Update copyright years.

[thirdparty/gcc.git] / libstdc++-v3 / src / c++11 / future.cc

diff --git a/libstdc++-v3/src/c++11/future.cc b/libstdc++-v3/src/c++11/future.cc
index 906ded5476f9dd3b4be2a5a6ba995fed10240bdf..a746110a5fe7a150ec1b7c38faaa05a6e432026c 100644 (file)
--- a/libstdc++-v3/src/c++11/future.cc
+++ b/libstdc++-v3/src/c++11/future.cc
@@ -1,6 +1,6 @@
 // future -*- C++ -*-
 
-// Copyright (C) 2009-2013 Free Software Foundation, Inc.
+// Copyright (C) 2009-2020 Free Software Foundation, Inc.
 //
 // This file is part of the GNU ISO C++ Library.  This library is free
 // software; you can redistribute it and/or modify it under the
@@ -23,6 +23,7 @@
 // <http://www.gnu.org/licenses/>.
 
 #include <future>
+#include <bits/functexcept.h>
 
 namespace
 {
@@ -32,6 +33,7 @@ namespace
     name() const noexcept
     { return "future"; }
 
+    _GLIBCXX_DEFAULT_ABI_TAG
     virtual std::string message(int __ec) const
     {
       std::string __msg;
@@ -69,22 +71,46 @@ namespace std _GLIBCXX_VISIBILITY(default)
 {
 _GLIBCXX_BEGIN_NAMESPACE_VERSION
 
+  void
+  __throw_future_error(int __i __attribute__((unused)))
+  { _GLIBCXX_THROW_OR_ABORT(future_error(make_error_code(future_errc(__i)))); }
+
   const error_category& future_category() noexcept
   { return __future_category_instance(); }
 
   future_error::~future_error() noexcept { }
 
   const char*
-  future_error::what() const noexcept { return _M_code.message().c_str(); }
+  future_error::what() const noexcept { return logic_error::what(); }
 
-#if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1) \
-  && (ATOMIC_INT_LOCK_FREE > 1)
+#ifdef _GLIBCXX_HAS_GTHREADS
   __future_base::_Result_base::_Result_base() = default;
 
   __future_base::_Result_base::~_Result_base() = default;
 
-  __future_base::_State_base::~_State_base() = default;
-#endif
+  void
+  __future_base::_State_baseV2::_Make_ready::_S_run(void* p)
+  {
+    unique_ptr<_Make_ready> mr{static_cast<_Make_ready*>(p)};
+    if (auto state = mr->_M_shared_state.lock())
+      {
+       // Use release MO to synchronize with observers of the ready state.
+       state->_M_status._M_store_notify_all(_Status::__ready,
+           memory_order_release);
+      }
+  }
+
+  // defined in src/c++11/condition_variable.cc
+  extern void
+  __at_thread_exit(__at_thread_exit_elt* elt);
+
+  void
+  __future_base::_State_baseV2::_Make_ready::_M_set()
+  {
+    _M_cb = &_Make_ready::_S_run;
+    __at_thread_exit(this);
+  }
+#endif // _GLIBCXX_HAS_GTHREADS
 
 _GLIBCXX_END_NAMESPACE_VERSION
 } // namespace std