src/s4u/s4u_Activity.cpp

   1 /* Copyright (c) 2006-2022. 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/Comm.hpp>
   9 #include <simgrid/s4u/Engine.hpp>
  10 #include <simgrid/s4u/Exec.hpp>
  11 #include <simgrid/s4u/Io.hpp>
  12 #include <xbt/log.h>
  13
  14 #include "src/kernel/activity/ActivityImpl.hpp"
  15 #include "src/kernel/actor/ActorImpl.hpp"
  16 #include "src/kernel/actor/CommObserver.hpp"
  17
  18 XBT_LOG_EXTERNAL_CATEGORY(s4u);
  19 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_activity, s4u, "S4U activities");
  20
  21 namespace simgrid {
  22
  23 template class xbt::Extendable<s4u::Activity>;
  24
  25 namespace s4u {
  26
  27 xbt::signal<void(Activity&)> Activity::on_veto;
  28 xbt::signal<void(Activity&)> Activity::on_completion;
  29
  30 std::set<Activity*>* Activity::vetoed_activities_ = nullptr;
  31
  32 void Activity::destroy()
  33 {
  34   /* First Remove all dependencies */
  35   while (not dependencies_.empty())
  36     (*(dependencies_.begin()))->remove_successor(this);
  37   while (not successors_.empty())
  38     this->remove_successor(successors_.front());
  39
  40   cancel();
  41 }
  42
  43 void Activity::wait_until(double time_limit)
  44 {
  45   double now = Engine::get_clock();
  46   if (time_limit > now)
  47     wait_for(time_limit - now);
  48 }
  49
  50 Activity* Activity::wait_for(double timeout)
  51 {
  52   if (state_ == State::INITED)
  53     vetoable_start();
  54
  55   if (state_ == State::FAILED) {
  56     if (dynamic_cast<Comm*>(this))
  57       throw NetworkFailureException(XBT_THROW_POINT, "Cannot wait for a failed comm");
  58     if (dynamic_cast<Exec*>(this))
  59       throw HostFailureException(XBT_THROW_POINT, "Cannot wait for a failed exec");
  60     if (dynamic_cast<Io*>(this))
  61       throw StorageFailureException(XBT_THROW_POINT, "Cannot wait for a failed I/O");
  62     THROW_IMPOSSIBLE;
  63   }
  64
  65   kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
  66   kernel::actor::ActivityWaitSimcall observer{issuer, pimpl_.get(), timeout};
  67   if (kernel::actor::simcall_blocking(
  68           [&observer] { observer.get_activity()->wait_for(observer.get_issuer(), observer.get_timeout()); }, &observer))
  69     throw TimeoutException(XBT_THROW_POINT, "Timeouted");
  70   complete(State::FINISHED);
  71   return this;
  72 }
  73
  74 bool Activity::test()
  75 {
  76   xbt_assert(state_ == State::INITED || state_ == State::STARTED || state_ == State::STARTING ||
  77              state_ == State::CANCELED || state_ == State::FINISHED);
  78
  79   if (state_ == State::CANCELED || state_ == State::FINISHED)
  80     return true;
  81
  82   if (state_ == State::INITED || state_ == State::STARTING)
  83     this->vetoable_start();
  84
  85   kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
  86   kernel::actor::ActivityTestSimcall observer{issuer, pimpl_.get()};
  87   if (kernel::actor::simcall([&observer] { return observer.get_activity()->test(observer.get_issuer()); }, &observer)) {
  88     complete(State::FINISHED);
  89     return true;
  90   }
  91   return false;
  92 }
  93
  94 ssize_t Activity::test_any(const std::vector<ActivityPtr>& activities)
  95 {
  96   std::vector<kernel::activity::ActivityImpl*> ractivities(activities.size());
  97   std::transform(begin(activities), end(activities), begin(ractivities),
  98                  [](const ActivityPtr& act) { return act->pimpl_.get(); });
  99
 100   kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
 101   kernel::actor::ActivityTestanySimcall observer{issuer, ractivities};
 102   ssize_t changed_pos = kernel::actor::simcall(
 103       [&observer] {
 104         return kernel::activity::ActivityImpl::test_any(observer.get_issuer(), observer.get_activities());
 105       },
 106       &observer);
 107   if (changed_pos != -1)
 108     activities.at(changed_pos)->complete(State::FINISHED);
 109   return changed_pos;
 110 }
 111
 112 ssize_t Activity::wait_any_for(const std::vector<ActivityPtr>& activities, double timeout)
 113 {
 114   std::vector<kernel::activity::ActivityImpl*> ractivities(activities.size());
 115   std::transform(begin(activities), end(activities), begin(ractivities),
 116                  [](const ActivityPtr& activity) { return activity->pimpl_.get(); });
 117
 118   kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
 119   kernel::actor::ActivityWaitanySimcall observer{issuer, ractivities, timeout};
 120   ssize_t changed_pos = kernel::actor::simcall_blocking(
 121       [&observer] {
 122         kernel::activity::ActivityImpl::wait_any_for(observer.get_issuer(), observer.get_activities(),
 123                                                      observer.get_timeout());
 124       },
 125       &observer);
 126   if (changed_pos != -1)
 127     activities.at(changed_pos)->complete(State::FINISHED);
 128   return changed_pos;
 129 }
 130
 131 Activity* Activity::cancel()
 132 {
 133   kernel::actor::simcall([this] {
 134     XBT_HERE();
 135     if (pimpl_)
 136       pimpl_->cancel();
 137   });
 138   complete(State::CANCELED);
 139   return this;
 140 }
 141
 142 Activity* Activity::suspend()
 143 {
 144   if (suspended_)
 145     return this; // Already suspended
 146   suspended_ = true;
 147
 148   if (state_ == State::STARTED)
 149     pimpl_->suspend();
 150
 151   return this;
 152 }
 153
 154 Activity* Activity::resume()
 155 {
 156   if (not suspended_)
 157     return this; // nothing to restore when it's not suspended
 158
 159   if (state_ == State::STARTED)
 160     pimpl_->resume();
 161
 162   return this;
 163 }
 164
 165 const char* Activity::get_state_str() const
 166 {
 167   return to_c_str(state_);
 168 }
 169
 170 double Activity::get_remaining() const
 171 {
 172   if (state_ == State::INITED || state_ == State::STARTING)
 173     return remains_;
 174   else
 175     return pimpl_->get_remaining();
 176 }
 177 double Activity::get_start_time() const
 178 {
 179   return pimpl_->get_start_time();
 180 }
 181 double Activity::get_finish_time() const
 182 {
 183   return pimpl_->get_finish_time();
 184 }
 185
 186 Activity* Activity::set_remaining(double remains)
 187 {
 188   xbt_assert(state_ == State::INITED || state_ == State::STARTING,
 189              "Cannot change the remaining amount of work once the Activity is started");
 190   remains_ = remains;
 191   return this;
 192 }
 193
 194 } // namespace s4u
 195 } // namespace simgrid