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 <simgrid/Exception.hpp>
   7 #include <simgrid/s4u/Activity.hpp>
   8 #include <simgrid/s4u/Engine.hpp>
   9 #include <simgrid/s4u/Exec.hpp>
  10 #include <simgrid/s4u/Io.hpp>
  11 #include <xbt/log.h>
  12
  13 #include "src/kernel/actor/ActorImpl.hpp"
  14 #include "src/kernel/actor/SimcallObserver.hpp"
  15
  16 XBT_LOG_EXTERNAL_CATEGORY(s4u);
  17 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_activity, s4u, "S4U activities");
  18
  19 namespace simgrid {
  20 namespace s4u {
  21
  22 xbt::signal<void(Activity&)> Activity::on_veto;
  23
  24 std::set<Activity*>* Activity::vetoed_activities_ = nullptr;
  25
  26 void Activity::wait_until(double time_limit)
  27 {
  28   double now = Engine::get_clock();
  29   if (time_limit > now)
  30     wait_for(time_limit - now);
  31 }
  32
  33 Activity* Activity::wait_for(double timeout)
  34 {
  35   if (state_ == State::INITED)
  36     vetoable_start();
  37
  38   if (state_ == State::FAILED) {
  39     if (dynamic_cast<Exec*>(this))
  40       throw HostFailureException(XBT_THROW_POINT, "Cannot wait for a failed exec");
  41     if (dynamic_cast<Io*>(this))
  42       throw StorageFailureException(XBT_THROW_POINT, "Cannot wait for a failed I/O");
  43   }
  44
  45   kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
  46   kernel::actor::ActivityWaitSimcall observer{issuer, pimpl_.get(), timeout};
  47   if (kernel::actor::simcall_blocking(
  48           [&observer] { observer.get_activity()->wait_for(observer.get_issuer(), observer.get_timeout()); }, &observer))
  49     throw TimeoutException(XBT_THROW_POINT, "Timeouted");
  50   complete(State::FINISHED);
  51   return this;
  52 }
  53
  54 bool Activity::test()
  55 {
  56   xbt_assert(state_ == State::INITED || state_ == State::STARTED || state_ == State::STARTING ||
  57              state_ == State::CANCELED || state_ == State::FINISHED);
  58
  59   if (state_ == State::CANCELED || state_ == State::FINISHED)
  60     return true;
  61
  62   if (state_ == State::INITED || state_ == State::STARTING)
  63     this->vetoable_start();
  64
  65   if (kernel::actor::simcall([this] { return this->get_impl()->test(); })) {
  66     complete(State::FINISHED);
  67     return true;
  68   }
  69
  70   return false;
  71 }
  72
  73 Activity* Activity::cancel()
  74 {
  75   kernel::actor::simcall([this] {
  76     XBT_HERE();
  77     pimpl_->cancel();
  78   });
  79   complete(State::CANCELED);
  80   return this;
  81 }
  82
  83 Activity* Activity::suspend()
  84 {
  85   if (suspended_)
  86     return this; // Already suspended
  87   suspended_ = true;
  88
  89   if (state_ == State::STARTED)
  90     pimpl_->suspend();
  91
  92   return this;
  93 }
  94
  95 Activity* Activity::resume()
  96 {
  97   if (not suspended_)
  98     return this; // nothing to restore when it's not suspended
  99
 100   if (state_ == State::STARTED)
 101     pimpl_->resume();
 102
 103   return this;
 104 }
 105
 106 const char* Activity::get_state_str() const
 107 {
 108   return to_c_str(state_);
 109 }
 110
 111 double Activity::get_remaining() const
 112 {
 113   if (state_ == State::INITED || state_ == State::STARTING)
 114     return remains_;
 115   else
 116     return pimpl_->get_remaining();
 117 }
 118
 119 Activity* Activity::set_remaining(double remains)
 120 {
 121   xbt_assert(state_ == State::INITED || state_ == State::STARTING,
 122              "Cannot change the remaining amount of work once the Activity is started");
 123   remains_ = remains;
 124   return this;
 125 }
 126
 127 } // namespace s4u
 128 } // namespace simgrid