X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/dccf1b41e9c7b5a696f01abceaa2779fe65f154f..a851f5dfed8bd7b708b0d5b426f95fc23c3a3a96:/src/kernel/activity/ActivityImpl.cpp

diff --git a/src/kernel/activity/ActivityImpl.cpp b/src/kernel/activity/ActivityImpl.cpp
index e6723849ac..f62f74f17f 100644
--- a/src/kernel/activity/ActivityImpl.cpp
+++ b/src/kernel/activity/ActivityImpl.cpp
@@ -1,25 +1,127 @@
-/* Copyright (c) 2007-2016. The SimGrid Team. All rights reserved.          */
+/* Copyright (c) 2007-2020. The SimGrid Team. All rights reserved.          */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
 
 #include "src/kernel/activity/ActivityImpl.hpp"
+#include "simgrid/modelchecker.h"
+#include "src/mc/mc_replay.hpp"
+#include "src/simix/smx_private.hpp"
+#include <cmath> // isfinite()
 
-simgrid::kernel::activity::ActivityImpl::ActivityImpl() = default;
-simgrid::kernel::activity::ActivityImpl::~ActivityImpl() = default;
+XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_process);
 
-void simgrid::kernel::activity::ActivityImpl::ref()
+namespace simgrid {
+namespace kernel {
+namespace activity {
+
+ActivityImpl::~ActivityImpl()
 {
-  refcount++;
+  clean_action();
+  XBT_DEBUG("Destroy activity %p", this);
+}
+
+void ActivityImpl::register_simcall(smx_simcall_t simcall)
+{
+  simcalls_.push_back(simcall);
+  simcall->issuer_->waiting_synchro = this;
+}
+
+void ActivityImpl::clean_action()
+{
+  if (surf_action_) {
+    surf_action_->unref();
+    surf_action_ = nullptr;
+  }
+}
+
+double ActivityImpl::get_remaining() const
+{
+  return surf_action_ ? surf_action_->get_remains() : 0;
+}
+
+bool ActivityImpl::test()
+{
+  if (state_ != State::WAITING && state_ != State::RUNNING) {
+    finish();
+    return true;
+  }
+  return false;
+}
+
+void ActivityImpl::wait_for(actor::ActorImpl* issuer, double timeout)
+{
+  XBT_DEBUG("Wait for execution of synchro %p, state %d", this, (int)state_);
+  xbt_assert(std::isfinite(timeout), "timeout is not finite!");
+
+  /* Associate this simcall to the synchro */
+  register_simcall(&issuer->simcall);
+
+  if (MC_is_active() || MC_record_replay_is_active()) {
+    int idx = SIMCALL_GET_MC_VALUE(issuer->simcall);
+    if (idx == 0) {
+      state_ = simgrid::kernel::activity::State::DONE;
+    } else {
+      /* If we reached this point, the wait simcall must have a timeout */
+      /* Otherwise it shouldn't be enabled and executed by the MC */
+      if (timeout < 0.0)
+        THROW_IMPOSSIBLE;
+      state_ = simgrid::kernel::activity::State::TIMEOUT;
+    }
+    finish();
+    return;
+  }
+
+  /* If the synchro is already finished then perform the error handling */
+  if (state_ != simgrid::kernel::activity::State::RUNNING)
+    finish();
+  else {
+    /* we need a sleep action (even when there is no timeout) to be notified of host failures */
+    set_timeout(timeout);
+  }
 }
 
-void simgrid::kernel::activity::ActivityImpl::unref()
+void ActivityImpl::suspend()
 {
-  xbt_assert(refcount > 0,
-      "This activity has a negative refcount! You can only call test() or wait() once per activity.");
+  if (surf_action_ == nullptr)
+    return;
+  XBT_VERB("This activity is suspended (remain: %f)", surf_action_->get_remains());
+  surf_action_->suspend();
+  on_suspended(*this);
+}
 
-  refcount--;
-  if (refcount>0)
+void ActivityImpl::resume()
+{
+  if (surf_action_ == nullptr)
     return;
-  delete this;
+  XBT_VERB("This activity is resumed (remain: %f)", surf_action_->get_remains());
+  surf_action_->resume();
+  on_resumed(*this);
+}
+
+void ActivityImpl::cancel()
+{
+  XBT_VERB("Activity %p is canceled", this);
+  if (surf_action_ != nullptr)
+    surf_action_->cancel();
+  state_ = State::CANCELED;
+}
+
+// boost::intrusive_ptr<Activity> support:
+void intrusive_ptr_add_ref(simgrid::kernel::activity::ActivityImpl* activity)
+{
+  activity->refcount_.fetch_add(1, std::memory_order_relaxed);
+}
+
+void intrusive_ptr_release(simgrid::kernel::activity::ActivityImpl* activity)
+{
+  if (activity->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
+    std::atomic_thread_fence(std::memory_order_acquire);
+    delete activity;
+  }
+}
+xbt::signal<void(ActivityImpl const&)> ActivityImpl::on_resumed;
+xbt::signal<void(ActivityImpl const&)> ActivityImpl::on_suspended;
+}
 }
+} // namespace simgrid::kernel::activity::