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  1. /*
  2.  * Copyright (c) 2009 Lukas Mejdrech
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup net
  30.  *  @{
  31.  */
  32.  
  33. /** @file
  34.  *  Character string to module map.
  35.  */
  36.  
  37. #ifndef __NET_MODULES_MAP_H__
  38. #define __NET_MODULES_MAP_H__
  39.  
  40. #include <task.h>
  41.  
  42. #include <ipc/services.h>
  43.  
  44. #include "../modules.h"
  45.  
  46. #include "generic_char_map.h"
  47.  
  48. /** Type definition of the module structure.
  49.  *  @see module_struct
  50.  */
  51. typedef struct module_struct    module_t;
  52.  
  53. /** Type definition of the module structure pointer.
  54.  *  @see module_struct
  55.  */
  56. typedef module_t *              module_ref;
  57.  
  58. /** Module map.
  59.  *  Sorted by module names.
  60.  *  @see generic_char_map.h
  61.  */
  62. GENERIC_CHAR_MAP_DECLARE( modules, module_t )
  63.  
  64. /** Module structure.
  65.  */
  66. struct  module_struct{
  67.     /** Module task identifier if running.
  68.      */
  69.     task_id_t   task_id;
  70.     /** Module service identifier.
  71.      */
  72.     services_t  service;
  73.     /** Module phone if running and connected.
  74.      */
  75.     int         phone;
  76.     /** Usage counter.
  77.      */
  78.     int         usage;
  79.     /** Module name.
  80.      */
  81.     char *      name;
  82.     /** Module full path filename.
  83.      */
  84.     char *      filename;
  85.     /** Connecting function.
  86.      */
  87.     connect_module_t *  connect_module;
  88. };
  89.  
  90. /** Adds module to the module map.
  91.  *  @param[out] module The module structure added.
  92.  *  @param[in] modules The module map.
  93.  *  @param[in] name The module name.
  94.  *  @param[in] filename The full path filename.
  95.  *  @param[in] service The module service.
  96.  *  @param[in] task_id The module current task identifier. Zero (0) means not running.
  97.  *  @param[in] connect_module The module connecting function.
  98.  *  @returns EOK on success.
  99.  *  @returns ENOMEM if there is not enough memory left.
  100.  */
  101. int add_module( module_ref * module, modules_ref modules, char * name, char * filename, services_t service, task_id_t task_id, connect_module_t * connect_module );
  102.  
  103. /** Searches and returns the specified module.
  104.  *  If the module is not running, the module filaname is spawned.
  105.  *  If the module is not connected, the connect_function is called.
  106.  *  @param[in] modules The module map.
  107.  *  @param[in] name The module name.
  108.  *  @returns The running module found. It does not have to be connected.
  109.  *  @returns NULL if there is no such module.
  110.  */
  111. module_ref  get_running_module( modules_ref modules, char * name );
  112.  
  113. /** Starts the given module.
  114.  *  @param[in] fname The module full or relative path filename.
  115.  *  @returns The new module task identifier on success.
  116.  *  @returns 0 if there is no such module.
  117.  */
  118. task_id_t   spawn( char * fname );
  119.  
  120. #endif
  121.  
  122. /** @}
  123.  */
  124.