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   clean_action();
  17   XBT_DEBUG("Destroy activity %p", this);
  18 }
  19
  20 void ActivityImpl::clean_action()
  21 {
  22   if (surf_action_) {
  23     surf_action_->unref();
  24     surf_action_ = nullptr;
  25   }
  26 }
  27
  28 double ActivityImpl::get_remaining() const
  29 {
  30   return surf_action_ ? surf_action_->get_remains() : 0;
  31 }
  32
  33 void ActivityImpl::suspend()
  34 {
  35   if (surf_action_ == nullptr)
  36     return;
  37   XBT_VERB("This activity is suspended (remain: %f)", surf_action_->get_remains());
  38   surf_action_->suspend();
  39   on_suspended(*this);
  40 }
  41
  42 void ActivityImpl::resume()
  43 {
  44   if (surf_action_ == nullptr)
  45     return;
  46   XBT_VERB("This activity is resumed (remain: %f)", surf_action_->get_remains());
  47   surf_action_->resume();
  48   on_resumed(*this);
  49 }
  50
  51 void ActivityImpl::cancel()
  52 {
  53   XBT_VERB("Activity %p is canceled", this);
  54   if (surf_action_ != nullptr)
  55     surf_action_->cancel();
  56   state_ = SIMIX_CANCELED;
  57 }
  58
  59 // boost::intrusive_ptr<Activity> support:
  60 void intrusive_ptr_add_ref(simgrid::kernel::activity::ActivityImpl* activity)
  61 {
  62   activity->refcount_.fetch_add(1, std::memory_order_relaxed);
  63 }
  64
  65 void intrusive_ptr_release(simgrid::kernel::activity::ActivityImpl* activity)
  66 {
  67   if (activity->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
  68     std::atomic_thread_fence(std::memory_order_acquire);
  69     delete activity;
  70   }
  71 }
  72 xbt::signal<void(ActivityImpl const&)> ActivityImpl::on_resumed;
  73 xbt::signal<void(ActivityImpl const&)> ActivityImpl::on_suspended;
  74 }
  75 }
  76 } // namespace simgrid::kernel::activity::