X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/026c5a576fbea1da8f6290f4435d5424ce0efe8b..08e94eb0482589e4b287cbea301b84daf52635bd:/src/simix/ActorImpl.cpp

diff --git a/src/simix/ActorImpl.cpp b/src/simix/ActorImpl.cpp
index 57dc7a134e..2a664f42e5 100644
--- a/src/simix/ActorImpl.cpp
+++ b/src/simix/ActorImpl.cpp
@@ -16,8 +16,6 @@
 #include "src/mc/mc_replay.hpp"
 #include "src/mc/remote/Client.hpp"
 #include "src/simix/smx_host_private.hpp"
-#include "src/simix/smx_io_private.hpp"
-#include "src/simix/smx_synchro_private.hpp"
 #include "src/surf/HostImpl.hpp"
 #include "src/surf/cpu_interface.hpp"
 
@@ -50,61 +48,111 @@ int SIMIX_process_has_pending_comms(smx_actor_t process) {
   return process->comms.size() > 0;
 }
 
-/**
- * @brief Moves a process to the list of processes to destroy.
+namespace simgrid {
+namespace kernel {
+namespace actor {
+
+ActorImpl::ActorImpl(simgrid::xbt::string name, s4u::Host* host) : host_(host), name_(name), piface_(this)
+{
+  pid_ = simix_process_maxpid++;
+  simcall.issuer = this;
+}
+
+ActorImpl::~ActorImpl()
+{
+  delete this->context_;
+}
+/* Become an actor in the simulation
+ *
+ * Currently this can only be called by the main thread (once) and only work with some thread factories
+ * (currently ThreadContextFactory).
+ *
+ * In the future, it might be extended in order to attach other threads created by a third party library.
  */
-void SIMIX_process_cleanup(smx_actor_t process)
+
+ActorImplPtr ActorImpl::attach(std::string name, void* data, s4u::Host* host,
+                               std::unordered_map<std::string, std::string>* properties)
 {
-  XBT_DEBUG("Cleanup process %s (%p), waiting synchro %p", process->get_cname(), process,
-            process->waiting_synchro.get());
+  // This is mostly a copy/paste from create(), it'd be nice to share some code between those two functions.
 
-  simix_global->mutex.lock();
+  XBT_DEBUG("Attach process %s on host '%s'", name.c_str(), host->get_cname());
 
-  simix_global->process_list.erase(process->pid_);
-  if (process->host_ && process->host_process_list_hook.is_linked())
-    simgrid::xbt::intrusive_erase(process->host_->pimpl_->process_list_, *process);
-  if (not process->smx_destroy_list_hook.is_linked()) {
-#if SIMGRID_HAVE_MC
-    xbt_dynar_push_as(simix_global->dead_actors_vector, smx_actor_t, process);
-#endif
-    simix_global->process_to_destroy.push_back(*process);
+  if (not host->is_on()) {
+    XBT_WARN("Cannot launch process '%s' on failed host '%s'", name.c_str(), host->get_cname());
+    std::rethrow_exception(
+        std::make_exception_ptr(simgrid::HostFailureException(XBT_THROW_POINT, "Cannot attach actor on failed host.")));
   }
-  process->context_->iwannadie = false;
 
-  simix_global->mutex.unlock();
-}
+  ActorImpl* actor = new ActorImpl(xbt::string(name), host);
+  /* Actor data */
+  actor->set_user_data(data);
+  actor->code = nullptr;
 
-/**
- * Garbage collection
+  XBT_VERB("Create context %s", actor->get_cname());
+  xbt_assert(simix_global != nullptr, "simix is not initialized, please call MSG_init first");
+  actor->context_ = simix_global->context_factory->attach(actor);
+
+  /* Add properties */
+  if (properties != nullptr)
+    for (auto const& kv : *properties)
+      actor->set_property(kv.first, kv.second);
+
+  /* Add the process to it's host process list */
+  host->pimpl_->process_list_.push_back(*actor);
+
+  /* Now insert it in the global process list and in the process to run list */
+  simix_global->process_list[actor->get_pid()] = actor;
+  XBT_DEBUG("Inserting [%p] %s(%s) in the to_run list", actor, actor->get_cname(), host->get_cname());
+  simix_global->actors_to_run.push_back(actor);
+  intrusive_ptr_add_ref(actor);
+
+  auto* context = dynamic_cast<simgrid::kernel::context::AttachContext*>(actor->context_);
+  xbt_assert(nullptr != context, "Not a suitable context");
+  context->attach_start();
+
+  /* The on_creation() signal must be delayed until there, where the pid and everything is set */
+  simgrid::s4u::ActorPtr tmp = actor->iface(); // Passing this directly to on_creation will lead to crashes
+  simgrid::s4u::Actor::on_creation(tmp);
+
+  return ActorImplPtr(actor);
+}
+/** @brief Detach an actor attached with `attach()`
  *
- * Should be called some time to time to free the memory allocated for processes that have finished (or killed).
+ *  This is called when the current actor has finished its job.
+ *  Used in the main thread, it waits for the simulation to finish before returning. When it returns, the other
+ *  simulated actors and the maestro are destroyed.
  */
-void SIMIX_process_empty_trash()
+void ActorImpl::detach()
 {
-  while (not simix_global->process_to_destroy.empty()) {
-    smx_actor_t process = &simix_global->process_to_destroy.front();
-    simix_global->process_to_destroy.pop_front();
-    XBT_DEBUG("Getting rid of %p",process);
-    intrusive_ptr_release(process);
-  }
-#if SIMGRID_HAVE_MC
-  xbt_dynar_reset(simix_global->dead_actors_vector);
-#endif
-}
-
-namespace simgrid {
-namespace kernel {
-namespace actor {
+  auto* context = dynamic_cast<context::AttachContext*>(context::Context::self());
+  if (context == nullptr)
+    xbt_die("Not a suitable context");
 
-ActorImpl::ActorImpl(simgrid::xbt::string name, simgrid::s4u::Host* host) : name_(name), host_(host), piface_(this)
-{
-  pid_ = simix_process_maxpid++;
-  simcall.issuer = this;
+  context->get_actor()->cleanup();
+  context->attach_stop();
 }
 
-ActorImpl::~ActorImpl()
+void ActorImpl::cleanup()
 {
-  delete this->context_;
+  if (this == simix_global->maestro_process) /* Do not cleanup maestro */
+    return;
+
+  XBT_DEBUG("Cleanup actor %s (%p), waiting synchro %p", get_cname(), this, waiting_synchro.get());
+
+  simix_global->mutex.lock();
+
+  simix_global->process_list.erase(pid_);
+  if (host_ && host_process_list_hook.is_linked())
+    simgrid::xbt::intrusive_erase(host_->pimpl_->process_list_, *this);
+  if (not smx_destroy_list_hook.is_linked()) {
+#if SIMGRID_HAVE_MC
+    xbt_dynar_push_as(simix_global->dead_actors_vector, smx_actor_t, this);
+#endif
+    simix_global->actors_to_destroy.push_back(*this);
+  }
+  context_->iwannadie = false;
+
+  simix_global->mutex.unlock();
 }
 
 void ActorImpl::exit()
@@ -112,11 +160,11 @@ void ActorImpl::exit()
   context_->iwannadie = true;
   blocked_            = false;
   suspended_          = false;
-  exception           = nullptr;
+  exception_          = nullptr;
 
   // Forcefully kill the actor if its host is turned off. Not a HostFailureException because you should not survive that
   if (not host_->is_on())
-    this->throw_exception(std::make_exception_ptr(simgrid::kernel::context::StopRequest("host failed")));
+    this->throw_exception(std::make_exception_ptr(ForcefulKillException("host failed")));
 
   /* destroy the blocking synchro if any */
   if (waiting_synchro != nullptr) {
@@ -134,7 +182,7 @@ void ActorImpl::exit()
     } else if (comm != nullptr) {
       comms.remove(waiting_synchro);
       comm->cancel();
-      // Remove first occurrence of &process->simcall:
+      // Remove first occurrence of &actor->simcall:
       auto i = boost::range::find(waiting_synchro->simcalls_, &simcall);
       if (i != waiting_synchro->simcalls_.end())
         waiting_synchro->simcalls_.remove(&simcall);
@@ -143,7 +191,7 @@ void ActorImpl::exit()
         sleep->surf_action_->cancel();
       sleep->post();
     } else if (raw != nullptr) {
-      SIMIX_synchro_stop_waiting(this, &simcall);
+      raw->finish();
     } else if (io != nullptr) {
       io->cancel();
     } else {
@@ -156,24 +204,24 @@ void ActorImpl::exit()
   }
 }
 
-void ActorImpl::kill(smx_actor_t actor)
+void ActorImpl::kill(ActorImpl* actor)
 {
   if (actor->finished_) {
-    XBT_DEBUG("Ignoring request to kill process %s@%s that is already dead", actor->get_cname(),
+    XBT_DEBUG("Ignoring request to kill actor %s@%s that is already dead", actor->get_cname(),
               actor->host_->get_cname());
     return;
   }
 
-  XBT_DEBUG("Actor '%s'@%s is killing actor '%s'@%s", get_cname(), host_->get_cname(), actor->get_cname(),
-            actor->host_->get_cname());
+  XBT_DEBUG("Actor '%s'@%s is killing actor '%s'@%s", get_cname(), host_ ? host_->get_cname() : "", actor->get_cname(),
+            actor->host_ ? actor->host_->get_cname() : "");
 
   actor->exit();
 
-  if (std::find(begin(simix_global->process_to_run), end(simix_global->process_to_run), actor) ==
-          end(simix_global->process_to_run) &&
+  if (std::find(begin(simix_global->actors_to_run), end(simix_global->actors_to_run), actor) ==
+          end(simix_global->actors_to_run) &&
       actor != this) {
     XBT_DEBUG("Inserting %s in the to_run list", actor->get_cname());
-    simix_global->process_to_run.push_back(actor);
+    simix_global->actors_to_run.push_back(actor);
   }
 }
 
@@ -188,13 +236,18 @@ void ActorImpl::set_kill_time(double kill_time)
 {
   if (kill_time <= SIMIX_get_clock())
     return;
-  XBT_DEBUG("Set kill time %f for process %s@%s", kill_time, get_cname(), host_->get_cname());
-  kill_timer = SIMIX_timer_set(kill_time, [this] {
+  XBT_DEBUG("Set kill time %f for actor %s@%s", kill_time, get_cname(), host_->get_cname());
+  kill_timer = simix::Timer::set(kill_time, [this] {
     this->exit();
     kill_timer = nullptr;
   });
 }
 
+double ActorImpl::get_kill_time()
+{
+  return kill_timer ? kill_timer->get_date() : 0;
+}
+
 static void dying_daemon(int /*exit_status*/, void* data)
 {
   std::vector<ActorImpl*>* vect = &simix_global->daemons;
@@ -207,7 +260,45 @@ static void dying_daemon(int /*exit_status*/, void* data)
   vect->pop_back();
 }
 
-/** This process will be terminated automatically when the last non-daemon process finishes */
+void ActorImpl::yield()
+{
+  XBT_DEBUG("Yield actor '%s'", get_cname());
+
+  /* Go into sleep and return control to maestro */
+  context_->suspend();
+
+  /* Ok, maestro returned control to us */
+  XBT_DEBUG("Control returned to me: '%s'", get_cname());
+
+  if (context_->iwannadie) {
+
+    XBT_DEBUG("Actor %s@%s is dead", get_cname(), host_->get_cname());
+    // throw simgrid::kernel::context::ForcefulKillException(); Does not seem to properly kill the actor
+    context_->stop();
+    THROW_IMPOSSIBLE;
+  }
+
+  if (suspended_) {
+    XBT_DEBUG("Hey! I'm suspended.");
+
+    xbt_assert(exception_ == nullptr, "Gasp! This exception may be lost by subsequent calls.");
+    suspended_ = false;
+    suspend(this);
+  }
+
+  if (exception_ != nullptr) {
+    XBT_DEBUG("Wait, maestro left me an exception");
+    std::exception_ptr exception = std::move(exception_);
+    exception_                   = nullptr;
+    std::rethrow_exception(std::move(exception));
+  }
+
+  if (SMPI_switch_data_segment && not finished_) {
+    SMPI_switch_data_segment(iface());
+  }
+}
+
+/** This actor will be terminated automatically when the last non-daemon actor finishes */
 void ActorImpl::daemonize()
 {
   if (not daemon_) {
@@ -217,17 +308,17 @@ void ActorImpl::daemonize()
   }
 }
 
-simgrid::s4u::Actor* ActorImpl::restart()
+s4u::Actor* ActorImpl::restart()
 {
-  XBT_DEBUG("Restarting process %s on %s", get_cname(), host_->get_cname());
+  XBT_DEBUG("Restarting actor %s on %s", get_cname(), host_->get_cname());
 
-  // retrieve the arguments of the old process
-  simgrid::kernel::actor::ProcessArg arg = ProcessArg(host_, this);
+  // retrieve the arguments of the old actor
+  ProcessArg arg = ProcessArg(host_, this);
 
-  // kill the old process
+  // kill the old actor
   (this == simix_global->maestro_process) ? this->exit() : SIMIX_process_self()->kill(this);
 
-  // start the new process
+  // start the new actor
   ActorImplPtr actor =
       ActorImpl::create(arg.name, std::move(arg.code), arg.data, arg.host, arg.properties.get(), nullptr);
   actor->set_kill_time(arg.kill_time);
@@ -236,7 +327,7 @@ simgrid::s4u::Actor* ActorImpl::restart()
   return actor->ciface();
 }
 
-smx_activity_t ActorImpl::suspend(ActorImpl* issuer)
+activity::ActivityImplPtr ActorImpl::suspend(ActorImpl* issuer)
 {
   if (suspended_) {
     XBT_DEBUG("Actor '%s' is already suspended", get_cname());
@@ -253,7 +344,7 @@ smx_activity_t ActorImpl::suspend(ActorImpl* issuer)
 
     return nullptr;
   } else {
-    return activity::ExecImplPtr(new activity::ExecImpl("suspend", "", nullptr, this->host_))->start(0.0, 1.0, 0.0);
+    return activity::ExecImplPtr(new activity::ExecImpl("suspend", "", this->host_))->start(0.0, 1.0, 0.0);
   }
 }
 
@@ -277,9 +368,9 @@ void ActorImpl::resume()
   XBT_OUT();
 }
 
-smx_activity_t ActorImpl::join(smx_actor_t actor, double timeout)
+activity::ActivityImplPtr ActorImpl::join(smx_actor_t actor, double timeout)
 {
-  smx_activity_t res = this->sleep(timeout);
+  activity::ActivityImplPtr res = this->sleep(timeout);
   intrusive_ptr_add_ref(res.get());
   SIMIX_process_on_exit(actor,
                         [](int, void* arg) {
@@ -291,7 +382,8 @@ smx_activity_t ActorImpl::join(smx_actor_t actor, double timeout)
                         res.get());
   return res;
 }
-smx_activity_t ActorImpl::sleep(double duration)
+
+activity::ActivityImplPtr ActorImpl::sleep(double duration)
 {
   if (not host_->is_on())
     throw_exception(std::make_exception_ptr(simgrid::HostFailureException(
@@ -303,7 +395,7 @@ smx_activity_t ActorImpl::sleep(double duration)
 
 void ActorImpl::throw_exception(std::exception_ptr e)
 {
-  exception = e;
+  exception_ = e;
 
   if (suspended_)
     resume();
@@ -311,38 +403,33 @@ void ActorImpl::throw_exception(std::exception_ptr e)
   /* cancel the blocking synchro if any */
   if (waiting_synchro) {
 
-    simgrid::kernel::activity::ExecImplPtr exec =
-        boost::dynamic_pointer_cast<simgrid::kernel::activity::ExecImpl>(waiting_synchro);
+    activity::ExecImplPtr exec = boost::dynamic_pointer_cast<activity::ExecImpl>(waiting_synchro);
     if (exec != nullptr)
       exec->cancel();
 
-    simgrid::kernel::activity::CommImplPtr comm =
-        boost::dynamic_pointer_cast<simgrid::kernel::activity::CommImpl>(waiting_synchro);
+    activity::CommImplPtr comm = boost::dynamic_pointer_cast<activity::CommImpl>(waiting_synchro);
     if (comm != nullptr) {
       comms.remove(comm);
       comm->cancel();
     }
 
-    simgrid::kernel::activity::SleepImplPtr sleep =
-        boost::dynamic_pointer_cast<simgrid::kernel::activity::SleepImpl>(waiting_synchro);
+    activity::SleepImplPtr sleep = boost::dynamic_pointer_cast<activity::SleepImpl>(waiting_synchro);
     if (sleep != nullptr) {
       SIMIX_process_sleep_destroy(waiting_synchro);
-      if (std::find(begin(simix_global->process_to_run), end(simix_global->process_to_run), this) ==
-              end(simix_global->process_to_run) &&
+      if (std::find(begin(simix_global->actors_to_run), end(simix_global->actors_to_run), this) ==
+              end(simix_global->actors_to_run) &&
           this != SIMIX_process_self()) {
         XBT_DEBUG("Inserting [%p] %s in the to_run list", this, get_cname());
-        simix_global->process_to_run.push_back(this);
+        simix_global->actors_to_run.push_back(this);
       }
     }
 
-    simgrid::kernel::activity::RawImplPtr raw =
-        boost::dynamic_pointer_cast<simgrid::kernel::activity::RawImpl>(waiting_synchro);
+    activity::RawImplPtr raw = boost::dynamic_pointer_cast<activity::RawImpl>(waiting_synchro);
     if (raw != nullptr) {
-      SIMIX_synchro_stop_waiting(this, &simcall);
+      raw->finish();
     }
 
-    simgrid::kernel::activity::IoImplPtr io =
-        boost::dynamic_pointer_cast<simgrid::kernel::activity::IoImpl>(waiting_synchro);
+    activity::IoImplPtr io = boost::dynamic_pointer_cast<activity::IoImpl>(waiting_synchro);
     if (io != nullptr) {
       io->cancel();
     }
@@ -350,25 +437,26 @@ void ActorImpl::throw_exception(std::exception_ptr e)
   waiting_synchro = nullptr;
 }
 
-void ActorImpl::set_host(sg_host_t dest)
+void ActorImpl::set_host(s4u::Host* dest)
 {
   simgrid::xbt::intrusive_erase(host_->pimpl_->process_list_, *this);
   host_ = dest;
   dest->pimpl_->process_list_.push_back(*this);
 }
 
-ActorImplPtr ActorImpl::create(std::string name, simgrid::simix::ActorCode code, void* data, simgrid::s4u::Host* host,
-                               std::unordered_map<std::string, std::string>* properties, smx_actor_t parent_actor)
+ActorImplPtr ActorImpl::create(std::string name, simix::ActorCode code, void* data, s4u::Host* host,
+                               std::unordered_map<std::string, std::string>* properties, ActorImpl* parent_actor)
 {
 
   XBT_DEBUG("Start actor %s@'%s'", name.c_str(), host->get_cname());
 
   if (not host->is_on()) {
     XBT_WARN("Cannot launch actor '%s' on failed host '%s'", name.c_str(), host->get_cname());
-    return nullptr;
+    std::rethrow_exception(
+        std::make_exception_ptr(simgrid::HostFailureException(XBT_THROW_POINT, "Cannot create actor on failed host.")));
   }
 
-  ActorImpl* actor = new simgrid::kernel::actor::ActorImpl(simgrid::xbt::string(name), host);
+  ActorImpl* actor = new ActorImpl(simgrid::xbt::string(name), host);
 
   xbt_assert(code && host != nullptr, "Invalid parameters");
   /* actor data */
@@ -376,40 +464,40 @@ ActorImplPtr ActorImpl::create(std::string name, simgrid::simix::ActorCode code,
   actor->code = code;
 
   if (parent_actor != nullptr)
-    actor->ppid_ = parent_actor->pid_;
+    actor->set_ppid(parent_actor->get_pid());
 
   XBT_VERB("Create context %s", actor->get_cname());
-  actor->context_ = SIMIX_context_new(std::move(code), &SIMIX_process_cleanup, actor);
+  actor->context_ = simix_global->context_factory->create_context(std::move(code), actor);
 
   /* Add properties */
   if (properties != nullptr)
     for (auto const& kv : *properties)
       actor->set_property(kv.first, kv.second);
 
-  /* Add the process to its host's process list */
+  /* Add the actor to its host's actor list */
   host->pimpl_->process_list_.push_back(*actor);
 
   XBT_DEBUG("Start context '%s'", actor->get_cname());
 
-  /* Now insert it in the global process list and in the process to run list */
-  simix_global->process_list[actor->pid_] = actor;
+  /* Now insert it in the global actor list and in the actor to run list */
+  simix_global->process_list[actor->get_pid()] = actor;
   XBT_DEBUG("Inserting [%p] %s(%s) in the to_run list", actor, actor->get_cname(), host->get_cname());
-  simix_global->process_to_run.push_back(actor);
+  simix_global->actors_to_run.push_back(actor);
   intrusive_ptr_add_ref(actor);
 
   /* The on_creation() signal must be delayed until there, where the pid and everything is set */
-  simgrid::s4u::Actor::on_creation(actor->iface());
+  s4u::Actor::on_creation(actor->iface());
 
   return ActorImplPtr(actor);
 }
 
-void create_maestro(simgrid::simix::ActorCode code)
+void create_maestro(simix::ActorCode code)
 {
-  /* Create maestro process and initialize it */
-  smx_actor_t maestro = new simgrid::kernel::actor::ActorImpl(simgrid::xbt::string(""), /*host*/ nullptr);
+  /* Create maestro actor and initialize it */
+  ActorImpl* maestro = new ActorImpl(xbt::string(""), /*host*/ nullptr);
 
   if (not code) {
-    maestro->context_ = SIMIX_context_new(simgrid::simix::ActorCode(), nullptr, maestro);
+    maestro->context_ = simix_global->context_factory->create_context(simix::ActorCode(), maestro);
   } else {
     maestro->context_ = simix_global->context_factory->create_maestro(code, maestro);
   }
@@ -422,82 +510,16 @@ void create_maestro(simgrid::simix::ActorCode code)
 } // namespace kernel
 }
 
-smx_actor_t SIMIX_process_attach(const char* name, void* data, const char* hostname,
-                                 std::unordered_map<std::string, std::string>* properties, smx_actor_t parent_process)
-{
-  // This is mostly a copy/paste from SIMIX_process_new(),
-  // it'd be nice to share some code between those two functions.
-
-  sg_host_t host = sg_host_by_name(hostname);
-  XBT_DEBUG("Attach process %s on host '%s'", name, hostname);
-
-  if (not host->is_on()) {
-    XBT_WARN("Cannot launch process '%s' on failed host '%s'", name, hostname);
-    return nullptr;
-  }
-
-  smx_actor_t actor = new simgrid::kernel::actor::ActorImpl(simgrid::xbt::string(name), host);
-  /* Actor data */
-  actor->set_user_data(data);
-  actor->code = nullptr;
-
-  if (parent_process != nullptr)
-    actor->ppid_ = parent_process->pid_;
-
-  XBT_VERB("Create context %s", actor->get_cname());
-  xbt_assert(simix_global != nullptr, "simix is not initialized, please call MSG_init first");
-  actor->context_ = simix_global->context_factory->attach(&SIMIX_process_cleanup, actor);
-
-  /* Add properties */
-  if (properties != nullptr)
-    for (auto const& kv : *properties)
-      actor->set_property(kv.first, kv.second);
-
-  /* Add the process to it's host process list */
-  host->pimpl_->process_list_.push_back(*actor);
-
-  /* Now insert it in the global process list and in the process to run list */
-  simix_global->process_list[actor->pid_] = actor;
-  XBT_DEBUG("Inserting [%p] %s(%s) in the to_run list", actor, actor->get_cname(), host->get_cname());
-  simix_global->process_to_run.push_back(actor);
-  intrusive_ptr_add_ref(actor);
-
-  auto* context = dynamic_cast<simgrid::kernel::context::AttachContext*>(actor->context_);
-  xbt_assert(nullptr != context, "Not a suitable context");
-  context->attach_start();
-
-  /* The on_creation() signal must be delayed until there, where the pid and everything is set */
-  simgrid::s4u::ActorPtr tmp = actor->iface(); // Passing this directly to on_creation will lead to crashes
-  simgrid::s4u::Actor::on_creation(tmp);
-
-  return actor;
-}
-
 void SIMIX_process_detach()
 {
-  auto* context = dynamic_cast<simgrid::kernel::context::AttachContext*>(simgrid::kernel::context::Context::self());
-  if (context == nullptr)
-    xbt_die("Not a suitable context");
-
-  SIMIX_process_cleanup(context->get_actor());
-  context->attach_stop();
+  simgrid::kernel::actor::ActorImpl::detach();
 }
 
-/**
- * @brief Executes the processes from simix_global->process_to_run.
- *
- * The processes of simix_global->process_to_run are run (in parallel if
- * possible).  On exit, simix_global->process_to_run is empty, and
- * simix_global->process_that_ran contains the list of processes that just ran.
- * The two lists are swapped so, be careful when using them before and after a
- * call to this function.
- */
-void SIMIX_process_runall()
+smx_actor_t SIMIX_process_attach(const char* name, void* data, const char* hostname,
+                                 std::unordered_map<std::string, std::string>* properties,
+                                 smx_actor_t /*parent_process*/)
 {
-  SIMIX_context_runall();
-
-  simix_global->process_to_run.swap(simix_global->process_that_ran);
-  simix_global->process_to_run.clear();
+  return simgrid::kernel::actor::ActorImpl::attach(name, data, sg_host_by_name(hostname), properties).get();
 }
 
 /** @deprecated When this function gets removed, also remove the xbt_ex class, that is only there to help users to
@@ -506,7 +528,7 @@ void SIMIX_process_throw(smx_actor_t actor, xbt_errcat_t cat, int value, const c
 {
   SMX_EXCEPTION(actor, cat, value, msg);
 
-  if (actor->suspended_)
+  if (actor->is_suspended())
     actor->resume();
 
   /* cancel the blocking synchro if any */
@@ -528,18 +550,18 @@ void SIMIX_process_throw(smx_actor_t actor, xbt_errcat_t cat, int value, const c
         boost::dynamic_pointer_cast<simgrid::kernel::activity::SleepImpl>(actor->waiting_synchro);
     if (sleep != nullptr) {
       SIMIX_process_sleep_destroy(actor->waiting_synchro);
-      if (std::find(begin(simix_global->process_to_run), end(simix_global->process_to_run), actor) ==
-              end(simix_global->process_to_run) &&
+      if (std::find(begin(simix_global->actors_to_run), end(simix_global->actors_to_run), actor) ==
+              end(simix_global->actors_to_run) &&
           actor != SIMIX_process_self()) {
         XBT_DEBUG("Inserting [%p] %s in the to_run list", actor, actor->get_cname());
-        simix_global->process_to_run.push_back(actor);
+        simix_global->actors_to_run.push_back(actor);
       }
     }
 
     simgrid::kernel::activity::RawImplPtr raw =
         boost::dynamic_pointer_cast<simgrid::kernel::activity::RawImpl>(actor->waiting_synchro);
     if (raw != nullptr) {
-      SIMIX_synchro_stop_waiting(actor, &actor->simcall);
+      raw->finish();
     }
 
     simgrid::kernel::activity::IoImplPtr io =
@@ -631,7 +653,7 @@ void SIMIX_process_sleep_destroy(smx_activity_t synchro)
 {
   XBT_DEBUG("Destroy sleep synchro %p", synchro.get());
   simgrid::kernel::activity::SleepImplPtr sleep =
-      boost::dynamic_pointer_cast<simgrid::kernel::activity::SleepImpl>(synchro);
+      boost::static_pointer_cast<simgrid::kernel::activity::SleepImpl>(synchro);
 
   if (sleep->surf_action_) {
     sleep->surf_action_->unref();
@@ -646,49 +668,13 @@ void SIMIX_process_sleep_destroy(smx_activity_t synchro)
  *
  * @param self the current process
  */
-void SIMIX_process_yield(smx_actor_t self)
-{
-  XBT_DEBUG("Yield actor '%s'", self->get_cname());
-
-  /* Go into sleep and return control to maestro */
-  self->context_->suspend();
-
-  /* Ok, maestro returned control to us */
-  XBT_DEBUG("Control returned to me: '%s'", self->get_cname());
-
-  if (self->context_->iwannadie) {
-
-    XBT_DEBUG("Process %s@%s is dead", self->get_cname(), self->host_->get_cname());
-    // throw simgrid::kernel::context::StopRequest(); Does not seem to properly kill the actor
-    self->context_->stop();
-    THROW_IMPOSSIBLE;
-  }
-
-  if (self->suspended_) {
-    XBT_DEBUG("Hey! I'm suspended.");
-    xbt_assert(self->exception != nullptr, "Gasp! This exception may be lost by subsequent calls.");
-    self->suspended_ = false;
-    self->suspend(self);
-  }
-
-  if (self->exception != nullptr) {
-    XBT_DEBUG("Wait, maestro left me an exception");
-    std::exception_ptr exception = std::move(self->exception);
-    self->exception = nullptr;
-    std::rethrow_exception(std::move(exception));
-  }
-
-  if (SMPI_switch_data_segment && not self->finished_) {
-    SMPI_switch_data_segment(self->iface());
-  }
-}
 
 /** @brief Returns the list of processes to run.
  * @deprecated
  */
 const std::vector<smx_actor_t>& simgrid::simix::process_get_runnable()
 {
-  return simix_global->process_to_run;
+  return simix_global->actors_to_run;
 }
 
 /** @brief Returns the process from PID. */
@@ -703,7 +689,7 @@ void SIMIX_process_on_exit(smx_actor_t actor, int_f_pvoid_pvoid_t fun, void* dat
   SIMIX_process_on_exit(actor, [fun](int a, void* b) { fun((void*)(intptr_t)a, b); }, data);
 }
 
-void SIMIX_process_on_exit(smx_actor_t actor, std::function<void(int, void*)> fun, void* data)
+void SIMIX_process_on_exit(smx_actor_t actor, std::function<void(bool, void*)> fun, void* data)
 {
   xbt_assert(actor, "current process not found: are you in maestro context ?");