1 /* Copyright (c) 2007, 2008, 2009, 2010. 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. */
9 #include "xbt/sysdep.h"
12 #include "xbt/ex.h" /* ex_backtrace_display */
15 XBT_LOG_EXTERNAL_CATEGORY(simix);
16 XBT_LOG_EXTERNAL_CATEGORY(simix_action);
17 XBT_LOG_EXTERNAL_CATEGORY(simix_deployment);
18 XBT_LOG_EXTERNAL_CATEGORY(simix_environment);
19 XBT_LOG_EXTERNAL_CATEGORY(simix_host);
20 XBT_LOG_EXTERNAL_CATEGORY(simix_process);
21 XBT_LOG_EXTERNAL_CATEGORY(simix_synchro);
22 XBT_LOG_EXTERNAL_CATEGORY(simix_context);
23 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_kernel, simix,
24 "Logging specific to SIMIX (kernel)");
26 smx_global_t simix_global = NULL;
27 static xbt_heap_t simix_timers = NULL;
29 /* FIXME: Yeah, I'll do it in a portable maner one day [Mt] */
32 static void _XBT_CALL inthandler(int ignored)
34 INFO0("CTRL-C pressed. Displaying status and bailing out");
35 SIMIX_display_process_status();
39 /********************************* SIMIX **************************************/
41 XBT_INLINE double SIMIX_timer_next(void)
43 return xbt_heap_size(simix_timers) > 0 ? xbt_heap_maxkey(simix_timers) : -1.0;
47 * \brief Initialize SIMIX internal data.
52 void SIMIX_global_init(int *argc, char **argv)
57 /* Connect our log channels: that must be done manually under windows */
58 XBT_LOG_CONNECT(simix_action, simix);
59 XBT_LOG_CONNECT(simix_deployment, simix);
60 XBT_LOG_CONNECT(simix_environment, simix);
61 XBT_LOG_CONNECT(simix_host, simix);
62 XBT_LOG_CONNECT(simix_kernel, simix);
63 XBT_LOG_CONNECT(simix_process, simix);
64 XBT_LOG_CONNECT(simix_synchro, simix);
65 XBT_LOG_CONNECT(simix_context, simix);
67 simix_global = xbt_new0(s_smx_global_t, 1);
69 simix_global->host = xbt_dict_new();
70 simix_global->process_to_run = xbt_dynar_new(sizeof(void *), NULL);
71 simix_global->process_list =
72 xbt_swag_new(xbt_swag_offset(proc, process_hookup));
73 simix_global->process_to_destroy =
74 xbt_swag_new(xbt_swag_offset(proc, destroy_hookup));
76 simix_global->maestro_process = NULL;
77 simix_global->registered_functions = xbt_dict_new();
79 simix_global->create_process_function = NULL;
80 simix_global->kill_process_function = NULL;
81 simix_global->cleanup_process_function = SIMIX_process_cleanup;
83 surf_init(argc, argv); /* Initialize SURF structures */
84 SIMIX_context_mod_init();
85 SIMIX_create_maestro_process();
87 /* context exception handlers */
88 __xbt_running_ctx_fetch = SIMIX_process_get_running_context;
89 __xbt_ex_terminate = SIMIX_process_exception_terminate;
91 /* Initialize request mechanism */
94 /* Initialize the SIMIX network module */
97 /* Prepare to display some more info when dying on Ctrl-C pressing */
98 signal(SIGINT, inthandler);
101 simix_timers = xbt_heap_new(8, &free);
106 * \brief Clean the SIMIX simulation
108 * This functions remove the memory used by SIMIX
110 void SIMIX_clean(void)
112 /* Kill everyone (except maestro) */
113 SIMIX_process_killall();
115 /* Exit the SIMIX network module */
116 SIMIX_network_exit();
118 /* Exit request mechanism */
119 SIMIX_request_destroy();
121 xbt_heap_free(simix_timers);
122 /* Free the remaining data structures */
123 xbt_dynar_free(&simix_global->process_to_run);
124 xbt_swag_free(simix_global->process_to_destroy);
125 xbt_swag_free(simix_global->process_list);
126 simix_global->process_list = NULL;
127 simix_global->process_to_destroy = NULL;
128 xbt_dict_free(&(simix_global->registered_functions));
129 xbt_dict_free(&(simix_global->host));
131 /* Let's free maestro now */
132 SIMIX_context_free(simix_global->maestro_process->context);
133 xbt_free(simix_global->maestro_process->running_ctx);
134 xbt_free(simix_global->maestro_process);
135 simix_global->maestro_process = NULL;
137 /* Restore the default exception setup */
138 __xbt_running_ctx_fetch = &__xbt_ex_ctx_default;
139 __xbt_ex_terminate = &__xbt_ex_terminate_default;
141 /* Finish context module and SURF */
142 SIMIX_context_mod_exit();
146 xbt_free(simix_global);
154 * \brief A clock (in second).
156 * \return Return the clock.
158 XBT_INLINE double SIMIX_get_clock(void)
161 return MC_process_clock_get(SIMIX_process_self());
163 return surf_get_clock();
172 surf_action_t action;
179 DEBUG1("New Schedule Round; size(queue)=%lu",
180 xbt_dynar_length(simix_global->process_to_run));
181 SIMIX_context_runall(simix_global->process_to_run);
182 while ((req = SIMIX_request_pop())) {
183 DEBUG1("Handling request %p", req);
184 SIMIX_request_pre(req, 0);
186 } while (xbt_dynar_length(simix_global->process_to_run));
188 time = surf_solve(SIMIX_timer_next());
190 /* Notify all the hosts that have failed */
191 /* FIXME: iterate through the list of failed host and mark each of them */
192 /* as failed. On each host, signal all the running processes with host_fail */
194 /* Handle any pending timer */
195 while (xbt_heap_size(simix_timers) > 0 && SIMIX_get_clock() >= SIMIX_timer_next()) {
196 //FIXME: make the timers being real callbacks
197 // (i.e. provide dispatchers that read and expand the args)
198 timer = xbt_heap_pop(simix_timers);
200 ((void (*)(void*))timer->func)(timer->args);
202 /* Wake up all process waiting for the action finish */
203 xbt_dynar_foreach(model_list, iter, model) {
204 for (set = model->states.failed_action_set;
206 set = (set == model->states.failed_action_set)
207 ? model->states.done_action_set
209 while ((action = xbt_swag_extract(set)))
210 SIMIX_request_post((smx_action_t) action->data);
213 } while (time != -1.0);
215 if (xbt_swag_size(simix_global->process_list) != 0) {
217 WARN0("Oops ! Deadlock or code not perfectly clean.");
218 SIMIX_display_process_status();
224 * \brief Set the date to execute a function
226 * Set the date to execute the function on the surf.
227 * \param date Date to execute function
228 * \param function Function to be executed
229 * \param arg Parameters of the function
232 XBT_INLINE void SIMIX_timer_set(double date, void *function, void *arg)
234 smx_timer_t timer = xbt_new0(s_smx_timer_t, 1);
237 timer->func = function;
239 xbt_heap_push(simix_timers, timer, date);
243 * \brief Registers a function to create a process.
245 * This function registers an user function to be called when a new process is created. The user function have to call the SIMIX_create_process function.
246 * \param function Create process function
249 XBT_INLINE void SIMIX_function_register_process_create(smx_creation_func_t
252 xbt_assert0((simix_global->create_process_function == NULL),
255 simix_global->create_process_function = function;
259 * \brief Registers a function to kill a process.
261 * This function registers an user function to be called when a new process is killed. The user function have to call the SIMIX_kill_process function.
262 * \param function Kill process function
265 XBT_INLINE void SIMIX_function_register_process_kill(void_f_pvoid_t
268 xbt_assert0((simix_global->kill_process_function == NULL),
271 simix_global->kill_process_function = function;
275 * \brief Registers a function to cleanup a process.
277 * This function registers an user function to be called when a new process ends properly.
278 * \param function cleanup process function
281 XBT_INLINE void SIMIX_function_register_process_cleanup(void_pfn_smxprocess_t
284 simix_global->cleanup_process_function = function;
288 void SIMIX_display_process_status(void)
290 if (simix_global->process_list == NULL) {
294 smx_process_t process = NULL;
295 int nbprocess = xbt_swag_size(simix_global->process_list);
297 INFO1("%d processes are still running, waiting for something.", nbprocess);
298 /* List the process and their state */
300 ("Legend of the following listing: \"<process> on <host>: <status>.\"");
301 xbt_swag_foreach(process, simix_global->process_list) {
303 if (process->waiting_action) {
305 const char* action_description = "unknown";
306 switch (process->waiting_action->type) {
308 case SIMIX_ACTION_EXECUTE:
309 action_description = "execution";
312 case SIMIX_ACTION_PARALLEL_EXECUTE:
313 action_description = "parallel execution";
316 case SIMIX_ACTION_COMMUNICATE:
317 action_description = "communication";
320 case SIMIX_ACTION_SLEEP:
321 action_description = "sleeping";
324 case SIMIX_ACTION_SYNCHRO:
325 action_description = "synchronization";
328 case SIMIX_ACTION_IO:
329 action_description = "I/O";
332 INFO2("Waiting for %s action %p to finish", action_description, process->waiting_action);