src/surf/storage.c

   1 /* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012. The SimGrid Team.
   2  * All rights reserved.                                                                 */
   3
   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.             */
   6
   7 #include "xbt/ex.h"
   8 #include "xbt/dict.h"
   9 #include "portable.h"
  10 #include "surf_private.h"
  11 #include "surf/surf_resource.h"
  12
  13 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_storage, surf,
  14                                 "Logging specific to the SURF storage module");
  15
  16 surf_model_t surf_storage_model = NULL;
  17
  18 typedef struct surf_storage {
  19   s_surf_resource_t generic_resource;
  20   const char* model;
  21   const char* content; /*should be a dict */
  22 } s_surf_storage_t, *surf_storage_t;
  23
  24 static surf_action_t storage_action_open(void *storage, const char* path, const char* mode)
  25 {
  26   return NULL;
  27 }
  28
  29 static surf_action_t storage_action_close(void *storage, surf_file_t fp)
  30 {
  31   return NULL;
  32 }
  33
  34 static surf_action_t storage_action_read(void *storage, void* ptr, size_t size, size_t nmemb, surf_file_t stream)
  35 {
  36   return NULL;
  37 }
  38
  39 static surf_action_t storage_action_write(void *storage, const void* ptr, size_t size, size_t nmemb, surf_file_t stream)
  40 {
  41   return NULL;
  42 }
  43
  44 static surf_action_t storage_action_stat(void *storage, int fd, void* buf)
  45 {
  46   return NULL;
  47 }
  48
  49 static void* storage_create_resource(const char* id, const char* model,
  50                                     const char* content, xbt_dict_t storage_properties)
  51 {
  52     XBT_DEBUG("Storage_create_resource '%s' at level SURF_STORAGE_LEVEL",id);
  53     surf_storage_t storage = NULL;
  54     xbt_assert(!surf_storage_resource_by_name(id),
  55                 "Storage '%s' declared several times in the platform file",
  56                 id);
  57     storage = (surf_storage_t) surf_resource_new(sizeof(s_surf_storage_t),
  58             surf_storage_model, id, storage_properties);
  59     storage->model = model;
  60     storage->content = content;
  61     xbt_lib_set(storage_lib, id, SURF_STORAGE_LEVEL, storage);
  62
  63     return storage;
  64 }
  65
  66 static void storage_finalize(void)
  67 {
  68   surf_model_exit(surf_storage_model);
  69   surf_storage_model = NULL;
  70 }
  71
  72 static void storage_update_actions_state(double now, double delta)
  73 {
  74
  75 }
  76
  77 static double storage_share_resources(double NOW)
  78 {
  79   double min_action_duration = -1;
  80   return min_action_duration;
  81 }
  82
  83 static int storage_resource_used(void *resource_id)
  84 {
  85   THROW_UNIMPLEMENTED;
  86   return 0;
  87 }
  88
  89 static void storage_resources_state(void *id, tmgr_trace_event_t event_type,
  90                                  double value, double time)
  91 {
  92   THROW_UNIMPLEMENTED;
  93 }
  94
  95 static int storage_action_unref(surf_action_t action)
  96 {
  97   THROW_UNIMPLEMENTED;
  98   return 0;
  99 }
 100
 101 static void storage_action_cancel(surf_action_t action)
 102 {
 103   THROW_UNIMPLEMENTED;
 104 }
 105
 106 static void storage_action_state_set(surf_action_t action, e_surf_action_state_t state)
 107 {
 108   THROW_UNIMPLEMENTED;
 109 }
 110
 111 static void storage_action_suspend(surf_action_t action)
 112 {
 113   THROW_UNIMPLEMENTED;
 114 }
 115
 116 static void storage_action_resume(surf_action_t action)
 117 {
 118   THROW_UNIMPLEMENTED;
 119 }
 120
 121 static int storage_action_is_suspended(surf_action_t action)
 122 {
 123   THROW_UNIMPLEMENTED;
 124   return 0;
 125 }
 126
 127 static void storage_action_set_max_duration(surf_action_t action, double duration)
 128 {
 129   THROW_UNIMPLEMENTED;
 130 }
 131
 132 static void storage_action_set_priority(surf_action_t action, double priority)
 133 {
 134   THROW_UNIMPLEMENTED;
 135 }
 136
 137 static void parse_storage_init(sg_platf_storage_cbarg_t storage)
 138 {
 139   storage_create_resource(storage->id,
 140       storage->model,
 141       storage->content,
 142       storage->properties);
 143 }
 144
 145 static void storage_define_callbacks()
 146 {
 147   sg_platf_storage_add_cb(parse_storage_init);
 148 }
 149
 150 static void surf_storage_model_init_internal(void)
 151 {
 152   XBT_DEBUG("surf_storage_model_init_internal");
 153   surf_storage_model = surf_model_init();
 154
 155   surf_storage_model->name = "Storage";
 156   surf_storage_model->action_unref = storage_action_unref;
 157   surf_storage_model->action_cancel = storage_action_cancel;
 158   surf_storage_model->action_state_set = storage_action_state_set;
 159
 160   surf_storage_model->model_private->finalize = storage_finalize;
 161   surf_storage_model->model_private->update_actions_state = storage_update_actions_state;
 162   surf_storage_model->model_private->share_resources = storage_share_resources;
 163   surf_storage_model->model_private->resource_used = storage_resource_used;
 164   surf_storage_model->model_private->update_resource_state = storage_resources_state;
 165
 166   surf_storage_model->suspend = storage_action_suspend;
 167   surf_storage_model->resume = storage_action_resume;
 168   surf_storage_model->is_suspended = storage_action_is_suspended;
 169   surf_storage_model->set_max_duration = storage_action_set_max_duration;
 170   surf_storage_model->set_priority = storage_action_set_priority;
 171
 172   surf_storage_model->extension.storage.open = storage_action_open;
 173   surf_storage_model->extension.storage.close = storage_action_close;
 174   surf_storage_model->extension.storage.read = storage_action_read;
 175   surf_storage_model->extension.storage.write = storage_action_write;
 176   surf_storage_model->extension.storage.stat = storage_action_stat;
 177   surf_storage_model->extension.storage.create_resource = storage_create_resource;
 178 }
 179
 180 void surf_storage_model_init_default(void)
 181 {
 182   surf_storage_model_init_internal();
 183   storage_define_callbacks();
 184
 185   xbt_dynar_push(model_list, &surf_storage_model);
 186 }