X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/8cb54d14b2c312911cc049247c702cffb48131cc..504e8ecc4d4245655dafaae23e56e64260b746ad:/include/xbt/future.hpp

diff --git a/include/xbt/future.hpp b/include/xbt/future.hpp
deleted file mode 100644
index 0c850ee413..0000000000
--- a/include/xbt/future.hpp
+++ /dev/null
@@ -1,163 +0,0 @@
-/* Copyright (c) 2015-2021. 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. */
-
-#ifndef XBT_FUTURE_HPP
-#define XBT_FUTURE_HPP
-
-#include <cstddef>
-
-#include <boost/variant.hpp>
-#include <exception>
-#include <functional>
-#include <future> // std::future_error
-#include <stdexcept>
-#include <type_traits>
-#include <utility>
-#include <xbt/ex.h>
-
-namespace simgrid {
-namespace xbt {
-
-/** A value or an exception (or nothing)
- *
- *  This is similar to `optional<expected<T>>`` but it with a Future/Promise
- *  like API.
- *
- *  Also the name is not so great.
- **/
-template<class T>
-class Result {
-public:
-  bool is_valid() const
-  {
-    return value_.which() > 0;
-  }
-  void set_exception(std::exception_ptr e)
-  {
-    value_ = std::move(e);
-  }
-  void set_value(T&& value)
-  {
-    value_ = std::move(value);
-  }
-  void set_value(T const& value)
-  {
-    value_ = value;
-  }
-
-  /** Extract the value from the future
-   *
-   *  After this, the value is invalid.
-   **/
-  T get()
-  {
-    switch (value_.which()) {
-      case 1: {
-        T value = std::move(boost::get<T>(value_));
-        value_  = boost::blank();
-        return value;
-      }
-      case 2: {
-        std::exception_ptr exception = std::move(boost::get<std::exception_ptr>(value_));
-        value_                       = boost::blank();
-        std::rethrow_exception(std::move(exception));
-        break;
-      }
-      default:
-        throw std::future_error(std::future_errc::no_state);
-    }
-  }
-
-private:
-  boost::variant<boost::blank, T, std::exception_ptr> value_;
-};
-
-template<>
-class Result<void> : public Result<std::nullptr_t>
-{
-public:
-  void set_value()
-  {
-    Result<std::nullptr_t>::set_value(nullptr);
-  }
-  void get()
-  {
-    Result<std::nullptr_t>::get();
-  }
-};
-
-template<class T>
-class Result<T&> : public Result<std::reference_wrapper<T>>
-{
-public:
-  void set_value(T& value)
-  {
-    Result<std::reference_wrapper<T>>::set_value(std::ref(value));
-  }
-  T& get()
-  {
-    return Result<std::reference_wrapper<T>>::get();
-  }
-};
-
-/** Execute some code and set a promise or result accordingly
- *
- *  Roughly this does:
- *
- *  <pre>
- *  promise.set_value(code());
- *  </pre>
- *
- *  but it takes care of exceptions and works with `void`.
- *
- *  We might need this when working with generic code because
- *  the trivial implementation does not work with `void` (before C++1z).
- *
- *  @param    code  What we want to do
- *  @param  promise Where to want to store the result
- */
-template <class R, class F> auto fulfill_promise(R& promise, F&& code) -> decltype(promise.set_value(code()))
-{
-  try {
-    promise.set_value(std::forward<F>(code)());
-  } catch (...) {
-    promise.set_exception(std::current_exception());
-  }
-}
-
-template <class R, class F> auto fulfill_promise(R& promise, F&& code) -> decltype(promise.set_value())
-{
-  try {
-    std::forward<F>(code)();
-    promise.set_value();
-  } catch (...) {
-    promise.set_exception(std::current_exception());
-  }
-}
-
-/** Set a promise/result from a future/result
- *
- *  Roughly this does:
- *
- *  <pre>promise.set_value(future);</pre>
- *
- *  but it takes care of exceptions and works with `void`.
- *
- *  We might need this when working with generic code because
- *  the trivial implementation does not work with `void` (before C++1z).
- *
- *  @param promise output (a valid future or a result)
- *  @param future  input (a ready/waitable future or a valid result)
- */
-template <class P, class F> inline void set_promise(P& promise, F&& future)
-{
-  fulfill_promise(promise, [&future] { return std::forward<F>(future).get(); });
-}
-
-}
-}
-
-#endif