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 // ***** Actor creation *****
25 ActorPtr Actor::self()
27 smx_context_t self_context = SIMIX_context_self();
28 if (self_context == nullptr)
29 return simgrid::s4u::ActorPtr();
31 return self_context->process()->iface();
34 ActorPtr Actor::createActor(const char* name, s4u::Host* host, std::function<void()> code)
36 simgrid::simix::ActorImpl* actor = simcall_process_create(name, std::move(code), nullptr, host, nullptr);
37 return actor->iface();
40 ActorPtr Actor::createActor(const char* name, s4u::Host* host, const char* function, std::vector<std::string> args)
42 simgrid::simix::ActorCodeFactory& factory = SIMIX_get_actor_code_factory(function);
43 simgrid::simix::ActorCode code = factory(std::move(args));
44 simgrid::simix::ActorImpl* actor = simcall_process_create(name, std::move(code), nullptr, host, nullptr);
45 return actor->iface();
48 void intrusive_ptr_add_ref(Actor* actor)
50 intrusive_ptr_add_ref(actor->pimpl_);
52 void intrusive_ptr_release(Actor* actor)
54 intrusive_ptr_release(actor->pimpl_);
57 // ***** Actor methods *****
60 simcall_process_join(this->pimpl_, -1);
63 void Actor::join(double timeout)
65 simcall_process_join(this->pimpl_, timeout);
68 void Actor::setAutoRestart(bool autorestart) {
69 simgrid::simix::kernelImmediate([this, autorestart]() { pimpl_->auto_restart = autorestart; });
72 void Actor::onExit(int_f_pvoid_pvoid_t fun, void* data)
74 simcall_process_on_exit(pimpl_, fun, data);
77 /** @brief Moves the actor to another host
79 * If the actor is currently blocked on an execution activity, the activity is also
80 * migrated to the new host. If it's blocked on another kind of activity, an error is
81 * raised as the mandated code is not written yet. Please report that bug if you need it.
83 * Asynchronous activities started by the actor are not migrated automatically, so you have
84 * to take care of this yourself (only you knows which ones should be migrated).
86 void Actor::migrate(Host* new_host)
88 simgrid::simix::kernelImmediate([this, new_host]() {
89 if (pimpl_->waiting_synchro != nullptr) {
90 // The actor is blocked on an activity. If it's an exec, migrate it too.
91 // FIXME: implement the migration of other kind of activities
92 simgrid::kernel::activity::ExecImplPtr exec =
93 boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(pimpl_->waiting_synchro);
94 xbt_assert(exec.get() != nullptr, "We can only migrate blocked actors when they are blocked on executions.");
95 exec->migrate(new_host);
97 SIMIX_process_change_host(this->pimpl_, new_host);
101 s4u::Host* Actor::getHost()
103 return this->pimpl_->host;
106 void Actor::daemonize()
108 simgrid::simix::kernelImmediate([this]() { pimpl_->daemonize(); });
111 const simgrid::xbt::string& Actor::getName() const
113 return this->pimpl_->getName();
116 const char* Actor::getCname() const
118 return this->pimpl_->getCname();
121 aid_t Actor::getPid()
123 return this->pimpl_->pid;
126 aid_t Actor::getPpid()
128 return this->pimpl_->ppid;
131 void Actor::suspend()
133 if (TRACE_actor_is_enabled())
134 simgrid::instr::Container::byName(instr_pid(this))->getState("MSG_PROCESS_STATE")->pushEvent("suspend");
136 simcall_process_suspend(pimpl_);
141 simgrid::simix::kernelImmediate([this] { pimpl_->resume(); });
142 if (TRACE_actor_is_enabled())
143 simgrid::instr::Container::byName(instr_pid(this))->getState("MSG_PROCESS_STATE")->popEvent();
146 int Actor::isSuspended()
148 return simgrid::simix::kernelImmediate([this] { return pimpl_->suspended; });
151 void Actor::setKillTime(double time) {
152 simcall_process_set_kill_time(pimpl_,time);
155 /** \brief Get the kill time of an actor(or 0 if unset). */
156 double Actor::getKillTime()
158 return SIMIX_timer_get_date(pimpl_->kill_timer);
161 void Actor::kill(aid_t pid)
163 smx_actor_t process = SIMIX_process_from_PID(pid);
164 if(process != nullptr) {
165 simgrid::simix::kernelImmediate([process] { SIMIX_process_kill(process, process); });
167 std::ostringstream oss;
168 oss << "kill: ("<< pid <<") - No such process" << std::endl;
169 throw std::runtime_error(oss.str());
173 smx_actor_t Actor::getImpl() {
178 smx_actor_t process = SIMIX_process_self();
179 simgrid::simix::kernelImmediate(
180 [this, process] { SIMIX_process_kill(pimpl_, (pimpl_ == simix_global->maestro_process) ? pimpl_ : process); });
183 // ***** Static functions *****
185 ActorPtr Actor::byPid(aid_t pid)
187 smx_actor_t process = SIMIX_process_from_PID(pid);
188 if (process != nullptr)
189 return process->iface();
194 void Actor::killAll()
196 simcall_process_killall(1);
199 void Actor::killAll(int resetPid)
201 simcall_process_killall(resetPid);
204 std::map<std::string, std::string>* Actor::getProperties()
206 return simgrid::simix::kernelImmediate([this] { return this->pimpl_->getProperties(); });
209 /** Retrieve the property value (or nullptr if not set) */
210 const char* Actor::getProperty(const char* key)
212 return simgrid::simix::kernelImmediate([this, key] { return pimpl_->getProperty(key); });
215 void Actor::setProperty(const char* key, const char* value)
217 simgrid::simix::kernelImmediate([this, key, value] { pimpl_->setProperty(key, value); });
220 Actor* Actor::restart()
222 return simgrid::simix::kernelImmediate([this]() { return pimpl_->restart(); });
225 // ***** this_actor *****
227 namespace this_actor {
229 /** Returns true if run from the kernel mode, and false if run from a real actor
231 * Everything that is run out of any actor (simulation setup before the engine is run,
232 * computing the model evolutions as a result to the actors' action, etc) is run in
233 * kernel mode, just as in any operating systems.
235 * In SimGrid, the actor in charge of doing the stuff in kernel mode is called Maestro,
236 * because it is the one scheduling when the others should move or wait.
240 smx_actor_t process = SIMIX_process_self();
241 return process == nullptr || process == simix_global->maestro_process;
244 void sleep_for(double duration)
247 simcall_process_sleep(duration);
252 simgrid::simix::kernelImmediate([] { /* do nothing*/ });
255 XBT_PUBLIC(void) sleep_until(double timeout)
257 double now = SIMIX_get_clock();
259 simcall_process_sleep(timeout - now);
262 void execute(double flops)
264 smx_activity_t s = simcall_execution_start(nullptr, flops, 1.0 /*priority*/, 0. /*bound*/, getHost());
265 simcall_execution_wait(s);
268 void execute(double flops, double priority)
270 smx_activity_t s = simcall_execution_start(nullptr, flops, 1 / priority /*priority*/, 0. /*bound*/, getHost());
271 simcall_execution_wait(s);
274 void parallel_execute(int host_nb, sg_host_t* host_list, double* flops_amount, double* bytes_amount, double timeout)
277 simcall_execution_parallel_start(nullptr, host_nb, host_list, flops_amount, bytes_amount, -1, timeout);
278 simcall_execution_wait(s);
281 void parallel_execute(int host_nb, sg_host_t* host_list, double* flops_amount, double* bytes_amount)
283 smx_activity_t s = simcall_execution_parallel_start(nullptr, host_nb, host_list, flops_amount, bytes_amount, -1, -1);
284 simcall_execution_wait(s);
287 ExecPtr exec_init(double flops_amount)
289 ExecPtr res = ExecPtr(new Exec());
290 res->host_ = getHost();
291 res->flops_amount_ = flops_amount;
292 res->setRemains(flops_amount);
296 ExecPtr exec_async(double flops)
298 ExecPtr res = exec_init(flops);
303 void* recv(MailboxPtr chan) // deprecated
308 void* recv(MailboxPtr chan, double timeout) // deprecated
310 return chan->get(timeout);
313 void send(MailboxPtr chan, void* payload, double simulatedSize) // deprecated
315 chan->put(payload, simulatedSize);
318 void send(MailboxPtr chan, void* payload, double simulatedSize, double timeout) // deprecated
320 chan->put(payload, simulatedSize, timeout);
323 CommPtr isend(MailboxPtr chan, void* payload, double simulatedSize) // deprecated
325 return chan->put_async(payload, simulatedSize);
328 CommPtr irecv(MailboxPtr chan, void** data) // deprecated
330 return chan->get_async(data);
335 return SIMIX_process_self()->pid;
340 return SIMIX_process_self()->ppid;
343 std::string getName()
345 return SIMIX_process_self()->getName();
348 const char* getCname()
350 return SIMIX_process_self()->getCname();
355 return SIMIX_process_self()->host;
360 if (TRACE_actor_is_enabled())
361 instr::Container::byName(getName() + "-" + std::to_string(getPid()))
362 ->getState("MSG_PROCESS_STATE")
363 ->pushEvent("suspend");
364 simcall_process_suspend(SIMIX_process_self());
369 smx_actor_t process = SIMIX_process_self();
370 simgrid::simix::kernelImmediate([process] { process->resume(); });
372 if (TRACE_actor_is_enabled())
373 instr::Container::byName(getName() + "-" + std::to_string(getPid()))->getState("MSG_PROCESS_STATE")->popEvent();
378 smx_actor_t process = SIMIX_process_self();
379 return simgrid::simix::kernelImmediate([process] { return process->suspended; });
384 smx_actor_t process = SIMIX_process_self();
385 simgrid::simix::kernelImmediate([process] { SIMIX_process_kill(process, process); });
388 void onExit(int_f_pvoid_pvoid_t fun, void* data)
390 simcall_process_on_exit(SIMIX_process_self(), fun, data);
393 /** @brief Moves the current actor to another host
395 * @see simgrid::s4u::Actor::migrate() for more information
397 void migrate(Host* new_host)
399 SIMIX_process_self()->iface()->migrate(new_host);