1 /* Copyright (c) 2018-2019. 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. */
7 #warning Try to work around https://bugs.python.org/issue11566
12 #pragma GCC diagnostic push
13 #pragma GCC diagnostic ignored "-Wunused-value"
16 #include <pybind11/functional.h>
17 #include <pybind11/pybind11.h> // Must come before our own stuff
18 #include <pybind11/stl.h>
21 #pragma GCC diagnostic pop
24 #include "src/kernel/context/Context.hpp"
25 #include <simgrid/Exception.hpp>
26 #include <simgrid/s4u/Actor.hpp>
27 #include <simgrid/s4u/Comm.hpp>
28 #include <simgrid/s4u/Exec.hpp>
29 #include <simgrid/s4u/Engine.hpp>
30 #include <simgrid/s4u/Host.hpp>
31 #include <simgrid/s4u/Mailbox.hpp>
37 namespace py = pybind11;
38 using simgrid::s4u::Actor;
39 using simgrid::s4u::ActorPtr;
40 using simgrid::s4u::Engine;
41 using simgrid::s4u::Host;
42 using simgrid::s4u::Mailbox;
44 XBT_LOG_NEW_DEFAULT_CATEGORY(python, "python");
46 PYBIND11_DECLARE_HOLDER_TYPE(T, boost::intrusive_ptr<T>)
50 static std::string get_simgrid_version()
55 sg_version_get(&major, &minor, &patch);
56 return simgrid::xbt::string_printf("%i.%i.%i", major, minor, patch);
59 static std::string simgrid_version = get_simgrid_version();
63 PYBIND11_MODULE(simgrid, m)
66 m.doc() = "SimGrid userspace API";
68 m.attr("simgrid_version") = simgrid_version;
70 // Internal exception used to kill actors and sweep the RAII chimney (free objects living on the stack)
71 static py::object pyForcefulKillEx(py::register_exception<simgrid::ForcefulKillException>(m, "ActorKilled"));
73 /* this_actor namespace */
74 void (*sleep_for_fun)(double) = &simgrid::s4u::this_actor::sleep_for; // pick the right overload
75 void (*sleep_until_fun)(double) = &simgrid::s4u::this_actor::sleep_until;
77 py::module m2 = m.def_submodule("this_actor", "Bindings of the s4u::this_actor namespace.");
78 m2.def("info", [](char* s) { XBT_INFO("%s", s); }, "Display a logging message of default priority.");
79 m2.def("error", [](char* s) { XBT_ERROR("%s", s); }, "Display a logging message of 'error' priority.");
80 m2.def("execute", py::overload_cast<double, double>(&simgrid::s4u::this_actor::execute),
81 "Block the current actor, computing the given amount of flops at the given priority, see :cpp:func:`void "
82 "simgrid::s4u::this_actor::execute(double, double)`",
83 py::arg("flops"), py::arg("priority") = 1);
84 m2.def("exec_init", [](double flops){return simgrid::s4u::this_actor::exec_init(flops);});
85 m2.def("get_host", &simgrid::s4u::this_actor::get_host, "Retrieves host on which the current actor is located");
86 m2.def("set_host", &simgrid::s4u::this_actor::set_host,
87 "Moves the current actor to another host, see :cpp:func:`void simgrid::s4u::this_actor::set_host()`",
89 m2.def("sleep_for", sleep_for_fun,
90 "Block the actor sleeping for that amount of seconds, see :cpp:func:`void simgrid::s4u::this_actor::sleep_for`", py::arg("duration"));
91 m2.def("sleep_until", sleep_until_fun,
92 "Block the actor sleeping until the specified timestamp, see :cpp:func:`void simgrid::s4u::this_actor::sleep_until`", py::arg("duration"));
93 m2.def("suspend", &simgrid::s4u::this_actor::suspend, "Suspend the current actor, that is blocked until resume()ed by another actor. see :cpp:func:`void simgrid::s4u::this_actor::suspend`");
94 m2.def("yield_", &simgrid::s4u::this_actor::yield,
95 "Yield the actor, see :cpp:func:`void simgrid::s4u::this_actor::yield()`");
96 m2.def("exit", &simgrid::s4u::this_actor::exit, "kill the current actor");
99 ActorPtr act = Actor::self();
100 simgrid::s4u::this_actor::on_exit([act, fun](bool /*failed*/) {
103 } catch (py::error_already_set& e) {
104 xbt_die("Error while executing the on_exit lambda: %s", e.what());
111 py::class_<Engine>(m, "Engine", "Simulation Engine, see :ref:`class s4u::Engine <API_s4u_Engine>`")
112 .def(py::init([](std::vector<std::string> args) -> simgrid::s4u::Engine* {
113 static char noarg[] = {'\0'};
114 int argc = args.size();
115 std::unique_ptr<char* []> argv(new char*[argc + 1]);
116 for (int i = 0; i != argc; ++i)
117 argv[i] = args[i].empty() ? noarg : &args[i].front();
118 argv[argc] = nullptr;
119 // Currently this can be dangling, we should wrap this somehow.
120 return new simgrid::s4u::Engine(&argc, argv.get());
122 .def_static("get_clock", &Engine::get_clock, "The simulation time, ie the amount of simulated seconds since the simulation start.")
123 .def("get_all_hosts", &Engine::get_all_hosts, "Returns the list of all hosts found in the platform")
124 .def("load_platform", &Engine::load_platform,
125 "Load a platform file describing the environment, see :cpp:func:`simgrid::s4u::Engine::load_platform()`")
126 .def("load_deployment", &Engine::load_deployment,
127 "Load a deployment file and launch the actors that it contains, see "
128 ":cpp:func:`simgrid::s4u::Engine::load_deployment()`")
129 .def("run", &Engine::run, "Run the simulation")
130 .def("register_actor",
131 [](Engine* e, const std::string& name, py::object fun_or_class) {
132 e->register_actor(name, [fun_or_class](std::vector<std::string> args) {
134 /* Convert the std::vector into a py::tuple */
135 py::tuple params(args.size() - 1);
136 for (size_t i = 1; i < args.size(); i++)
137 params[i - 1] = py::cast(args[i]);
139 py::object res = fun_or_class(*params);
141 /* If I was passed a class, I just built an instance, so I need to call it now */
142 if (py::isinstance<py::function>(res))
144 } catch (py::error_already_set& ex) {
145 if (ex.matches(pyForcefulKillEx)) {
146 XBT_VERB("Actor killed");
147 /* Stop here that ForcefulKill exception which was meant to free the RAII stuff on the stack */
154 "Registers the main function of an actor, see :cpp:func:`simgrid::s4u::Engine::register_actor()`");
157 py::class_<simgrid::s4u::Host, std::unique_ptr<Host, py::nodelete>>(m, "Host", "Simulation Engine, see :ref:`class s4u::Host <API_s4u_Host>`")
158 .def("by_name", &Host::by_name, "Retrieves a host from its name, or die")
159 .def("get_pstate_count", &Host::get_pstate_count, "Retrieve the cound of defined pstate levels, see :cpp:func:`simgrid::s4u::Host::get_pstate_count`")
160 .def("get_pstate_speed", &Host::get_pstate_speed, "Retrieve the maximal speed at the given pstate, see :cpp:func:`simgrid::s4u::Host::get_pstate_speed`")
161 .def_property("pstate", &Host::get_pstate, &Host::set_pstate, "The current pstate")
163 .def("current", &Host::current, "Retrieves the host on which the running actor is located, see :cpp:func:`simgrid::s4u::Host::current()`")
164 .def_property_readonly("name", [](Host* self) -> const std::string {
165 return std::string(self->get_name().c_str()); // Convert from xbt::string because of MC
166 }, "The name of this host")
167 .def_property_readonly("load", &Host::get_load,
168 "Returns the current computation load (in flops per second). This is the currently achieved speed. See :cpp:func:`simgrid::s4u::Host::get_load()`")
169 .def_property_readonly("speed", &Host::get_speed,
170 "The peak computing speed in flops/s at the current pstate, taking the external load into account. This is the max potential speed. See :cpp:func:`simgrid::s4u::Host::get_speed()`");
173 py::class_<simgrid::s4u::Mailbox, std::unique_ptr<Mailbox, py::nodelete>>(m, "Mailbox", "Mailbox, see :ref:`class s4u::Mailbox <API_s4u_Mailbox>`")
174 .def("__str__", [](Mailbox* self) -> const std::string {
175 return std::string("Mailbox(") + self->get_cname() + ")";
176 }, "Textual representation of the Mailbox`")
177 .def("by_name", &Mailbox::by_name, "Retrieve a Mailbox from its name, see :cpp:func:`simgrid::s4u::Mailbox::by_name()`")
178 .def_property_readonly("name", [](Mailbox* self) -> const std::string {
179 return std::string(self->get_name().c_str()); // Convert from xbt::string because of MC
180 }, "The name of that mailbox, see :cpp:func:`simgrid::s4u::Mailbox::get_name()`")
181 .def("put", [](Mailbox* self, py::object data, int size) {
183 self->put(data.ptr(), size);
184 }, "Blocking data transmission, see :cpp:func:`void simgrid::s4u::Mailbox::put(void*, uint64_t)`")
185 .def("put_async", [](Mailbox* self, py::object data, int size) -> simgrid::s4u::CommPtr {
187 return self->put_async(data.ptr(), size);
188 }, "Non-blocking data transmission, see :cpp:func:`void simgrid::s4u::Mailbox::put_async(void*, uint64_t)`")
189 .def("get", [](Mailbox* self) -> py::object {
190 py::object data = pybind11::reinterpret_steal<py::object>(static_cast<PyObject*>(self->get()));
193 }, "Blocking data reception, see :cpp:func:`void* simgrid::s4u::Mailbox::get()`");
196 py::class_<simgrid::s4u::Comm, simgrid::s4u::CommPtr>(m, "Comm",
197 "Communication, see :ref:`class s4u::Comm <API_s4u_Comm>`")
198 .def("test", [](simgrid::s4u::CommPtr self) { return self->test(); },
199 "Test whether the communication is terminated, see :cpp:func:`simgrid::s4u::Comm::test()`")
200 .def("wait", [](simgrid::s4u::CommPtr self) { self->wait(); },
201 "Block until the completion of that communication, see :cpp:func:`simgrid::s4u::Comm::wait()`")
202 .def("wait_all", [](std::vector<simgrid::s4u::CommPtr>* comms) { simgrid::s4u::Comm::wait_all(comms); },
203 "Block until the completion of all communications in the list, see "
204 ":cpp:func:`simgrid::s4u::Comm::wait_all()`")
206 "wait_any", [](std::vector<simgrid::s4u::CommPtr>* comms) { return simgrid::s4u::Comm::wait_any(comms); },
207 "Block until the completion of any communication in the list and return the index of the terminated one, see "
208 ":cpp:func:`simgrid::s4u::Comm::wait_any()`");
209 py::class_<simgrid::s4u::Exec, simgrid::s4u::ExecPtr>(m, "Exec", "Execution, see :ref:`class s4u::Exec <API_s4u_Exec>`")
210 .def_property_readonly("remaining", [](simgrid::s4u::ExecPtr self) { return self->get_remaining(); },
211 "Amount of flops that remain to be computed until completion, see :cpp:func:`simgrid::s4u::Exec::get_remaining()`")
212 .def_property_readonly("remaining_ratio", [](simgrid::s4u::ExecPtr self) { return self->get_remaining_ratio(); },
213 "Amount of work remaining until completion from 0 (completely done) to 1 (nothing done yet). See :cpp:func:`simgrid::s4u::Exec::get_remaining_ratio()`")
214 .def_property("host",
215 [](simgrid::s4u::ExecPtr self) {
216 simgrid::s4u::ExecSeqPtr seq = boost::dynamic_pointer_cast<simgrid::s4u::ExecSeq>(self);
218 return seq->get_host();
219 xbt_throw_unimplemented(__FILE__, __LINE__, "host of parallel executions is not implemented in python yet.");
221 [](simgrid::s4u::ExecPtr self, simgrid::s4u::Host* host) { self->set_host(host); },
222 "Host on which this execution runs. See :cpp:func:`simgrid::s4u::ExecSeq::get_host()`")
223 .def("test", [](simgrid::s4u::ExecPtr self) { return self->test(); },
224 "Test whether the execution is terminated, see :cpp:func:`simgrid::s4u::Exec::test()`")
225 .def("cancel", [](simgrid::s4u::ExecPtr self) { self->cancel(); },
226 "Cancel that execution, see :cpp:func:`simgrid::s4u::Exec::cancel()`")
227 .def("start", [](simgrid::s4u::ExecPtr self) { return self->start(); },
228 "Start that execution, see :cpp:func:`simgrid::s4u::Exec::start()`")
229 .def("wait", [](simgrid::s4u::ExecPtr self) { return self->wait(); },
230 "Block until the completion of that execution, see :cpp:func:`simgrid::s4u::Exec::wait()`");
233 py::class_<simgrid::s4u::Actor, ActorPtr>(m, "Actor",
234 "An actor is an independent stream of execution in your distributed "
235 "application, see :ref:`class s4u::Actor <API_s4u_Actor>`")
238 [](py::str name, py::object host, py::object fun, py::args args) {
240 return simgrid::s4u::Actor::create(name, host.cast<Host*>(), [fun, args]() {
244 } catch (py::error_already_set& ex) {
245 if (ex.matches(pyForcefulKillEx)) {
246 XBT_VERB("Actor killed");
247 /* Stop here that ForcefulKill exception which was meant to free the RAII stuff on the stack */
254 "Create an actor from a function or an object.")
255 .def_property("host", &Actor::get_host, &Actor::set_host, "The host on which this actor is located")
256 .def_property_readonly("name", &Actor::get_cname, "The name of this actor.")
257 .def_property_readonly("pid", &Actor::get_pid, "The PID (unique identifier) of this actor.")
258 .def_property_readonly("ppid", &Actor::get_ppid,
259 "The PID (unique identifier) of the actor that created this one.")
260 .def("by_pid", &Actor::by_pid, "Retrieve an actor by its PID")
261 .def("daemonize", &Actor::daemonize,
262 "This actor will be automatically terminated when the last non-daemon actor finishes (more info in the C++ "
264 .def("is_daemon", &Actor::is_daemon,
265 "Returns True if that actor is a daemon and will be terminated automatically when the last non-daemon actor "
267 .def("join", py::overload_cast<double>(&Actor::join),
268 "Wait for the actor to finish (more info in the C++ documentation).", py::arg("timeout"))
269 .def("kill", [](ActorPtr act) { act->kill(); }, "Kill that actor")
270 .def("kill_all", &Actor::kill_all, "Kill all actors but the caller.")
271 .def("self", &Actor::self, "Retrieves the current actor.")
272 .def("is_suspended", &Actor::is_suspended, "Returns True if that actor is currently suspended.")
273 .def("suspend", &Actor::suspend, "Suspend that actor, that is blocked until resume()ed by another actor.")
274 .def("resume", &Actor::resume, "Resume that actor, that was previously suspend()ed.");