1 /* Copyright (c) 2013-2019. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "src/plugins/vm/VirtualMachineImpl.hpp"
7 #include "src/simix/smx_private.hpp"
11 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_host, surf, "Logging specific to the SURF host module");
13 simgrid::surf::HostModel *surf_host_model = nullptr;
25 /* Helper function for executeParallelTask */
26 static inline double has_cost(const double* array, size_t pos)
33 kernel::resource::Action* HostModel::execute_parallel(const std::vector<s4u::Host*>& host_list,
34 const double* flops_amount, const double* bytes_amount,
37 kernel::resource::Action* action = nullptr;
38 if ((host_list.size() == 1) && (has_cost(bytes_amount, 0) <= 0) && (has_cost(flops_amount, 0) > 0)) {
39 action = host_list[0]->pimpl_cpu->execution_start(flops_amount[0]);
40 } else if ((host_list.size() == 1) && (has_cost(flops_amount, 0) <= 0)) {
41 action = surf_network_model->communicate(host_list[0], host_list[0], bytes_amount[0], rate);
42 } else if ((host_list.size() == 2) && (has_cost(flops_amount, 0) <= 0) && (has_cost(flops_amount, 1) <= 0)) {
46 for (size_t i = 0; i < host_list.size() * host_list.size(); i++) {
47 if (has_cost(bytes_amount, i) > 0.0) {
49 value = has_cost(bytes_amount, i);
53 action = surf_network_model->communicate(host_list[0], host_list[1], value, rate);
55 xbt_die("Cannot have a communication with no flop to exchange in this model. You should consider using the "
58 xbt_die("Cannot have a communication that is not a simple point-to-point in this model. You should consider "
59 "using the ptask model");
63 "This model only accepts one of the following. You should consider using the ptask model for the other cases.\n"
64 " - execution with one host only and no communication\n"
65 " - Self-comms with one host only\n"
66 " - Communications with two hosts and no computation");
74 HostImpl::HostImpl(s4u::Host* host) : piface_(host)
76 /* The VM wants to reinstall a new HostImpl, but we don't want to leak the previously existing one */
77 delete piface_->pimpl_;
78 piface_->pimpl_ = this;
83 /* All processes should be gone when the host is turned off (by the end of the simulation). */
84 if (not actor_list_.empty()) {
85 std::string msg = std::string("Shutting down host, but it's not empty:");
86 for (auto const& process : actor_list_)
87 msg += "\n\t" + std::string(process.get_name());
89 SIMIX_display_process_status();
90 xbt_die("%s", msg.c_str());
92 for (auto const& arg : actors_at_boot_)
94 actors_at_boot_.clear();
96 for (auto const& d : disks_)
100 /** Re-starts all the actors that are marked as restartable.
102 * Weird things will happen if you turn on a host that is already on. S4U is fool-proof, not this.
104 void HostImpl::turn_on()
106 for (auto const& arg : actors_at_boot_) {
107 XBT_DEBUG("Booting Actor %s(%s) right now", arg->name.c_str(), arg->host->get_cname());
108 simgrid::kernel::actor::ActorImplPtr actor = simgrid::kernel::actor::ActorImpl::create(
109 arg->name, arg->code, nullptr, arg->host, arg->properties.get(), nullptr);
111 *actor->on_exit = *arg->on_exit;
112 if (arg->kill_time >= 0)
113 actor->set_kill_time(arg->kill_time);
114 if (arg->auto_restart)
115 actor->set_auto_restart(arg->auto_restart);
121 /** Kill all actors hosted here */
122 void HostImpl::turn_off()
124 if (not actor_list_.empty()) {
125 for (auto& actor : actor_list_) {
126 XBT_DEBUG("Killing Actor %s@%s on behalf of %s which turned off that host.", actor.get_cname(),
127 actor.get_host()->get_cname(), SIMIX_process_self()->get_cname());
128 SIMIX_process_self()->kill(&actor);
131 // When a host is turned off, we want to keep only the actors that should restart for when it will boot again.
132 // Then get rid of the others.
133 auto elm = remove_if(begin(actors_at_boot_), end(actors_at_boot_), [](kernel::actor::ProcessArg* arg) {
134 if (arg->auto_restart)
139 actors_at_boot_.erase(elm, end(actors_at_boot_));
142 std::vector<s4u::ActorPtr> HostImpl::get_all_actors()
144 std::vector<s4u::ActorPtr> res;
145 for (auto& actor : actor_list_)
146 res.push_back(actor.ciface());
149 size_t HostImpl::get_actor_count()
151 return actor_list_.size();
154 std::vector<s4u::Disk*> HostImpl::get_disks()
156 std::vector<s4u::Disk*> disks;
157 for (auto const& d : disks_)
158 disks.push_back(&d->piface_);
162 void HostImpl::add_disk(s4u::Disk* disk)
164 disks_.push_back(disk->get_impl());
167 void HostImpl::remove_disk(const std::string& disk_name)
169 auto position = disks_.begin();
170 for (auto const& d : disks_) {
171 if (d->get_name() == disk_name) {
172 disks_.erase(position);
179 std::vector<const char*> HostImpl::get_attached_storages()
181 std::vector<const char*> storages;
182 for (auto const& s : storage_)
183 if (s.second->get_host() == piface_->get_cname())
184 storages.push_back(s.second->piface_.get_cname());
189 } // namespace simgrid