1 /* Copyright (c) 2006-2017. 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. */
8 #include "simgrid/s4u/Actor.hpp"
9 #include "simgrid/s4u/Comm.hpp"
10 #include "simgrid/s4u/Exec.hpp"
11 #include "simgrid/s4u/Host.hpp"
12 #include "simgrid/s4u/Mailbox.hpp"
14 #include "src/kernel/context/Context.hpp"
15 #include "src/simix/smx_private.hpp"
19 XBT_LOG_NEW_DEFAULT_CATEGORY(s4u_actor, "S4U actors");
24 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::onCreation;
25 simgrid::xbt::signal<void(simgrid::s4u::ActorPtr)> s4u::Actor::onDestruction;
27 // ***** Actor creation *****
28 ActorPtr Actor::self()
30 smx_context_t self_context = SIMIX_context_self();
31 if (self_context == nullptr)
32 return simgrid::s4u::ActorPtr();
34 return self_context->process()->iface();
37 ActorPtr Actor::createActor(const char* name, s4u::Host* host, std::function<void()> code)
39 simgrid::simix::ActorImpl* actor = simcall_process_create(name, std::move(code), nullptr, host, nullptr);
40 return actor->iface();
43 ActorPtr Actor::createActor(const char* name, s4u::Host* host, const char* function, std::vector<std::string> args)
45 simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(function);
46 simgrid::simix::ActorCode code = factory(std::move(args));
47 simgrid::simix::ActorImpl* actor = simcall_process_create(name, std::move(code), nullptr, host, nullptr);
48 return actor->iface();
51 void intrusive_ptr_add_ref(Actor* actor)
53 intrusive_ptr_add_ref(actor->pimpl_);
55 void intrusive_ptr_release(Actor* actor)
57 intrusive_ptr_release(actor->pimpl_);
60 // ***** Actor methods *****
63 simcall_process_join(this->pimpl_, -1);
66 void Actor::join(double timeout)
68 simcall_process_join(this->pimpl_, timeout);
71 void Actor::setAutoRestart(bool autorestart) {
72 simgrid::simix::kernelImmediate([this, autorestart]() { pimpl_->auto_restart = autorestart; });
75 void Actor::onExit(int_f_pvoid_pvoid_t fun, void* data)
77 simcall_process_on_exit(pimpl_, fun, data);
80 /** @brief Moves the actor to another host
82 * If the actor is currently blocked on an execution activity, the activity is also
83 * migrated to the new host. If it's blocked on another kind of activity, an error is
84 * raised as the mandated code is not written yet. Please report that bug if you need it.
86 * Asynchronous activities started by the actor are not migrated automatically, so you have
87 * to take care of this yourself (only you knows which ones should be migrated).
89 void Actor::migrate(Host* new_host)
91 simgrid::simix::kernelImmediate([this, new_host]() {
92 if (pimpl_->waiting_synchro != nullptr) {
93 // The actor is blocked on an activity. If it's an exec, migrate it too.
94 // FIXME: implement the migration of other kind of activities
95 simgrid::kernel::activity::ExecImplPtr exec =
96 boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_->waiting_synchro);
97 xbt_assert(exec.get() != nullptr, "We can only migrate blocked actors when they are blocked on executions.");
98 exec->migrate(new_host);
100 SIMIX_process_change_host(this->pimpl_, new_host);
104 s4u::Host* Actor::getHost()
106 return this->pimpl_->host;
109 void Actor::daemonize()
111 simgrid::simix::kernelImmediate([this]() { pimpl_->daemonize(); });
114 bool Actor::isDaemon()
116 return this->pimpl_->isDaemon();
119 const simgrid::xbt::string& Actor::getName() const
121 return this->pimpl_->getName();
124 const char* Actor::getCname() const
126 return this->pimpl_->getCname();
129 aid_t Actor::getPid()
131 return this->pimpl_->pid;
134 aid_t Actor::getPpid()
136 return this->pimpl_->ppid;
139 void Actor::suspend()
141 if (TRACE_actor_is_enabled())
142 simgrid::instr::Container::byName(instr_pid(this))->getState("MSG_PROCESS_STATE")->pushEvent("suspend");
144 simcall_process_suspend(pimpl_);
149 simgrid::simix::kernelImmediate([this] { pimpl_->resume(); });
150 if (TRACE_actor_is_enabled())
151 simgrid::instr::Container::byName(instr_pid(this))->getState("MSG_PROCESS_STATE")->popEvent();
154 int Actor::isSuspended()
156 return simgrid::simix::kernelImmediate([this] { return pimpl_->suspended; });
159 void Actor::setKillTime(double time) {
160 simcall_process_set_kill_time(pimpl_,time);
163 /** \brief Get the kill time of an actor(or 0 if unset). */
164 double Actor::getKillTime()
166 return SIMIX_timer_get_date(pimpl_->kill_timer);
169 void Actor::kill(aid_t pid)
171 smx_actor_t process = SIMIX_process_from_PID(pid);
172 if(process != nullptr) {
173 simgrid::simix::kernelImmediate([process] { SIMIX_process_kill(process, process); });
175 std::ostringstream oss;
176 oss << "kill: ("<< pid <<") - No such process" << std::endl;
177 throw std::runtime_error(oss.str());
181 smx_actor_t Actor::getImpl() {
186 smx_actor_t process = SIMIX_process_self();
187 simgrid::simix::kernelImmediate(
188 [this, process] { SIMIX_process_kill(pimpl_, (pimpl_ == simix_global->maestro_process) ? pimpl_ : process); });
191 // ***** Static functions *****
193 ActorPtr Actor::byPid(aid_t pid)
195 smx_actor_t process = SIMIX_process_from_PID(pid);
196 if (process != nullptr)
197 return process->iface();
202 void Actor::killAll()
204 simcall_process_killall(1);
207 void Actor::killAll(int resetPid)
209 simcall_process_killall(resetPid);
212 std::map<std::string, std::string>* Actor::getProperties()
214 return simgrid::simix::kernelImmediate([this] { return this->pimpl_->getProperties(); });
217 /** Retrieve the property value (or nullptr if not set) */
218 const char* Actor::getProperty(const char* key)
220 return simgrid::simix::kernelImmediate([this, key] { return pimpl_->getProperty(key); });
223 void Actor::setProperty(const char* key, const char* value)
225 simgrid::simix::kernelImmediate([this, key, value] { pimpl_->setProperty(key, value); });
228 Actor* Actor::restart()
230 return simgrid::simix::kernelImmediate([this]() { return pimpl_->restart(); });
233 // ***** this_actor *****
235 namespace this_actor {
237 /** Returns true if run from the kernel mode, and false if run from a real actor
239 * Everything that is run out of any actor (simulation setup before the engine is run,
240 * computing the model evolutions as a result to the actors' action, etc) is run in
241 * kernel mode, just as in any operating systems.
243 * In SimGrid, the actor in charge of doing the stuff in kernel mode is called Maestro,
244 * because it is the one scheduling when the others should move or wait.
248 smx_actor_t process = SIMIX_process_self();
249 return process == nullptr || process == simix_global->maestro_process;
252 void sleep_for(double duration)
255 simcall_process_sleep(duration);
260 simgrid::simix::kernelImmediate([] { /* do nothing*/ });
263 XBT_PUBLIC(void) sleep_until(double timeout)
265 double now = SIMIX_get_clock();
267 simcall_process_sleep(timeout - now);
270 void execute(double flops)
272 smx_activity_t s = simcall_execution_start(nullptr, flops, 1.0 /*priority*/, 0. /*bound*/, getHost());
273 simcall_execution_wait(s);
276 void execute(double flops, double priority)
278 smx_activity_t s = simcall_execution_start(nullptr, flops, 1 / priority /*priority*/, 0. /*bound*/, getHost());
279 simcall_execution_wait(s);
282 void parallel_execute(int host_nb, sg_host_t* host_list, double* flops_amount, double* bytes_amount, double timeout)
285 simcall_execution_parallel_start(nullptr, host_nb, host_list, flops_amount, bytes_amount, -1, timeout);
286 simcall_execution_wait(s);
289 void parallel_execute(int host_nb, sg_host_t* host_list, double* flops_amount, double* bytes_amount)
291 smx_activity_t s = simcall_execution_parallel_start(nullptr, host_nb, host_list, flops_amount, bytes_amount, -1, -1);
292 simcall_execution_wait(s);
295 ExecPtr exec_init(double flops_amount)
297 ExecPtr res = ExecPtr(new Exec());
298 res->host_ = getHost();
299 res->flops_amount_ = flops_amount;
300 res->setRemains(flops_amount);
304 ExecPtr exec_async(double flops)
306 ExecPtr res = exec_init(flops);
311 void* recv(MailboxPtr chan) // deprecated
316 void* recv(MailboxPtr chan, double timeout) // deprecated
318 return chan->get(timeout);
321 void send(MailboxPtr chan, void* payload, double simulatedSize) // deprecated
323 chan->put(payload, simulatedSize);
326 void send(MailboxPtr chan, void* payload, double simulatedSize, double timeout) // deprecated
328 chan->put(payload, simulatedSize, timeout);
331 CommPtr isend(MailboxPtr chan, void* payload, double simulatedSize) // deprecated
333 return chan->put_async(payload, simulatedSize);
336 CommPtr irecv(MailboxPtr chan, void** data) // deprecated
338 return chan->get_async(data);
343 return SIMIX_process_self()->pid;
348 return SIMIX_process_self()->ppid;
351 std::string getName()
353 return SIMIX_process_self()->getName();
356 const char* getCname()
358 return SIMIX_process_self()->getCname();
363 return SIMIX_process_self()->host;
368 if (TRACE_actor_is_enabled())
369 instr::Container::byName(getName() + "-" + std::to_string(getPid()))
370 ->getState("MSG_PROCESS_STATE")
371 ->pushEvent("suspend");
372 simcall_process_suspend(SIMIX_process_self());
377 smx_actor_t process = SIMIX_process_self();
378 simgrid::simix::kernelImmediate([process] { process->resume(); });
380 if (TRACE_actor_is_enabled())
381 instr::Container::byName(getName() + "-" + std::to_string(getPid()))->getState("MSG_PROCESS_STATE")->popEvent();
386 smx_actor_t process = SIMIX_process_self();
387 return simgrid::simix::kernelImmediate([process] { return process->suspended; });
392 smx_actor_t process = SIMIX_process_self();
393 simgrid::simix::kernelImmediate([process] { SIMIX_process_kill(process, process); });
396 void onExit(int_f_pvoid_pvoid_t fun, void* data)
398 simcall_process_on_exit(SIMIX_process_self(), fun, data);
401 /** @brief Moves the current actor to another host
403 * @see simgrid::s4u::Actor::migrate() for more information
405 void migrate(Host* new_host)
407 SIMIX_process_self()->iface()->migrate(new_host);