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 XBT_LOG_EXTERNAL_CATEGORY(s4u);
  13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_activity, s4u, "S4U activities");
  14
  15 namespace simgrid {
  16 namespace s4u {
  17
  18 void Activity::wait_until(double time_limit)
  19 {
  20   double now = Engine::get_clock();
  21   if (time_limit > now)
  22     wait_for(time_limit - now);
  23 }
  24
  25 bool Activity::test()
  26 {
  27   xbt_assert(state_ == State::INITED || state_ == State::STARTED || state_ == State::STARTING ||
  28              state_ == State::CANCELED || state_ == State::FINISHED);
  29
  30   if (state_ == State::CANCELED || state_ == State::FINISHED)
  31     return true;
  32
  33   if (state_ == State::INITED || state_ == State::STARTING)
  34     this->vetoable_start();
  35
  36   if (kernel::actor::simcall([this] { return this->get_impl()->test(); })) {
  37     state_ = State::FINISHED;
  38     this->release_dependencies();
  39     return true;
  40   }
  41
  42   return false;
  43 }
  44
  45 Activity* Activity::suspend()
  46 {
  47   if (suspended_)
  48     return this; // Already suspended
  49   suspended_ = true;
  50
  51   if (state_ == State::STARTED)
  52     pimpl_->suspend();
  53
  54   return this;
  55 }
  56
  57 Activity* Activity::resume()
  58 {
  59   if (not suspended_)
  60     return this; // nothing to restore when it's not suspended
  61
  62   if (state_ == State::STARTED)
  63     pimpl_->resume();
  64
  65   return this;
  66 }
  67
  68 const char* Activity::get_state_str() const
  69 {
  70   switch (state_) {
  71     case State::INITED:
  72       return "INITED";
  73
  74     case State::STARTING:
  75       return "STARTING";
  76
  77     case State::STARTED:
  78       return "STARTED";
  79
  80     case State::CANCELED:
  81       return "CANCELED";
  82
  83     case State::FINISHED:
  84       return "FINISHED";
  85   }
  86   THROW_IMPOSSIBLE;
  87 }
  88
  89 double Activity::get_remaining() const
  90 {
  91   if (state_ == State::INITED || state_ == State::STARTING)
  92     return remains_;
  93   else
  94     return pimpl_->get_remaining();
  95 }
  96
  97 Activity* Activity::set_remaining(double remains)
  98 {
  99   xbt_assert(state_ == State::INITED, "Cannot change the remaining amount of work once the Activity is started");
 100   remains_ = remains;
 101   return this;
 102 }
 103
 104 } // namespace s4u
 105 } // namespace simgrid