X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/eadbe829389f23151f79257824f3164d7801bbc7..242530a43236d91a6522c6f3768776aca9f04508:/src/kernel/activity/IoImpl.cpp

diff --git a/src/kernel/activity/IoImpl.cpp b/src/kernel/activity/IoImpl.cpp
index 3bbef385a4..8125e0e595 100644
--- a/src/kernel/activity/IoImpl.cpp
+++ b/src/kernel/activity/IoImpl.cpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2007-2019. The SimGrid Team. All rights reserved.          */
+/* Copyright (c) 2007-2020. The SimGrid Team. All rights reserved.          */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
@@ -7,65 +7,98 @@
 #include "simgrid/Exception.hpp"
 #include "simgrid/kernel/resource/Action.hpp"
 #include "simgrid/s4u/Host.hpp"
+#include "src/kernel/resource/DiskImpl.hpp"
 #include "src/mc/mc_replay.hpp"
 #include "src/simix/smx_private.hpp"
 #include "src/surf/StorageImpl.hpp"
+#include "src/surf/cpu_interface.hpp"
 
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_io, simix, "Logging specific to SIMIX (io)");
 
-void simcall_HANDLER_io_wait(smx_simcall_t simcall, simgrid::kernel::activity::IoImpl* synchro)
+void simcall_HANDLER_io_wait(smx_simcall_t simcall, simgrid::kernel::activity::IoImpl* synchro, double timeout)
 {
   XBT_DEBUG("Wait for execution of synchro %p, state %d", synchro, (int)synchro->state_);
 
   /* Associate this simcall to the synchro */
-  synchro->simcalls_.push_back(simcall);
-  simcall->issuer->waiting_synchro = synchro;
+  synchro->register_simcall(simcall);
 
-  /* set surf's synchro */
   if (MC_is_active() || MC_record_replay_is_active()) {
-    synchro->state_ = SIMIX_DONE;
+    int idx = SIMCALL_GET_MC_VALUE(*simcall);
+    if (idx == 0) {
+      synchro->state_ = simgrid::kernel::activity::State::DONE;
+    } else {
+      /* If we reached this point, the wait simcall must have a timeout */
+      /* Otherwise it shouldn't be enabled and executed by the MC */
+      if (timeout < 0.0)
+        THROW_IMPOSSIBLE;
+      synchro->state_ = simgrid::kernel::activity::State::TIMEOUT;
+    }
     synchro->finish();
     return;
   }
 
   /* If the synchro is already finished then perform the error handling */
-  if (synchro->state_ != SIMIX_RUNNING)
+  if (synchro->state_ != simgrid::kernel::activity::State::RUNNING)
+    synchro->finish();
+  else {
+    /* we need a sleep action (even when there is no timeout) to be notified of host failures */
+    if (synchro->get_disk() != nullptr)
+      synchro->set_timeout_detector(synchro->get_disk()->get_host()->pimpl_cpu->sleep(timeout));
+    else
+      synchro->set_timeout_detector(
+          simgrid::s4u::Host::by_name(synchro->get_storage()->get_host())->pimpl_cpu->sleep(timeout));
+  }
+}
+
+void simcall_HANDLER_io_test(smx_simcall_t simcall, simgrid::kernel::activity::IoImpl* synchro)
+{
+  bool res = (synchro->state_ != simgrid::kernel::activity::State::WAITING &&
+              synchro->state_ != simgrid::kernel::activity::State::RUNNING);
+  if (res) {
+    synchro->simcalls_.push_back(simcall);
     synchro->finish();
+  } else {
+    simcall->issuer_->simcall_answer();
+  }
+  simcall_io_test__set__result(simcall, res);
 }
 
 namespace simgrid {
 namespace kernel {
 namespace activity {
 
-IoImplPtr IoImpl::set_name(const std::string& name)
+IoImpl& IoImpl::set_type(s4u::Io::OpType type)
 {
-  ActivityImpl::set_name(name);
-  return this;
+  type_ = type;
+  return *this;
 }
 
-IoImplPtr IoImpl::set_type(s4u::Io::OpType type)
+IoImpl& IoImpl::set_size(sg_size_t size)
 {
-  type_ = type;
-  return this;
+  size_ = size;
+  return *this;
 }
 
-IoImplPtr IoImpl::set_size(sg_size_t size)
+IoImpl& IoImpl::set_disk(resource::DiskImpl* disk)
 {
-  size_ = size;
-  return this;
+  disk_ = disk;
+  return *this;
 }
 
-IoImplPtr IoImpl::set_storage(resource::StorageImpl* storage)
+IoImpl& IoImpl::set_storage(resource::StorageImpl* storage)
 {
   storage_ = storage;
-  return this;
+  return *this;
 }
 
 IoImpl* IoImpl::start()
 {
-  state_       = SIMIX_RUNNING;
-  surf_action_ = storage_->io_start(size_, type_);
-  surf_action_->set_data(this);
+  state_ = State::RUNNING;
+  if (storage_)
+    surf_action_ = storage_->io_start(size_, type_);
+  else
+    surf_action_ = disk_->io_start(size_, type_);
+  surf_action_->set_activity(this);
 
   XBT_DEBUG("Create IO synchro %p %s", this, get_cname());
   IoImpl::on_start(*this);
@@ -73,61 +106,58 @@ IoImpl* IoImpl::start()
   return this;
 }
 
-void IoImpl::cancel()
-{
-  XBT_VERB("This exec %p is canceled", this);
-  if (surf_action_ != nullptr)
-    surf_action_->cancel();
-  state_ = SIMIX_CANCELED;
-}
-
-double IoImpl::get_remaining()
-{
-  return surf_action_ ? surf_action_->get_remains() : 0;
-}
-
 void IoImpl::post()
 {
   performed_ioops_ = surf_action_->get_cost();
-  switch (surf_action_->get_state()) {
-    case resource::Action::State::FAILED:
-      state_ = SIMIX_FAILED;
-      break;
-    case resource::Action::State::FINISHED:
-      state_ = SIMIX_DONE;
-      break;
-    default:
-      THROW_IMPOSSIBLE;
+  if (surf_action_->get_state() == resource::Action::State::FAILED) {
+    if ((storage_ && not storage_->is_on()) || (disk_ && not disk_->is_on()))
+      state_ = State::FAILED;
+    else
+      state_ = State::CANCELED;
+  } else if (surf_action_->get_state() == resource::Action::State::FINISHED) {
+    state_ = State::DONE;
+  } else if (timeout_detector_ && timeout_detector_->get_state() == resource::Action::State::FINISHED) {
+    state_ = State::TIMEOUT;
+  }
+
+  if (timeout_detector_) {
+    timeout_detector_->unref();
+    timeout_detector_ = nullptr;
   }
+
   on_completion(*this);
 
+  /* Answer all simcalls associated with the synchro */
   finish();
 }
 
 void IoImpl::finish()
 {
-  for (smx_simcall_t const& simcall : simcalls_) {
+  while (not simcalls_.empty()) {
+    const s_smx_simcall* simcall = simcalls_.front();
+    simcalls_.pop_front();
     switch (state_) {
-      case SIMIX_DONE:
+      case State::DONE:
         /* do nothing, synchro done */
         break;
-      case SIMIX_FAILED:
-        simcall->issuer->exception_ =
-            std::make_exception_ptr(simgrid::StorageFailureException(XBT_THROW_POINT, "Storage failed"));
+      case State::FAILED:
+        simcall->issuer_->context_->set_wannadie();
+        simcall->issuer_->exception_ =
+            std::make_exception_ptr(StorageFailureException(XBT_THROW_POINT, "Storage failed"));
+        break;
+      case State::CANCELED:
+        simcall->issuer_->exception_ = std::make_exception_ptr(CancelException(XBT_THROW_POINT, "I/O Canceled"));
         break;
-      case SIMIX_CANCELED:
-        simcall->issuer->exception_ =
-            std::make_exception_ptr(simgrid::CancelException(XBT_THROW_POINT, "I/O Canceled"));
+      case State::TIMEOUT:
+        XBT_DEBUG("IoImpl::finish(): execution timeouted");
+        simcall->issuer_->exception_ = std::make_exception_ptr(simgrid::TimeoutException(XBT_THROW_POINT, "Timeouted"));
         break;
       default:
         xbt_die("Internal error in IoImpl::finish(): unexpected synchro state %d", static_cast<int>(state_));
     }
 
-    simcall->issuer->waiting_synchro = nullptr;
-    if (simcall->issuer->get_host()->is_on())
-      SIMIX_simcall_answer(simcall);
-    else
-      simcall->issuer->context_->iwannadie = true;
+    simcall->issuer_->waiting_synchro = nullptr;
+    simcall->issuer_->simcall_answer();
   }
 }