1 /* Copyright (c) 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. */
11 #include <pybind11/functional.h>
12 #include <pybind11/pybind11.h>
13 #include <pybind11/stl.h>
15 #include <simgrid/config.h>
17 #include <xbt/string.hpp>
19 #include <simgrid/s4u/Actor.hpp>
20 #include <simgrid/s4u/Engine.hpp>
21 #include <simgrid/s4u/Host.hpp>
22 #include <simgrid/s4u/Mailbox.hpp>
24 #include <boost/intrusive_ptr.hpp>
26 namespace py = pybind11;
27 using simgrid::s4u::Actor;
28 using simgrid::s4u::ActorPtr;
29 using simgrid::s4u::Engine;
30 using simgrid::s4u::Host;
31 using simgrid::s4u::Mailbox;
33 XBT_LOG_NEW_DEFAULT_CATEGORY(python, "python");
35 PYBIND11_DECLARE_HOLDER_TYPE(T, boost::intrusive_ptr<T>);
39 static std::string get_simgrid_version()
41 int major, minor, patch;
42 sg_version_get(&major, &minor, &patch);
43 return simgrid::xbt::string_printf("%i.%i.%i", major, minor, patch);
46 static std::string simgrid_version = get_simgrid_version();
50 PYBIND11_MODULE(simgrid, m)
53 m.doc() = "SimGrid userspace API";
55 m.attr("simgrid_version") = simgrid_version;
57 m.def("info", [](char* s) { XBT_INFO("%s", s); }, "Display a logging message of default priority.");
59 /* this_actor namespace */
60 m.def("execute", py::overload_cast<double>(&simgrid::s4u::this_actor::execute),
61 "Block the current actor, computing the given amount of flops, see :cpp:func:`void simgrid::s4u::this_actor::execute(double)`");
62 m.def("execute", py::overload_cast<double, double>(&simgrid::s4u::this_actor::execute),
63 "Block the current actor, computing the given amount of flops at the given priority, see :cpp:func:`void simgrid::s4u::this_actor::execute(double, double)`");
64 m.def("yield_", &simgrid::s4u::this_actor::yield, "Yield the actor, see :cpp:func:`void simgrid::s4u::this_actor::yield()`");
67 py::class_<Engine>(m, "Engine", "Simulation Engine, see :ref:`class s4u::Engine <API_s4u_Engine>`")
68 .def(py::init([](std::vector<std::string> args) -> simgrid::s4u::Engine* {
69 static char noarg[] = {'\0'};
70 int argc = args.size();
71 std::unique_ptr<char* []> argv(new char*[argc + 1]);
72 for (int i = 0; i != argc; ++i)
73 argv[i] = args[i].empty() ? noarg : &args[i].front();
75 // Currently this can be dangling, we should wrap this somehow.
76 return new simgrid::s4u::Engine(&argc, argv.get());
78 .def("load_platform", &Engine::load_platform,
79 "Load a platform file describing the environment, see :cpp:func:`simgrid::s4u::Engine::load_platform()`")
80 .def("load_deployment", &Engine::load_deployment,
81 "Load a deployment file and launch the actors that it contains, see :cpp:func:`simgrid::s4u::Engine::load_deployment()`")
82 .def("run", &Engine::run, "Run the simulation")
83 .def("register_function", [](Engine*, std::string name, py::object obj) {
84 simgrid::simix::register_function(name,
85 [obj](std::vector<std::string> args) -> simgrid::simix::ActorCode {
86 return [obj, args]() {
87 /* Convert the std::vector into a py::tuple */
88 py::tuple params(args.size()-1);
89 for (size_t i=1; i<args.size(); i++)
90 params[i-1] = py::cast(args[i]);
92 PyObject *result = PyObject_CallObject(obj.ptr(), params.ptr());
94 throw pybind11::error_already_set();
96 /* If I was passed a class, I just built an instance, so I need to call it now */
97 if (PyCallable_Check(result)) {
98 py::object obj2 = pybind11::reinterpret_steal<py::object>(pybind11::handle(static_cast<PyObject*>(result)));
103 }, "Registers the main function of an actor, see :cpp:func:`simgrid::s4u::Engine::register_function()`")
107 py::class_<simgrid::s4u::Host, std::unique_ptr<Host, py::nodelete>>(m, "Host", "Simulation Engine, see :ref:`class s4u::Host <API_s4u_Host>`").def(
108 "by_name", &Host::by_name, "Retrieve a host from its name, or die");
111 py::class_<simgrid::s4u::Mailbox, std::unique_ptr<Mailbox, py::nodelete>>(m, "Mailbox", "Mailbox, see :ref:`class s4u::Mailbox <API_s4u_Mailbox>`")
112 .def("by_name", &Mailbox::by_name, "Retrieve a Mailbox from its name, see :cpp:func:`simgrid::s4u::Mailbox::by_name()`")
113 .def("get_name", &Mailbox::get_name, "Retrieves the name of that host, see :cpp:func:`simgrid::s4u::Mailbox::get_name()`")
114 .def("put", [](Mailbox self, py::object data, int size) {
116 self.put(data.ptr(), size);
117 }, "Blocking data transmission, see :cpp:func:`void simgrid::s4u::Mailbox::put(void*, uint64_t)`")
118 .def("get", [](Mailbox self) -> py::object {
119 py::object data = pybind11::reinterpret_steal<py::object>(pybind11::handle(static_cast<PyObject*>(self.get())));
122 }, "Blocking data reception, see :cpp:func:`void* simgrid::s4u::Mailbox::get()`");
125 py::class_<simgrid::s4u::Actor, ActorPtr>(m, "Actor", ""
126 "An actor is an independent stream of execution in your distributed application, see :ref:`class s4u::Actor <API_s4u_Actor>`")
128 .def("create", [](py::args args, py::kwargs kwargs) {
129 xbt_assert(args.size()>2, "Creating an actor takes at least 3 parameters: name, host, and main function.");
130 return simgrid::s4u::Actor::create(args[0].cast<std::string>(), args[1].cast<Host*>(), [args]() {
131 py::tuple funargs(args.size()-3);
132 for (size_t i=3; i<args.size(); i++)
133 funargs[i-3] = args[i];
135 PyObject *result = PyObject_CallObject(args[2].ptr(), funargs.ptr());
137 throw pybind11::error_already_set();
139 }, "Create an actor from a function or an object, see :cpp:func:`simgrid::s4u::Actor::create()`")
141 .def("create", [](std::string name, Host* host, py::object obj) -> ActorPtr {
142 xbt_assert(pybind11::hasattr(obj, "__call__"), "Your object does not implement the __call__() method");
144 return simgrid::s4u::Actor::create(name, host, [obj](){
145 obj.attr("__call__")();
147 }, "Create an actor from a python object")