1 /* Copyright (c) 2004-2020. 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/kernel/actor/ActorImpl.hpp"
8 #include "src/surf/HostImpl.hpp"
11 #include <unordered_map>
13 #ifndef VM_INTERFACE_HPP_
14 #define VM_INTERFACE_HPP_
18 extern template class XBT_PUBLIC xbt::Extendable<vm::VirtualMachineImpl>;
26 /** @ingroup SURF_vm_interface
27 * @brief SURF VM interface class
28 * @details A VM represent a virtual machine
30 class XBT_PUBLIC VirtualMachineImpl : public surf::HostImpl, public simgrid::xbt::Extendable<VirtualMachineImpl> {
31 friend simgrid::s4u::VirtualMachine;
34 /** @brief Callbacks fired after VM creation. Signature: `void(VirtualMachineImpl&)` */
35 static xbt::signal<void(simgrid::vm::VirtualMachineImpl&)> on_creation;
36 /** @brief Callbacks fired after VM destruction. Signature: `void(VirtualMachineImpl const&)` */
37 static xbt::signal<void(simgrid::vm::VirtualMachineImpl const&)> on_destruction;
39 static std::deque<s4u::VirtualMachine*> allVms_;
41 explicit VirtualMachineImpl(s4u::VirtualMachine* piface, s4u::Host* host, int core_amount, size_t ramsize);
42 ~VirtualMachineImpl();
44 virtual void suspend(kernel::actor::ActorImpl* issuer);
45 virtual void resume();
46 virtual void shutdown(kernel::actor::ActorImpl* issuer);
48 /** @brief Change the physical host on which the given VM is running */
49 virtual void set_physical_host(s4u::Host* dest);
50 /** @brief Get the physical host on which the given VM is running */
51 s4u::Host* get_physical_host() { return physical_host_; }
53 sg_size_t get_ramsize() const { return ramsize_; }
54 void set_ramsize(sg_size_t ramsize) { ramsize_ = ramsize; }
56 s4u::VirtualMachine::state get_state() const { return vm_state_; }
57 void set_state(s4u::VirtualMachine::state state) { vm_state_ = state; }
59 unsigned int get_core_amount() { return core_amount_; }
60 kernel::resource::Action* get_action() { return action_; }
62 virtual void set_bound(double bound);
64 void update_action_weight();
66 void add_active_exec() { active_execs_++; }
67 void remove_active_exec() { active_execs_--; }
69 void start_migration() { is_migrating_ = true; }
70 void end_migration() { is_migrating_ = false; }
71 bool is_migrating() const { return is_migrating_; }
74 kernel::resource::Action* action_ = nullptr;
75 unsigned int active_execs_ = 0;
76 s4u::Host* physical_host_;
77 unsigned int core_amount_;
78 double user_bound_ = std::numeric_limits<double>::max();
80 s4u::VirtualMachine::state vm_state_ = s4u::VirtualMachine::state::CREATED;
81 bool is_migrating_ = false;
87 /** @ingroup SURF_vm_interface
88 * @brief SURF VM model interface class
89 * @details A model is an object which handle the interactions between its Resources and its Actions
91 class XBT_PRIVATE VMModel : public surf::HostModel {
95 double next_occurring_event(double now) override;
96 void update_actions_state(double /*now*/, double /*delta*/) override{};
97 kernel::resource::Action* execute_parallel(const std::vector<s4u::Host*>& host_list, const double* flops_amount,
98 const double* bytes_amount, double rate) override
106 XBT_PUBLIC_DATA simgrid::vm::VMModel* surf_vm_model;
108 #endif /* VM_INTERFACE_HPP_ */