X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/939476f1fc7630eb237535b07ed0deef77ce1b24..19aa33ec87e87e1ed8f4742cc4dd60aedb837892:/src/kernel/activity/IoImpl.cpp

diff --git a/src/kernel/activity/IoImpl.cpp b/src/kernel/activity/IoImpl.cpp
index fd99cca2e7..80fd2f0654 100644
--- a/src/kernel/activity/IoImpl.cpp
+++ b/src/kernel/activity/IoImpl.cpp
@@ -1,72 +1,119 @@
-/* Copyright (c) 2007-2018. 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 "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, resource::Action* surf_action, s4u::Storage* storage)
-    : ActivityImpl(name), storage_(storage), surf_action_(surf_action)
-{
-  this->state_ = SIMIX_RUNNING;
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_io, simix, "Logging specific to SIMIX (io)");
 
-  surf_action_->set_data(this);
+namespace simgrid {
+namespace kernel {
+namespace activity {
 
-  XBT_DEBUG("Create exec %p", this);
+IoImpl& IoImpl::set_timeout(double timeout)
+{
+  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::cancel()
+IoImpl& IoImpl::set_type(s4u::Io::OpType type)
 {
-  XBT_VERB("This exec %p is canceled", this);
-  if (surf_action_ != nullptr)
-    surf_action_->cancel();
+  type_ = type;
+  return *this;
 }
 
-void simgrid::kernel::activity::IoImpl::suspend()
+IoImpl& IoImpl::set_size(sg_size_t size)
 {
-  if (surf_action_ != nullptr)
-    surf_action_->suspend();
+  size_ = size;
+  return *this;
 }
 
-void simgrid::kernel::activity::IoImpl::resume()
+IoImpl& IoImpl::set_disk(resource::DiskImpl* disk)
 {
-  if (surf_action_ != nullptr)
-    surf_action_->resume();
+  disk_ = disk;
+  return *this;
 }
 
-double simgrid::kernel::activity::IoImpl::get_remaining()
+IoImpl* IoImpl::start()
 {
-  return surf_action_ ? surf_action_->get_remains() : 0;
+  state_ = State::RUNNING;
+  surf_action_ = disk_->io_start(size_, type_);
+  surf_action_->set_activity(this);
+
+  XBT_DEBUG("Create IO synchro %p %s", this, get_cname());
+
+  return this;
 }
 
-void simgrid::kernel::activity::IoImpl::post()
+void IoImpl::post()
 {
-  for (smx_simcall_t const& simcall : simcalls_) {
-    switch (simcall->call) {
-      case SIMCALL_STORAGE_WRITE:
-        simcall_storage_write__set__result(simcall, surf_action_->get_cost());
+  performed_ioops_ = surf_action_->get_cost();
+  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;
+  }
+
+  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 SIMCALL_STORAGE_READ:
-        simcall_storage_read__set__result(simcall, surf_action_->get_cost());
+      case State::FAILED:
+        simcall->issuer_->context_->set_wannadie();
+        simcall->issuer_->exception_ =
+            std::make_exception_ptr(StorageFailureException(XBT_THROW_POINT, "Storage failed"));
         break;
-      default:
+      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_));
     }
-  }
 
-  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;
+    simcall->issuer_->waiting_synchro_ = nullptr;
+    simcall->issuer_->simcall_answer();
   }
-
-  SIMIX_io_finish(this);
 }
+
+} // namespace activity
+} // namespace kernel
+} // namespace simgrid