+/* Copyright (c) 2012-2014. 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. */
+
/***************** Centralized Mutual Exclusion Algorithm *********************/
/* This example implements a centralized mutual exclusion algorithm. */
/* Bug : CS requests of client 1 not satisfied */
int CS_used = 0;
msg_task_t task = NULL, answer = NULL;
xbt_dynar_t requests = xbt_dynar_new(sizeof(char *), NULL);
+ char *req;
while(1){
MSG_task_receive(&task, "coordinator");
const char *kind = MSG_task_get_name(task);
if (!strcmp(kind, "request")) {
- char *req = MSG_task_get_data(task);
+ req = MSG_task_get_data(task);
if (CS_used) {
XBT_INFO("CS already used. Queue the request.");
xbt_dynar_push(requests, &req);
} else {
if (!xbt_dynar_is_empty(requests)) {
XBT_INFO("CS release. Grant to queued requests (queue size: %lu)", xbt_dynar_length(requests));
- char *req;
- xbt_dynar_pop(requests, &req);
+ xbt_dynar_shift(requests, &req);
if(strcmp(req, "1") != 0){
MSG_task_send(MSG_task_create("grant", 0, 1000, NULL), req);
}else{
MSG_task_destroy(task);
task = NULL;
kind = NULL;
+ req = NULL;
}
return 0;