X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/19b3962253112b19308537bc2400de141c119d99..eadce057a2c8e09df65641e77935bd9ffc905440:/include/simgrid/s4u/Storage.hpp?ds=sidebyside

diff --git a/include/simgrid/s4u/Storage.hpp b/include/simgrid/s4u/Storage.hpp
index 305bbba87d..9bfa5add00 100644
--- a/include/simgrid/s4u/Storage.hpp
+++ b/include/simgrid/s4u/Storage.hpp
@@ -1,5 +1,4 @@
-/* Copyright (c) 2006-2015, 2017. The SimGrid Team.
- * All rights reserved.                                                     */
+/* Copyright (c) 2006-2019. The SimGrid Team. All rights reserved.          */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
@@ -7,57 +6,80 @@
 #ifndef INCLUDE_SIMGRID_S4U_STORAGE_HPP_
 #define INCLUDE_SIMGRID_S4U_STORAGE_HPP_
 
+#include <simgrid/forward.h>
+#include <simgrid/s4u/Io.hpp>
+#include <xbt/Extendable.hpp>
+#include <xbt/base.h>
+#include <xbt/signal.hpp>
+
 #include <map>
-#include <simgrid/s4u/forward.hpp>
-#include <simgrid/simix.h>
 #include <string>
 #include <unordered_map>
-#include <xbt/base.h>
 
 namespace simgrid {
 namespace s4u {
 
-XBT_PUBLIC_CLASS Storage
-{
-  friend s4u::Engine;
+/** Storage represent the disk resources, usually associated to a given host
+ *
+ * By default, SimGrid does not keep track of the actual data being written but
+ * only computes the time taken by the corresponding data movement.
+ */
 
-  Storage(std::string name, smx_storage_t inferior);
+class XBT_PUBLIC Storage : public xbt::Extendable<Storage> {
+  friend Engine;
+  friend Io;
+  friend kernel::resource::StorageImpl;
 
 public:
-  Storage() = default;
-  virtual ~Storage();
-  /** Retrieve a Storage by its name. It must exist in the platform file */
-  static Storage& byName(const char* name);
-  const char* name();
-  const char* host();
-  sg_size_t sizeFree();
-  sg_size_t sizeUsed();
-  /** Retrieve the total amount of space of this storage element */
-  sg_size_t size();
-  xbt_dict_t properties();
-  const char* property(const char* key);
-  void setProperty(const char* key, char* value);
-  std::map<std::string, sg_size_t*>* content();
-  std::unordered_map<std::string, Storage*>* allStorages();
+  explicit Storage(const std::string& name, kernel::resource::StorageImpl* pimpl);
 
 protected:
-  smx_storage_t inferior();
-
+  virtual ~Storage() = default;
 public:
-  void setUserdata(void* data) { userdata_ = data; }
-  void* userdata() { return userdata_; }
+  /** @brief Callback signal fired when a new Storage is created */
+  static xbt::signal<void(Storage&)> on_creation;
+  /** @brief Callback signal fired when a Storage is destroyed */
+  static xbt::signal<void(Storage const&)> on_destruction;
+  /** @brief Callback signal fired when a Storage's state changes */
+  static xbt::signal<void(Storage const&)> on_state_change;
 
-private:
-  static std::unordered_map<std::string, Storage*>* storages_;
+  /** Retrieve a Storage by its name. It must exist in the platform file */
+  static Storage* by_name(const std::string& name);
+  static Storage* by_name_or_null(const std::string& name);
+
+  /** @brief Retrieves the name of that storage as a C++ string */
+  std::string const& get_name() const { return name_; }
+  /** @brief Retrieves the name of that storage as a C string */
+  const char* get_cname() const { return name_.c_str(); }
 
-  std::string hostname_;
+  const char* get_type();
+  Host* get_host() { return attached_to_; };
+  void set_host(Host* host) { attached_to_ = host; }
+
+  const std::unordered_map<std::string, std::string>* get_properties() const;
+  const char* get_property(const std::string& key) const;
+  void set_property(const std::string&, const std::string& value);
+
+  void set_data(void* data) { userdata_ = data; }
+  void* get_data() { return userdata_; }
+
+  IoPtr io_init(sg_size_t size, s4u::Io::OpType type);
+
+  IoPtr read_async(sg_size_t size);
+  sg_size_t read(sg_size_t size);
+
+  IoPtr write_async(sg_size_t size);
+  sg_size_t write(sg_size_t size);
+  kernel::resource::StorageImpl* get_impl() const { return pimpl_; }
+
+private:
+  Host* attached_to_ = nullptr;
+  kernel::resource::StorageImpl* const pimpl_;
   std::string name_;
-  sg_size_t size_      = 0;
-  smx_storage_t pimpl_ = nullptr;
-  void* userdata_      = nullptr;
+  void* userdata_ = nullptr;
 };
 
-} /* namespace s4u */
-} /* namespace simgrid */
+} // namespace s4u
+} // namespace simgrid
 
 #endif /* INCLUDE_SIMGRID_S4U_STORAGE_HPP_ */