X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/7ceba49cdf17c4b6b2531da903b0b5004d46b72a..d94f920eb99dc33e8c592e89bcbbb3a8e50fe919:/src/s4u/s4u_Io.cpp

diff --git a/src/s4u/s4u_Io.cpp b/src/s4u/s4u_Io.cpp
index bd2b722dfb..6d34be90e0 100644
--- a/src/s4u/s4u_Io.cpp
+++ b/src/s4u/s4u_Io.cpp
@@ -1,75 +1,113 @@
-/* Copyright (c) 2018-2021. The SimGrid Team. All rights reserved.          */
+/* Copyright (c) 2018-2022. 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 "simgrid/s4u/Actor.hpp"
-#include "simgrid/s4u/Disk.hpp"
-#include "simgrid/s4u/Io.hpp"
+#include <simgrid/s4u/Disk.hpp>
+#include <simgrid/s4u/Io.hpp>
+#include <xbt/log.h>
+
 #include "src/kernel/activity/IoImpl.hpp"
 #include "src/kernel/actor/ActorImpl.hpp"
-#include "xbt/log.h"
+#include "src/kernel/actor/SimcallObserver.hpp"
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(s4u_io, s4u_activity, "S4U asynchronous I/Os");
 
-namespace simgrid {
-namespace s4u {
+namespace simgrid::s4u {
 xbt::signal<void(Io const&)> Io::on_start;
-xbt::signal<void(Io const&)> Io::on_completion;
 
-Io::Io()
+Io::Io(kernel::activity::IoImplPtr pimpl)
 {
-  pimpl_ = kernel::activity::IoImplPtr(new kernel::activity::IoImpl());
+  pimpl_ = pimpl;
 }
 
 IoPtr Io::init()
 {
- return IoPtr(new Io());
+  auto pimpl = kernel::activity::IoImplPtr(new kernel::activity::IoImpl());
+  return IoPtr(static_cast<Io*>(pimpl->get_iface()));
 }
 
-Io* Io::start()
+IoPtr Io::streamto_init(Host* from, Disk* from_disk, Host* to, Disk* to_disk)
 {
-  kernel::actor::simcall(
-      [this] { (*boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)).set_name(get_name()).start(); });
+  auto res = Io::init()->set_source(from, from_disk)->set_destination(to, to_disk);
+  res->set_state(State::STARTING);
+  return res;
+}
 
-  if (suspended_)
-    pimpl_->suspend();
+IoPtr Io::streamto_async(Host* from, Disk* from_disk, Host* to, Disk* to_disk, uint64_t simulated_size_in_bytes)
+{
+  return Io::init()->set_size(simulated_size_in_bytes)->set_source(from, from_disk)->set_destination(to, to_disk);
+}
 
-  state_ = State::STARTED;
-  on_start(*this);
-  return this;
+void Io::streamto(Host* from, Disk* from_disk, Host* to, Disk* to_disk, uint64_t simulated_size_in_bytes)
+{
+  streamto_async(from, from_disk, to, to_disk, simulated_size_in_bytes)->wait();
 }
 
-Io* Io::cancel()
+IoPtr Io::set_source(Host* from, Disk* from_disk)
 {
-  kernel::actor::simcall([this] { boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->cancel(); });
-  state_ = State::CANCELED;
-  on_completion(*this);
+  xbt_assert(state_ == State::INITED || state_ == State::STARTING,
+             "Cannot change the source of an IO stream once it's started (state: %s)", to_c_str(state_));
+  kernel::actor::simcall_answered(
+      [this, from, from_disk] {
+        boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_host(from);
+        if (from_disk != nullptr)
+          boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_disk(from_disk->get_impl());
+      });
+  // Setting 'source' may allow to start the activity, let's try
+  if (state_ == State::STARTING && remains_ <= 0)
+    XBT_DEBUG("This IO has a size of 0 byte. It cannot start yet");
+  else
+    vetoable_start();
+
   return this;
 }
 
-Io* Io::wait()
+IoPtr Io::set_destination(Host* to, Disk* to_disk)
 {
-  return this->wait_for(-1);
+  xbt_assert(state_ == State::INITED || state_ == State::STARTING,
+             "Cannot change the source of an IO stream once it's started (state: %s)", to_c_str(state_));
+  kernel::actor::simcall_answered(
+      [this, to, to_disk] {
+        boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_dst_host(to);
+        if (to_disk != nullptr)
+          boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_dst_disk(to_disk->get_impl());
+      });
+  // Setting 'destination' may allow to start the activity, let's try
+  if (state_ == State::STARTING && remains_ <= 0)
+    XBT_DEBUG("This IO has a size of 0 byte. It cannot start yet");
+  else
+    vetoable_start();
+
+  return this;
 }
 
-Io* Io::wait_for(double timeout)
+Io* Io::start()
 {
-  if (state_ == State::INITED)
-    vetoable_start();
+  kernel::actor::simcall_answered(
+      [this] { (*boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)).set_name(get_name()).start(); });
 
-  kernel::actor::ActorImpl* issuer = kernel::actor::ActorImpl::self();
-  kernel::actor::simcall_blocking([this, issuer, timeout] { this->get_impl()->wait_for(issuer, timeout); });
-  state_ = State::FINISHED;
-  this->release_dependencies();
+  if (suspended_)
+    pimpl_->suspend();
 
-  on_completion(*this);
+  state_ = State::STARTED;
+  on_start(*this);
   return this;
 }
 
+ssize_t Io::wait_any_for(const std::vector<IoPtr>& ios, double timeout)
+{
+  std::vector<ActivityPtr> activities;
+  for (const auto& io : ios)
+    activities.push_back(boost::dynamic_pointer_cast<Activity>(io));
+  return Activity::wait_any_for(activities, timeout);
+}
+
 IoPtr Io::set_disk(const_sg_disk_t disk)
 {
   xbt_assert(state_ == State::INITED || state_ == State::STARTING, "Cannot set disk once the Io is started");
 
-  kernel::actor::simcall(
+  kernel::actor::simcall_answered(
       [this, disk] { boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_disk(disk->get_impl()); });
 
   // Setting the disk may allow to start the activity, let's try
@@ -79,27 +117,45 @@ IoPtr Io::set_disk(const_sg_disk_t disk)
  return this;
 }
 
+IoPtr Io::set_priority(double priority)
+{
+  xbt_assert(state_ == State::INITED || state_ == State::STARTING,
+             "Cannot change the priority of an io after its start");
+  kernel::actor::simcall_answered([this, priority] {
+    boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_sharing_penalty(1. / priority);
+  });
+  return this;
+}
+
 IoPtr Io::set_size(sg_size_t size)
 {
   xbt_assert(state_ == State::INITED || state_ == State::STARTING, "Cannot set size once the Io is started");
-  kernel::actor::simcall(
+  kernel::actor::simcall_answered(
       [this, size] { boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_size(size); });
-  Activity::set_remaining(size);
+  set_remaining(size);
   return this;
 }
 
 IoPtr Io::set_op_type(OpType type)
 {
   xbt_assert(state_ == State::INITED || state_ == State::STARTING, "Cannot set size once the Io is started");
-  kernel::actor::simcall(
+  kernel::actor::simcall_answered(
       [this, type] { boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->set_type(type); });
   return this;
 }
 
+IoPtr Io::update_priority(double priority)
+{
+  kernel::actor::simcall_answered([this, priority] {
+    boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->update_sharing_penalty(1. / priority);
+  });
+  return this;
+}
+
 /** @brief Returns the amount of flops that remain to be done */
 double Io::get_remaining() const
 {
-  return kernel::actor::simcall(
+  return kernel::actor::simcall_answered(
       [this]() { return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_remaining(); });
 }
 
@@ -110,8 +166,11 @@ sg_size_t Io::get_performed_ioops() const
 
 bool Io::is_assigned() const
 {
-  return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_disk() != nullptr;
+  if (boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_host() == nullptr) {
+    return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_disk() != nullptr;
+  } else {
+    return boost::static_pointer_cast<kernel::activity::IoImpl>(pimpl_)->get_dst_host() != nullptr;
+  }
 }
 
-} // namespace s4u
-} // namespace simgrid
+} // namespace simgrid::s4u