1 /* Copyright (c) 2006-2018. 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_ENGINE_HPP
7 #define SIMGRID_S4U_ENGINE_HPP
14 #include <xbt/functional.hpp>
16 #include <simgrid/forward.h>
17 #include <simgrid/simix.hpp>
19 #include <simgrid/s4u/NetZone.hpp>
23 /** @brief Simulation engine
25 * This class is an interface to the simulation engine.
27 XBT_PUBLIC_CLASS Engine
30 /** Constructor, taking the command line parameters of your main function */
31 Engine(int* argc, char** argv);
34 /** Finalize the default engine and all its dependencies */
35 static void shutdown();
37 /** @brief Load a platform file describing the environment
39 * The environment is either a XML file following the simgrid.dtd formalism, or a lua file.
40 * Some examples can be found in the directory examples/platforms.
42 void loadPlatform(const char* platf);
44 /** Registers the main function of an actor that will be launched from the deployment file */
45 void registerFunction(const char* name, int (*code)(int, char**));
47 /** Registers a function as the default main function of actors
49 * It will be used as fallback when the function requested from the deployment file was not registered.
50 * It is used for trace-based simulations (see examples/msg/actions).
52 void registerDefault(int (*code)(int, char**));
54 /** @brief Load a deployment file and launch the actors that it contains */
55 void loadDeployment(const char* deploy);
59 void addHost(std::string name, simgrid::s4u::Host * host);
60 void delHost(std::string name);
63 simgrid::s4u::Host* hostByName(std::string name);
64 simgrid::s4u::Host* hostByNameOrNull(std::string name);
66 size_t getHostCount();
67 void getHostList(std::vector<Host*> * whereTo);
68 std::vector<Host*> getAllHosts();
70 size_t getLinkCount();
71 void getLinkList(std::vector<Link*> * list);
72 std::vector<Link*> getAllLinks();
74 /** @brief Run the simulation */
77 /** @brief Retrieve the simulation time */
78 static double getClock();
80 /** @brief Retrieve the engine singleton */
81 static s4u::Engine* getInstance();
83 /** @brief Retrieve the root netzone, containing all others */
84 simgrid::s4u::NetZone* getNetRoot();
86 /** @brief Retrieve the netzone of the given name (or nullptr if not found) */
87 simgrid::s4u::NetZone* getNetzoneByNameOrNull(const char* name);
89 /** @brief Retrieves all netzones of the same type than the subtype of the whereto vector */
90 template <class T> void getNetzoneByType(std::vector<T*> * whereto) { netzoneByTypeRecursive(getNetRoot(), whereto); }
91 /** @brief Retrieve the netcard of the given name (or nullptr if not found) */
92 simgrid::kernel::routing::NetPoint* getNetpointByNameOrNull(std::string name);
93 void getNetpointList(std::vector<simgrid::kernel::routing::NetPoint*> * list);
94 void netpointRegister(simgrid::kernel::routing::NetPoint * card);
95 void netpointUnregister(simgrid::kernel::routing::NetPoint * card);
97 template <class F> void registerFunction(const char* name)
99 simgrid::simix::registerFunction(name, [](std::vector<std::string> args) {
100 return simgrid::simix::ActorCode([args] {
101 F code(std::move(args));
107 template <class F> void registerFunction(const char* name, F code)
109 simgrid::simix::registerFunction(name, [code](std::vector<std::string> args) {
110 return simgrid::simix::ActorCode([code, args] { code(std::move(args)); });
114 /** Returns whether SimGrid was initialized yet -- mostly for internal use */
115 static bool isInitialized();
117 /** @brief set a configuration variable
119 * Do --help on any simgrid binary to see the list of currently existing configuration variables (see @ref options).
122 * e->setConfig("host/model","ptask_L07");
124 void setConfig(std::string str);
126 simgrid::kernel::EngineImpl* pimpl;
129 static s4u::Engine* instance_;
132 /** Callback fired when the platform is created (ie, the xml file parsed),
133 * right before the actual simulation starts. */
134 extern XBT_PUBLIC(xbt::signal<void()>) onPlatformCreated;
136 /** Callback fired when the main simulation loop ends, just before MSG_run (or similar) ends */
137 extern XBT_PUBLIC(xbt::signal<void()>) onSimulationEnd;
139 /** Callback fired when the time jumps into the future */
140 extern XBT_PUBLIC(xbt::signal<void(double)>) onTimeAdvance;
142 /** Callback fired when the time cannot jump because of inter-actors deadlock */
143 extern XBT_PUBLIC(xbt::signal<void(void)>) onDeadlock;
145 template <class T> XBT_PRIVATE void netzoneByTypeRecursive(s4u::NetZone* current, std::vector<T*>* whereto)
147 for (auto const& elem : *(current->getChildren())) {
148 netzoneByTypeRecursive(elem, whereto);
149 if (elem == dynamic_cast<T*>(elem))
150 whereto->push_back(dynamic_cast<T*>(elem));
154 } // namespace simgrid::s4u
156 #endif /* SIMGRID_S4U_ENGINE_HPP */