1 /* Copyright (c) 2007-2015. 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. */
7 #include "simgrid/msg.h"
9 XBT_LOG_NEW_DEFAULT_CATEGORY(msg_test, "Messages specific for this msg example");
11 /** @addtogroup MSG_examples
13 * - <b>gtnets</b> Simple ping-pong using GTNeTs instead of the SimGrid network models.
18 //keep a pointer to all surf running tasks.
21 double start_time, end_time, elapsed_time;
22 double gl_data_size[NTASKS];
23 msg_task_t gl_task_array[NTASKS];
24 const char *slavenames[NTASKS];
25 const char *masternames[NTASKS];
26 int gl_task_array_id = 0;
27 int count_finished = 0;
29 static int master(int argc, char *argv[])
31 char *slavename = NULL;
32 double task_comm_size = 0;
35 //unique id to control statistics
38 xbt_assert(argc == 4, "Strange number of arguments expected 3 got %d", argc - 1);
42 read = sscanf(argv[1], "%lg", &task_comm_size);
43 xbt_assert(read, "Invalid argument %s\n", argv[1]);
48 sprintf(id_alias, "flow_%d", id);
49 slavenames[id] = slavename;
50 TRACE_category(id_alias);
52 masternames[id] = MSG_host_get_name(MSG_host_self());
54 { /* Task creation. */
55 char sprintf_buffer[64] = "Task_0";
56 todo = MSG_task_create(sprintf_buffer, 0, task_comm_size, NULL);
57 MSG_task_set_category(todo, id_alias);
58 //keep track of running tasks
59 gl_task_array[id] = todo;
60 gl_data_size[id] = task_comm_size;
65 /* time measurement */
66 sprintf(id_alias, "%d", id);
67 start_time = MSG_get_clock();
68 MSG_task_send(todo, id_alias);
69 end_time = MSG_get_clock();
74 static int slave(int argc, char *argv[])
76 msg_task_t task = NULL;
77 #ifdef HAVE_LATENCY_BOUND_TRACKING
78 int limited_latency = 0;
83 xbt_assert(argc == 2, "Strange number of arguments expected 1 got %d", argc - 1);
85 int id = atoi(argv[1]);
86 sprintf(id_alias, "%d", id);
89 int a = MSG_task_receive(&(task), id_alias);
92 if(count_finished == 0){
96 xbt_assert(a == MSG_OK,"Hey?! What's up? Unexpected behavior");
98 elapsed_time = MSG_get_clock() - start_time;
103 for (id = 0; id < NTASKS; id++) {
104 if (gl_task_array[id] == NULL) continue;
105 if (gl_task_array[id] == task) {
106 #ifdef HAVE_LATENCY_BOUND_TRACKING
107 limited_latency = MSG_task_is_latency_bounded(gl_task_array[id]);
108 if (limited_latency) {
109 XBT_INFO("WARNING FLOW[%d] is limited by latency!!", id);
112 XBT_INFO ("===> Estimated Bw of FLOW[%d] : %f ; message from %s to %s with remaining : %f",
113 id, gl_data_size[id] / elapsed_time, masternames[id], slavenames[id], 0.0);
114 MSG_task_destroy(gl_task_array[id]);
115 gl_task_array[id]=NULL;
117 remaining = MSG_task_get_remaining_communication(gl_task_array[id]);
118 #ifdef HAVE_LATENCY_BOUND_TRACKING
119 limited_latency = MSG_task_is_latency_bounded(gl_task_array[id]);
121 if (limited_latency) {
122 XBT_INFO("WARNING FLOW[%d] is limited by latency!!", id);
125 XBT_INFO ("===> Estimated Bw of FLOW[%d] : %f ; message from %s to %s with remaining : %f",
126 id, (gl_data_size[id] - remaining) / elapsed_time, masternames[id], slavenames[id], remaining);
128 MSG_task_destroy(gl_task_array[id]);
129 gl_task_array[id]=NULL;
136 snprintf(mark, 100, "flow_%d_finished", trace_id);
137 TRACE_mark("endmark", mark);
139 if(bool_printed==2 && gl_task_array[trace_id]) MSG_task_destroy(gl_task_array[trace_id]);
144 int main(int argc, char *argv[])
146 msg_error_t res = MSG_OK;
149 MSG_init(&argc, argv);
150 xbt_assert(argc > 2, "Usage: %s platform_file deployment_file\n"
151 "\tExample: %s platform.xml deployment.xml\n", argv[0], argv[0]);
153 MSG_create_environment(argv[1]);
155 TRACE_declare_mark("endmark");
157 MSG_function_register("master", master);
158 MSG_function_register("slave", slave);
159 MSG_launch_application(argv[2]);
163 return res != MSG_OK;