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 double ActivityImpl::get_remaining() const
  24 {
  25   return surf_action_ ? surf_action_->get_remains() : 0;
  26 }
  27
  28 void ActivityImpl::suspend()
  29 {
  30   if (surf_action_ == nullptr)
  31     return;
  32   XBT_VERB("This activity is suspended (remain: %f)", surf_action_->get_remains());
  33   surf_action_->suspend();
  34   on_suspended(*this);
  35 }
  36
  37 void ActivityImpl::resume()
  38 {
  39   if (surf_action_ == nullptr)
  40     return;
  41   XBT_VERB("This activity is resumed (remain: %f)", surf_action_->get_remains());
  42   surf_action_->resume();
  43   on_resumed(*this);
  44 }
  45
  46 // boost::intrusive_ptr<Activity> support:
  47 void intrusive_ptr_add_ref(simgrid::kernel::activity::ActivityImpl* activity)
  48 {
  49   activity->refcount_.fetch_add(1, std::memory_order_relaxed);
  50 }
  51
  52 void intrusive_ptr_release(simgrid::kernel::activity::ActivityImpl* activity)
  53 {
  54   if (activity->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
  55     std::atomic_thread_fence(std::memory_order_acquire);
  56     delete activity;
  57   }
  58 }
  59 xbt::signal<void(ActivityImpl const&)> ActivityImpl::on_resumed;
  60 xbt::signal<void(ActivityImpl const&)> ActivityImpl::on_suspended;
  61 }
  62 }
  63 } // namespace simgrid::kernel::activity::