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/Exception.hpp"
   9 #include "simgrid/s4u/Activity.hpp"
  10 #include "simgrid/s4u/Engine.hpp"
  11 #include "simgrid/s4u/Exec.hpp"
  12 #include "simgrid/s4u/Io.hpp"
  13 #include "src/kernel/activity/ActivityImpl.hpp"
  14 #include "src/kernel/actor/ActorImpl.hpp"
  15 #include "src/kernel/actor/SimcallObserver.hpp"
  16
  17 XBT_LOG_EXTERNAL_CATEGORY(s4u);
  18 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_activity, s4u, "S4U activities");
  19
  20 namespace simgrid {
  21 namespace s4u {
  22
  23 void Activity::wait_until(double time_limit)
  24 {
  25   double now = Engine::get_clock();
  26   if (time_limit > now)
  27     wait_for(time_limit - now);
  28 }
  29
  30 Activity* Activity::wait_for(double timeout)
  31 {
  32   if (state_ == State::INITED)
  33     vetoable_start();
  34
  35   if (state_ == State::FAILED) {
  36     if (dynamic_cast<Exec*>(this))
  37       throw HostFailureException(XBT_THROW_POINT, "Cannot wait for a failed exec");
  38     if (dynamic_cast<Io*>(this))
  39       throw StorageFailureException(XBT_THROW_POINT, "Cannot wait for a failed I/O");
  40   }
  41
  42   kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
  43   kernel::actor::ActivityWaitSimcall observer{issuer, pimpl_.get(), timeout};
  44   if (kernel::actor::simcall_blocking(
  45           [&observer] { observer.get_activity()->wait_for(observer.get_issuer(), observer.get_timeout()); }, &observer))
  46     throw TimeoutException(XBT_THROW_POINT, "Timeouted");
  47   complete(State::FINISHED);
  48   return this;
  49 }
  50
  51 bool Activity::test()
  52 {
  53   xbt_assert(state_ == State::INITED || state_ == State::STARTED || state_ == State::STARTING ||
  54              state_ == State::CANCELED || state_ == State::FINISHED);
  55
  56   if (state_ == State::CANCELED || state_ == State::FINISHED)
  57     return true;
  58
  59   if (state_ == State::INITED || state_ == State::STARTING)
  60     this->vetoable_start();
  61
  62   if (kernel::actor::simcall([this] { return this->get_impl()->test(); })) {
  63     complete(State::FINISHED);
  64     return true;
  65   }
  66
  67   return false;
  68 }
  69
  70 Activity* Activity::cancel()
  71 {
  72   kernel::actor::simcall([this] {
  73     XBT_HERE();
  74     pimpl_->cancel();
  75   });
  76   complete(State::CANCELED);
  77   return this;
  78 }
  79
  80 Activity* Activity::suspend()
  81 {
  82   if (suspended_)
  83     return this; // Already suspended
  84   suspended_ = true;
  85
  86   if (state_ == State::STARTED)
  87     pimpl_->suspend();
  88
  89   return this;
  90 }
  91
  92 Activity* Activity::resume()
  93 {
  94   if (not suspended_)
  95     return this; // nothing to restore when it's not suspended
  96
  97   if (state_ == State::STARTED)
  98     pimpl_->resume();
  99
 100   return this;
 101 }
 102
 103 const char* Activity::get_state_str() const
 104 {
 105   return to_c_str(state_);
 106 }
 107
 108 double Activity::get_remaining() const
 109 {
 110   if (state_ == State::INITED || state_ == State::STARTING)
 111     return remains_;
 112   else
 113     return pimpl_->get_remaining();
 114 }
 115
 116 Activity* Activity::set_remaining(double remains)
 117 {
 118   xbt_assert(state_ == State::INITED, "Cannot change the remaining amount of work once the Activity is started");
 119   remains_ = remains;
 120   return this;
 121 }
 122
 123 } // namespace s4u
 124 } // namespace simgrid