1 /* Copyright (c) 2015-2022. 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 #ifndef SIMGRID_S4U_VM_HPP
7 #define SIMGRID_S4U_VM_HPP
9 #include <simgrid/forward.h>
10 #include <simgrid/s4u/Host.hpp>
11 #include <xbt/utility.hpp>
16 /** @brief Host extension for the VMs */
19 static xbt::Extension<s4u::Host, VmHostExt> EXTENSION_ID;
21 sg_size_t ramsize = 0; /* available ramsize (0= not taken into account) */
22 bool overcommit = true; /* Whether the host allows overcommiting more VM than the avail ramsize allows */
23 static void ensureVmExtInstalled();
30 * A VM represents a virtual machine (or a container) that hosts actors.
31 * The total computing power that the contained actors can get is constrained to the virtual machine size.
34 class XBT_PUBLIC VirtualMachine : public s4u::Host {
35 kernel::resource::VirtualMachineImpl* const pimpl_vm_;
38 explicit VirtualMachine(const std::string& name, Host* physical_host, int core_amount);
39 explicit VirtualMachine(const std::string& name, Host* physical_host, int core_amount, size_t ramsize);
43 VirtualMachine(VirtualMachine const&) = delete;
44 VirtualMachine& operator=(VirtualMachine const&) = delete;
47 // enum class State { ... }
48 XBT_DECLARE_ENUM_CLASS(State,
49 CREATED, /**< created, but not yet started */
51 SUSPENDED, /**< Suspend/resume does not involve disk I/O, so we assume there is no transition states. */
55 using state XBT_ATTRIB_DEPRECATED_v332("Please use VirtualMachine::State") = State;
58 kernel::resource::VirtualMachineImpl* get_vm_impl() const { return pimpl_vm_; }
63 void destroy() override;
66 VirtualMachine* set_pm(Host* pm);
67 size_t get_ramsize() const;
68 VirtualMachine* set_ramsize(size_t ramsize);
69 VirtualMachine* set_bound(double bound);
71 State get_state() const;
72 static void on_creation_cb(const std::function<void(VirtualMachine&)>& cb) { on_creation.connect(cb); }
73 static void on_start_cb(const std::function<void(VirtualMachine const&)>& cb) { on_start.connect(cb); }
74 static void on_started_cb(const std::function<void(VirtualMachine const&)>& cb) { on_started.connect(cb); }
75 static void on_shutdown_cb(const std::function<void(VirtualMachine const&)>& cb) { on_shutdown.connect(cb); }
76 static void on_suspend_cb(const std::function<void(VirtualMachine const&)>& cb) { on_suspend.connect(cb); }
77 static void on_resume_cb(const std::function<void(VirtualMachine const&)>& cb) { on_resume.connect(cb); }
78 static void on_destruction_cb(const std::function<void(VirtualMachine const&)>& cb) { on_destruction.connect(cb); }
79 static void on_migration_start_cb(const std::function<void(VirtualMachine const&)>& cb)
81 on_migration_start.connect(cb);
83 static void on_migration_end_cb(const std::function<void(VirtualMachine const&)>& cb)
85 on_migration_end.connect(cb);
88 /* FIXME the signals should be private */
89 static xbt::signal<void(VirtualMachine const&)> on_migration_start;
90 static xbt::signal<void(VirtualMachine const&)> on_migration_end;
91 static xbt::signal<void(VirtualMachine const&)> on_destruction;
95 static xbt::signal<void(VirtualMachine&)> on_creation;
96 static xbt::signal<void(VirtualMachine const&)> on_start;
97 static xbt::signal<void(VirtualMachine const&)> on_started;
98 static xbt::signal<void(VirtualMachine const&)> on_shutdown;
99 static xbt::signal<void(VirtualMachine const&)> on_suspend;
100 static xbt::signal<void(VirtualMachine const&)> on_resume;
103 } // namespace simgrid