-/* Copyright (c) 2013-2016. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2013-2022. 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 "src/plugins/vm/VirtualMachineImpl.hpp"
-#include "src/surf/FileImpl.hpp"
-#include <string>
+#include <simgrid/kernel/routing/NetPoint.hpp>
+#include <simgrid/s4u/Engine.hpp>
+#include <simgrid/s4u/Host.hpp>
+
+#include "src/kernel/EngineImpl.hpp"
+#include "src/kernel/resource/VirtualMachineImpl.hpp"
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_host, surf, "Logging specific to the SURF host module");
+#include <string>
-simgrid::surf::HostModel *surf_host_model = nullptr;
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(res_host, ker_resource, "Host resources agregate CPU, networking and I/O features");
/*************
- * Callbacks *
+ * Callbacks *t
*************/
namespace simgrid {
-namespace surf {
+namespace kernel {
+namespace resource {
/*********
* Model *
*********/
+/************
+ * Resource *
+ ************/
+HostImpl::HostImpl(const std::string& name) : piface_(this), name_(name)
+{
+ xbt_assert(s4u::Host::by_name_or_null(name_) == nullptr, "Refusing to create a second host named '%s'.", get_cname());
+}
-/* Each VM has a dummy CPU action on the PM layer. This CPU action works as the
- * constraint (capacity) of the VM in the PM layer. If the VM does not have any
- * active task, the dummy CPU action must be deactivated, so that the VM does
- * not get any CPU share in the PM layer. */
-void HostModel::ignoreEmptyVmInPmLMM()
-{
- /* iterate for all virtual machines */
- for (s4u::VirtualMachine* ws_vm : vm::VirtualMachineImpl::allVms_) {
- Cpu* cpu = ws_vm->pimpl_cpu;
- int active_tasks = lmm_constraint_get_variable_amount(cpu->constraint());
-
- /* The impact of the VM over its PM is the min between its vCPU amount and the amount of tasks it contains */
- int impact = std::min(active_tasks, ws_vm->pimpl_vm_->coreAmount());
-
- XBT_DEBUG("set the weight of the dummy CPU action of VM%p on PM to %d (#tasks: %d)", ws_vm, impact, active_tasks);
- if (impact > 0)
- ws_vm->pimpl_vm_->action_->setSharingWeight(1. / impact);
- else
- ws_vm->pimpl_vm_->action_->setSharingWeight(0.);
+HostImpl::~HostImpl()
+{
+ /* All actors should be gone when the host is turned off (by the end of the simulation). */
+ if (not actor_list_.empty()) {
+ const char* msg = "Shutting down host, but it's not empty";
+ try {
+ std::string actors;
+ for (auto const& actor : actor_list_)
+ actors += "\n\t" + std::string(actor.get_name());
+
+ EngineImpl::get_instance()->display_all_actor_status();
+ xbt_die("%s:%s", msg, actors.c_str());
+ } catch (const std::bad_alloc& ba) {
+ xbt_die("%s (cannot print actor list: %s)", msg, ba.what());
+ }
}
+ for (auto const& arg : actors_at_boot_)
+ delete arg;
+ actors_at_boot_.clear();
+
+ for (auto const& [_, d] : disks_)
+ d->destroy();
+
+ for (auto const& [_, vm] : vms_)
+ vm->vm_destroy();
}
-/* Helper function for executeParallelTask */
-static inline double has_cost(double* array, int pos)
+/** @brief Fire the required callbacks and destroy the object
+ *
+ * Don't delete directly a Host, call h->destroy() instead.
+ */
+void HostImpl::destroy()
{
- if (array)
- return array[pos];
- else
- return -1.0;
+ s4u::Host::on_destruction(*this->get_iface());
+ delete this;
}
-Action* HostModel::executeParallelTask(int host_nb, simgrid::s4u::Host** host_list, double* flops_amount,
- double* bytes_amount, double rate)
+/** Re-starts all the actors that are marked as restartable.
+ *
+ * Weird things will happen if you turn on a host that is already on. S4U is fool-proof, not this.
+ */
+void HostImpl::turn_on() const
{
- Action* action = nullptr;
- if ((host_nb == 1) && (has_cost(bytes_amount, 0) <= 0)) {
- action = host_list[0]->pimpl_cpu->execution_start(flops_amount[0]);
- } else if ((host_nb == 1) && (has_cost(flops_amount, 0) <= 0)) {
- action = surf_network_model->communicate(host_list[0], host_list[0], bytes_amount[0], rate);
- } else if ((host_nb == 2) && (has_cost(flops_amount, 0) <= 0) && (has_cost(flops_amount, 1) <= 0)) {
- int nb = 0;
- double value = 0.0;
+ for (auto const& arg : actors_at_boot_) {
+ XBT_DEBUG("Booting Actor %s(%s) right now", arg->name.c_str(), arg->host->get_cname());
+ actor::ActorImplPtr actor = actor::ActorImpl::create(arg);
+ }
+}
- for (int i = 0; i < host_nb * host_nb; i++) {
- if (has_cost(bytes_amount, i) > 0.0) {
- nb++;
- value = has_cost(bytes_amount, i);
+/** Kill all actors hosted here */
+void HostImpl::turn_off(const actor::ActorImpl* issuer)
+{
+ /* turn_off VMs running on host */
+ for (const auto& [_, vm] : vms_) {
+ // call s4u functions to generate the good on_state_change signal, maybe one day this wont be necessary
+ vm->get_iface()->shutdown();
+ vm->get_iface()->turn_off();
+ }
+ for (auto& actor : actor_list_) {
+ XBT_DEBUG("Killing Actor %s@%s on behalf of %s which turned off that host.", actor.get_cname(),
+ actor.get_host()->get_cname(), issuer->get_cname());
+ issuer->kill(&actor);
+ }
+ for (const auto& activity : EngineImpl::get_instance()->get_maestro()->activities_) {
+ auto* exec = dynamic_cast<activity::ExecImpl*>(activity.get());
+ if (exec != nullptr) {
+ auto hosts = exec->get_hosts();
+ if (std::find(hosts.begin(), hosts.end(), &piface_) != hosts.end()) {
+ exec->cancel();
+ exec->set_state(activity::State::FAILED);
}
}
- if (nb == 1) {
- action = surf_network_model->communicate(host_list[0], host_list[1], value, rate);
- } else if (nb == 0) {
- xbt_die("Cannot have a communication with no flop to exchange in this model. You should consider using the "
- "ptask model");
- } else {
- xbt_die("Cannot have a communication that is not a simple point-to-point in this model. You should consider "
- "using the ptask model");
- }
- } else
- xbt_die(
- "This model only accepts one of the following. You should consider using the ptask model for the other cases.\n"
- " - execution with one host only and no communication\n"
- " - Self-comms with one host only\n"
- " - Communications with two hosts and no computation");
- xbt_free(host_list);
- return action;
+ }
+ // When a host is turned off, we want to keep only the actors that should restart for when it will boot again.
+ // Then get rid of the others.
+ auto elm = remove_if(begin(actors_at_boot_), end(actors_at_boot_), [](const actor::ProcessArg* arg) {
+ if (arg->auto_restart)
+ return false;
+ delete arg;
+ return true;
+ });
+ actors_at_boot_.erase(elm, end(actors_at_boot_));
}
-/************
- * Resource *
- ************/
-HostImpl::HostImpl(s4u::Host* host) : piface_(host)
+HostImpl* HostImpl::set_englobing_zone(routing::NetZoneImpl* englobing_zone)
{
- /* The VM wants to reinstall a new HostImpl, but we don't want to leak the previously existing one */
- delete piface_->pimpl_;
- piface_->pimpl_ = this;
+ englobing_zone_ = englobing_zone;
+ return this;
}
-simgrid::surf::StorageImpl* HostImpl::findStorageOnMountList(const char* mount)
+std::vector<s4u::ActorPtr> HostImpl::get_all_actors()
+{
+ std::vector<s4u::ActorPtr> res;
+ for (auto& actor : actor_list_)
+ res.emplace_back(actor.get_ciface());
+ return res;
+}
+size_t HostImpl::get_actor_count() const
{
- XBT_DEBUG("Search for storage name '%s' on '%s'", mount, piface_->getCname());
- if (storage_.find(mount) == storage_.end())
- xbt_die("Can't find mount '%s' for '%s'", mount, piface_->getCname());
+ return actor_list_.size();
+}
- return storage_.at(mount);
+std::vector<s4u::Disk*> HostImpl::get_disks() const
+{
+ std::vector<s4u::Disk*> disks;
+ for (auto const& [_, d] : disks_)
+ disks.push_back(d->get_iface());
+ return disks;
}
-void HostImpl::getAttachedStorageList(std::vector<const char*>* storages)
+s4u::VirtualMachine* HostImpl::create_vm(const std::string& name, int core_amount, size_t ramsize)
{
- for (auto s : storage_)
- if (s.second->attach_ == piface_->getCname())
- storages->push_back(s.second->piface_.getName());
+ auto* host_vm = new kernel::resource::VirtualMachineImpl(name, get_iface(), core_amount, ramsize);
+ auto* vm = new s4u::VirtualMachine(host_vm);
+ host_vm->set_piface(vm);
+ return create_vm(name, vm);
}
-Action* HostImpl::read(surf_file_t fd, sg_size_t size)
+s4u::VirtualMachine* HostImpl::create_vm(const std::string& name, s4u::VirtualMachine* vm)
{
- simgrid::surf::StorageImpl* st = findStorageOnMountList(fd->mount());
- XBT_DEBUG("READ %s on disk '%s'", fd->cname(), st->cname());
- if (fd->tell() + size > fd->size()) {
- if (fd->tell() > fd->size()) {
- size = 0;
- } else {
- size = fd->size() - fd->tell();
- }
- fd->setPosition(fd->size());
- } else
- fd->incrPosition(size);
+ vms_[name] = vm->get_vm_impl();
- return st->read(size);
+ // Create a VCPU for this VM
+ std::vector<double> speeds;
+ for (unsigned long i = 0; i < get_iface()->get_pstate_count(); i++)
+ speeds.push_back(get_iface()->get_pstate_speed(i));
+
+ auto* cpu =
+ englobing_zone_->get_cpu_vm_model()->create_cpu(vm, speeds)->set_core_count(vm->get_vm_impl()->get_core_amount());
+
+ if (get_iface()->get_pstate() != 0)
+ cpu->set_pstate(get_iface()->get_pstate());
+
+ cpu->seal();
+
+ /* Currently, a VM uses the network resource of its physical host */
+ vm->set_netpoint(get_iface()->get_netpoint());
+
+ vm->seal();
+
+ return vm;
+}
+
+void HostImpl::move_vm(VirtualMachineImpl* vm, HostImpl* destination)
+{
+ xbt_assert(vm && destination);
+
+ vms_.erase(vm->get_name());
+ destination->vms_[vm->get_name()] = vm;
}
-Action* HostImpl::write(surf_file_t fd, sg_size_t size)
+void HostImpl::destroy_vm(const std::string& name)
{
- simgrid::surf::StorageImpl* st = findStorageOnMountList(fd->mount());
- XBT_DEBUG("WRITE %s on disk '%s'. size '%llu/%llu'", fd->cname(), st->cname(), size, fd->size());
+ auto* vm = vms_[name];
+ vms_.erase(name);
+ vm->vm_destroy();
+}
+
+VirtualMachineImpl* HostImpl::get_vm_by_name_or_null(const std::string& name) const
+{
+ auto vm_it = vms_.find(name);
+ return vm_it == vms_.end() ? nullptr : vm_it->second;
+}
- StorageAction* action = st->write(size);
- action->file_ = fd;
- /* Substract the part of the file that might disappear from the used sized on the storage element */
- st->usedSize_ -= (fd->size() - fd->tell());
- // If the storage is full before even starting to write
- if (st->usedSize_ >= st->size_) {
- action->setState(Action::State::failed);
+std::vector<s4u::VirtualMachine*> HostImpl::get_vms() const
+{
+ std::vector<s4u::VirtualMachine*> vms;
+ for (const auto& [_, vm] : vms_) {
+ vms.push_back(vm->get_iface());
}
- return action;
+ return vms;
}
+s4u::Disk* HostImpl::create_disk(const std::string& name, double read_bandwidth, double write_bandwidth)
+{
+ auto disk = piface_.get_netpoint()->get_englobing_zone()->get_disk_model()->create_disk(name, read_bandwidth,
+ write_bandwidth);
+ return disk->set_host(&piface_)->get_iface();
}
+
+void HostImpl::add_disk(const s4u::Disk* disk)
+{
+ disks_[disk->get_name()] = disk->get_impl();
+}
+
+void HostImpl::remove_disk(const std::string& name)
+{
+ disks_.erase(name);
+}
+
+void HostImpl::seal()
+{
+ if (sealed_) {
+ return;
+ }
+ // seals host's CPU
+ get_iface()->get_cpu()->seal();
+ sealed_ = true;
+
+ /* seal its disks */
+ for (auto const& [_, disk] : disks_)
+ disk->seal();
+
+ /* seal its VMs */
+ for (auto const& [_, vm] : vms_)
+ vm->seal();
}
+} // namespace resource
+} // namespace kernel
+} // namespace simgrid
