src/kernel/activity/ExecImpl.cpp

   1 /* Copyright (c) 2007-2018. 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/modelchecker.h"
   7 #include "src/mc/mc_replay.hpp"
   8
   9 #include "src/kernel/activity/ExecImpl.hpp"
  10 #include "src/simix/smx_host_private.hpp"
  11 #include "src/surf/surf_interface.hpp"
  12 #include "src/surf/cpu_interface.hpp"
  13
  14 #include "simgrid/s4u/Host.hpp"
  15
  16 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_process);
  17
  18 simgrid::kernel::activity::ExecImpl::ExecImpl(std::string name, resource::Action* surf_action,
  19                                               resource::Action* timeout_detector, s4u::Host* host)
  20     : ActivityImpl(name), host_(host), surf_action_(surf_action), timeout_detector_(timeout_detector)
  21 {
  22   this->state_ = SIMIX_RUNNING;
  23
  24   surf_action_->set_data(this);
  25   if (timeout_detector != nullptr)
  26     timeout_detector->set_data(this);
  27
  28   XBT_DEBUG("Create exec %p", this);
  29 }
  30
  31 simgrid::kernel::activity::ExecImpl::~ExecImpl()
  32 {
  33   if (surf_action_)
  34     surf_action_->unref();
  35   if (timeout_detector_)
  36     timeout_detector_->unref();
  37   XBT_DEBUG("Destroy exec %p", this);
  38 }
  39
  40 void simgrid::kernel::activity::ExecImpl::suspend()
  41 {
  42   XBT_VERB("This exec is suspended (remain: %f)", surf_action_->get_remains());
  43   if (surf_action_ != nullptr)
  44     surf_action_->suspend();
  45 }
  46
  47 void simgrid::kernel::activity::ExecImpl::resume()
  48 {
  49   XBT_VERB("This exec is resumed (remain: %f)", surf_action_->get_remains());
  50   if (surf_action_ != nullptr)
  51     surf_action_->resume();
  52 }
  53 void simgrid::kernel::activity::ExecImpl::cancel()
  54 {
  55   XBT_VERB("This exec %p is canceled", this);
  56   if (surf_action_ != nullptr)
  57     surf_action_->cancel();
  58 }
  59
  60 double simgrid::kernel::activity::ExecImpl::get_remaining()
  61 {
  62   xbt_assert(host_ != nullptr, "Calling remains() on a parallel execution is not allowed. "
  63                                "We would need to return a vector instead of a scalar. "
  64                                "Did you mean remainingRatio() instead?");
  65
  66   return surf_action_ ? surf_action_->get_remains() : 0;
  67 }
  68
  69 double simgrid::kernel::activity::ExecImpl::get_remaining_ratio()
  70 {
  71   if (host_ ==
  72       nullptr) // parallel task: their remain is already between 0 and 1 (see comment in ExecImpl::get_remaining())
  73     return (surf_action_ == nullptr) ? 0 : surf_action_->get_remains();
  74   else // Actually compute the ratio for sequential tasks
  75     return (surf_action_ == nullptr) ? 0 : surf_action_->get_remains() / surf_action_->get_cost();
  76 }
  77
  78 void simgrid::kernel::activity::ExecImpl::set_bound(double bound)
  79 {
  80   if (surf_action_)
  81     surf_action_->set_bound(bound);
  82 }
  83 void simgrid::kernel::activity::ExecImpl::set_priority(double priority)
  84 {
  85   if (surf_action_)
  86     surf_action_->set_priority(priority);
  87 }
  88
  89 void simgrid::kernel::activity::ExecImpl::set_category(std::string category)
  90 {
  91   if (surf_action_)
  92     surf_action_->set_category(category);
  93 }
  94
  95 void simgrid::kernel::activity::ExecImpl::post()
  96 {
  97   if (host_ && host_->is_off()) { /* FIXME: handle resource failure for parallel tasks too */
  98     /* If the host running the synchro failed, notice it. This way, the asking
  99      * process can be killed if it runs on that host itself */
 100     state_ = SIMIX_FAILED;
 101   } else if (surf_action_ && surf_action_->get_state() == simgrid::kernel::resource::Action::State::FAILED) {
 102     /* If the host running the synchro didn't fail, then the synchro was canceled */
 103     state_ = SIMIX_CANCELED;
 104   } else if (timeout_detector_ &&
 105              timeout_detector_->get_state() == simgrid::kernel::resource::Action::State::FINISHED) {
 106     state_ = SIMIX_TIMEOUT;
 107   } else {
 108     state_ = SIMIX_DONE;
 109   }
 110
 111   on_completion(this);
 112
 113   if (surf_action_) {
 114     surf_action_->unref();
 115     surf_action_ = nullptr;
 116   }
 117   if (timeout_detector_) {
 118     timeout_detector_->unref();
 119     timeout_detector_ = nullptr;
 120   }
 121
 122   /* If there are simcalls associated with the synchro, then answer them */
 123   if (not simcalls_.empty())
 124     SIMIX_execution_finish(this);
 125 }
 126
 127 simgrid::kernel::activity::ActivityImpl*
 128 simgrid::kernel::activity::ExecImpl::migrate(simgrid::s4u::Host* to)
 129 {
 130
 131   if (not MC_is_active() && not MC_record_replay_is_active()) {
 132     simgrid::kernel::resource::Action* old_action = this->surf_action_;
 133     simgrid::kernel::resource::Action* new_action = to->pimpl_cpu->execution_start(old_action->get_cost());
 134     new_action->set_remains(old_action->get_remains());
 135     new_action->set_data(this);
 136     new_action->set_priority(old_action->get_priority());
 137
 138     // FIXME: the user-defined bound seem to not be kept by LMM, that seem to overwrite it for the multi-core modeling.
 139     // I hope that the user did not provide any.
 140
 141     old_action->set_data(nullptr);
 142     old_action->cancel();
 143     old_action->unref();
 144     this->surf_action_ = new_action;
 145   }
 146
 147   on_migration(this, to);
 148   return this;
 149 }
 150
 151 /*************
 152  * Callbacks *
 153  *************/
 154 simgrid::xbt::signal<void(simgrid::kernel::activity::ExecImplPtr)> simgrid::kernel::activity::ExecImpl::on_creation;
 155 simgrid::xbt::signal<void(simgrid::kernel::activity::ExecImplPtr)> simgrid::kernel::activity::ExecImpl::on_completion;
 156 simgrid::xbt::signal<void(simgrid::kernel::activity::ExecImplPtr, simgrid::s4u::Host*)>
 157     simgrid::kernel::activity::ExecImpl::on_migration;