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
11 #include <pybind11/functional.h>
12 #include <pybind11/pybind11.h> // Must come before our own stuff
13 #include <pybind11/stl.h>
15 #include "src/kernel/context/Context.hpp"
16 #include <simgrid/s4u/Actor.hpp>
17 #include <simgrid/s4u/Engine.hpp>
18 #include <simgrid/s4u/Host.hpp>
19 #include <simgrid/s4u/Mailbox.hpp>
25 namespace py = pybind11;
26 using simgrid::s4u::Actor;
27 using simgrid::s4u::ActorPtr;
28 using simgrid::s4u::Engine;
29 using simgrid::s4u::Host;
30 using simgrid::s4u::Mailbox;
32 XBT_LOG_NEW_DEFAULT_CATEGORY(python, "python");
34 PYBIND11_DECLARE_HOLDER_TYPE(T, boost::intrusive_ptr<T>);
38 static std::string get_simgrid_version()
43 sg_version_get(&major, &minor, &patch);
44 return simgrid::xbt::string_printf("%i.%i.%i", major, minor, patch);
47 static std::string simgrid_version = get_simgrid_version();
51 PYBIND11_MODULE(simgrid, m)
54 m.doc() = "SimGrid userspace API";
56 m.attr("simgrid_version") = simgrid_version;
58 // Internal exception used to kill actors and sweep the RAII chimney (free objects living on the stack)
59 py::object pyStopRequestEx = py::register_exception<simgrid::kernel::context::StopRequest>(m, "ActorKilled");
61 /* this_actor namespace */
62 void (*sleep_for_fun)(double) = &simgrid::s4u::this_actor::sleep_for; // pick the right overload
63 void (*sleep_until_fun)(double) = &simgrid::s4u::this_actor::sleep_until;
65 py::module m2 = m.def_submodule("this_actor", "Bindings of the s4u::this_actor namespace.");
66 m2.def("info", [](char* s) { XBT_INFO("%s", s); }, "Display a logging message of default priority.");
67 m2.def("error", [](char* s) { XBT_ERROR("%s", s); }, "Display a logging message of 'error' priority.");
68 m2.def("execute", py::overload_cast<double, double>(&simgrid::s4u::this_actor::execute),
69 "Block the current actor, computing the given amount of flops at the given priority, see :cpp:func:`void "
70 "simgrid::s4u::this_actor::execute(double, double)`",
71 py::arg("flops"), py::arg("priority") = 1);
72 m2.def("get_host", &simgrid::s4u::this_actor::get_host, "Retrieves host on which the current actor is located");
73 m2.def("migrate", &simgrid::s4u::this_actor::migrate, "Moves the current actor to another host, see :cpp:func:`void simgrid::s4u::this_actor::migrate()`",
75 m2.def("sleep_for", sleep_for_fun,
76 "Block the actor sleeping for that amount of seconds, see :cpp:func:`void simgrid::s4u::this_actor::sleep_for`", py::arg("duration"));
77 m2.def("sleep_until", sleep_until_fun,
78 "Block the actor sleeping until the specified timestamp, see :cpp:func:`void simgrid::s4u::this_actor::sleep_until`", py::arg("duration"));
79 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`");
80 m2.def("yield_", &simgrid::s4u::this_actor::yield,
81 "Yield the actor, see :cpp:func:`void simgrid::s4u::this_actor::yield()`");
82 m2.def("exit", &simgrid::s4u::this_actor::exit, "kill the current actor");
85 ActorPtr act = Actor::self();
86 simgrid::s4u::this_actor::on_exit(
87 [act, fun](int /*ignored*/, void* /*data*/) {
90 } catch (py::error_already_set& e) {
91 xbt_die("Error while executing the on_exit lambda: %s", e.what());
99 py::class_<Engine>(m, "Engine", "Simulation Engine, see :ref:`class s4u::Engine <API_s4u_Engine>`")
100 .def(py::init([](std::vector<std::string> args) -> simgrid::s4u::Engine* {
101 static char noarg[] = {'\0'};
102 int argc = args.size();
103 std::unique_ptr<char* []> argv(new char*[argc + 1]);
104 for (int i = 0; i != argc; ++i)
105 argv[i] = args[i].empty() ? noarg : &args[i].front();
106 argv[argc] = nullptr;
107 // Currently this can be dangling, we should wrap this somehow.
108 return new simgrid::s4u::Engine(&argc, argv.get());
110 .def("get_all_hosts", &Engine::get_all_hosts, "Returns the list of all hosts found in the platform")
111 .def("get_clock", &Engine::get_clock, "Retrieve the simulation time (in seconds)")
112 .def("load_platform", &Engine::load_platform,
113 "Load a platform file describing the environment, see :cpp:func:`simgrid::s4u::Engine::load_platform()`")
114 .def("load_deployment", &Engine::load_deployment,
115 "Load a deployment file and launch the actors that it contains, see "
116 ":cpp:func:`simgrid::s4u::Engine::load_deployment()`")
117 .def("run", &Engine::run, "Run the simulation")
118 .def("register_actor",
119 [pyStopRequestEx](Engine*, const std::string& name, py::object fun_or_class) {
120 simgrid::simix::register_function(
121 name, [pyStopRequestEx, fun_or_class](std::vector<std::string> args) -> simgrid::simix::ActorCode {
122 return [pyStopRequestEx, fun_or_class, args]() {
124 /* Convert the std::vector into a py::tuple */
125 py::tuple params(args.size() - 1);
126 for (size_t i = 1; i < args.size(); i++)
127 params[i - 1] = py::cast(args[i]);
129 py::object res = fun_or_class(*params);
131 /* If I was passed a class, I just built an instance, so I need to call it now */
132 if (py::isinstance<py::function>(res))
134 } catch (py::error_already_set& ex) {
135 if (ex.matches(pyStopRequestEx)) {
136 XBT_VERB("Actor killed");
137 /* Stop here that StopRequest exception which was meant to free the RAII stuff on the stack */
145 "Registers the main function of an actor, see :cpp:func:`simgrid::s4u::Engine::register_function()`");
148 py::class_<simgrid::s4u::Host, std::unique_ptr<Host, py::nodelete>>(m, "Host", "Simulation Engine, see :ref:`class s4u::Host <API_s4u_Host>`")
149 .def("by_name", &Host::by_name, "Retrieves a host from its name, or die")
150 .def("current", &Host::current, "Retrieves the host on which the running actor is located, see :cpp:func:`simgrid::s4u::Host::current()`")
151 .def_property_readonly("name", [](Host* self) -> const std::string {
152 return std::string(self->get_name().c_str()); // Convert from xbt::string because of MC
153 }, "The name of this host")
154 .def_property_readonly("speed", &Host::get_speed,
155 "The peak computing speed in flops/s at the current pstate, taking the external load into account, see :cpp:func:`simgrid::s4u::Host::get_speed()`");
158 py::class_<simgrid::s4u::Mailbox, std::unique_ptr<Mailbox, py::nodelete>>(m, "Mailbox", "Mailbox, see :ref:`class s4u::Mailbox <API_s4u_Mailbox>`")
159 .def("by_name", &Mailbox::by_name, "Retrieve a Mailbox from its name, see :cpp:func:`simgrid::s4u::Mailbox::by_name()`")
160 .def_property_readonly("name", [](Mailbox* self) -> const std::string {
161 return std::string(self->get_name().c_str()); // Convert from xbt::string because of MC
162 }, "The name of that mailbox, see :cpp:func:`simgrid::s4u::Mailbox::get_name()`")
163 .def("put", [](Mailbox self, py::object data, int size) {
165 self.put(data.ptr(), size);
166 }, "Blocking data transmission, see :cpp:func:`void simgrid::s4u::Mailbox::put(void*, uint64_t)`")
167 .def("get", [](Mailbox self) -> py::object {
168 py::object data = pybind11::reinterpret_steal<py::object>(pybind11::handle(static_cast<PyObject*>(self.get())));
171 }, "Blocking data reception, see :cpp:func:`void* simgrid::s4u::Mailbox::get()`");
174 py::class_<simgrid::s4u::Actor, ActorPtr>(m, "Actor",
175 "An actor is an independent stream of execution in your distributed "
176 "application, see :ref:`class s4u::Actor <API_s4u_Actor>`")
179 [pyStopRequestEx](py::str name, py::object host, py::object fun, py::args args) {
181 return simgrid::s4u::Actor::create(name, host.cast<Host*>(), [fun, args, pyStopRequestEx]() {
185 } catch (py::error_already_set& ex) {
186 if (ex.matches(pyStopRequestEx)) {
187 XBT_VERB("Actor killed");
188 /* Stop here that StopRequest exception which was meant to free the RAII stuff on the stack */
195 "Create an actor from a function or an object, see :cpp:func:`simgrid::s4u::Actor::create()`")
196 .def_property("host", &Actor::get_host, &Actor::migrate, "The host on which this actor is located")
197 .def_property_readonly("pid", &Actor::get_pid, "The PID (unique identifier) of this actor.")
198 .def("by_pid", &Actor::by_pid, "Retrieve an actor by its PID")
199 .def("daemonize", &Actor::daemonize,
200 "This actor will be automatically terminated when the last non-daemon actor finishes, see :cpp:func:`void "
201 "simgrid::s4u::Actor::daemonize()`")
202 .def("join", py::overload_cast<double>(&Actor::join),
203 "Wait for the actor to finish, see :cpp:func:`void simgrid::s4u::Actor::join(double)`", py::arg("timeout"))
204 .def("kill", [](ActorPtr act) { act->kill(); }, "Kill that actor")
205 .def("kill_all", &Actor::kill_all, "Kill all actors but the caller.")
206 .def("migrate", &Actor::migrate,
207 "Moves that actor to another host, see :cpp:func:`void simgrid::s4u::Actor::migrate()`", py::arg("dest"))
208 .def("self", &Actor::self, "Retrieves the current actor, see :cpp:func:`void simgrid::s4u::Actor::self()`")
209 .def("is_suspended", &Actor::is_suspended, "Returns True if that actor is currently suspended.")
210 .def("suspend", &Actor::suspend, "Suspend that actor, that is blocked until resume()ed by another actor.")
211 .def("resume", &Actor::resume, "Resume that actor, that was previously suspend()ed.");