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Merge branch 'surf++'
[simgrid.git] / src / surf / storage.cpp
diff --git a/src/surf/storage.cpp b/src/surf/storage.cpp
new file mode 100644 (file)
index 0000000..d0b2766
--- /dev/null
@@ -0,0 +1,717 @@
+#include "storage.hpp"
+#include "surf_private.h"
+
+#define __STDC_FORMAT_MACROS
+#include <inttypes.h>
+
+extern "C" {
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_storage, surf,
+                                "Logging specific to the SURF storage module");
+}
+
+xbt_lib_t storage_lib;
+int ROUTING_STORAGE_LEVEL;      //Routing for storagelevel
+int ROUTING_STORAGE_HOST_LEVEL;
+int SURF_STORAGE_LEVEL;
+xbt_lib_t storage_type_lib;
+int ROUTING_STORAGE_TYPE_LEVEL; //Routing for storage_type level
+
+static xbt_dynar_t storage_list;
+
+xbt_dynar_t mount_list = NULL;  /* temporary store of current mount storage */
+StorageModelPtr surf_storage_model = NULL;
+
+static int storage_selective_update = 0;
+static xbt_swag_t storage_running_action_set_that_does_not_need_being_checked = NULL;
+
+/*************
+ * CallBacks *
+ *************/
+
+static XBT_INLINE void routing_storage_type_free(void *r)
+{
+  storage_type_t stype = (storage_type_t) r;
+  free(stype->model);
+  free(stype->type_id);
+  free(stype->content);
+  xbt_dict_free(&(stype->properties));
+  xbt_dict_free(&(stype->properties));
+  free(stype);
+}
+
+static XBT_INLINE void surf_storage_resource_free(void *r)
+{
+  // specific to storage
+  StoragePtr storage = dynamic_cast<StoragePtr>(static_cast<ResourcePtr>(r));
+  xbt_dict_free(&storage->p_content);
+  xbt_dynar_free(&storage->p_writeActions);
+  free(storage->p_typeId);
+  free(storage->p_contentType);
+  // generic resource
+  delete storage;
+}
+
+static XBT_INLINE void routing_storage_host_free(void *r)
+{
+  xbt_dynar_t dyn = (xbt_dynar_t) r;
+  xbt_dynar_free(&dyn);
+}
+
+static void parse_storage_init(sg_platf_storage_cbarg_t storage)
+{
+  void* stype = xbt_lib_get_or_null(storage_type_lib,
+                                    storage->type_id,
+                                    ROUTING_STORAGE_TYPE_LEVEL);
+  if(!stype) xbt_die("No storage type '%s'",storage->type_id);
+
+  // if storage content is not specified use the content of storage_type if exist
+  if(!strcmp(storage->content,"") && strcmp(((storage_type_t) stype)->content,"")){
+    storage->content = ((storage_type_t) stype)->content;
+    storage->content_type = ((storage_type_t) stype)->content_type;
+    XBT_DEBUG("For disk '%s' content is empty, inherit the content (of type %s) from storage type '%s' ",
+        storage->id,((storage_type_t) stype)->content_type,
+        ((storage_type_t) stype)->type_id);
+  }
+
+  XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' "
+      "\n\t\tmodel '%s' \n\t\tcontent '%s'\n\t\tcontent_type '%s' "
+      "\n\t\tproperties '%p'\n",
+      storage->id,
+      ((storage_type_t) stype)->model,
+      ((storage_type_t) stype)->type_id,
+      storage->content,
+      storage->content_type,
+      ((storage_type_t) stype)->properties);
+
+  surf_storage_model->createResource(storage->id, ((storage_type_t) stype)->model,
+                                     ((storage_type_t) stype)->type_id,
+                                     storage->content,
+                                     storage->content_type,
+                                     storage->properties);
+}
+
+static void parse_mstorage_init(sg_platf_mstorage_cbarg_t mstorage)
+{
+  XBT_DEBUG("parse_mstorage_init");
+}
+
+static void parse_storage_type_init(sg_platf_storage_type_cbarg_t storagetype_)
+{
+  XBT_DEBUG("parse_storage_type_init");
+}
+
+static void parse_mount_init(sg_platf_mount_cbarg_t mount)
+{
+  XBT_DEBUG("parse_mount_init");
+}
+
+static void storage_parse_storage(sg_platf_storage_cbarg_t storage)
+{
+  xbt_assert(!xbt_lib_get_or_null(storage_lib, storage->id,ROUTING_STORAGE_LEVEL),
+               "Reading a storage, processing unit \"%s\" already exists", storage->id);
+
+  // Verification of an existing type_id
+#ifndef NDEBUG
+  void* storage_type = xbt_lib_get_or_null(storage_type_lib, storage->type_id,ROUTING_STORAGE_TYPE_LEVEL);
+#endif
+  xbt_assert(storage_type,"Reading a storage, type id \"%s\" does not exists", storage->type_id);
+
+  XBT_DEBUG("ROUTING Create a storage name '%s' with type_id '%s' and content '%s'",
+      storage->id,
+      storage->type_id,
+      storage->content);
+
+  xbt_lib_set(storage_lib,
+      storage->id,
+      ROUTING_STORAGE_LEVEL,
+      (void *) xbt_strdup(storage->type_id));
+}
+
+static xbt_dict_t parse_storage_content(char *filename, sg_storage_size_t *used_size)
+{
+  *used_size = 0;
+  if ((!filename) || (strcmp(filename, "") == 0))
+    return NULL;
+
+  xbt_dict_t parse_content = xbt_dict_new_homogeneous(xbt_free);
+  FILE *file = NULL;
+
+  file = surf_fopen(filename, "r");
+  xbt_assert(file != NULL, "Cannot open file '%s' (path=%s)", filename,
+              xbt_str_join(surf_path, ":"));
+
+  char *line = NULL;
+  size_t len = 0;
+  ssize_t read;
+  char path[1024];
+  sg_storage_size_t size;
+
+
+  while ((read = xbt_getline(&line, &len, file)) != -1) {
+    if (read){
+    if(sscanf(line,"%s %" SCNu64, path, &size) == 2) {
+        *used_size += size;
+        sg_storage_size_t *psize = xbt_new(sg_storage_size_t, 1);
+        *psize = size;
+        xbt_dict_set(parse_content,path,psize,NULL);
+      } else {
+        xbt_die("Be sure of passing a good format for content file.\n");
+      }
+    }
+  }
+  free(line);
+  fclose(file);
+  return parse_content;
+}
+
+static void storage_parse_storage_type(sg_platf_storage_type_cbarg_t storage_type)
+{
+  xbt_assert(!xbt_lib_get_or_null(storage_type_lib, storage_type->id,ROUTING_STORAGE_TYPE_LEVEL),
+               "Reading a storage type, processing unit \"%s\" already exists", storage_type->id);
+
+  storage_type_t stype = xbt_new0(s_storage_type_t, 1);
+  stype->model = xbt_strdup(storage_type->model);
+  stype->properties = storage_type->properties;
+  stype->content = xbt_strdup(storage_type->content);
+  stype->content_type = xbt_strdup(storage_type->content_type);
+  stype->type_id = xbt_strdup(storage_type->id);
+  stype->size = storage_type->size;
+
+  XBT_DEBUG("ROUTING Create a storage type id '%s' with model '%s', "
+      "content '%s', and content_type '%s'",
+      stype->type_id,
+      stype->model,
+      storage_type->content,
+      storage_type->content_type);
+
+  xbt_lib_set(storage_type_lib,
+      stype->type_id,
+      ROUTING_STORAGE_TYPE_LEVEL,
+      (void *) stype);
+}
+static void storage_parse_mstorage(sg_platf_mstorage_cbarg_t mstorage)
+{
+  THROW_UNIMPLEMENTED;
+//  mount_t mnt = xbt_new0(s_mount_t, 1);
+//  mnt->id = xbt_strdup(mstorage->type_id);
+//  mnt->name = xbt_strdup(mstorage->name);
+//
+//  if(!mount_list){
+//    XBT_DEBUG("Creata a Mount list for %s",A_surfxml_host_id);
+//    mount_list = xbt_dynar_new(sizeof(char *), NULL);
+//  }
+//  xbt_dynar_push(mount_list,(void *) mnt);
+//  free(mnt->id);
+//  free(mnt->name);
+//  xbt_free(mnt);
+//  XBT_DEBUG("ROUTING Mount a storage name '%s' with type_id '%s'",mstorage->name, mstorage->id);
+}
+
+static void mount_free(void *p)
+{
+  mount_t mnt = (mount_t) p;
+  xbt_free(mnt->name);
+}
+
+static void storage_parse_mount(sg_platf_mount_cbarg_t mount)
+{
+  // Verification of an existing storage
+#ifndef NDEBUG
+  void* storage = xbt_lib_get_or_null(storage_lib, mount->storageId, ROUTING_STORAGE_LEVEL);
+#endif
+  xbt_assert(storage,"Disk id \"%s\" does not exists", mount->storageId);
+
+  XBT_DEBUG("ROUTING Mount '%s' on '%s'",mount->storageId, mount->name);
+
+  s_mount_t mnt;
+  mnt.storage = surf_storage_resource_priv(surf_storage_resource_by_name(mount->storageId));
+  mnt.name = xbt_strdup(mount->name);
+
+  if(!mount_list){
+    //FIXME:XBT_DEBUG("Create a Mount list for %s",A_surfxml_host_id);
+    mount_list = xbt_dynar_new(sizeof(s_mount_t), mount_free);
+  }
+  xbt_dynar_push(mount_list,&mnt);
+}
+
+static void storage_define_callbacks()
+{
+  sg_platf_storage_add_cb(parse_storage_init);
+  sg_platf_storage_type_add_cb(parse_storage_type_init);
+  sg_platf_mstorage_add_cb(parse_mstorage_init);
+  sg_platf_mount_add_cb(parse_mount_init);
+}
+
+void storage_register_callbacks() {
+
+  ROUTING_STORAGE_LEVEL = xbt_lib_add_level(storage_lib,xbt_free);
+  ROUTING_STORAGE_HOST_LEVEL = xbt_lib_add_level(storage_lib, routing_storage_host_free);
+  ROUTING_STORAGE_TYPE_LEVEL = xbt_lib_add_level(storage_type_lib, routing_storage_type_free);
+  SURF_STORAGE_LEVEL = xbt_lib_add_level(storage_lib, surf_storage_resource_free);
+
+  sg_platf_storage_add_cb(storage_parse_storage);
+  sg_platf_mstorage_add_cb(storage_parse_mstorage);
+  sg_platf_storage_type_add_cb(storage_parse_storage_type);
+  sg_platf_mount_add_cb(storage_parse_mount);
+}
+
+/*********
+ * Model *
+ *********/
+
+void surf_storage_model_init_default(void)
+{
+  surf_storage_model = new StorageModel();
+  storage_define_callbacks();
+  xbt_dynar_push(model_list, &surf_storage_model);
+}
+
+StorageModel::StorageModel() : Model("Storage") {
+  StorageActionLmm action;
+
+  XBT_DEBUG("surf_storage_model_init_internal");
+
+  storage_running_action_set_that_does_not_need_being_checked =
+      xbt_swag_new(xbt_swag_offset(action, p_stateHookup));
+
+  if (!p_maxminSystem) {
+    p_maxminSystem = lmm_system_new(storage_selective_update);
+  }
+}
+
+
+StorageModel::~StorageModel(){
+  lmm_system_free(p_maxminSystem);
+
+  surf_storage_model = NULL;
+
+  xbt_dynar_free(&storage_list);
+
+  xbt_swag_free(storage_running_action_set_that_does_not_need_being_checked);
+  storage_running_action_set_that_does_not_need_being_checked = NULL;
+}
+
+StoragePtr StorageModel::createResource(const char* id, const char* model, const char* type_id,
+               const char* content_name, const char* content_type, xbt_dict_t properties)
+{
+
+  xbt_assert(!surf_storage_resource_priv(surf_storage_resource_by_name(id)),
+              "Storage '%s' declared several times in the platform file",
+              id);
+
+  storage_type_t storage_type = (storage_type_t) xbt_lib_get_or_null(storage_type_lib, type_id,ROUTING_STORAGE_TYPE_LEVEL);
+
+  double Bread  = surf_parse_get_bandwidth((char*)xbt_dict_get(storage_type->properties, "Bread"));
+  double Bwrite = surf_parse_get_bandwidth((char*)xbt_dict_get(storage_type->properties, "Bwrite"));
+  double Bconnection   = surf_parse_get_bandwidth((char*)xbt_dict_get(storage_type->properties, "Bconnection"));
+
+  StoragePtr storage = new StorageLmm(this, id, properties, p_maxminSystem,
+                 Bread, Bwrite, Bconnection,
+                 type_id, (char *)content_name, xbt_strdup(content_type), storage_type->size);
+
+  xbt_lib_set(storage_lib, id, SURF_STORAGE_LEVEL, static_cast<ResourcePtr>(storage));
+
+  XBT_DEBUG("SURF storage create resource\n\t\tid '%s'\n\t\ttype '%s' \n\t\tmodel '%s' \n\t\tproperties '%p'\n\t\tBread '%f'\n",
+      id,
+      model,
+      type_id,
+      storage_type->properties,
+      Bread);
+
+  if(!storage_list)
+       storage_list = xbt_dynar_new(sizeof(char *),NULL);
+  xbt_dynar_push(storage_list, &storage);
+
+  return storage;
+}
+
+double StorageModel::shareResources(double now)
+{
+  XBT_DEBUG("storage_share_resources %f", now);
+  unsigned int i, j;
+  StoragePtr storage;
+  StorageActionLmmPtr write_action;
+
+  double min_completion = shareResourcesMaxMin(p_runningActionSet,
+      p_maxminSystem, lmm_solve);
+
+  double rate;
+  // Foreach disk
+  xbt_dynar_foreach(storage_list,i,storage)
+  {
+    rate = 0;
+    // Foreach write action on disk
+    xbt_dynar_foreach(storage->p_writeActions, j, write_action)
+    {
+      rate += lmm_variable_getvalue(write_action->p_variable);
+    }
+    if(rate > 0)
+      min_completion = MIN(min_completion, (storage->m_size-storage->m_usedSize)/rate);
+  }
+
+  return min_completion;
+}
+
+void StorageModel::updateActionsState(double now, double delta)
+{
+  void *_action, *_next_action;
+  StorageActionLmmPtr action = NULL;
+
+  xbt_swag_foreach_safe(_action, _next_action, p_runningActionSet) {
+       action = dynamic_cast<StorageActionLmmPtr>(static_cast<ActionPtr>(_action));
+    if(action->m_type == WRITE)
+    {
+      // Update the disk usage
+     // Update the file size
+     // For each action of type write
+      double rate = lmm_variable_getvalue(action->p_variable);
+      /* Hack to avoid rounding differences between x86 and x86_64
+       * (note that the next sizes are of type sg_storage_size_t). */
+      long incr = delta * rate + MAXMIN_PRECISION;
+      action->p_storage->m_usedSize += incr; // disk usage
+      action->p_file->size += incr; // file size
+
+      sg_storage_size_t *psize = xbt_new(sg_storage_size_t,1);
+      *psize = action->p_file->size;
+
+      xbt_dict_t content_dict = action->p_storage->p_content;
+      xbt_dict_set(content_dict, action->p_file->name, psize, NULL);
+    }
+
+    double_update(&action->m_remains,
+                  lmm_variable_getvalue(action->p_variable) * delta);
+
+    if (action->m_maxDuration != NO_MAX_DURATION)
+      double_update(&action->m_maxDuration, delta);
+
+    if(action->m_remains > 0 &&
+        lmm_get_variable_weight(action->p_variable) > 0 &&
+        action->p_storage->m_usedSize == action->p_storage->m_size)
+    {
+      action->m_finish = surf_get_clock();
+      action->setState(SURF_ACTION_FAILED);
+    } else if ((action->m_remains <= 0) &&
+        (lmm_get_variable_weight(action->p_variable) > 0))
+    {
+      action->m_finish = surf_get_clock();
+      action->setState(SURF_ACTION_DONE);
+    } else if ((action->m_maxDuration != NO_MAX_DURATION) &&
+               (action->m_maxDuration <= 0))
+    {
+      action->m_finish = surf_get_clock();
+      action->setState(SURF_ACTION_DONE);
+    }
+  }
+
+  return;
+}
+
+xbt_dict_t Storage::parseContent(char *filename)
+{
+  m_usedSize = 0;
+  if ((!filename) || (strcmp(filename, "") == 0))
+    return NULL;
+
+  xbt_dict_t parse_content = xbt_dict_new_homogeneous(xbt_free);
+  FILE *file = NULL;
+
+  file = surf_fopen(filename, "r");
+  xbt_assert(file != NULL, "Cannot open file '%s' (path=%s)", filename,
+              xbt_str_join(surf_path, ":"));
+
+  char *line = NULL;
+  size_t len = 0;
+  ssize_t read;
+  char path[1024];
+  sg_storage_size_t size;
+
+
+  while ((read = xbt_getline(&line, &len, file)) != -1) {
+    if (read){
+    if(sscanf(line,"%s %" SCNu64, path, &size) == 2) {
+        m_usedSize += size;
+        sg_storage_size_t *psize = xbt_new(sg_storage_size_t, 1);
+        *psize = size;
+        xbt_dict_set(parse_content,path,psize,NULL);
+      } else {
+        xbt_die("Be sure of passing a good format for content file.\n");
+      }
+    }
+  }
+  free(line);
+  fclose(file);
+  return parse_content;
+}
+
+/************
+ * Resource *
+ ************/
+
+Storage::Storage(StorageModelPtr model, const char* name, xbt_dict_t properties)
+:  Resource(model, name, properties)
+{
+  p_writeActions = xbt_dynar_new(sizeof(char *),NULL);
+}
+
+StorageLmm::StorageLmm(StorageModelPtr model, const char* name, xbt_dict_t properties,
+            lmm_system_t maxminSystem, double bread, double bwrite, double bconnection,
+            const char* type_id, char *content_name, char *content_type, size_t size)
+ :  Resource(model, name, properties), ResourceLmm(), Storage(model, name, properties) {
+  XBT_DEBUG("Create resource with Bconnection '%f' Bread '%f' Bwrite '%f' and Size '%lu'", bconnection, bread, bwrite, ((unsigned long)size));
+
+  p_stateCurrent = SURF_RESOURCE_ON;
+  m_usedSize = 0;
+  m_size = 0;
+
+  p_content = parseContent(content_name);
+  p_contentType = content_type;
+  p_constraint = lmm_constraint_new(maxminSystem, this, bconnection);
+  p_constraintRead  = lmm_constraint_new(maxminSystem, this, bread);
+  p_constraintWrite = lmm_constraint_new(maxminSystem, this, bwrite);
+  m_size = size;
+  p_typeId = xbt_strdup(type_id);
+}
+
+bool Storage::isUsed()
+{
+  THROW_UNIMPLEMENTED;
+  return false;
+}
+
+void Storage::updateState(tmgr_trace_event_t event_type, double value, double date)
+{
+  THROW_UNIMPLEMENTED;
+}
+
+StorageActionPtr StorageLmm::ls(const char* path)
+{
+  StorageActionLmmPtr action = new StorageActionLmm(p_model, 0, p_stateCurrent != SURF_RESOURCE_ON, this, LS);
+
+  action->p_lsDict = NULL;
+  xbt_dict_t ls_dict = xbt_dict_new_homogeneous(xbt_free);
+
+  char* key;
+  sg_storage_size_t size = 0;
+  xbt_dict_cursor_t cursor = NULL;
+
+  xbt_dynar_t dyn = NULL;
+  char* file = NULL;
+
+  // for each file in the storage content
+  xbt_dict_foreach(p_content,cursor,key,size){
+    // Search if file start with the prefix 'path'
+    if(xbt_str_start_with(key,path)){
+      file = &key[strlen(path)];
+
+      // Split file with '/'
+      dyn = xbt_str_split(file,"/");
+      file = xbt_dynar_get_as(dyn,0,char*);
+
+      // file
+      if(xbt_dynar_length(dyn) == 1){
+        sg_storage_size_t *psize = xbt_new(sg_storage_size_t, 1);
+        *psize=size;
+        xbt_dict_set(ls_dict, file, psize, NULL);
+      }
+      // Directory
+      else
+      {
+        // if directory does not exist yet in the dictionary
+        if(!xbt_dict_get_or_null(ls_dict,file))
+          xbt_dict_set(ls_dict,file,NULL,NULL);
+      }
+      xbt_dynar_free(&dyn);
+    }
+  }
+
+  action->p_lsDict = ls_dict;
+  return action;
+}
+
+StorageActionPtr StorageLmm::open(const char* mount, const char* path)
+{
+  XBT_DEBUG("\tOpen file '%s'",path);
+  sg_storage_size_t size, *psize;
+  psize = (sg_storage_size_t*) xbt_dict_get_or_null(p_content, path);
+  // if file does not exist create an empty file
+  if(psize)
+    size = *psize;
+  else {
+       psize = xbt_new(sg_storage_size_t,1);
+    size = 0;
+    *psize = size;
+    xbt_dict_set(p_content, path, psize, NULL);
+    XBT_DEBUG("File '%s' was not found, file created.",path);
+  }
+  surf_file_t file = xbt_new0(s_surf_file_t,1);
+  file->name = xbt_strdup(path);
+  file->size = size;
+  file->mount = xbt_strdup(mount);
+
+  StorageActionLmmPtr action = new StorageActionLmm(p_model, 0, p_stateCurrent != SURF_RESOURCE_ON, this, OPEN);
+  action->p_file = file;
+  return action;
+}
+
+StorageActionPtr StorageLmm::close(surf_file_t fd)
+{
+  char *filename = fd->name;
+  XBT_DEBUG("\tClose file '%s' size '%" PRIu64 "'", filename, fd->size);
+  // unref write actions from storage
+  StorageActionLmmPtr write_action;
+  unsigned int i;
+  xbt_dynar_foreach(p_writeActions, i, write_action) {
+    if ((write_action->p_file) == fd) {
+      xbt_dynar_cursor_rm(p_writeActions, &i);
+      write_action->unref();
+    }
+  }
+  free(fd->name);
+  free(fd->mount);
+  xbt_free(fd);
+  StorageActionLmmPtr action = new StorageActionLmm(p_model, 0, p_stateCurrent != SURF_RESOURCE_ON, this, CLOSE);
+  return action;
+}
+
+StorageActionPtr StorageLmm::read(surf_file_t fd, sg_storage_size_t size)
+{
+  if(size > fd->size)
+    size = fd->size;
+  StorageActionLmmPtr action = new StorageActionLmm(p_model, size, p_stateCurrent != SURF_RESOURCE_ON, this, READ);
+  return action;
+}
+
+StorageActionPtr StorageLmm::write(surf_file_t fd, sg_storage_size_t size)
+{
+  char *filename = fd->name;
+  XBT_DEBUG("\tWrite file '%s' size '%" PRIu64 "/%" PRIu64 "'",filename,size,fd->size);
+
+  StorageActionLmmPtr action = new StorageActionLmm(p_model, size, p_stateCurrent != SURF_RESOURCE_ON, this, WRITE);
+  action->p_file = fd;
+
+  // If the storage is full
+  if(m_usedSize==m_size) {
+    action->setState(SURF_ACTION_FAILED);
+  }
+  return action;
+}
+
+void StorageLmm::rename(const char *src, const char *dest)
+{
+  sg_storage_size_t *psize, *new_psize;
+  psize = (sg_storage_size_t*) xbt_dict_get_or_null(p_content,src);
+  new_psize = xbt_new(sg_storage_size_t, 1);
+  *new_psize = *psize;
+  if (psize){// src file exists
+    xbt_dict_remove(p_content, src);
+    xbt_dict_set(p_content, dest, new_psize,NULL);
+    XBT_DEBUG("Change file name from %s to %s, size '%" PRIu64 "'",src, dest, *psize);
+  }
+  else
+    XBT_DEBUG("File %s doesn't exist",src);
+}
+
+xbt_dict_t StorageLmm::getContent()
+{
+  /* For the moment this action has no cost, but in the future we could take in account access latency of the disk */
+  /*surf_action_t action = storage_action_execute(storage,0, LS);*/
+
+  xbt_dict_t content_dict = xbt_dict_new_homogeneous(NULL);
+  xbt_dict_cursor_t cursor = NULL;
+  char *file;
+  sg_storage_size_t *psize;
+
+  xbt_dict_foreach(p_content, cursor, file, psize){
+    xbt_dict_set(content_dict,file,psize,NULL);
+  }
+  return content_dict;
+}
+
+sg_storage_size_t StorageLmm::getSize(){
+  return m_size;
+}
+
+/**********
+ * Action *
+ **********/
+
+StorageActionLmm::StorageActionLmm(ModelPtr model, double cost, bool failed, StorageLmmPtr storage, e_surf_action_storage_type_t type)
+  : Action(model, cost, failed), ActionLmm(model, cost, failed), StorageAction(model, cost, failed, storage, type) {
+  XBT_IN("(%s,%" PRIu64, storage->m_name, cost);
+  p_variable = lmm_variable_new(p_model->p_maxminSystem, this, 1.0, -1.0 , 3);
+
+  // Must be less than the max bandwidth for all actions
+  lmm_expand(p_model->p_maxminSystem, storage->p_constraint, p_variable, 1.0);
+  switch(type) {
+  case OPEN:
+  case CLOSE:
+  case STAT:
+  case LS:
+    break;
+  case READ:
+    lmm_expand(p_model->p_maxminSystem, storage->p_constraintRead,
+               p_variable, 1.0);
+    break;
+  case WRITE:
+    lmm_expand(p_model->p_maxminSystem, storage->p_constraintWrite,
+               p_variable, 1.0);
+    xbt_dynar_push(storage->p_writeActions, static_cast<ActionPtr>(this));
+    break;
+  }
+  XBT_OUT();
+}
+
+int StorageActionLmm::unref()
+{
+  m_refcount--;
+  if (!m_refcount) {
+    xbt_swag_remove(static_cast<ActionPtr>(this), p_stateSet);
+    if (p_variable)
+      lmm_variable_free(p_model->p_maxminSystem, p_variable);
+#ifdef HAVE_TRACING
+    xbt_free(p_category);
+#endif
+    delete this;
+    return 1;
+  }
+  return 0;
+}
+
+void StorageActionLmm::cancel()
+{
+  setState(SURF_ACTION_FAILED);
+  return;
+}
+
+void StorageActionLmm::suspend()
+{
+  XBT_IN("(%p)", this);
+  if (m_suspended != 2) {
+    lmm_update_variable_weight(p_model->p_maxminSystem,
+                               p_variable,
+                               0.0);
+    m_suspended = 1;
+  }
+  XBT_OUT();
+}
+
+void StorageActionLmm::resume()
+{
+  THROW_UNIMPLEMENTED;
+}
+
+bool StorageActionLmm::isSuspended()
+{
+  return m_suspended == 1;
+}
+
+void StorageActionLmm::setMaxDuration(double duration)
+{
+  THROW_UNIMPLEMENTED;
+}
+
+void StorageActionLmm::setPriority(double priority)
+{
+  THROW_UNIMPLEMENTED;
+}
+