X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/d2182f07ffae5d26030b8f05cb2f3eb845c5bb4d..b570efb92a5785e2283c9116869e8773e03a3f81:/include/xbt/random.hpp?ds=sidebyside

diff --git a/include/xbt/random.hpp b/include/xbt/random.hpp
index 83c8cbf240..35d2809469 100644
--- a/include/xbt/random.hpp
+++ b/include/xbt/random.hpp
@@ -1,4 +1,4 @@
-/* Copyright (c) 2019-2020. The SimGrid Team. All rights reserved.               */
+/* Copyright (c) 2019-2022. 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. */
@@ -40,20 +40,12 @@ public:
   /**
    * @brief Read the state of the Mersenne-Twister RNG from a file
    */
-  void read_state(std::string filename)
-  {
-    std::ifstream file(filename);
-    file >> mt19937_gen;
-  }
+  bool read_state(const std::string& filename);
 
   /**
    * @brief Write the state of the Mersenne-Twister RNG to a file
    */
-  void write_state(std::string filename)
-  {
-    std::ofstream file(filename);
-    file << mt19937_gen;
-  }
+  bool write_state(const std::string& filename) const;
 
   /**
    * @brief Draws an integer number uniformly in range [min, max] (min and max included)
@@ -93,8 +85,7 @@ public:
  */
 class XBT_PUBLIC StdRandom : public Random {
 public:
-  StdRandom() = default;
-  explicit StdRandom(int seed) : Random(seed) {}
+  using Random::Random;
 
   int uniform_int(int min, int max) override;
   double uniform_real(double min, double max) override;
@@ -108,8 +99,7 @@ public:
  */
 class XBT_PUBLIC XbtRandom : public Random {
 public:
-  XbtRandom() = default;
-  explicit XbtRandom(int seed) : Random(seed) {}
+  using Random::Random;
 
   int uniform_int(int min, int max) override;
   double uniform_real(double min, double max) override;
@@ -133,14 +123,14 @@ void set_implem_std();
 void set_mersenne_seed(int);
 
 /**
- * @brief Read the state of the Mersenne-Twister RNG from a file
+ * @brief Read the state of the Mersenne-Twister RNG from a file.
  */
-void read_mersenne_state(std::string filename);
+bool read_mersenne_state(const std::string& filename);
 
 /**
- * @brief Write the state of the Mersenne-Twister RNG to a file
+ * @brief Write the state of the Mersenne-Twister RNG to a file.
  */
-void write_mersenne_state(std::string filename);
+bool write_mersenne_state(const std::string& filename);
 
 /**
  * @brief Draws an integer number uniformly in range [min, max] (min and max included)