1 /* Copyright (c) 2009-2016. The SimGrid Team. All rights reserved. */
3 /* This program is free software; you can redistribute it and/or modify it
4 * under the terms of the license (GNU LGPL) which comes with this package. */
6 #include "simgrid/msg.h"
7 #include "simgrid/simix.h" /* semaphores for the barrier */
8 #include <xbt/replay.h>
10 XBT_LOG_NEW_DEFAULT_CATEGORY(actions, "Messages specific for this msg example");
11 int communicator_size = 0;
13 static void action_Isend(const char *const *action);
16 int last_Irecv_sender_id;
18 xbt_dynar_t isends; /* of msg_comm_t */
19 /* Used to implement irecv+wait */
20 xbt_dynar_t irecvs; /* of msg_comm_t */
21 xbt_dynar_t tasks; /* of msg_task_t */
22 } s_process_globals_t, *process_globals_t;
25 static double parse_double(const char *string)
30 value = strtod(string, &endptr);
32 THROWF(unknown_error, 0, "%s is not a double", string);
36 #define ACT_DEBUG(...) \
37 if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose)) { \
38 char *NAME = xbt_str_join_array(action, " "); \
39 XBT_DEBUG(__VA_ARGS__); \
43 static void log_action(const char *const *action, double date)
45 if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose)) {
46 char *name = xbt_str_join_array(action, " ");
47 XBT_VERB("%s %f", name, date);
52 static void asynchronous_cleanup(void)
54 process_globals_t globals = (process_globals_t) MSG_process_get_data(MSG_process_self());
56 /* Destroy any isend which correspond to completed communications */
59 while ((found = MSG_comm_testany(globals->isends)) != -1) {
60 xbt_dynar_remove_at(globals->isends, found, &comm);
61 MSG_comm_destroy(comm);
66 static void action_send(const char *const *action)
69 const char *size_str = action[3];
70 double size = parse_double(size_str);
71 double clock = MSG_get_clock();
73 snprintf(to,249, "%s_%s", MSG_process_get_name(MSG_process_self()), action[2]);
75 ACT_DEBUG("Entering Send: %s (size: %g)", NAME, size);
79 MSG_task_send(MSG_task_create(to, 0, size, NULL), to);
82 log_action(action, MSG_get_clock() - clock);
83 asynchronous_cleanup();
86 static void action_Isend(const char *const *action)
89 const char *size = action[3];
90 double clock = MSG_get_clock();
91 process_globals_t globals = (process_globals_t) MSG_process_get_data(MSG_process_self());
93 snprintf(to,249, "%s_%s", MSG_process_get_name(MSG_process_self()), action[2]);
94 msg_comm_t comm = MSG_task_isend(MSG_task_create(to, 0, parse_double(size), NULL), to);
95 xbt_dynar_push(globals->isends, &comm);
97 XBT_DEBUG("Isend on %s", MSG_process_get_name(MSG_process_self()));
98 log_action(action, MSG_get_clock() - clock);
99 asynchronous_cleanup();
102 static void action_recv(const char *const *action)
104 char mailbox_name[250];
105 msg_task_t task = NULL;
106 double clock = MSG_get_clock();
108 snprintf(mailbox_name,249, "%s_%s", action[2], MSG_process_get_name(MSG_process_self()));
110 ACT_DEBUG("Receiving: %s", NAME);
111 msg_error_t res = MSG_task_receive(&task, mailbox_name);
112 log_action(action, MSG_get_clock() - clock);
115 MSG_task_destroy(task);
117 asynchronous_cleanup();
120 static void action_Irecv(const char *const *action)
123 double clock = MSG_get_clock();
124 process_globals_t globals = (process_globals_t) MSG_process_get_data(MSG_process_self());
126 XBT_DEBUG("Irecv on %s", MSG_process_get_name(MSG_process_self()));
128 snprintf(mailbox,249, "%s_%s", action[2], MSG_process_get_name(MSG_process_self()));
130 xbt_dynar_push(globals->tasks, &t);
131 msg_comm_t c = MSG_task_irecv(xbt_dynar_get_ptr(globals->tasks, xbt_dynar_length(globals->tasks) - 1), mailbox);
132 xbt_dynar_push(globals->irecvs, &c);
134 log_action(action, MSG_get_clock() - clock);
135 asynchronous_cleanup();
138 static void action_wait(const char *const *action)
140 msg_task_t task = NULL;
142 double clock = MSG_get_clock();
143 process_globals_t globals = (process_globals_t) MSG_process_get_data(MSG_process_self());
145 xbt_assert(xbt_dynar_length(globals->irecvs), "action wait not preceded by any irecv: %s",
146 xbt_str_join_array(action, " "));
148 ACT_DEBUG("Entering %s", NAME);
149 comm = xbt_dynar_pop_as(globals->irecvs, msg_comm_t);
150 MSG_comm_wait(comm, -1);
151 task = xbt_dynar_pop_as(globals->tasks, msg_task_t);
152 MSG_comm_destroy(comm);
153 MSG_task_destroy(task);
155 log_action(action, MSG_get_clock() - clock);
158 /* FIXME: that's a poor man's implementation: we should take the message exchanges into account */
159 static void action_barrier(const char *const *action)
161 static smx_mutex_t mutex = NULL;
162 static smx_cond_t cond = NULL;
163 static int processes_arrived_sofar = 0;
165 if (mutex == NULL) { // first arriving on the barrier
166 mutex = simcall_mutex_init();
167 cond = simcall_cond_init();
168 processes_arrived_sofar = 0;
170 ACT_DEBUG("Entering barrier: %s (%d already there)", NAME, processes_arrived_sofar);
172 simcall_mutex_lock(mutex);
173 if (++processes_arrived_sofar == communicator_size) {
174 simcall_cond_broadcast(cond);
175 simcall_mutex_unlock(mutex);
177 simcall_cond_wait(cond, mutex);
178 simcall_mutex_unlock(mutex);
181 ACT_DEBUG("Exiting barrier: %s", NAME);
183 processes_arrived_sofar--;
184 if (processes_arrived_sofar<=0) {
185 SIMIX_cond_unref(cond);
186 SIMIX_mutex_unref(mutex);
191 static void action_bcast(const char *const *action)
194 double comm_size = parse_double(action[2]);
195 msg_task_t task = NULL;
196 double clock = MSG_get_clock();
198 process_globals_t counters = (process_globals_t) MSG_process_get_data(MSG_process_self());
200 xbt_assert(communicator_size, "Size of Communicator is not defined, can't use collective operations");
202 const char * process_name = MSG_process_get_name(MSG_process_self());
204 char *bcast_identifier = bprintf("bcast_%d", counters->bcast_counter++);
206 if (!strcmp(process_name, "p0")) {
207 XBT_DEBUG("%s: %s is the Root", bcast_identifier, process_name);
209 msg_comm_t *comms = xbt_new0(msg_comm_t, communicator_size - 1);
211 for (int i = 1; i < communicator_size; i++) {
212 snprintf(mailbox,79, "%s_p0_p%d", bcast_identifier, i);
213 comms[i - 1] = MSG_task_isend(MSG_task_create(mailbox, 0, comm_size, NULL), mailbox);
215 MSG_comm_waitall(comms, communicator_size - 1, -1);
216 for (int i = 1; i < communicator_size; i++)
217 MSG_comm_destroy(comms[i - 1]);
220 XBT_DEBUG("%s: all messages sent by %s have been received", bcast_identifier, process_name);
222 snprintf(mailbox,79, "%s_p0_%s", bcast_identifier, process_name);
223 MSG_task_receive(&task, mailbox);
224 MSG_task_destroy(task);
225 XBT_DEBUG("%s: %s has received", bcast_identifier, process_name);
228 log_action(action, MSG_get_clock() - clock);
229 xbt_free(bcast_identifier);
232 static void action_comm_size(const char *const *action)
234 const char *size = action[2];
235 double clock = MSG_get_clock();
237 communicator_size = parse_double(size);
238 log_action(action, MSG_get_clock() - clock);
241 static void action_compute(const char *const *action)
243 const char *amount = action[2];
244 msg_task_t task = MSG_task_create("task", parse_double(amount), 0, NULL);
245 double clock = MSG_get_clock();
247 ACT_DEBUG("Entering %s", NAME);
248 MSG_task_execute(task);
249 MSG_task_destroy(task);
250 log_action(action, MSG_get_clock() - clock);
253 static void action_init(const char *const *action)
255 XBT_DEBUG("Initialize the counters");
256 process_globals_t globals = (process_globals_t) calloc(1, sizeof(s_process_globals_t));
257 globals->isends = xbt_dynar_new(sizeof(msg_comm_t), NULL);
258 globals->irecvs = xbt_dynar_new(sizeof(msg_comm_t), NULL);
259 globals->tasks = xbt_dynar_new(sizeof(msg_task_t), NULL);
260 MSG_process_set_data(MSG_process_self(), globals);
263 static void action_finalize(const char *const *action)
265 process_globals_t globals = (process_globals_t) MSG_process_get_data(MSG_process_self());
267 asynchronous_cleanup();
268 xbt_dynar_free_container(&(globals->isends));
269 xbt_dynar_free_container(&(globals->irecvs));
270 xbt_dynar_free_container(&(globals->tasks));
275 int main(int argc, char *argv[])
277 msg_error_t res = MSG_OK;
279 /* Check the given arguments */
280 MSG_init(&argc, argv);
281 /* Explicit initialization of the action module is required now*/
285 "Usage: %s platform_file deployment_file [action_files]\n"
286 "\t# if all actions are in the same file\n"
287 "\tExample: %s msg_platform.xml msg_deployment.xml actions\n"
288 "\t# if actions are in separate files, specified in deployment\n"
289 "\tExample: %s msg_platform.xml msg_deployment.xml ",
290 argv[0],argv[0],argv[0]);
292 MSG_create_environment(argv[1]);
293 MSG_launch_application(argv[2]);
295 /* Action registration */
296 xbt_replay_action_register("init", action_init);
297 xbt_replay_action_register("finalize", action_finalize);
298 xbt_replay_action_register("comm_size", action_comm_size);
299 xbt_replay_action_register("send", action_send);
300 xbt_replay_action_register("Isend", action_Isend);
301 xbt_replay_action_register("recv", action_recv);
302 xbt_replay_action_register("Irecv", action_Irecv);
303 xbt_replay_action_register("wait", action_wait);
304 xbt_replay_action_register("barrier", action_barrier);
305 xbt_replay_action_register("bcast", action_bcast);
306 xbt_replay_action_register("compute", action_compute);
308 /* Actually do the simulation using MSG_action_trace_run */
309 res = MSG_action_trace_run(argv[3]); // it's ok to pass a NULL argument here
311 XBT_INFO("Simulation time %g", MSG_get_clock());
313 MSG_action_exit(); /* Explicit finalization of the action module */
315 return res != MSG_OK;