1 /* Copyright (c) 2007-2015. The SimGrid Team.
2 * All rights reserved. */
4 /* This program is free software; you can redistribute it and/or modify it
5 * under the terms of the license (GNU LGPL) which comes with this package. */
7 #include "smx_private.h"
9 #include "xbt/sysdep.h"
11 #include "src/mc/mc_replay.h"
12 #include "src/surf/virtual_machine.hpp"
13 #include "src/surf/HostImpl.hpp"
15 #include "src/kernel/activity/SynchroExec.hpp"
16 #include "src/kernel/activity/SynchroComm.hpp"
18 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_host, simix, "SIMIX hosts");
22 simgrid::xbt::Extension<simgrid::s4u::Host, Host> Host::EXTENSION_ID;
26 if (!EXTENSION_ID.valid())
27 EXTENSION_ID = simgrid::s4u::Host::extension_create<simgrid::simix::Host>();
29 simgrid::simix::ActorImpl act;
30 process_list = xbt_swag_new(xbt_swag_offset(act, host_proc_hookup));
35 /* Clean Simulator data */
36 if (xbt_swag_size(process_list) != 0) {
37 char *msg = xbt_strdup("Shutting down host, but it's not empty:");
39 smx_actor_t process = nullptr;
41 xbt_swag_foreach(process, process_list) {
42 tmp = bprintf("%s\n\t%s", msg, process->name.c_str());
46 SIMIX_display_process_status();
47 THROWF(arg_error, 0, "%s", msg);
49 for (auto arg : auto_restart_processes)
51 auto_restart_processes.clear();
52 for (auto arg : boot_processes)
54 boot_processes.clear();
55 xbt_swag_free(process_list);
58 /** Re-starts all the actors that are marked as restartable.
60 * Weird things will happen if you turn on an host that is already on. S4U is fool-proof, not this.
64 for (auto arg : boot_processes) {
65 XBT_DEBUG("Booting Process %s(%s) right now", arg->name.c_str(), arg->host->name().c_str());
66 simix_global->create_process_function(arg->name.c_str(),
79 /** @brief Stop the host if it is on */
80 void SIMIX_host_off(sg_host_t h, smx_actor_t issuer)
82 smx_host_priv_t host = sg_host_simix(h);
84 xbt_assert((host != nullptr), "Invalid parameters");
87 simgrid::surf::HostImpl* surf_host = h->extension<simgrid::surf::HostImpl>();
90 /* Clean Simulator data */
91 if (xbt_swag_size(host->process_list) != 0) {
92 smx_actor_t process = nullptr;
93 xbt_swag_foreach(process, host->process_list) {
94 SIMIX_process_kill(process, issuer);
95 XBT_DEBUG("Killing %s on %s by %s",
96 process->name.c_str(), sg_host_get_name(process->host),
97 issuer->name.c_str());
101 XBT_INFO("Host %s is already off", h->name().c_str());
105 sg_host_t SIMIX_host_self()
107 smx_actor_t process = SIMIX_process_self();
108 return (process == nullptr) ? nullptr : process->host;
111 /* needs to be public and without simcall for exceptions and logging events */
112 const char* SIMIX_host_self_get_name()
114 sg_host_t host = SIMIX_host_self();
115 if (host == nullptr || SIMIX_process_self() == simix_global->maestro_process)
118 return sg_host_get_name(host);
121 void _SIMIX_host_free_process_arg(void *data)
123 smx_process_arg_t arg = *(static_cast<smx_process_arg_t*>(data));
127 * \brief Add a process to the list of the processes that the host will restart when it comes back
128 * This function add a process to the list of the processes that will be restarted when the host comes
129 * back. It is expected that this function is called when the host is down.
130 * The processes will only be restarted once, meaning that you will have to register the process
131 * again to restart the process again.
133 void SIMIX_host_add_auto_restart_process(
134 sg_host_t host, const char *name, std::function<void()> code,
135 void* data, double kill_time, xbt_dict_t properties, int auto_restart)
137 smx_process_arg_t arg = new simgrid::simix::ProcessArg();
139 arg->code = std::move(code);
142 arg->kill_time = kill_time;
143 arg->properties = properties;
144 arg->auto_restart = auto_restart;
146 if( host->isOff() && !xbt_dict_get_or_null(watched_hosts_lib,sg_host_get_name(host))){
147 xbt_dict_set(watched_hosts_lib,sg_host_get_name(host),host,nullptr);
148 XBT_DEBUG("Push host %s to watched_hosts_lib because state == SURF_RESOURCE_OFF",sg_host_get_name(host));
150 sg_host_simix(host)->auto_restart_processes.push_back(arg);
152 /** @brief Restart the list of processes that have been registered to the host */
153 void SIMIX_host_autorestart(sg_host_t host)
155 std::vector<simgrid::simix::ProcessArg*> process_list = sg_host_simix(host)->auto_restart_processes;
156 if (process_list.empty())
159 for (auto arg : process_list) {
161 XBT_DEBUG("Restarting Process %s@%s right now", arg->name.c_str(), arg->host->name().c_str());
162 simix_global->create_process_function(arg->name.c_str(), arg->code, nullptr, arg->host, arg->kill_time,
163 arg->properties, arg->auto_restart, nullptr);
165 process_list.clear();
168 smx_activity_t simcall_HANDLER_execution_start(smx_simcall_t simcall, const char* name, double flops_amount,
169 double priority, double bound) {
170 return SIMIX_execution_start(simcall->issuer, name,flops_amount,priority,bound);
173 smx_activity_t SIMIX_execution_start(smx_actor_t issuer, const char *name, double flops_amount, double priority,
176 /* alloc structures and initialize */
177 simgrid::kernel::activity::Exec *exec = new simgrid::kernel::activity::Exec(name, issuer->host);
179 /* set surf's action */
180 if (!MC_is_active() && !MC_record_replay_is_active()) {
182 exec->surf_exec = issuer->host->pimpl_cpu->execution_start(flops_amount);
183 exec->surf_exec->setData(exec);
184 exec->surf_exec->setPriority(priority);
187 static_cast<simgrid::surf::CpuAction*>(exec->surf_exec)->setBound(bound);
190 XBT_DEBUG("Create execute synchro %p: %s", exec, exec->name.c_str());
195 smx_activity_t SIMIX_execution_parallel_start(const char *name, int host_nb, sg_host_t *host_list, double *flops_amount,
196 double *bytes_amount, double amount, double rate){
198 /* alloc structures and initialize */
199 simgrid::kernel::activity::Exec *exec = new simgrid::kernel::activity::Exec(name, nullptr);
201 /* set surf's synchro */
202 sg_host_t *host_list_cpy = xbt_new0(sg_host_t, host_nb);
203 for (int i = 0; i < host_nb; i++)
204 host_list_cpy[i] = host_list[i];
206 /* Check that we are not mixing VMs and PMs in the parallel task */
207 simgrid::surf::HostImpl *host = host_list[0]->extension<simgrid::surf::HostImpl>();
208 bool is_a_vm = (nullptr != dynamic_cast<simgrid::surf::VirtualMachine*>(host));
209 for (int i = 1; i < host_nb; i++) {
210 bool tmp_is_a_vm = (nullptr != dynamic_cast<simgrid::surf::VirtualMachine*>(host_list[i]->extension<simgrid::surf::HostImpl>()));
211 xbt_assert(is_a_vm == tmp_is_a_vm, "parallel_execute: mixing VMs and PMs is not supported (yet).");
214 /* set surf's synchro */
215 if (!MC_is_active() && !MC_record_replay_is_active()) {
216 exec->surf_exec = surf_host_model->executeParallelTask(host_nb, host_list_cpy, flops_amount, bytes_amount, rate);
217 exec->surf_exec->setData(exec);
219 XBT_DEBUG("Create parallel execute synchro %p", exec);
224 void SIMIX_execution_cancel(smx_activity_t synchro)
226 XBT_DEBUG("Cancel synchro %p", synchro);
227 simgrid::kernel::activity::Exec *exec = static_cast<simgrid::kernel::activity::Exec *>(synchro);
230 exec->surf_exec->cancel();
233 void SIMIX_execution_set_priority(smx_activity_t synchro, double priority)
235 simgrid::kernel::activity::Exec *exec = static_cast<simgrid::kernel::activity::Exec *>(synchro);
237 exec->surf_exec->setPriority(priority);
240 void SIMIX_execution_set_bound(smx_activity_t synchro, double bound)
242 simgrid::kernel::activity::Exec *exec = static_cast<simgrid::kernel::activity::Exec *>(synchro);
244 static_cast<simgrid::surf::CpuAction*>(exec->surf_exec)->setBound(bound);
247 void simcall_HANDLER_execution_wait(smx_simcall_t simcall, smx_activity_t synchro)
249 simgrid::kernel::activity::Exec *exec = static_cast<simgrid::kernel::activity::Exec *>(synchro);
250 XBT_DEBUG("Wait for execution of synchro %p, state %d", synchro, (int)synchro->state);
252 /* Associate this simcall to the synchro */
253 synchro->simcalls.push_back(simcall);
254 simcall->issuer->waiting_synchro = synchro;
256 /* set surf's synchro */
257 if (MC_is_active() || MC_record_replay_is_active()) {
258 synchro->state = SIMIX_DONE;
259 SIMIX_execution_finish(exec);
263 /* If the synchro is already finished then perform the error handling */
264 if (synchro->state != SIMIX_RUNNING)
265 SIMIX_execution_finish(exec);
268 void SIMIX_execution_finish(simgrid::kernel::activity::Exec *exec)
270 for (smx_simcall_t simcall : exec->simcalls) {
271 switch (exec->state) {
274 /* do nothing, synchro done */
275 XBT_DEBUG("SIMIX_execution_finished: execution successful");
279 XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", sg_host_get_name(simcall->issuer->host));
280 simcall->issuer->context->iwannadie = 1;
281 SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
285 XBT_DEBUG("SIMIX_execution_finished: execution canceled");
286 SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
290 xbt_die("Internal error in SIMIX_execution_finish: unexpected synchro state %d",
293 /* Fail the process if the host is down */
294 if (simcall->issuer->host->isOff())
295 simcall->issuer->context->iwannadie = 1;
297 simcall->issuer->waiting_synchro = nullptr;
298 simcall_execution_wait__set__result(simcall, exec->state);
299 SIMIX_simcall_answer(simcall);
302 /* We no longer need it */
306 void SIMIX_set_category(smx_activity_t synchro, const char *category)
308 if (synchro->state != SIMIX_RUNNING)
311 simgrid::kernel::activity::Exec *exec = dynamic_cast<simgrid::kernel::activity::Exec *>(synchro);
312 if (exec != nullptr) {
313 exec->surf_exec->setCategory(category);
317 simgrid::kernel::activity::Comm *comm = dynamic_cast<simgrid::kernel::activity::Comm *>(synchro);
318 if (comm != nullptr) {
319 comm->surf_comm->setCategory(category);