/* StarPU --- Runtime system for heterogeneous multicore architectures.
 *
 * Copyright (C) 2010,2011 University of Bordeaux
 *
 * StarPU is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either version 2.1 of the License, or (at
 * your option) any later version.
 *
 * StarPU is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * See the GNU Lesser General Public License in COPYING.LGPL for more details.
 */

#include "socl.h"

command_list command_list_cons(cl_command cmd, command_list ls) {
   command_list e = malloc(sizeof(struct command_list_t));
   e->cmd = cmd;
   e->next = ls;
   e->prev = NULL;
   if (ls != NULL)
      ls->prev = e;
   return e;
}

/**
 * Remove every occurence of cmd in the list l
 */
command_list command_list_remove(command_list l, cl_command cmd) {
   command_list e = l;
   while (e != NULL) {
      if (e->cmd == cmd) {
         if (e->prev != NULL) e->prev->next = e->next;
         if (e->next != NULL) e->next->prev = e->prev;
         command_list old = e;
         if (l == old) { // list head has been removed
            l = old->next;
         }
         e = old->next;
         free(old);
      }
      else {
         e = e->next;
      }
   }
   return l;
}