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 static void* SIMIX_action_mallocator_new_f(void);
30 static void SIMIX_action_mallocator_free_f(void* action);
31 static void SIMIX_action_mallocator_reset_f(void* action);
33 extern void smx_ctx_raw_new_sr(void);
35 /* FIXME: Yeah, I'll do it in a portable maner one day [Mt] */
38 static void _XBT_CALL inthandler(int ignored)
40 XBT_INFO("CTRL-C pressed. Displaying status and bailing out");
41 SIMIX_display_process_status();
45 /********************************* SIMIX **************************************/
47 XBT_INLINE double SIMIX_timer_next(void)
49 return xbt_heap_size(simix_timers) > 0 ? xbt_heap_maxkey(simix_timers) : -1.0;
53 * \brief Initialize SIMIX internal data.
58 void SIMIX_global_init(int *argc, char **argv)
63 /* Connect our log channels: that must be done manually under windows */
64 XBT_LOG_CONNECT(simix_action, simix);
65 XBT_LOG_CONNECT(simix_deployment, simix);
66 XBT_LOG_CONNECT(simix_environment, simix);
67 XBT_LOG_CONNECT(simix_host, simix);
68 XBT_LOG_CONNECT(simix_kernel, simix);
69 XBT_LOG_CONNECT(simix_process, simix);
70 XBT_LOG_CONNECT(simix_synchro, simix);
71 XBT_LOG_CONNECT(simix_context, simix);
73 simix_global = xbt_new0(s_smx_global_t, 1);
75 simix_global->host = xbt_dict_new();
76 simix_global->process_to_run = xbt_dynar_new(sizeof(void *), NULL);
77 simix_global->process_list =
78 xbt_swag_new(xbt_swag_offset(proc, process_hookup));
79 simix_global->process_to_destroy =
80 xbt_swag_new(xbt_swag_offset(proc, destroy_hookup));
82 simix_global->maestro_process = NULL;
83 simix_global->registered_functions = xbt_dict_new();
85 simix_global->create_process_function = SIMIX_process_create;
86 simix_global->kill_process_function = SIMIX_process_kill;
87 simix_global->cleanup_process_function = SIMIX_process_cleanup;
88 simix_global->action_mallocator = xbt_mallocator_new(65536,
89 SIMIX_action_mallocator_new_f, SIMIX_action_mallocator_free_f,
90 SIMIX_action_mallocator_reset_f);
92 surf_init(argc, argv); /* Initialize SURF structures */
93 SIMIX_context_mod_init();
94 SIMIX_create_maestro_process();
96 /* context exception handlers */
97 __xbt_running_ctx_fetch = SIMIX_process_get_running_context;
98 __xbt_ex_terminate = SIMIX_process_exception_terminate;
100 /* Initialize request mechanism */
101 SIMIX_request_init();
103 /* Initialize the SIMIX network module */
104 SIMIX_network_init();
106 /* Prepare to display some more info when dying on Ctrl-C pressing */
107 signal(SIGINT, inthandler);
110 simix_timers = xbt_heap_new(8, &free);
115 * \brief Clean the SIMIX simulation
117 * This functions remove the memory used by SIMIX
119 void SIMIX_clean(void)
122 smx_ctx_raw_new_sr();
125 /* Kill everyone (except maestro) */
126 SIMIX_process_killall(simix_global->maestro_process);
128 /* Exit the SIMIX network module */
129 SIMIX_network_exit();
131 /* Exit request mechanism */
132 SIMIX_request_destroy();
134 xbt_heap_free(simix_timers);
135 /* Free the remaining data structures */
136 xbt_dynar_free(&simix_global->process_to_run);
137 xbt_swag_free(simix_global->process_to_destroy);
138 xbt_swag_free(simix_global->process_list);
139 simix_global->process_list = NULL;
140 simix_global->process_to_destroy = NULL;
141 xbt_dict_free(&(simix_global->registered_functions));
142 xbt_dict_free(&(simix_global->host));
144 /* Let's free maestro now */
145 SIMIX_context_free(simix_global->maestro_process->context);
146 xbt_free(simix_global->maestro_process->running_ctx);
147 xbt_free(simix_global->maestro_process);
148 simix_global->maestro_process = NULL;
150 /* Restore the default exception setup */
151 __xbt_running_ctx_fetch = &__xbt_ex_ctx_default;
152 __xbt_ex_terminate = &__xbt_ex_terminate_default;
154 /* Finish context module and SURF */
155 SIMIX_context_mod_exit();
159 xbt_mallocator_free(simix_global->action_mallocator);
160 xbt_free(simix_global);
168 * \brief A clock (in second).
170 * \return Return the clock.
172 XBT_INLINE double SIMIX_get_clock(void)
175 return MC_process_clock_get(SIMIX_process_self());
177 return surf_get_clock();
186 surf_action_t action;
192 XBT_DEBUG("New Schedule Round; size(queue)=%lu",
193 xbt_dynar_length(simix_global->process_to_run));
195 smx_ctx_raw_new_sr();
198 XBT_DEBUG("New Sub-Schedule Round; size(queue)=%lu",
199 xbt_dynar_length(simix_global->process_to_run));
200 SIMIX_context_runall(simix_global->process_to_run);
201 while ((req = SIMIX_request_pop())) {
202 XBT_DEBUG("Handling request %p", req);
203 SIMIX_request_pre(req, 0);
205 } while (xbt_dynar_length(simix_global->process_to_run));
207 time = surf_solve(SIMIX_timer_next());
209 /* Notify all the hosts that have failed */
210 /* FIXME: iterate through the list of failed host and mark each of them */
211 /* as failed. On each host, signal all the running processes with host_fail */
213 /* Handle any pending timer */
214 while (xbt_heap_size(simix_timers) > 0 && SIMIX_get_clock() >= SIMIX_timer_next()) {
215 //FIXME: make the timers being real callbacks
216 // (i.e. provide dispatchers that read and expand the args)
217 timer = xbt_heap_pop(simix_timers);
219 ((void (*)(void*))timer->func)(timer->args);
221 /* Wake up all process waiting for the action finish */
222 xbt_dynar_foreach(model_list, iter, model) {
223 for (set = model->states.failed_action_set;
225 set = (set == model->states.failed_action_set)
226 ? model->states.done_action_set
228 while ((action = xbt_swag_extract(set)))
229 SIMIX_request_post((smx_action_t) action->data);
232 } while (time != -1.0);
234 if (xbt_swag_size(simix_global->process_list) != 0) {
236 XBT_WARN("Oops ! Deadlock or code not perfectly clean.");
237 SIMIX_display_process_status();
243 * \brief Set the date to execute a function
245 * Set the date to execute the function on the surf.
246 * \param date Date to execute function
247 * \param function Function to be executed
248 * \param arg Parameters of the function
251 XBT_INLINE void SIMIX_timer_set(double date, void *function, void *arg)
253 smx_timer_t timer = xbt_new0(s_smx_timer_t, 1);
256 timer->func = function;
258 xbt_heap_push(simix_timers, timer, date);
262 * \brief Registers a function to create a process.
264 * This function registers a function to be called
265 * when a new process is created. The function has
266 * to call SIMIX_process_create().
267 * \param function create process function
269 XBT_INLINE void SIMIX_function_register_process_create(smx_creation_func_t
272 simix_global->create_process_function = function;
276 * \brief Registers a function to kill a process.
278 * This function registers a function to be called when a
279 * process is killed. The function has to call the SIMIX_process_kill().
281 * \param function Kill process function
283 XBT_INLINE void SIMIX_function_register_process_kill(void_pfn_smxprocess_t
286 simix_global->kill_process_function = function;
290 * \brief Registers a function to cleanup a process.
292 * This function registers a user function to be called when
293 * a process ends properly.
295 * \param function cleanup process function
297 XBT_INLINE void SIMIX_function_register_process_cleanup(void_pfn_smxprocess_t
300 simix_global->cleanup_process_function = function;
304 void SIMIX_display_process_status(void)
306 if (simix_global->process_list == NULL) {
310 smx_process_t process = NULL;
311 int nbprocess = xbt_swag_size(simix_global->process_list);
313 XBT_INFO("%d processes are still running, waiting for something.", nbprocess);
314 /* List the process and their state */
316 ("Legend of the following listing: \"<process> on <host>: <status>.\"");
317 xbt_swag_foreach(process, simix_global->process_list) {
319 if (process->waiting_action) {
321 const char* action_description = "unknown";
322 switch (process->waiting_action->type) {
324 case SIMIX_ACTION_EXECUTE:
325 action_description = "execution";
328 case SIMIX_ACTION_PARALLEL_EXECUTE:
329 action_description = "parallel execution";
332 case SIMIX_ACTION_COMMUNICATE:
333 action_description = "communication";
336 case SIMIX_ACTION_SLEEP:
337 action_description = "sleeping";
340 case SIMIX_ACTION_SYNCHRO:
341 action_description = "synchronization";
344 case SIMIX_ACTION_IO:
345 action_description = "I/O";
348 XBT_INFO("Waiting for %s action %p to finish", action_description, process->waiting_action);
353 static void* SIMIX_action_mallocator_new_f(void) {
354 smx_action_t action = xbt_new(s_smx_action_t, 1);
355 action->request_list = xbt_fifo_new();
359 static void SIMIX_action_mallocator_free_f(void* action) {
360 xbt_fifo_free(((smx_action_t) action)->request_list);
364 static void SIMIX_action_mallocator_reset_f(void* action) {
366 // we also recycle the request list
367 xbt_fifo_t fifo = ((smx_action_t) action)->request_list;
368 xbt_fifo_reset(fifo);
369 memset(action, 0, sizeof(s_smx_action_t));
370 ((smx_action_t) action)->request_list = fifo;