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 */
14 XBT_LOG_EXTERNAL_CATEGORY(simix);
15 XBT_LOG_EXTERNAL_CATEGORY(simix_action);
16 XBT_LOG_EXTERNAL_CATEGORY(simix_deployment);
17 XBT_LOG_EXTERNAL_CATEGORY(simix_environment);
18 XBT_LOG_EXTERNAL_CATEGORY(simix_host);
19 XBT_LOG_EXTERNAL_CATEGORY(simix_process);
20 XBT_LOG_EXTERNAL_CATEGORY(simix_synchro);
21 XBT_LOG_EXTERNAL_CATEGORY(simix_context);
22 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(simix_kernel, simix,
23 "Logging specific to SIMIX (kernel)");
25 smx_global_t simix_global = NULL;
26 static xbt_heap_t simix_timers = NULL;
28 /* FIXME: Yeah, I'll do it in a portable maner one day [Mt] */
31 static void _XBT_CALL inthandler(int ignored)
33 INFO0("CTRL-C pressed. Displaying status and bailing out");
34 SIMIX_display_process_status();
38 /********************************* SIMIX **************************************/
40 XBT_INLINE double SIMIX_timer_next(void)
42 return xbt_heap_size(simix_timers) > 0 ? xbt_heap_maxkey(simix_timers) : -1.0;
46 * \brief Initialize SIMIX internal data.
51 void SIMIX_global_init(int *argc, char **argv)
56 /* Connect our log channels: that must be done manually under windows */
57 XBT_LOG_CONNECT(simix_action, simix);
58 XBT_LOG_CONNECT(simix_deployment, simix);
59 XBT_LOG_CONNECT(simix_environment, simix);
60 XBT_LOG_CONNECT(simix_host, simix);
61 XBT_LOG_CONNECT(simix_kernel, simix);
62 XBT_LOG_CONNECT(simix_process, simix);
63 XBT_LOG_CONNECT(simix_synchro, simix);
64 XBT_LOG_CONNECT(simix_context, simix);
66 simix_global = xbt_new0(s_smx_global_t, 1);
68 simix_global->host = xbt_dict_new();
69 simix_global->process_to_run = xbt_dynar_new(sizeof(void *), NULL);
70 simix_global->process_list =
71 xbt_swag_new(xbt_swag_offset(proc, process_hookup));
72 simix_global->process_to_destroy =
73 xbt_swag_new(xbt_swag_offset(proc, destroy_hookup));
75 simix_global->maestro_process = NULL;
76 simix_global->registered_functions = xbt_dict_new();
78 simix_global->create_process_function = NULL;
79 simix_global->kill_process_function = NULL;
80 simix_global->cleanup_process_function = SIMIX_process_cleanup;
82 surf_init(argc, argv); /* Initialize SURF structures */
83 SIMIX_context_mod_init();
84 SIMIX_create_maestro_process();
86 /* context exception handlers */
87 __xbt_running_ctx_fetch = SIMIX_process_get_running_context;
88 __xbt_ex_terminate = SIMIX_process_exception_terminate;
90 /* Initialize request mechanism */
93 /* Initialize the SIMIX network module */
96 /* Prepare to display some more info when dying on Ctrl-C pressing */
97 signal(SIGINT, inthandler);
100 simix_timers = xbt_heap_new(8, &free);
105 * \brief Clean the SIMIX simulation
107 * This functions remove the memory used by SIMIX
109 void SIMIX_clean(void)
111 /* Kill everyone (except maestro) */
112 SIMIX_process_killall();
114 /* Exit the SIMIX network module */
115 SIMIX_network_exit();
117 /* Exit request mechanism */
118 SIMIX_request_destroy();
120 xbt_heap_free(simix_timers);
121 /* Free the remaining data structures */
122 xbt_dynar_free(&simix_global->process_to_run);
123 xbt_swag_free(simix_global->process_to_destroy);
124 xbt_swag_free(simix_global->process_list);
125 simix_global->process_list = NULL;
126 simix_global->process_to_destroy = NULL;
127 xbt_dict_free(&(simix_global->registered_functions));
128 xbt_dict_free(&(simix_global->host));
130 /* Let's free maestro now */
131 SIMIX_context_free(simix_global->maestro_process->context);
132 xbt_free(simix_global->maestro_process->running_ctx);
133 xbt_free(simix_global->maestro_process);
134 simix_global->maestro_process = NULL;
136 /* Restore the default exception setup */
137 __xbt_running_ctx_fetch = &__xbt_ex_ctx_default;
138 __xbt_ex_terminate = &__xbt_ex_terminate_default;
140 /* Finish context module and SURF */
141 SIMIX_context_mod_exit();
145 xbt_free(simix_global);
153 * \brief A clock (in second).
155 * \return Return the clock.
157 XBT_INLINE double SIMIX_get_clock(void)
159 return surf_get_clock();
167 surf_action_t action;
174 DEBUG1("New Schedule Round; size(queue)=%lu",
175 xbt_dynar_length(simix_global->process_to_run));
176 SIMIX_context_runall(simix_global->process_to_run);
177 while ((req = SIMIX_request_pop())) {
178 DEBUG1("Handling request %p", req);
179 SIMIX_request_pre(req, 0);
181 } while (xbt_dynar_length(simix_global->process_to_run));
183 time = surf_solve(SIMIX_timer_next());
185 /* Notify all the hosts that have failed */
186 /* FIXME: iterate through the list of failed host and mark each of them */
187 /* as failed. On each host, signal all the running processes with host_fail */
189 /* Handle any pending timer */
190 while (xbt_heap_size(simix_timers) > 0 && SIMIX_get_clock() >= SIMIX_timer_next()) {
191 //FIXME: make the timers being real callbacks
192 // (i.e. provide dispatchers that read and expand the args)
193 timer = xbt_heap_pop(simix_timers);
195 ((void (*)(void*))timer->func)(timer->args);
197 /* Wake up all process waiting for the action finish */
198 xbt_dynar_foreach(model_list, iter, model) {
199 for (set = model->states.failed_action_set;
201 set = (set == model->states.failed_action_set)
202 ? model->states.done_action_set
204 while ((action = xbt_swag_extract(set)))
205 SIMIX_request_post((smx_action_t) action->data);
208 } while (time != -1.0);
210 if (xbt_swag_size(simix_global->process_list) != 0) {
212 WARN0("Oops ! Deadlock or code not perfectly clean.");
213 SIMIX_display_process_status();
219 * \brief Set the date to execute a function
221 * Set the date to execute the function on the surf.
222 * \param date Date to execute function
223 * \param function Function to be executed
224 * \param arg Parameters of the function
227 XBT_INLINE void SIMIX_timer_set(double date, void *function, void *arg)
229 smx_timer_t timer = xbt_new0(s_smx_timer_t, 1);
232 timer->func = function;
234 xbt_heap_push(simix_timers, timer, date);
238 * \brief Registers a function to create a process.
240 * 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.
241 * \param function Create process function
244 XBT_INLINE void SIMIX_function_register_process_create(smx_creation_func_t
247 xbt_assert0((simix_global->create_process_function == NULL),
250 simix_global->create_process_function = function;
254 * \brief Registers a function to kill a process.
256 * 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.
257 * \param function Kill process function
260 XBT_INLINE void SIMIX_function_register_process_kill(void_f_pvoid_t
263 xbt_assert0((simix_global->kill_process_function == NULL),
266 simix_global->kill_process_function = function;
270 * \brief Registers a function to cleanup a process.
272 * This function registers an user function to be called when a new process ends properly.
273 * \param function cleanup process function
276 XBT_INLINE void SIMIX_function_register_process_cleanup(void_pfn_smxprocess_t
279 simix_global->cleanup_process_function = function;
283 void SIMIX_display_process_status(void)
285 if (simix_global->process_list == NULL) {
289 smx_process_t process = NULL;
290 int nbprocess = xbt_swag_size(simix_global->process_list);
292 INFO1("%d processes are still running, waiting for something.", nbprocess);
293 /* List the process and their state */
295 ("Legend of the following listing: \"<process> on <host>: <status>.\"");
296 xbt_swag_foreach(process, simix_global->process_list) {
298 if (process->waiting_action) {
300 const char* action_description = "unknown";
301 switch (process->waiting_action->type) {
303 case SIMIX_ACTION_EXECUTE:
304 action_description = "execution";
307 case SIMIX_ACTION_PARALLEL_EXECUTE:
308 action_description = "parallel execution";
311 case SIMIX_ACTION_COMMUNICATE:
312 action_description = "communication";
315 case SIMIX_ACTION_SLEEP:
316 action_description = "sleeping";
319 case SIMIX_ACTION_SYNCHRO:
320 action_description = "synchronization";
323 case SIMIX_ACTION_IO:
324 action_description = "I/O";
327 INFO2("Waiting for %s action %p to finish", action_description, process->waiting_action);