src/s4u/s4u_Activity.cpp

   1 /* Copyright (c) 2006-2021. 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 "xbt/log.h"
   7
   8 #include "simgrid/s4u/Activity.hpp"
   9 #include "simgrid/s4u/Engine.hpp"
  10 #include "src/kernel/activity/ActivityImpl.hpp"
  11
  12 #include <array>
  13
  14 XBT_LOG_EXTERNAL_CATEGORY(s4u);
  15 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_activity, s4u, "S4U activities");
  16
  17 namespace simgrid {
  18 namespace s4u {
  19
  20 void Activity::wait_until(double time_limit)
  21 {
  22   double now = Engine::get_clock();
  23   if (time_limit > now)
  24     wait_for(time_limit - now);
  25 }
  26
  27 bool Activity::test()
  28 {
  29   xbt_assert(state_ == State::INITED || state_ == State::STARTED || state_ == State::STARTING ||
  30              state_ == State::CANCELED || state_ == State::FINISHED);
  31
  32   if (state_ == State::CANCELED || state_ == State::FINISHED)
  33     return true;
  34
  35   if (state_ == State::INITED || state_ == State::STARTING)
  36     this->vetoable_start();
  37
  38   if (kernel::actor::simcall([this] { return this->get_impl()->test(); })) {
  39     state_ = State::FINISHED;
  40     this->release_dependencies();
  41     return true;
  42   }
  43
  44   return false;
  45 }
  46
  47 Activity* Activity::suspend()
  48 {
  49   if (suspended_)
  50     return this; // Already suspended
  51   suspended_ = true;
  52
  53   if (state_ == State::STARTED)
  54     pimpl_->suspend();
  55
  56   return this;
  57 }
  58
  59 Activity* Activity::resume()
  60 {
  61   if (not suspended_)
  62     return this; // nothing to restore when it's not suspended
  63
  64   if (state_ == State::STARTED)
  65     pimpl_->resume();
  66
  67   return this;
  68 }
  69
  70 const char* Activity::get_state_str() const
  71 {
  72   constexpr std::array<const char*, 5> names{{"INITED", "STARTING", "STARTED", "CANCELED", "FINISHED"}};
  73   return names[static_cast<int>(state_)];
  74 }
  75
  76 double Activity::get_remaining() const
  77 {
  78   if (state_ == State::INITED || state_ == State::STARTING)
  79     return remains_;
  80   else
  81     return pimpl_->get_remaining();
  82 }
  83
  84 Activity* Activity::set_remaining(double remains)
  85 {
  86   xbt_assert(state_ == State::INITED, "Cannot change the remaining amount of work once the Activity is started");
  87   remains_ = remains;
  88   return this;
  89 }
  90
  91 } // namespace s4u
  92 } // namespace simgrid