src/kernel/activity/ActivityImpl.cpp

   1 /* Copyright (c) 2007-2019. The SimGrid Team. All rights reserved.          */
   2
   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. */
   5
   6 #include "src/kernel/activity/ActivityImpl.hpp"
   7
   8 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_process);
   9
  10 namespace simgrid {
  11 namespace kernel {
  12 namespace activity {
  13
  14 ActivityImpl::~ActivityImpl()
  15 {
  16   if (surf_action_) {
  17     surf_action_->unref();
  18     XBT_DEBUG("Destroy activity %p", this);
  19     surf_action_ = nullptr;
  20   }
  21 }
  22
  23 void ActivityImpl::suspend()
  24 {
  25   if (surf_action_ == nullptr)
  26     return;
  27   XBT_VERB("This activity is suspended (remain: %f)", surf_action_->get_remains());
  28   surf_action_->suspend();
  29   on_suspended(*this);
  30 }
  31
  32 void ActivityImpl::resume()
  33 {
  34   if (surf_action_ == nullptr)
  35     return;
  36   XBT_VERB("This activity is resumed (remain: %f)", surf_action_->get_remains());
  37   surf_action_->resume();
  38   on_resumed(*this);
  39 }
  40
  41 // boost::intrusive_ptr<Activity> support:
  42 void intrusive_ptr_add_ref(simgrid::kernel::activity::ActivityImpl* activity)
  43 {
  44   activity->refcount_.fetch_add(1, std::memory_order_relaxed);
  45 }
  46
  47 void intrusive_ptr_release(simgrid::kernel::activity::ActivityImpl* activity)
  48 {
  49   if (activity->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
  50     std::atomic_thread_fence(std::memory_order_acquire);
  51     delete activity;
  52   }
  53 }
  54 xbt::signal<void(ActivityImpl const&)> ActivityImpl::on_resumed;
  55 xbt::signal<void(ActivityImpl const&)> ActivityImpl::on_suspended;
  56 }
  57 }
  58 } // namespace simgrid::kernel::activity::