1 /* Copyright (c) 2006-2015. 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_HOST_HPP
7 #define SIMGRID_S4U_HOST_HPP
11 #include <boost/unordered_map.hpp>
14 #include <xbt/string.hpp>
15 #include <xbt/signal.hpp>
16 #include <xbt/Extendable.hpp>
18 #include <simgrid/simix.h>
19 #include <simgrid/datatypes.h>
20 #include <simgrid/s4u/forward.hpp>
25 extern template class XBT_PUBLIC() Extendable<simgrid::s4u::Host>;
33 * An host represents some physical resource with computing and networking capabilities.
35 * All hosts are automatically created during the call of the method
36 * @link{simgrid::s4u::Engine::loadPlatform()}.
37 * You cannot create a host yourself.
39 * You can retrieve a particular host using simgrid::s4u::Host::byName()
40 * and actors can retrieve the host on which they run using simgrid::s4u::Host::current().
42 XBT_PUBLIC_CLASS Host :
43 public simgrid::xbt::Extendable<Host> {
46 explicit Host(const char *name);
48 /** Host destruction logic */
51 bool currentlyDestroying_ = false;
55 /** Retrieves an host from its name, or return nullptr */
56 static Host* by_name_or_null(const char* name);
57 /** Retrieves an host from its name, or die */
58 static s4u::Host *by_name(std::string name);
59 /** Retrieves the host on which the current actor is running */
60 static s4u::Host *current();
62 simgrid::xbt::string const& name() const { return name_; }
64 /** Turns that host on if it was previously off
66 * All actors on that host which were marked autorestart will be restarted automatically.
67 * This call does nothing if the host is already on.
70 /** Turns that host off. All actors are forcefully stopped. */
72 /** Returns if that host is currently up and running */
74 /** Returns if that host is currently down and offline */
75 bool isOff() { return !isOn(); }
79 xbt_dict_t properties();
80 const char*property(const char*key);
81 void setProperty(const char*key, const char *value);
82 xbt_swag_t processes();
83 double getPstateSpeedCurrent();
84 double getPstateSpeed(int pstate_index);
85 int pstatesCount() const;
86 void setPstate(int pstate_index);
88 void parameters(vm_params_t params);
89 void setParameters(vm_params_t params);
90 xbt_dict_t mountedStoragesAsDict(); // HACK
91 xbt_dynar_t attachedStorages();
93 /** Get an associative list [mount point]->[Storage] of all local mount points.
95 * This is defined in the platform file, and cannot be modified programatically (yet).
97 boost::unordered_map<std::string, Storage*> const &mountedStorages();
100 simgrid::xbt::string name_ = "noname";
101 boost::unordered_map<std::string, Storage*> *mounts = nullptr; // caching
104 // TODO, this could be a unique_ptr
105 /** DO NOT USE DIRECTLY (@todo: these should be protected, once our code is clean) */
106 surf::Cpu *pimpl_cpu = nullptr;
107 /** DO NOT USE DIRECTLY (@todo: these should be protected, once our code is clean) */
108 kernel::routing::NetCard *pimpl_netcard = nullptr;
111 /*** Called on each newly created object */
112 static simgrid::xbt::signal<void(Host&)> onCreation;
113 /*** Called just before destructing an object */
114 static simgrid::xbt::signal<void(Host&)> onDestruction;
115 /*** Called when the machine is turned on or off */
116 static simgrid::xbt::signal<void(Host&)> onStateChange;
119 }} // namespace simgrid::s4u
121 extern int MSG_HOST_LEVEL;
122 extern int USER_HOST_LEVEL;
124 #endif /* SIMGRID_S4U_HOST_HPP */
127 /* Bindings to the MSG hosts */
129 /* Copyright (c) 2006-2014. The SimGrid Team.
130 * All rights reserved. */
132 /* This program is free software; you can redistribute it and/or modify it
133 * under the terms of the license (GNU LGPL) which comes with this package. */
135 package org.simgrid.msg;
139 * This static method returns all of the hosts of the installed platform.
141 * @return An array containing all the hosts installed.
144 public native static Host[] all();
147 * This static method sets a mailbox to receive in asynchronous mode.
149 * All messages sent to this mailbox will be transferred to
150 * the receiver without waiting for the receive call.
151 * The receive call will still be necessary to use the received data.
152 * If there is a need to receive some messages asynchronously, and some not,
153 * two different mailboxes should be used.
155 * @param mailboxName The name of the mailbox
157 public static native void setAsyncMailbox(String mailboxName);
160 * This method returns the number of tasks currently running on a host.
161 * The external load (coming from an availability trace) is not taken in account.
163 * @return The number of tasks currently running on a host.
165 public native int getLoad();
168 /** This methods returns the list of storages attached to an host
169 * @return An array containing all storages (name) attached to the host
171 public native String[] getAttachedStorage();