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/surf_resource.h"
  11 #include "simgrid/sg_config.h"
  12
  13 #include "workstation_private.h"
  14
  15 typedef struct workstation_VM2013 {
  16   s_workstation_CLM03_t ws;    /* a VM is a ''v''host */
  17
  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;
  21
  22 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_vm_workstation, surf,
  23                                 "Logging specific to the SURF VM workstation module");
  24
  25
  26
  27
  28 surf_model_t surf_vm_workstation_model = NULL;
  29
  30 static void vm_ws_create(const char *name, void *ind_phys_workstation)
  31 {
  32   workstation_VM2013_t vm_ws = xbt_new0(s_workstation_VM2013_t, 1);
  33
  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;
  38
  39   // //// CPU  RELATED STUFF ////
  40   vm_ws->ws->generic_resource.model.extension.cpu=cpu_model_cas01(0);
  41
  42  // //// NET RELATED STUFF ////
  43   // Bind virtual net_elm to the host
  44   // TODO rebind each time you migrate a VM
  45   // TODO check how network requests are scheduled between distinct processes competing for the same card.
  46   vm_ws->ws.net_elm=xbt_lib_get_or_null(host_lib,vm_ws->physical_ws->generic_resource.name,ROUTING_HOST_LEVEL);
  47   xbt_lib_set(host_lib, name, ROUTING_HOST_LEVEL, vm_ws->ws.net_elm);
  48
  49   // //// STORAGE RELATED STUFF ////
  50
  51   // ind means ''indirect'' that this is a reference on the whole dict_elm structure (i.e not on the surf_resource_private infos)
  52   vm_ws->physical_ws = surf_workstation_resource_priv(ind_phys_workstation);
  53   vm_ws->current_state=msg_vm_state_created,
  54   xbt_lib_set(host_lib, name, SURF_WKS_LEVEL, vm_ws);
  55
  56 }
  57
  58 /*
  59  * Update the physical host of the given VM
  60  */
  61 static void vm_ws_migrate(void *ind_vm_workstation, void *ind_dest_phys_workstation)
  62 {
  63    /* ind_phys_workstation equals to smx_host_t */
  64    workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_workstation);
  65    xbt_assert(vm_ws);
  66
  67    /* do something */
  68
  69    vm_ws->physical_workstation = surf_workstation_resource_priv(ind_dest_phys_workstation);
  70 }
  71
  72 /*
  73  * A physical host does not disapper in the current SimGrid code, but a VM may
  74  * disapper during a simulation.
  75  */
  76 static void vm_ws_destroy(void *ind_vm_workstation)
  77 {
  78         /* ind_phys_workstation equals to smx_host_t */
  79         workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_workstation);
  80         xbt_assert(vm_ws);
  81         xbt_assert(vm_ws->generic_resource.model == surf_vm_workstation_model);
  82
  83         const char *name = vm_ws->generic_resource.name;
  84         /* this will call surf_resource_free() */
  85         xbt_lib_unset(host_lib, name, SURF_WKS_LEVEL);
  86
  87         xbt_free(vm_ws->generic_resource.name);
  88         xbt_free(vm_ws);
  89 }
  90
  91 static int vm_ws_get_state(void *ind_vm_ws){
  92         return ((workstation_VM2013_t) surf_workstation_resource_priv(ind_vm_ws))->current_state;
  93 }
  94
  95 static void vm_ws_set_state(void *ind_vm_ws, int state){
  96          ((workstation_VM2013_t) surf_workstation_resource_priv(ind_vm_ws))->current_state=state;
  97 }
  98
  99 /*
 100  * A surf level object will be useless in the upper layer. Returing the name
 101  * will be simple and suffcient.
 102  **/
 103 static const char *vm_ws_get_phys_host(void *ind_vm_ws)
 104 {
 105         workstation_VM2013_t vm_ws = surf_workstation_resource_priv(ind_vm_ws);
 106         return vm_ws->physical_workstation->name;
 107 }
 108
 109 static void surf_vm_workstation_model_init_internal(void)
 110 {
 111   surf_vm_workstation_model = surf_model_init();
 112
 113   surf_vm_workstation_model->name = "Virtual Workstation";
 114
 115   surf_vm_workstation_model->extension.vm_workstation.create = vm_ws_create;
 116   surf_vm_workstation_model->extension.vm_workstation.set_state = vm_ws_set_state;
 117   surf_vm_workstation_model->extension.vm_workstation.get_state = vm_ws_get_state;
 118   surf_vm_workstation_model->extension.vm_workstation.migrate = vm_ws_migrate;
 119   surf_vm_workstation_model->extension.vm_workstation.get_phys_host = vm_ws_get_phys_host;
 120   surf_vm_workstation_model->extension.vm_workstation.destroy = vm_ws_destroy;
 121
 122 }
 123
 124 void surf_vm_workstation_model_init()
 125 {
 126   surf_vm_workstation_model_init_internal();
 127   xbt_dynar_push(model_list, &surf_vm_workstation_model);
 128 }