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 class XBT_PUBLIC Engine {
29 /** Constructor, taking the command line parameters of your main function */
30 Engine(int* argc, char** argv);
33 /** Finalize the default engine and all its dependencies */
34 static void shutdown();
36 /** @brief Load a platform file describing the environment
38 * The environment is either a XML file following the simgrid.dtd formalism, or a lua file.
39 * Some examples can be found in the directory examples/platforms.
41 void loadPlatform(const char* platf);
43 /** Registers the main function of an actor that will be launched from the deployment file */
44 void registerFunction(const char* name, int (*code)(int, char**));
46 /** Registers a function as the default main function of actors
48 * It will be used as fallback when the function requested from the deployment file was not registered.
49 * It is used for trace-based simulations (see examples/msg/actions).
51 void registerDefault(int (*code)(int, char**));
53 /** @brief Load a deployment file and launch the actors that it contains */
54 void loadDeployment(const char* deploy);
59 void addHost(std::string name, simgrid::s4u::Host * host);
60 void delHost(std::string name);
61 void addStorage(std::string name, simgrid::s4u::Storage * storage);
62 void delStorage(std::string name);
65 simgrid::s4u::Host* hostByName(std::string name);
66 simgrid::s4u::Host* hostByNameOrNull(std::string name);
67 simgrid::s4u::Storage* storageByName(std::string name);
68 simgrid::s4u::Storage* storageByNameOrNull(std::string name);
70 size_t getHostCount();
71 void getHostList(std::vector<Host*> * whereTo);
72 std::vector<Host*> getAllHosts();
74 size_t getLinkCount();
75 void getLinkList(std::vector<Link*> * list);
76 std::vector<Link*> getAllLinks();
78 std::vector<Storage*> getAllStorages();
80 /** @brief Run the simulation */
83 /** @brief Retrieve the simulation time */
84 static double getClock();
86 /** @brief Retrieve the engine singleton */
87 static s4u::Engine* getInstance();
89 /** @brief Retrieve the root netzone, containing all others */
90 simgrid::s4u::NetZone* getNetRoot();
92 /** @brief Retrieve the netzone of the given name (or nullptr if not found) */
93 simgrid::s4u::NetZone* getNetzoneByNameOrNull(const char* name);
95 /** @brief Retrieves all netzones of the same type than the subtype of the whereto vector */
96 template <class T> void getNetzoneByType(std::vector<T*> * whereto) { netzoneByTypeRecursive(getNetRoot(), whereto); }
97 /** @brief Retrieve the netcard of the given name (or nullptr if not found) */
98 simgrid::kernel::routing::NetPoint* getNetpointByNameOrNull(std::string name);
99 void getNetpointList(std::vector<simgrid::kernel::routing::NetPoint*> * list);
100 void netpointRegister(simgrid::kernel::routing::NetPoint * card);
101 void netpointUnregister(simgrid::kernel::routing::NetPoint * card);
103 template <class F> void registerFunction(const char* name)
105 simgrid::simix::registerFunction(name, [](std::vector<std::string> args) {
106 return simgrid::simix::ActorCode([args] {
107 F code(std::move(args));
113 template <class F> void registerFunction(const char* name, F code)
115 simgrid::simix::registerFunction(name, [code](std::vector<std::string> args) {
116 return simgrid::simix::ActorCode([code, args] { code(std::move(args)); });
120 /** Returns whether SimGrid was initialized yet -- mostly for internal use */
121 static bool isInitialized();
123 /** @brief set a configuration variable
125 * Do --help on any simgrid binary to see the list of currently existing configuration variables (see @ref options).
128 * e->setConfig("host/model","ptask_L07");
130 void setConfig(std::string str);
132 simgrid::kernel::EngineImpl* pimpl;
135 static s4u::Engine* instance_;
138 /** Callback fired when the platform is created (ie, the xml file parsed),
139 * right before the actual simulation starts. */
140 extern XBT_PUBLIC xbt::signal<void()> onPlatformCreated;
142 /** Callback fired when the main simulation loop ends, just before MSG_run (or similar) ends */
143 extern XBT_PUBLIC xbt::signal<void()> onSimulationEnd;
145 /** Callback fired when the time jumps into the future */
146 extern XBT_PUBLIC xbt::signal<void(double)> onTimeAdvance;
148 /** Callback fired when the time cannot jump because of inter-actors deadlock */
149 extern XBT_PUBLIC xbt::signal<void(void)> onDeadlock;
151 template <class T> XBT_PRIVATE void netzoneByTypeRecursive(s4u::NetZone* current, std::vector<T*>* whereto)
153 for (auto const& elem : *(current->getChildren())) {
154 netzoneByTypeRecursive(elem, whereto);
155 if (elem == dynamic_cast<T*>(elem))
156 whereto->push_back(dynamic_cast<T*>(elem));
160 } // namespace simgrid::s4u
162 #endif /* SIMGRID_S4U_ENGINE_HPP */