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"
8 #include "xbt/sysdep.h"
10 #include "src/mc/mc_replay.h"
11 #include "src/surf/virtual_machine.hpp"
12 #include "src/surf/HostImpl.hpp"
14 #include "src/simix/SynchroExec.hpp"
15 #include "src/simix/SynchroComm.hpp"
17 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_host, simix, "SIMIX hosts");
20 * \brief Internal function to create a SIMIX host.
21 * \param name name of the host to create
23 void SIMIX_host_create(sg_host_t host) // FIXME: braindead prototype. Take sg_host as parameter
25 smx_host_priv_t smx_host = xbt_new0(s_smx_host_priv_t, 1);
28 simgrid::simix::Process proc;
29 smx_host->process_list = xbt_swag_new(xbt_swag_offset(proc, host_proc_hookup));
31 /* Update global variables */
32 sg_host_simix_set(host, smx_host);
36 * \brief Start the host if it is off
39 void SIMIX_host_on(sg_host_t h)
41 smx_host_priv_t host = sg_host_simix(h);
43 xbt_assert((host != NULL), "Invalid parameters");
46 simgrid::surf::HostImpl* surf_host = h->extension<simgrid::surf::HostImpl>();
50 smx_process_arg_t arg;
51 xbt_dynar_foreach(host->boot_processes,cpt,arg) {
53 char** argv = xbt_new(char*, arg->argc);
54 for (int i=0; i<arg->argc; i++)
55 argv[i] = xbt_strdup(arg->argv[i]);
57 XBT_DEBUG("Booting Process %s(%s) right now", arg->argv[0], arg->hostname);
58 if (simix_global->create_process_function) {
59 simix_global->create_process_function(argv[0],
70 simcall_process_create(arg->argv[0],
85 * \brief Stop the host if it is on
88 void SIMIX_host_off(sg_host_t h, smx_process_t issuer)
90 smx_host_priv_t host = sg_host_simix(h);
92 xbt_assert((host != NULL), "Invalid parameters");
95 simgrid::surf::HostImpl* surf_host = h->extension<simgrid::surf::HostImpl>();
98 /* Clean Simulator data */
99 if (xbt_swag_size(host->process_list) != 0) {
100 smx_process_t process = NULL;
101 xbt_swag_foreach(process, host->process_list) {
102 SIMIX_process_kill(process, issuer);
103 XBT_DEBUG("Killing %s on %s by %s", process->name, sg_host_get_name(process->host), issuer->name);
107 XBT_INFO("Host %s is already off",h->name().c_str());
112 * \brief Internal function to destroy a SIMIX host.
114 * \param h the host to destroy (a sg_host_t)
116 void SIMIX_host_destroy(void *h)
118 smx_host_priv_t host = (smx_host_priv_t) h;
120 xbt_assert((host != NULL), "Invalid parameters");
122 /* Clean Simulator data */
123 if (xbt_swag_size(host->process_list) != 0) {
124 char *msg = xbt_strdup("Shutting down host, but it's not empty:");
126 smx_process_t process = NULL;
128 xbt_swag_foreach(process, host->process_list) {
129 tmp = bprintf("%s\n\t%s", msg, process->name);
133 SIMIX_display_process_status();
134 THROWF(arg_error, 0, "%s", msg);
136 xbt_dynar_free(&host->auto_restart_processes);
137 xbt_dynar_free(&host->boot_processes);
138 xbt_swag_free(host->process_list);
140 /* Clean host structure */
145 sg_host_t SIMIX_host_self(void)
147 smx_process_t process = SIMIX_process_self();
148 return (process == NULL) ? NULL : SIMIX_process_get_host(process);
151 /* needs to be public and without simcall because it is called
152 by exceptions and logging events */
153 const char* SIMIX_host_self_get_name(void)
155 sg_host_t host = SIMIX_host_self();
156 if (host == NULL || SIMIX_process_self() == simix_global->maestro_process)
159 return sg_host_get_name(host);
162 void _SIMIX_host_free_process_arg(void *data)
164 smx_process_arg_t arg = *(smx_process_arg_t*)data;
165 for (int i = 0; i < arg->argc; i++)
166 xbt_free(arg->argv[i]);
171 * \brief Add a process to the list of the processes that the host will restart when it comes back
172 * This function add a process to the list of the processes that will be restarted when the host comes
173 * back. It is expected that this function is called when the host is down.
174 * The processes will only be restarted once, meaning that you will have to register the process
175 * again to restart the process again.
177 void SIMIX_host_add_auto_restart_process(sg_host_t host,
179 xbt_main_func_t code,
181 const char *hostname,
183 int argc, char **argv,
184 xbt_dict_t properties,
187 if (!sg_host_simix(host)->auto_restart_processes) {
188 sg_host_simix(host)->auto_restart_processes = xbt_dynar_new(sizeof(smx_process_arg_t),_SIMIX_host_free_process_arg);
190 smx_process_arg_t arg = new s_smx_process_arg_t();
194 arg->hostname = hostname;
195 arg->kill_time = kill_time;
198 arg->argv = xbt_new(char*,argc + 1);
200 for (int i = 0; i < argc; i++)
201 arg->argv[i] = xbt_strdup(argv[i]);
202 arg->argv[argc] = NULL;
204 arg->properties = properties;
205 arg->auto_restart = auto_restart;
207 if( host->isOff() && !xbt_dict_get_or_null(watched_hosts_lib,sg_host_get_name(host))){
208 xbt_dict_set(watched_hosts_lib,sg_host_get_name(host),host,NULL);
209 XBT_DEBUG("Push host %s to watched_hosts_lib because state == SURF_RESOURCE_OFF",sg_host_get_name(host));
211 xbt_dynar_push_as(sg_host_simix(host)->auto_restart_processes,smx_process_arg_t,arg);
214 * \brief Restart the list of processes that have been registered to the host
216 void SIMIX_host_autorestart(sg_host_t host)
219 smx_process_arg_t arg;
220 xbt_dynar_t process_list = sg_host_simix(host)->auto_restart_processes;
224 xbt_dynar_foreach (process_list, cpt, arg) {
226 XBT_DEBUG("Restarting Process %s(%s) right now", arg->argv[0], arg->hostname);
227 if (simix_global->create_process_function) {
228 simix_global->create_process_function(arg->argv[0],
239 simcall_process_create(arg->argv[0],
240 (xbt_main_func_t) arg->code,
250 /* arg->argv is used by the process created above. Hide it to
251 * _SIMIX_host_free_process_arg() which is called by xbt_dynar_reset()
256 xbt_dynar_reset(process_list);
259 smx_synchro_t simcall_HANDLER_execution_start(smx_simcall_t simcall,
260 const char* name, double flops_amount, double priority, double bound, unsigned long affinity_mask) {
261 return SIMIX_execution_start(simcall->issuer, name,flops_amount,priority,bound,affinity_mask);
263 smx_synchro_t SIMIX_execution_start(smx_process_t issuer, const char *name,
264 double flops_amount, double priority, double bound, unsigned long affinity_mask){
266 /* alloc structures and initialize */
267 simgrid::simix::Exec *exec = new simgrid::simix::Exec();
268 exec->name = xbt_strdup(name);
269 exec->state = SIMIX_RUNNING;
270 exec->host = issuer->host;
272 /* set surf's action */
273 if (!MC_is_active() && !MC_record_replay_is_active()) {
275 exec->surf_exec = issuer->host->pimpl_cpu->execution_start(flops_amount);
276 exec->surf_exec->setData(exec);
277 exec->surf_exec->setPriority(priority);
280 static_cast<simgrid::surf::CpuAction*>(exec->surf_exec)->setBound(bound);
282 if (affinity_mask != 0) {
283 /* just a double check to confirm that this host is the host where this task is running. */
284 xbt_assert(exec->host == issuer->host);
285 static_cast<simgrid::surf::CpuAction*>(exec->surf_exec)
286 ->setAffinity(issuer->host->pimpl_cpu, affinity_mask);
290 XBT_DEBUG("Create execute synchro %p: %s", exec, exec->name);
295 smx_synchro_t SIMIX_execution_parallel_start(const char *name,
296 int host_nb, sg_host_t *host_list,
297 double *flops_amount, double *bytes_amount,
298 double amount, double rate){
300 sg_host_t *host_list_cpy = NULL;
303 /* alloc structures and initialize */
304 simgrid::simix::Exec *exec = new simgrid::simix::Exec();
305 exec->name = xbt_strdup(name);
306 exec->state = SIMIX_RUNNING;
307 exec->host = nullptr; /* FIXME: do we need the list of hosts? */
309 /* set surf's synchro */
310 host_list_cpy = xbt_new0(sg_host_t, host_nb);
311 for (i = 0; i < host_nb; i++)
312 host_list_cpy[i] = host_list[i];
314 /* Check that we are not mixing VMs and PMs in the parallel task */
315 simgrid::surf::HostImpl *host = host_list[0]->extension<simgrid::surf::HostImpl>();
316 bool is_a_vm = (nullptr != dynamic_cast<simgrid::surf::VirtualMachine*>(host));
317 for (i = 1; i < host_nb; i++) {
318 bool tmp_is_a_vm = (nullptr != dynamic_cast<simgrid::surf::VirtualMachine*>(host_list[i]->extension<simgrid::surf::HostImpl>()));
319 xbt_assert(is_a_vm == tmp_is_a_vm, "parallel_execute: mixing VMs and PMs is not supported (yet).");
322 /* set surf's synchro */
323 if (!MC_is_active() && !MC_record_replay_is_active()) {
324 exec->surf_exec = surf_host_model->executeParallelTask(host_nb, host_list_cpy, flops_amount, bytes_amount, rate);
325 exec->surf_exec->setData(exec);
327 XBT_DEBUG("Create parallel execute synchro %p", exec);
332 void SIMIX_execution_cancel(smx_synchro_t synchro)
334 XBT_DEBUG("Cancel synchro %p", synchro);
335 simgrid::simix::Exec *exec = static_cast<simgrid::simix::Exec *>(synchro);
338 exec->surf_exec->cancel();
341 void SIMIX_execution_set_priority(smx_synchro_t synchro, double priority)
343 simgrid::simix::Exec *exec = static_cast<simgrid::simix::Exec *>(synchro);
345 exec->surf_exec->setPriority(priority);
348 void SIMIX_execution_set_bound(smx_synchro_t synchro, double bound)
350 simgrid::simix::Exec *exec = static_cast<simgrid::simix::Exec *>(synchro);
352 static_cast<simgrid::surf::CpuAction*>(exec->surf_exec)->setBound(bound);
355 void SIMIX_execution_set_affinity(smx_synchro_t synchro, sg_host_t host, unsigned long mask)
357 simgrid::simix::Exec *exec = static_cast<simgrid::simix::Exec *>(synchro);
358 if(exec->surf_exec) {
359 /* just a double check to confirm that this host is the host where this task is running. */
360 xbt_assert(exec->host == host);
361 static_cast<simgrid::surf::CpuAction*>(exec->surf_exec)->setAffinity(host->pimpl_cpu, mask);
365 void simcall_HANDLER_execution_wait(smx_simcall_t simcall, smx_synchro_t synchro)
367 simgrid::simix::Exec *exec = static_cast<simgrid::simix::Exec *>(synchro);
368 XBT_DEBUG("Wait for execution of synchro %p, state %d", synchro, (int)synchro->state);
370 /* Associate this simcall to the synchro */
371 xbt_fifo_push(synchro->simcalls, simcall);
372 simcall->issuer->waiting_synchro = synchro;
374 /* set surf's synchro */
375 if (MC_is_active() || MC_record_replay_is_active()) {
376 synchro->state = SIMIX_DONE;
377 SIMIX_execution_finish(exec);
381 /* If the synchro is already finished then perform the error handling */
382 if (synchro->state != SIMIX_RUNNING)
383 SIMIX_execution_finish(exec);
386 void SIMIX_execution_finish(simgrid::simix::Exec *exec)
388 xbt_fifo_item_t item;
389 smx_simcall_t simcall;
391 xbt_fifo_foreach(exec->simcalls, item, simcall, smx_simcall_t) {
393 switch (exec->state) {
396 /* do nothing, synchro done */
397 XBT_DEBUG("SIMIX_execution_finished: execution successful");
401 XBT_DEBUG("SIMIX_execution_finished: host '%s' failed", sg_host_get_name(simcall->issuer->host));
402 simcall->issuer->context->iwannadie = 1;
403 SMX_EXCEPTION(simcall->issuer, host_error, 0, "Host failed");
407 XBT_DEBUG("SIMIX_execution_finished: execution canceled");
408 SMX_EXCEPTION(simcall->issuer, cancel_error, 0, "Canceled");
412 xbt_die("Internal error in SIMIX_execution_finish: unexpected synchro state %d",
415 /* Fail the process if the host is down */
416 if (simcall->issuer->host->isOff())
417 simcall->issuer->context->iwannadie = 1;
419 simcall->issuer->waiting_synchro = NULL;
420 simcall_execution_wait__set__result(simcall, exec->state);
421 SIMIX_simcall_answer(simcall);
424 /* We no longer need it */
428 void SIMIX_set_category(smx_synchro_t synchro, const char *category)
430 if (synchro->state != SIMIX_RUNNING) return;
432 simgrid::simix::Exec *exec = dynamic_cast<simgrid::simix::Exec *>(synchro);
433 if (exec != nullptr) {
434 exec->surf_exec->setCategory(category);
438 simgrid::simix::Comm *comm = dynamic_cast<simgrid::simix::Comm *>(synchro);
439 if (comm != nullptr) {
440 comm->surf_comm->setCategory(category);