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
9 #include <boost/unordered_map.hpp>
12 #include <xbt/string.hpp>
13 #include <xbt/signal.hpp>
14 #include <xbt/Extendable.hpp>
16 #include <simgrid/simix.h>
17 #include <simgrid/datatypes.h>
18 #include <simgrid/s4u/forward.hpp>
23 extern template class XBT_PUBLIC() Extendable<simgrid::s4u::Host>;
31 * An host represents some physical resource with computing and networking capabilities.
33 * All hosts are automatically created during the call of the method
34 * @link{simgrid::s4u::Engine::loadPlatform()}.
35 * You cannot create a host yourself.
37 * You can retrieve a particular host using simgrid::s4u::Host::byName()
38 * and actors can retrieve the host on which they run using simgrid::s4u::Host::current().
40 XBT_PUBLIC_CLASS Host :
41 public simgrid::xbt::Extendable<Host> {
44 explicit Host(const char *name);
45 public: // TODO, make me private
47 /** Do not use this function, it should be private */
48 static Host* by_name_or_create(const char* name);
50 /** Retrieves an host from its name, or return nullptr */
51 static Host* by_name_or_null(const char* name);
52 /** Retrieves an host from its name, or die */
53 static s4u::Host *by_name(std::string name);
54 /** Retrieves the host on which the current actor is running */
55 static s4u::Host *current();
57 simgrid::xbt::string const& name() const { return name_; }
59 /** Turns that host on if it was previously off
61 * All actors on that host which were marked autorestart will be restarted automatically.
62 * This call does nothing if the host is already on.
65 /** Turns that host off. All actors are forcefully stopped. */
67 /** Returns if that host is currently up and running */
69 bool isOff() { return !isOn(); }
73 xbt_dict_t properties();
74 const char*property(const char*key);
75 void setProperty(const char*key, const char *value);
76 xbt_swag_t processes();
77 double getPstateSpeedCurrent();
78 double getPstateSpeed(int pstate_index);
79 int pstatesCount() const;
80 void setPstate(int pstate_index);
82 void parameters(vm_params_t params);
83 void setParameters(vm_params_t params);
84 xbt_dict_t mountedStoragesAsDict(); // HACK
85 xbt_dynar_t attachedStorages();
87 /** Get an associative list [mount point]->[Storage] of all local mount points.
89 * This is defined in the platform file, and cannot be modified programatically (yet).
91 boost::unordered_map<std::string, Storage*> const &mountedStorages();
94 simgrid::xbt::string name_ = "noname";
95 boost::unordered_map<std::string, Storage*> *mounts = nullptr; // caching
98 // TODO, this could be a unique_ptr
99 /** DO NOT USE DIRECTLY (@todo: these should be protected, once our code is clean) */
100 surf::Cpu *pimpl_cpu = nullptr;
101 /** DO NOT USE DIRECTLY (@todo: these should be protected, once our code is clean) */
102 routing::NetCard *pimpl_netcard = nullptr;
105 /*** Called on each newly created object */
106 static simgrid::xbt::signal<void(Host&)> onCreation;
107 /*** Called just before destructing an object */
108 static simgrid::xbt::signal<void(Host&)> onDestruction;
109 /*** Called when the machine is turned on or off */
110 static simgrid::xbt::signal<void(Host&)> onStateChange;
113 }} // namespace simgrid::s4u
115 extern int MSG_HOST_LEVEL;
116 extern int SIMIX_HOST_LEVEL;
117 extern int USER_HOST_LEVEL;
119 #endif /* SIMGRID_S4U_HOST_HPP */
122 /* Bindings to the MSG hosts */
124 /* Copyright (c) 2006-2014. The SimGrid Team.
125 * All rights reserved. */
127 /* This program is free software; you can redistribute it and/or modify it
128 * under the terms of the license (GNU LGPL) which comes with this package. */
130 package org.simgrid.msg;
134 * This static method returns all of the hosts of the installed platform.
136 * @return An array containing all the hosts installed.
139 public native static Host[] all();
142 * This static method sets a mailbox to receive in asynchronous mode.
144 * All messages sent to this mailbox will be transferred to
145 * the receiver without waiting for the receive call.
146 * The receive call will still be necessary to use the received data.
147 * If there is a need to receive some messages asynchronously, and some not,
148 * two different mailboxes should be used.
150 * @param mailboxName The name of the mailbox
152 public static native void setAsyncMailbox(String mailboxName);
155 * This method returns the number of tasks currently running on a host.
156 * The external load (coming from an availability trace) is not taken in account.
158 * @return The number of tasks currently running on a host.
160 public native int getLoad();
163 /** This methods returns the list of storages attached to an host
164 * @return An array containing all storages (name) attached to the host
166 public native String[] getAttachedStorage();