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, "Logging specific to the SURF VM module");
  11
  12 simgrid::surf::VMModel *surf_vm_model = NULL;
  13
  14 namespace simgrid {
  15 namespace surf {
  16
  17 /*************
  18  * Callbacks *
  19  *************/
  20
  21 simgrid::xbt::signal<void(simgrid::surf::VirtualMachine*)> VMCreatedCallbacks;
  22 simgrid::xbt::signal<void(simgrid::surf::VirtualMachine*)> VMDestructedCallbacks;
  23 simgrid::xbt::signal<void(simgrid::surf::VirtualMachine*)> VMStateChangedCallbacks;
  24
  25 /*********
  26  * Model *
  27  *********/
  28
  29 VMModel::vm_list_t VMModel::ws_vms;
  30
  31 /************
  32  * Resource *
  33  ************/
  34
  35 VirtualMachine::VirtualMachine(HostModel *model, const char *name, simgrid::s4u::Host *hostPM)
  36 : HostImpl(model, name, NULL, NULL, NULL)
  37 , hostPM_(hostPM)
  38 {
  39   VMModel::ws_vms.push_back(*this);
  40   simgrid::s4u::Host::by_name_or_create(name)->extension_set<simgrid::surf::HostImpl>(this);
  41 }
  42
  43 /*
  44  * A physical host does not disappear in the current SimGrid code, but a VM may disappear during a simulation.
  45  */
  46 VirtualMachine::~VirtualMachine()
  47 {
  48   VMDestructedCallbacks(this);
  49   VMModel::ws_vms.erase(VMModel::vm_list_t::s_iterator_to(*this));
  50   /* Free the cpu_action of the VM. */
  51   XBT_ATTRIB_UNUSED int ret = action_->unref();
  52   xbt_assert(ret == 1, "Bug: some resource still remains");
  53 }
  54
  55 e_surf_vm_state_t VirtualMachine::getState() {
  56   return p_vm_state;
  57 }
  58
  59 void VirtualMachine::setState(e_surf_vm_state_t state) {
  60   p_vm_state = state;
  61 }
  62 void VirtualMachine::turnOn() {
  63   if (isOff()) {
  64     Resource::turnOn();
  65     VMStateChangedCallbacks(this);
  66   }
  67 }
  68 void VirtualMachine::turnOff() {
  69   if (isOn()) {
  70     Resource::turnOff();
  71     VMStateChangedCallbacks(this);
  72   }
  73 }
  74
  75 /** @brief returns the physical machine on which the VM is running **/
  76 sg_host_t VirtualMachine::getPm() {
  77   return hostPM_;
  78 }
  79
  80 }
  81 }