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