_VM2013 {
  15   s_surf_resource_t generic_resource;   /* Must remain first to add this to a trace */
  16   surf_resource_t physical_workstation;  // Pointer to the host OS
  17   e_msg_vm_state_t current_state;            // See include/msg/datatypes.h
  18 } s_workstation_VM2013_t, *workstation_VM2013_t;
  19
  20 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_vm_workstation, surf,
  21                                 "Logging specific to the SURF VM workstation module");
  22
  23 surf_model_t surf_vm_workstation_model = NULL;
  24
  25 static void vm_ws_create(const char *name, void *ind_phys_workstation)
  26 {
  27   workstation_VM2013_t vm_ws = xbt_new0(s_workstation_VM2013_t, 1);
  28 // TODO Complete the surf vm workstation model
  29   vm_ws->generic_resource.model = surf_vm_workstation_model;
  30   vm_ws->generic_resource.name = xbt_strdup(name);
  31  // ind means ''indirect'' that this is a reference on the whole dict_elm structure (i.e not on the surf_resource_private infos)
  32   vm_ws->physical_workstation = surf_workstation_resource_priv(ind_phys_workstation);
  33   vm_ws->current_state=msg_vm_state_created,
  34   xbt_lib_set(host_lib, name, SURF_WKS_LEVEL, vm_ws);
  35 }
  36
  37 /*
  38  * Update the physical host of the given VM
  39  */
  40 static void vm_ws_migrate(void *ind_vm_workstation, void *ind_dest_phys_workstation)
  41 {
  42    /* ind_phys_workstation equals to smx_host_t */
  43    workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_workstation);
  44    xbt_assert(vm_ws);
  45
  46    /* do something */
  47
  48    vm_ws->physical_workstation = surf_workstation_resource_priv(ind_dest_phys_workstation);
  49 }
  50
  51 /*
  52  * A physical host does not disapper in the current SimGrid code, but a VM may
  53  * disapper during a simulation.
  54  */
  55 static void vm_ws_destroy(void *ind_vm_workstation)
  56 {
  57         /* ind_phys_workstation equals to smx_host_t */
  58         workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_workstation);
  59         xbt_assert(vm_ws);
  60         xbt_assert(vm_ws->generic_resource.model == surf_vm_workstation_model);
  61
  62         const char *name = vm_ws->generic_resource.name;
  63         /* this will call surf_resource_free() */
  64         xbt_lib_unset(host_lib, name, SURF_WKS_LEVEL);
  65
  66         xbt_free(vm_ws->generic_resource.name);
  67         xbt_free(vm_ws);
  68 }
  69
  70 static int vm_ws_get_state(void *ind_vm_ws){
  71         return ((workstation_VM2013_t) surf_workstation_resource_priv(ind_vm_ws))->current_state;
  72 }
  73
  74 static void vm_ws_set_state(void *ind_vm_ws, int state){
  75          ((workstation_VM2013_t) surf_workstation_resource_priv(ind_vm_ws))->current_state=state;
  76 }
  77 static void surf_vm_workstation_model_init_internal(void)
  78 {
  79   surf_vm_workstation_model = surf_model_init();
  80
  81   surf_vm_workstation_model->name = "Virtual Workstation";
  82
  83   surf_vm_workstation_model->extension.vm_workstation.create = vm_ws_create;
  84   surf_vm_workstation_model->extension.vm_workstation.set_state = vm_ws_set_state;
  85   surf_vm_workstation_model->extension.vm_workstation.get_state = vm_ws_get_state;
  86   surf_vm_workstation_model->extension.vm_workstation.migrate = vm_ws_migrate;
  87   surf_vm_workstation_model->extension.vm_workstation.destroy = vm_ws_destroy;
  88
  89 }
  90
  91 void surf_vm_workstation_model_init()
  92 {
  93   surf_vm_workstation_model_init_internal();
  94   xbt_dynar_push(model_list, &surf_vm_workstation_model);
  95 }