1 /* Copyright (c) 2007-2016. 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. */
7 #include "smx_private.h"
8 #include "src/kernel/activity/CommImpl.hpp"
9 #include "src/mc/mc_replay.h"
10 #include "src/plugins/vm/VirtualMachineImpl.hpp"
13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_host, simix, "SIMIX hosts");
17 simgrid::xbt::Extension<simgrid::s4u::Host, Host> Host::EXTENSION_ID;
21 if (not Host::EXTENSION_ID.valid())
22 Host::EXTENSION_ID = s4u::Host::extension_create<simix::Host>();
24 simgrid::simix::ActorImpl act;
25 process_list = xbt_swag_new(xbt_swag_offset(act, host_proc_hookup));
30 /* Clean Simulator data */
31 if (xbt_swag_size(process_list) != 0) {
32 char *msg = xbt_strdup("Shutting down host, but it's not empty:");
34 smx_actor_t process = nullptr;
36 xbt_swag_foreach(process, process_list) {
37 tmp = bprintf("%s\n\t%s", msg, process->name.c_str());
41 SIMIX_display_process_status();
42 THROWF(arg_error, 0, "%s", msg);
44 for (auto arg : auto_restart_processes)
46 auto_restart_processes.clear();
47 for (auto arg : boot_processes)
49 boot_processes.clear();
50 xbt_swag_free(process_list);
53 /** Re-starts all the actors that are marked as restartable.
55 * Weird things will happen if you turn on an host that is already on. S4U is fool-proof, not this.
59 for (auto arg : boot_processes) {
60 XBT_DEBUG("Booting Process %s(%s) right now", arg->name.c_str(), arg->host->cname());
61 smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), arg->code, nullptr, arg->host,
62 arg->properties, nullptr);
63 if (arg->kill_time >= 0)
64 simcall_process_set_kill_time(actor, arg->kill_time);
65 if (arg->auto_restart)
66 simcall_process_auto_restart_set(actor, arg->auto_restart);
72 /** @brief Stop the host if it is on */
73 void SIMIX_host_off(sg_host_t h, smx_actor_t issuer)
75 simgrid::simix::Host* host = h->extension<simgrid::simix::Host>();
77 xbt_assert((host != nullptr), "Invalid parameters");
80 h->pimpl_cpu->turnOff();
82 /* Clean Simulator data */
83 if (xbt_swag_size(host->process_list) != 0) {
84 smx_actor_t process = nullptr;
85 xbt_swag_foreach(process, host->process_list) {
86 SIMIX_process_kill(process, issuer);
87 XBT_DEBUG("Killing %s@%s on behalf of %s", process->cname(), process->host->cname(), issuer->cname());
91 XBT_INFO("Host %s is already off", h->cname());
95 sg_host_t SIMIX_host_self()
97 smx_actor_t process = SIMIX_process_self();
98 return (process == nullptr) ? nullptr : process->host;
101 /* needs to be public and without simcall for exceptions and logging events */
102 const char* SIMIX_host_self_get_name()
104 sg_host_t host = SIMIX_host_self();
105 if (host == nullptr || SIMIX_process_self() == simix_global->maestro_process)
108 return host->cname();
112 * \brief Add a process to the list of the processes that the host will restart when it comes back
113 * This function add a process to the list of the processes that will be restarted when the host comes
114 * back. It is expected that this function is called when the host is down.
115 * The processes will only be restarted once, meaning that you will have to register the process
116 * again to restart the process again.
118 void SIMIX_host_add_auto_restart_process(
119 sg_host_t host, const char *name, std::function<void()> code,
120 void* data, double kill_time, xbt_dict_t properties, int auto_restart)
122 smx_process_arg_t arg = new simgrid::simix::ProcessArg();
124 arg->code = std::move(code);
127 arg->kill_time = kill_time;
128 arg->properties = properties;
129 arg->auto_restart = auto_restart;
131 if (host->isOff() && not xbt_dict_get_or_null(watched_hosts_lib, host->cname())) {
132 xbt_dict_set(watched_hosts_lib, host->cname(), host, nullptr);
133 XBT_DEBUG("Push host %s to watched_hosts_lib because state == SURF_RESOURCE_OFF", host->cname());
135 host->extension<simgrid::simix::Host>()->auto_restart_processes.push_back(arg);
137 /** @brief Restart the list of processes that have been registered to the host */
138 void SIMIX_host_autorestart(sg_host_t host)
140 std::vector<simgrid::simix::ProcessArg*> process_list =
141 host->extension<simgrid::simix::Host>()->auto_restart_processes;
143 for (auto arg : process_list) {
144 XBT_DEBUG("Restarting Process %s@%s right now", arg->name.c_str(), arg->host->cname());
145 smx_actor_t actor = simix_global->create_process_function(arg->name.c_str(), arg->code, nullptr, arg->host,
146 arg->properties, nullptr);
147 if (arg->kill_time >= 0)
148 simcall_process_set_kill_time(actor, arg->kill_time);
149 if (arg->auto_restart)
150 simcall_process_auto_restart_set(actor, arg->auto_restart);
152 process_list.clear();
155 smx_activity_t simcall_HANDLER_execution_start(smx_simcall_t simcall, const char* name, double flops_amount,
156 double priority, double bound) {
157 return SIMIX_execution_start(simcall->issuer, name,flops_amount,priority,bound);
160 smx_activity_t SIMIX_execution_start(smx_actor_t issuer, const char *name, double flops_amount, double priority,
163 /* alloc structures and initialize */
164 simgrid::kernel::activity::ExecImpl* exec = new simgrid::kernel::activity::ExecImpl(name, issuer->host);
166 /* set surf's action */
167 if (not MC_is_active() && not MC_record_replay_is_active()) {
169 exec->surf_exec = issuer->host->pimpl_cpu->execution_start(flops_amount);
170 exec->surf_exec->setData(exec);
171 exec->surf_exec->setPriority(priority);
174 static_cast<simgrid::surf::CpuAction*>(exec->surf_exec)->setBound(bound);
177 XBT_DEBUG("Create execute synchro %p: %s", exec, exec->name.c_str());
182 smx_activity_t SIMIX_execution_parallel_start(const char* name, int host_nb, sg_host_t* host_list, double* flops_amount,
183 double* bytes_amount, double amount, double rate, double timeout)
186 /* alloc structures and initialize */
187 simgrid::kernel::activity::ExecImpl* exec = new simgrid::kernel::activity::ExecImpl(name, nullptr);
189 /* set surf's synchro */
190 sg_host_t *host_list_cpy = xbt_new0(sg_host_t, host_nb);
191 for (int i = 0; i < host_nb; i++)
192 host_list_cpy[i] = host_list[i];
194 /* Check that we are not mixing VMs and PMs in the parallel task */
195 bool is_a_vm = (nullptr != dynamic_cast<simgrid::s4u::VirtualMachine*>(host_list[0]));
196 for (int i = 1; i < host_nb; i++) {
197 bool tmp_is_a_vm = (nullptr != dynamic_cast<simgrid::s4u::VirtualMachine*>(host_list[i]));
198 xbt_assert(is_a_vm == tmp_is_a_vm, "parallel_execute: mixing VMs and PMs is not supported (yet).");
201 /* set surf's synchro */
202 if (not MC_is_active() && not MC_record_replay_is_active()) {
203 exec->surf_exec = surf_host_model->executeParallelTask(host_nb, host_list_cpy, flops_amount, bytes_amount, rate);
204 exec->surf_exec->setData(exec);
206 exec->timeoutDetector = host_list[0]->pimpl_cpu->sleep(timeout);
207 exec->timeoutDetector->setData(exec);
210 XBT_DEBUG("Create parallel execute synchro %p", exec);
215 void SIMIX_execution_cancel(smx_activity_t synchro)
217 XBT_DEBUG("Cancel synchro %p", synchro);
218 simgrid::kernel::activity::ExecImpl* exec = static_cast<simgrid::kernel::activity::ExecImpl*>(synchro);
221 exec->surf_exec->cancel();
224 void SIMIX_execution_set_priority(smx_activity_t synchro, double priority)
226 simgrid::kernel::activity::ExecImpl* exec = static_cast<simgrid::kernel::activity::ExecImpl*>(synchro);
228 exec->surf_exec->setPriority(priority);
231 void SIMIX_execution_set_bound(smx_activity_t synchro, double bound)
233 simgrid::kernel::activity::ExecImpl* exec = static_cast<simgrid::kernel::activity::ExecImpl*>(synchro);
235 static_cast<simgrid::surf::CpuAction*>(exec->surf_exec)->setBound(bound);
238 void simcall_HANDLER_execution_wait(smx_simcall_t simcall, smx_activity_t synchro)
240 simgrid::kernel::activity::ExecImpl* exec = static_cast<simgrid::kernel::activity::ExecImpl*>(synchro);
241 XBT_DEBUG("Wait for execution of synchro %p, state %d", synchro, (int)synchro->state);
243 /* Associate this simcall to the synchro */
244 synchro->simcalls.push_back(simcall);
245 simcall->issuer->waiting_synchro = synchro;
247 /* set surf's synchro */
248 if (MC_is_active() || MC_record_replay_is_active()) {
249 synchro->state = SIMIX_DONE;
250 SIMIX_execution_finish(exec);
254 /* If the synchro is already finished then perform the error handling */
255 if (synchro->state != SIMIX_RUNNING)
256 SIMIX_execution_finish(exec);
259 void SIMIX_execution_finish(simgrid::kernel::activity::ExecImpl* exec)
261 for (smx_simcall_t simcall : exec->simcalls) {
262 switch (exec->state) {
265 /* do nothing, synchro done */
266 XBT_DEBUG("SIMIX_execution_finished: execution successful");
270 XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", simcall->issuer->host->cname());
271 simcall->issuer->context->iwannadie = 1;
272 SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
276 XBT_DEBUG("SIMIX_execution_finished: execution canceled");
277 SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
281 XBT_DEBUG("SIMIX_execution_finished: execution timeouted");
282 SMX_EXCEPTION(simcall->issuer, timeout_error, 0, "Timeouted");
286 xbt_die("Internal error in SIMIX_execution_finish: unexpected synchro state %d",
289 /* Fail the process if the host is down */
290 if (simcall->issuer->host->isOff())
291 simcall->issuer->context->iwannadie = 1;
293 simcall->issuer->waiting_synchro = nullptr;
294 simcall_execution_wait__set__result(simcall, exec->state);
295 SIMIX_simcall_answer(simcall);
298 /* We no longer need it */
302 void SIMIX_set_category(smx_activity_t synchro, const char *category)
304 if (synchro->state != SIMIX_RUNNING)
307 simgrid::kernel::activity::ExecImpl* exec = dynamic_cast<simgrid::kernel::activity::ExecImpl*>(synchro);
308 if (exec != nullptr) {
309 exec->surf_exec->setCategory(category);
313 simgrid::kernel::activity::CommImpl* comm = dynamic_cast<simgrid::kernel::activity::CommImpl*>(synchro);
314 if (comm != nullptr) {
315 comm->surf_comm->setCategory(category);