src/surf/virtual_machine.cpp

   1 /* Copyright (c) 2013-2015. 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 "cpu_cas01.hpp"
   8 #include "virtual_machine.hpp"
   9
  10 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_vm, surf,
  11                                 "Logging specific to the SURF VM module");
  12
  13 simgrid::surf::VMModel *surf_vm_model = NULL;
  14
  15 namespace simgrid {
  16 namespace surf {
  17
  18 /*************
  19  * Callbacks *
  20  *************/
  21
  22 simgrid::surf::signal<void(simgrid::surf::VirtualMachine*)> VMCreatedCallbacks;
  23 simgrid::surf::signal<void(simgrid::surf::VirtualMachine*)> VMDestructedCallbacks;
  24 simgrid::surf::signal<void(simgrid::surf::VirtualMachine*)> VMStateChangedCallbacks;
  25
  26 /*********
  27  * Model *
  28  *********/
  29
  30 VMModel::vm_list_t VMModel::ws_vms;
  31
  32 /************
  33  * Resource *
  34  ************/
  35
  36 VirtualMachine::VirtualMachine(Model *model, const char *name, xbt_dict_t props, simgrid::Host *hostPM)
  37 : Host(model, name, props, NULL, NULL, NULL)
  38 , p_hostPM(hostPM)
  39 {
  40   VMModel::ws_vms.push_back(*this);
  41   simgrid::Host::by_name_or_create(name)->extension_set<simgrid::surf::Host>(this);
  42 }
  43
  44 /*
  45  * A physical host does not disappear in the current SimGrid code, but a VM may
  46  * disappear during a simulation.
  47  */
  48 VirtualMachine::~VirtualMachine()
  49 {
  50   VMDestructedCallbacks(this);
  51   VMModel::ws_vms.erase(VMModel::vm_list_t::s_iterator_to(*this));
  52   /* Free the cpu_action of the VM. */
  53   XBT_ATTRIB_UNUSED int ret = p_action->unref();
  54   xbt_assert(ret == 1, "Bug: some resource still remains");
  55 }
  56
  57 e_surf_vm_state_t VirtualMachine::getState() {
  58   return p_vm_state;
  59 }
  60
  61 void VirtualMachine::setState(e_surf_vm_state_t state) {
  62   p_vm_state = state;
  63 }
  64 void VirtualMachine::turnOn() {
  65   if (isOff()) {
  66     Resource::turnOn();
  67     VMStateChangedCallbacks(this);
  68   }
  69 }
  70 void VirtualMachine::turnOff() {
  71   if (isOn()) {
  72     Resource::turnOff();
  73     VMStateChangedCallbacks(this);
  74   }
  75 }
  76
  77 /** @brief returns the physical machine on which the VM is running **/
  78 sg_host_t VirtualMachine::getPm() {
  79   return p_hostPM;
  80 }
  81
  82 }
  83 }