1 /* Copyright (c) 2004-2016. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "simgrid/s4u/VirtualMachine.hpp"
7 #include "src/surf/HostImpl.hpp"
9 #ifndef VM_INTERFACE_HPP_
10 #define VM_INTERFACE_HPP_
12 #define GUESTOS_NOISE 100 // This value corresponds to the cost of the global action associated to the VM
13 // It corresponds to the cost of a VM running no tasks.
22 class XBT_PRIVATE VMModel;
23 class XBT_PRIVATE VirtualMachineImpl;
29 /** @ingroup SURF_callbacks
30 * @brief Callbacks fired after VM creation. Signature: `void(VirtualMachine*)`
32 extern XBT_PRIVATE simgrid::xbt::signal<void(simgrid::vm::VirtualMachineImpl*)> onVmCreation;
34 /** @ingroup SURF_callbacks
35 * @brief Callbacks fired after VM destruction. Signature: `void(VirtualMachine*)`
37 extern XBT_PRIVATE simgrid::xbt::signal<void(simgrid::vm::VirtualMachineImpl*)> onVmDestruction;
39 /** @ingroup SURF_callbacks
40 * @brief Callbacks after VM State changes. Signature: `void(VirtualMachine*)`
42 extern XBT_PRIVATE simgrid::xbt::signal<void(simgrid::vm::VirtualMachineImpl*)> onVmStateChange;
48 /** @ingroup SURF_vm_interface
49 * @brief SURF VM interface class
50 * @details A VM represent a virtual machine
52 class VirtualMachineImpl : public surf::HostImpl {
53 friend simgrid::s4u::VirtualMachine;
56 explicit VirtualMachineImpl(s4u::VirtualMachine* piface, s4u::Host* host);
57 ~VirtualMachineImpl();
59 /** @brief Suspend the VM */
60 virtual void suspend(smx_actor_t issuer);
62 /** @brief Resume the VM */
63 virtual void resume();
65 /** @brief Shutdown the VM */
66 virtual void shutdown(smx_actor_t issuer);
68 /** @brief Change the physical host on which the given VM is running */
69 virtual void setPm(s4u::Host* dest);
71 /** @brief Get the physical machine hosting the VM */
74 sg_size_t getRamsize();
76 virtual void setBound(double bound);
78 void getParams(vm_params_t params);
79 void setParams(vm_params_t params);
81 /* The vm object of the lower layer */
82 surf::Action* action_ = nullptr;
84 /* Dirty pages stuff */
86 xbt_dict_t dp_objs = nullptr;
87 double dp_updated_by_deleted_tasks = 0;
90 simgrid::s4u::Host* hostPM_;
93 e_surf_vm_state_t getState();
94 void setState(e_surf_vm_state_t state);
95 static std::deque<s4u::VirtualMachine*> allVms_;
97 bool isMigrating = false;
100 s_vm_params_t params_;
103 e_surf_vm_state_t vmState_ = SURF_VM_STATE_CREATED;
109 /** @ingroup SURF_vm_interface
110 * @brief SURF VM model interface class
111 * @details A model is an object which handle the interactions between its Resources and its Actions
113 class VMModel : public surf::HostModel {
115 void adjustWeightOfDummyCpuActions() override{};
117 double nextOccuringEvent(double now) override;
118 void updateActionsState(double /*now*/, double /*delta*/) override{};
123 XBT_PUBLIC_DATA(simgrid::vm::VMModel*) surf_vm_model;
125 #endif /* VM_INTERFACE_HPP_ */