deport three other MSG examples

[simgrid.git] / teshsuite / msg / app-token-ring / app-token-ring.c

diff --git a/teshsuite/msg/app-token-ring/app-token-ring.c b/teshsuite/msg/app-token-ring/app-token-ring.c
new file mode 100644 (file)
index 0000000..c5d7118
--- /dev/null
+++ b/teshsuite/msg/app-token-ring/app-token-ring.c
@@ -0,0 +1,70 @@
+/* Copyright (c) 2008-2016. The SimGrid Team. All rights reserved.          */
+
+/* This program is free software; you can redistribute it and/or modify it
+ * under the terms of the license (GNU LGPL) which comes with this package. */
+
+#include "simgrid/msg.h"
+
+XBT_LOG_NEW_DEFAULT_CATEGORY(msg_app_token_ring, "Messages specific for this msg example");
+
+/* Main function of all processes used in this example */
+static int relay_runner(int argc, char* argv[])
+{
+  xbt_assert(argc == 0, "The relay_runner function does not accept any parameter from the XML deployment file");
+  int rank = xbt_str_parse_int(MSG_process_get_name(MSG_process_self()),
+                               "Any process of this example must have a numerical name, not %s");
+  char mailbox[256];
+
+  if (rank == 0) {
+    /* The root process (rank 0) first sends the token then waits to receive it back */
+    snprintf(mailbox, 255, "%d", rank + 1);
+    unsigned int task_comm_size = 1000000; /* The token is 1MB long*/
+    msg_task_t task             = MSG_task_create("Token", 0, task_comm_size, NULL);
+    XBT_INFO("Host \"%d\" send '%s' to Host \"%s\"", rank, task->name, mailbox);
+    MSG_task_send(task, mailbox);
+    task    = NULL;
+    int res = MSG_task_receive(&task, MSG_process_get_name(MSG_process_self()));
+    xbt_assert(res == MSG_OK, "MSG_task_get failed");
+    XBT_INFO("Host \"%d\" received \"%s\"", rank, MSG_task_get_name(task));
+    MSG_task_destroy(task);
+
+  } else {
+    /* The others processes receive from their left neighbor (rank-1) and send to their right neighbor (rank+1) */
+    msg_task_t task = NULL;
+    int res         = MSG_task_receive(&task, MSG_process_get_name(MSG_process_self()));
+    xbt_assert(res == MSG_OK, "MSG_task_get failed");
+    XBT_INFO("Host \"%d\" received \"%s\"", rank, MSG_task_get_name(task));
+
+    if (rank + 1 == MSG_get_host_number())
+      /* But the last process, which sends the token back to rank 0 */
+      snprintf(mailbox, 255, "0");
+    else
+      snprintf(mailbox, 255, "%d", rank + 1);
+    XBT_INFO("Host \"%d\" send '%s' to Host \"%s\"", rank, task->name, mailbox);
+    MSG_task_send(task, mailbox);
+  }
+  return 0;
+}
+
+int main(int argc, char* argv[])
+{
+  MSG_init(&argc, argv);
+  xbt_assert(argc > 1, "Usage: %s platform.xml\n", argv[0]);
+  MSG_create_environment(argv[1]); /* - Load the platform description */
+  xbt_dynar_t hosts = MSG_hosts_as_dynar();
+
+  XBT_INFO("Number of hosts '%d'", MSG_get_host_number());
+  unsigned int i;
+  msg_host_t h;
+  xbt_dynar_foreach (hosts, i,
+                     h) { /* - Give a unique rank to each host and create a @ref relay_runner process on each */
+    char* name_host = bprintf("%u", i);
+    MSG_process_create(name_host, relay_runner, NULL, h);
+    free(name_host);
+  }
+  xbt_dynar_free(&hosts);
+
+  int res = MSG_main(); /* - Run the simulation */
+  XBT_INFO("Simulation time %g", MSG_get_clock());
+  return res != MSG_OK;
+}