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simplify storage internals
[simgrid.git] / src / surf / storage_interface.cpp
index 5e1ef73..89a0d0c 100644 (file)
@@ -1,4 +1,4 @@
-/* Copyright (c) 2013-2014. The SimGrid Team.
+/* Copyright (c) 2013-2015. The SimGrid Team.
  * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
 
 #include "storage_interface.hpp"
 #include "surf_private.h"
+#include "xbt/file.h" /* xbt_getline */
 
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_storage, surf,
-                                "Logging specific to the SURF storage module");
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(surf_storage, surf, "Logging specific to the SURF storage module");
 
 xbt_lib_t file_lib;
+int MSG_FILE_LEVEL = -1; // Msg file level
+
 xbt_lib_t storage_lib;
-int ROUTING_STORAGE_LEVEL;      //Routing for storagelevel
-int ROUTING_STORAGE_HOST_LEVEL;
-int SURF_STORAGE_LEVEL;
+int SIMIX_STORAGE_LEVEL        = -1; // Simix storage level
+int MSG_STORAGE_LEVEL          = -1; // Msg storage level
+int ROUTING_STORAGE_LEVEL      = -1; // Routing for storage level
+int SURF_STORAGE_LEVEL = -1;
 xbt_lib_t storage_type_lib;
-int ROUTING_STORAGE_TYPE_LEVEL; //Routing for storage_type level
-xbt_dynar_t mount_list = NULL;
-StorageModelPtr surf_storage_model = NULL;
+int ROUTING_STORAGE_TYPE_LEVEL = -1; //Routing for storage_type level
+simgrid::surf::StorageModel *surf_storage_model = nullptr;
+
+namespace simgrid {
+namespace surf {
 
 /*************
  * Callbacks *
  *************/
 
-surf_callback(void, StoragePtr) storageCreatedCallbacks;
-surf_callback(void, StoragePtr) storageDestructedCallbacks;
-surf_callback(void, StoragePtr) storageStateChangedCallbacks;
-surf_callback(void, StorageActionPtr) storageActionStateChangedCallbacks;
+simgrid::xbt::signal<void(Storage*)> storageCreatedCallbacks;
+simgrid::xbt::signal<void(Storage*)> storageDestructedCallbacks;
+simgrid::xbt::signal<void(Storage*, int, int)> storageStateChangedCallbacks; // signature: wasOn, isOn
+simgrid::xbt::signal<void(StorageAction*, Action::State, Action::State)> storageActionStateChangedCallbacks;
 
 /*********
  * Model *
  *********/
 
-StorageModel::StorageModel() : Model("Storage") {
-  p_storageList = NULL;
+StorageModel::StorageModel(): Model()
+{
+  maxminSystem_ = lmm_system_new(true /* lazy update */);
 }
 
 StorageModel::~StorageModel(){
-  lmm_system_free(p_maxminSystem);
-
-  surf_storage_model = NULL;
-
-  xbt_dynar_free(&p_storageList);
+  lmm_system_free(maxminSystem_);
+  surf_storage_model = nullptr;
 }
 
 /************
  * Resource *
  ************/
 
-Storage::Storage(ModelPtr model, const char *name, xbt_dict_t props,
-                        const char* type_id, char *content_name, char *content_type, sg_size_t size)
- : Resource(model, name, props)
- , p_contentType(content_type)
- , m_size(size), m_usedSize(0)
- , p_typeId(xbt_strdup(type_id))
- , p_writeActions(xbt_dynar_new(sizeof(ActionPtr),NULL))
+Storage::Storage(Model* model, const char* name, lmm_system_t maxminSystem, double bread, double bwrite,
+                 double bconnection, const char* type_id, const char* content_name, const char* content_type,
+                 sg_size_t size, const char* attach)
+    : Resource(model, name, lmm_constraint_new(maxminSystem, this, bconnection))
+    , contentType_(xbt_strdup(content_type))
+    , size_(size)
+    , usedSize_(0)
+    , typeId_(xbt_strdup(type_id))
+    , writeActions_(std::vector<StorageAction*>())
 {
-  surf_callback_emit(storageCreatedCallbacks, this);
-  p_content = parseContent(content_name);
-  setState(SURF_RESOURCE_ON);
-}
-
-Storage::Storage(ModelPtr model, const char *name, xbt_dict_t props,
-                        lmm_system_t maxminSystem, double bread, double bwrite, double bconnection,
-                    const char* type_id, char *content_name, char *content_type, sg_size_t size, char *attach)
- :  Resource(model, name, props, lmm_constraint_new(maxminSystem, this, bconnection))
- , p_contentType(content_type)
- , m_size(size), m_usedSize(0)
- , p_typeId(xbt_strdup(type_id))
- , p_writeActions(xbt_dynar_new(sizeof(ActionPtr),NULL)) {
-  surf_callback_emit(storageCreatedCallbacks, this);
-  p_content = parseContent(content_name);
-  p_attach = xbt_strdup(attach);
-  setState(SURF_RESOURCE_ON);
+  content_ = parseContent(content_name);
+  attach_ = xbt_strdup(attach);
+  turnOn();
   XBT_DEBUG("Create resource with Bconnection '%f' Bread '%f' Bwrite '%f' and Size '%llu'", bconnection, bread, bwrite, size);
-  p_constraintRead  = lmm_constraint_new(maxminSystem, this, bread);
-  p_constraintWrite = lmm_constraint_new(maxminSystem, this, bwrite);
+  constraintRead_  = lmm_constraint_new(maxminSystem, this, bread);
+  constraintWrite_ = lmm_constraint_new(maxminSystem, this, bwrite);
 }
 
 Storage::~Storage(){
-  surf_callback_emit(storageDestructedCallbacks, this);
-  xbt_dict_free(&p_content);
-  xbt_dynar_free(&p_writeActions);
-  free(p_typeId);
-  free(p_contentType);
-  free(p_attach);
+  storageDestructedCallbacks(this);
+  xbt_dict_free(&content_);
+  free(typeId_);
+  free(contentType_);
+  free(attach_);
 }
 
-xbt_dict_t Storage::parseContent(char *filename)
+xbt_dict_t Storage::parseContent(const char *filename)
 {
-  m_usedSize = 0;
+  usedSize_ = 0;
   if ((!filename) || (strcmp(filename, "") == 0))
-    return NULL;
+    return nullptr;
 
-  xbt_dict_t parse_content = xbt_dict_new_homogeneous(xbt_free);
-  FILE *file = NULL;
+  xbt_dict_t parse_content = xbt_dict_new_homogeneous(xbt_free_f);
 
-  file = surf_fopen(filename, "r");
-  if (file == NULL)
-    xbt_die("Cannot open file '%s' (path=%s)", filename,
-            xbt_str_join(surf_path, ":"));
+  FILE *file =  surf_fopen(filename, "r");
+  xbt_assert(file, "Cannot open file '%s' (path=%s)", filename, xbt_str_join(surf_path, ":"));
 
-  char *line = NULL;
+  char *line = nullptr;
   size_t len = 0;
   ssize_t read;
   char path[1024];
@@ -110,14 +97,12 @@ xbt_dict_t Storage::parseContent(char *filename)
 
   while ((read = xbt_getline(&line, &len, file)) != -1) {
     if (read){
-      if(sscanf(line,"%s %llu", path, &size) == 2) {
-        m_usedSize += size;
-        sg_size_t *psize = xbt_new(sg_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");
-      }
+      xbt_assert(sscanf(line,"%s %llu", path, &size) == 2, "Parse error in %s: %s",filename,line);
+
+      usedSize_ += size;
+      sg_size_t *psize = xbt_new(sg_size_t, 1);
+      *psize = size;
+      xbt_dict_set(parse_content,path,psize,nullptr);
     }
   }
   free(line);
@@ -131,54 +116,73 @@ bool Storage::isUsed()
   return false;
 }
 
-void Storage::updateState(tmgr_trace_event_t /*event_type*/, double /*value*/, double /*date*/)
+void Storage::apply_event(tmgr_trace_iterator_t /*event*/, double /*value*/)
 {
   THROW_UNIMPLEMENTED;
 }
 
-void Storage::setState(e_surf_resource_state_t state)
-{
-  Resource::setState(state);
-  surf_callback_emit(storageStateChangedCallbacks, this);
+void Storage::turnOn() {
+  if (isOff()) {
+    Resource::turnOn();
+    storageStateChangedCallbacks(this, 0, 1);
+  }
+}
+void Storage::turnOff() {
+  if (isOn()) {
+    Resource::turnOff();
+    storageStateChangedCallbacks(this, 1, 0);
+  }
 }
 
 xbt_dict_t Storage::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;
+  xbt_dict_t content_dict = xbt_dict_new_homogeneous(nullptr);
+  xbt_dict_cursor_t cursor = nullptr;
   char *file;
   sg_size_t *psize;
 
-  xbt_dict_foreach(p_content, cursor, file, psize){
-    xbt_dict_set(content_dict,file,psize,NULL);
+  xbt_dict_foreach(content_, cursor, file, psize){
+    xbt_dict_set(content_dict,file,psize,nullptr);
   }
   return content_dict;
 }
 
 sg_size_t Storage::getSize(){
-  return m_size;
+  return size_;
+}
+
+sg_size_t Storage::getFreeSize(){
+  return size_ - usedSize_;
+}
+
+sg_size_t Storage::getUsedSize(){
+  return usedSize_;
 }
 
 /**********
  * Action *
  **********/
-StorageAction::StorageAction(ModelPtr model, double cost, bool failed,
-                                    StoragePtr storage, e_surf_action_storage_type_t type)
-: Action(model, cost, failed)
-, m_type(type), p_storage(storage), p_file(NULL), p_lsDict(NULL)
+StorageAction::StorageAction(Model* model, double cost, bool failed, Storage* storage,
+                             e_surf_action_storage_type_t type)
+    : Action(model, cost, failed), type_(type), storage_(storage), file_(nullptr)
 {
+  progress_ = 0;
 };
 
-StorageAction::StorageAction(ModelPtr model, double cost, bool failed, lmm_variable_t var,
-                                    StoragePtr storage, e_surf_action_storage_type_t type)
-  : Action(model, cost, failed, var)
-  , m_type(type), p_storage(storage), p_file(NULL), p_lsDict(NULL) {
+StorageAction::StorageAction(Model* model, double cost, bool failed, lmm_variable_t var, Storage* storage,
+                             e_surf_action_storage_type_t type)
+    : Action(model, cost, failed, var), type_(type), storage_(storage), file_(nullptr)
+{
+  progress_ = 0;
 }
 
-void StorageAction::setState(e_surf_action_state_t state){
+void StorageAction::setState(Action::State state){
+  Action::State old = getState();
   Action::setState(state);
-  surf_callback_emit(storageActionStateChangedCallbacks, this);
+  storageActionStateChangedCallbacks(this, old, state);
+}
+
+}
 }