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;
24 typedef s_process_globals_t *process_globals_t;
27 static double parse_double(const char *string)
32 value = strtod(string, &endptr);
34 THROWF(unknown_error, 0, "%s is not a double", string);
38 #define ACT_DEBUG(...) \
39 if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose)) { \
40 char *NAME = xbt_str_join_array(action, " "); \
41 XBT_DEBUG(__VA_ARGS__); \
45 static void log_action(const char *const *action, double date)
47 if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose)) {
48 char *name = xbt_str_join_array(action, " ");
49 XBT_VERB("%s %f", name, date);
54 static void asynchronous_cleanup(void)
56 process_globals_t globals = (process_globals_t) MSG_process_get_data(MSG_process_self());
58 /* Destroy any isend which correspond to completed communications */
61 int pos_found = MSG_comm_testany(globals->isends);
62 if (pos_found == -1) /* none remaining */
64 xbt_dynar_remove_at(globals->isends, pos_found, &comm);
65 MSG_comm_destroy(comm);
70 static void action_send(const char *const *action)
73 const char *size_str = action[3];
74 double size = parse_double(size_str);
75 double clock = MSG_get_clock();
77 snprintf(to,249, "%s_%s", MSG_process_get_name(MSG_process_self()), action[2]);
79 ACT_DEBUG("Entering Send: %s (size: %g)", NAME, size);
83 MSG_task_send(MSG_task_create(to, 0, size, NULL), to);
86 log_action(action, MSG_get_clock() - clock);
87 asynchronous_cleanup();
90 static void action_Isend(const char *const *action)
93 const char *size = action[3];
94 double clock = MSG_get_clock();
95 process_globals_t globals = (process_globals_t) MSG_process_get_data(MSG_process_self());
97 snprintf(to,249, "%s_%s", MSG_process_get_name(MSG_process_self()), action[2]);
98 msg_comm_t comm = MSG_task_isend(MSG_task_create(to, 0, parse_double(size), NULL), to);
99 xbt_dynar_push(globals->isends, &comm);
101 XBT_DEBUG("Isend on %s", MSG_process_get_name(MSG_process_self()));
102 log_action(action, MSG_get_clock() - clock);
103 asynchronous_cleanup();
106 static void action_recv(const char *const *action)
108 char mailbox_name[250];
109 msg_task_t task = NULL;
110 double clock = MSG_get_clock();
112 snprintf(mailbox_name,249, "%s_%s", action[2], MSG_process_get_name(MSG_process_self()));
114 ACT_DEBUG("Receiving: %s", NAME);
115 msg_error_t res = MSG_task_receive(&task, mailbox_name);
116 log_action(action, MSG_get_clock() - clock);
119 MSG_task_destroy(task);
121 asynchronous_cleanup();
124 static void action_Irecv(const char *const *action)
127 double clock = MSG_get_clock();
128 process_globals_t globals = (process_globals_t) MSG_process_get_data(MSG_process_self());
130 XBT_DEBUG("Irecv on %s", MSG_process_get_name(MSG_process_self()));
132 snprintf(mailbox,249, "%s_%s", action[2], MSG_process_get_name(MSG_process_self()));
134 xbt_dynar_push(globals->tasks, &t);
135 msg_comm_t c = MSG_task_irecv(xbt_dynar_get_ptr(globals->tasks, xbt_dynar_length(globals->tasks) - 1), mailbox);
136 xbt_dynar_push(globals->irecvs, &c);
138 log_action(action, MSG_get_clock() - clock);
139 asynchronous_cleanup();
142 static void action_wait(const char *const *action)
144 msg_task_t task = NULL;
146 double clock = MSG_get_clock();
147 process_globals_t globals = (process_globals_t) MSG_process_get_data(MSG_process_self());
149 xbt_assert(xbt_dynar_length(globals->irecvs), "action wait not preceded by any irecv: %s",
150 xbt_str_join_array(action, " "));
152 ACT_DEBUG("Entering %s", NAME);
153 comm = xbt_dynar_pop_as(globals->irecvs, msg_comm_t);
154 MSG_comm_wait(comm, -1);
155 task = xbt_dynar_pop_as(globals->tasks, msg_task_t);
156 MSG_comm_destroy(comm);
157 MSG_task_destroy(task);
159 log_action(action, MSG_get_clock() - clock);
162 /* FIXME: that's a poor man's implementation: we should take the message exchanges into account */
163 static void action_barrier(const char *const *action)
165 static smx_mutex_t mutex = NULL;
166 static smx_cond_t cond = NULL;
167 static int processes_arrived_sofar = 0;
169 if (mutex == NULL) { // first arriving on the barrier
170 mutex = simcall_mutex_init();
171 cond = simcall_cond_init();
172 processes_arrived_sofar = 0;
174 ACT_DEBUG("Entering barrier: %s (%d already there)", NAME, processes_arrived_sofar);
176 simcall_mutex_lock(mutex);
177 processes_arrived_sofar++;
178 if (processes_arrived_sofar == communicator_size) {
179 simcall_cond_broadcast(cond);
180 simcall_mutex_unlock(mutex);
182 simcall_cond_wait(cond, mutex);
183 simcall_mutex_unlock(mutex);
186 ACT_DEBUG("Exiting barrier: %s", NAME);
188 processes_arrived_sofar--;
189 if (processes_arrived_sofar<=0) {
190 SIMIX_cond_unref(cond);
191 SIMIX_mutex_unref(mutex);
196 static void action_bcast(const char *const *action)
199 double comm_size = parse_double(action[2]);
200 msg_task_t task = NULL;
201 double clock = MSG_get_clock();
203 process_globals_t counters = (process_globals_t) MSG_process_get_data(MSG_process_self());
205 xbt_assert(communicator_size, "Size of Communicator is not defined, can't use collective operations");
207 const char * process_name = MSG_process_get_name(MSG_process_self());
209 char *bcast_identifier = bprintf("bcast_%d", counters->bcast_counter);
210 counters->bcast_counter++;
212 if (!strcmp(process_name, "p0")) {
213 XBT_DEBUG("%s: %s is the Root", bcast_identifier, process_name);
215 msg_comm_t *comms = xbt_new0(msg_comm_t, communicator_size - 1);
217 for (int i = 1; i < communicator_size; i++) {
218 snprintf(mailbox,79, "%s_p0_p%d", bcast_identifier, i);
219 comms[i - 1] = MSG_task_isend(MSG_task_create(mailbox, 0, comm_size, NULL), mailbox);
221 MSG_comm_waitall(comms, communicator_size - 1, -1);
222 for (int i = 1; i < communicator_size; i++)
223 MSG_comm_destroy(comms[i - 1]);
226 XBT_DEBUG("%s: all messages sent by %s have been received", bcast_identifier, process_name);
228 snprintf(mailbox,79, "%s_p0_%s", bcast_identifier, process_name);
229 MSG_task_receive(&task, mailbox);
230 MSG_task_destroy(task);
231 XBT_DEBUG("%s: %s has received", bcast_identifier, process_name);
234 log_action(action, MSG_get_clock() - clock);
235 xbt_free(bcast_identifier);
238 static void action_comm_size(const char *const *action)
240 const char *size = action[2];
241 double clock = MSG_get_clock();
243 communicator_size = parse_double(size);
244 log_action(action, MSG_get_clock() - clock);
247 static void action_compute(const char *const *action)
249 const char *amount = action[2];
250 msg_task_t task = MSG_task_create("task", parse_double(amount), 0, NULL);
251 double clock = MSG_get_clock();
253 ACT_DEBUG("Entering %s", NAME);
254 MSG_task_execute(task);
255 MSG_task_destroy(task);
256 log_action(action, MSG_get_clock() - clock);
259 static void action_init(const char *const *action)
261 XBT_DEBUG("Initialize the counters");
262 process_globals_t globals = (process_globals_t) calloc(1, sizeof(s_process_globals_t));
263 globals->isends = xbt_dynar_new(sizeof(msg_comm_t), NULL);
264 globals->irecvs = xbt_dynar_new(sizeof(msg_comm_t), NULL);
265 globals->tasks = xbt_dynar_new(sizeof(msg_task_t), NULL);
266 MSG_process_set_data(MSG_process_self(), globals);
269 static void action_finalize(const char *const *action)
271 process_globals_t globals = (process_globals_t) MSG_process_get_data(MSG_process_self());
273 asynchronous_cleanup();
274 xbt_dynar_free_container(&(globals->isends));
275 xbt_dynar_free_container(&(globals->irecvs));
276 xbt_dynar_free_container(&(globals->tasks));
281 int main(int argc, char *argv[])
283 msg_error_t res = MSG_OK;
285 /* Check the given arguments */
286 MSG_init(&argc, argv);
287 /* Explicit initialization of the action module is required now*/
291 "Usage: %s platform_file deployment_file [action_files]\n"
292 "\t# if all actions are in the same file\n"
293 "\tExample: %s msg_platform.xml msg_deployment.xml actions\n"
294 "\t# if actions are in separate files, specified in deployment\n"
295 "\tExample: %s msg_platform.xml msg_deployment.xml ",
296 argv[0],argv[0],argv[0]);
298 MSG_create_environment(argv[1]);
299 MSG_launch_application(argv[2]);
301 /* Action registration */
302 xbt_replay_action_register("init", action_init);
303 xbt_replay_action_register("finalize", action_finalize);
304 xbt_replay_action_register("comm_size", action_comm_size);
305 xbt_replay_action_register("send", action_send);
306 xbt_replay_action_register("Isend", action_Isend);
307 xbt_replay_action_register("recv", action_recv);
308 xbt_replay_action_register("Irecv", action_Irecv);
309 xbt_replay_action_register("wait", action_wait);
310 xbt_replay_action_register("barrier", action_barrier);
311 xbt_replay_action_register("bcast", action_bcast);
312 xbt_replay_action_register("compute", action_compute);
314 /* Actually do the simulation using MSG_action_trace_run */
315 res = MSG_action_trace_run(argv[3]); // it's ok to pass a NULL argument here
317 XBT_INFO("Simulation time %g", MSG_get_clock());
319 MSG_action_exit(); /* Explicit finalization of the action module */
321 return res != MSG_OK;