X-Git-Url: http://bilbo.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/bbc57f5380f908b965ad6b3e0b47d374b739a526..42ec07cc0c4fb24df86b22c97bfbeab2f0a21c8e:/src/kernel/activity/IoImpl.cpp

diff --git a/src/kernel/activity/IoImpl.cpp b/src/kernel/activity/IoImpl.cpp
index 8f3071983c..80fd2f0654 100644
--- a/src/kernel/activity/IoImpl.cpp
+++ b/src/kernel/activity/IoImpl.cpp
@@ -1,83 +1,119 @@
-/* Copyright (c) 2007-2019. The SimGrid Team. All rights reserved.          */
+/* Copyright (c) 2007-2021. 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. */
-
 #include "src/kernel/activity/IoImpl.hpp"
+#include "mc/mc.h"
+#include "simgrid/Exception.hpp"
 #include "simgrid/kernel/resource/Action.hpp"
-#include "src/simix/smx_io_private.hpp"
-#include "src/surf/StorageImpl.hpp"
-
-XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(simix_io);
+#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/cpu_interface.hpp"
 
-simgrid::kernel::activity::IoImpl::IoImpl(std::string name, simgrid::surf::StorageImpl* storage)
-    : ActivityImpl(name), storage_(storage)
-{
-  this->state_ = SIMIX_RUNNING;
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_io, simix, "Logging specific to SIMIX (io)");
 
-  XBT_DEBUG("Create io impl %p", this);
-}
+namespace simgrid {
+namespace kernel {
+namespace activity {
 
-simgrid::kernel::activity::IoImpl::~IoImpl()
+IoImpl& IoImpl::set_timeout(double timeout)
 {
-  if (surf_action_ != nullptr)
-    surf_action_->unref();
-  XBT_DEBUG("Destroy io %p", this);
+  const s4u::Host* host = get_disk()->get_host();
+  timeout_detector_ = host->pimpl_cpu->sleep(timeout);
+  timeout_detector_->set_activity(this);
+  return *this;
 }
 
-void simgrid::kernel::activity::IoImpl::start(sg_size_t size, simgrid::s4u::Io::OpType type)
+IoImpl& IoImpl::set_type(s4u::Io::OpType type)
 {
-  surf_action_ = storage_->io_start(size, type);
-  surf_action_->set_data(this);
-
-  XBT_DEBUG("Create IO synchro %p %s", this, name_.c_str());
-  simgrid::kernel::activity::IoImpl::on_start(this);
+  type_ = type;
+  return *this;
 }
 
-void simgrid::kernel::activity::IoImpl::cancel()
+IoImpl& IoImpl::set_size(sg_size_t size)
 {
-  XBT_VERB("This exec %p is canceled", this);
-  if (surf_action_ != nullptr)
-    surf_action_->cancel();
+  size_ = size;
+  return *this;
 }
 
-void simgrid::kernel::activity::IoImpl::suspend()
+IoImpl& IoImpl::set_disk(resource::DiskImpl* disk)
 {
-  if (surf_action_ != nullptr)
-    surf_action_->suspend();
+  disk_ = disk;
+  return *this;
 }
 
-void simgrid::kernel::activity::IoImpl::resume()
+IoImpl* IoImpl::start()
 {
-  if (surf_action_ != nullptr)
-    surf_action_->resume();
-}
+  state_ = State::RUNNING;
+  surf_action_ = disk_->io_start(size_, type_);
+  surf_action_->set_activity(this);
 
-double simgrid::kernel::activity::IoImpl::get_remaining()
-{
-  return surf_action_ ? surf_action_->get_remains() : 0;
+  XBT_DEBUG("Create IO synchro %p %s", this, get_cname());
+
+  return this;
 }
 
-void simgrid::kernel::activity::IoImpl::post()
+void IoImpl::post()
 {
   performed_ioops_ = surf_action_->get_cost();
-  switch (surf_action_->get_state()) {
-    case simgrid::kernel::resource::Action::State::FAILED:
-      state_ = SIMIX_FAILED;
-      break;
-    case simgrid::kernel::resource::Action::State::FINISHED:
-      state_ = SIMIX_DONE;
-      break;
-    default:
-      THROW_IMPOSSIBLE;
-      break;
+  if (surf_action_->get_state() == resource::Action::State::FAILED) {
+    if (disk_ && not disk_->is_on())
+      state_ = State::FAILED;
+    else
+      state_ = State::CANCELED;
+  } else if (timeout_detector_ && timeout_detector_->get_state() == resource::Action::State::FINISHED) {
+    if (surf_action_->get_remains() > 0.0) {
+      surf_action_->set_state(resource::Action::State::FAILED);
+      state_ = State::TIMEOUT;
+    } else {
+      state_ = State::DONE;
+    }
+  } else {
+    state_ = State::DONE;
   }
-  on_completion(this);
 
-  SIMIX_io_finish(this);
+  clean_action();
+  if (timeout_detector_) {
+    timeout_detector_->unref();
+    timeout_detector_ = nullptr;
+  }
+
+  /* Answer all simcalls associated with the synchro */
+  finish();
+}
+
+void IoImpl::finish()
+{
+  while (not simcalls_.empty()) {
+    const s_smx_simcall* simcall = simcalls_.front();
+    simcalls_.pop_front();
+    switch (state_) {
+      case State::DONE:
+        /* do nothing, synchro done */
+        break;
+      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 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;
+    simcall->issuer_->simcall_answer();
+  }
 }
-/*************
- * Callbacks *
- *************/
-simgrid::xbt::signal<void(simgrid::kernel::activity::IoImplPtr)> simgrid::kernel::activity::IoImpl::on_start;
-simgrid::xbt::signal<void(simgrid::kernel::activity::IoImplPtr)> simgrid::kernel::activity::IoImpl::on_completion;
+
+} // namespace activity
+} // namespace kernel
+} // namespace simgrid