// future -*- C++ -*-
-// Copyright (C) 2009, 2010, 2011, 2012 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
// <http://www.gnu.org/licenses/>.
#include <future>
+#include <bits/functexcept.h>
namespace
{
name() const noexcept
{ return "future"; }
+ _GLIBCXX_DEFAULT_ABI_TAG
virtual std::string message(int __ec) const
{
std::string __msg;
const future_error_category&
__future_category_instance() noexcept
{
- static const future_error_category __fec;
+ static const future_error_category __fec{};
return __fec;
}
}
{
_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;
+ 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);
+ }
+ }
-#ifdef _GLIBCXX_HAVE_TLS
- __future_base::_Async_state_common::~_Async_state_common() { _M_join(); }
+ // defined in src/c++11/condition_variable.cc
+ extern void
+ __at_thread_exit(__at_thread_exit_elt* elt);
- // Explicit instantiation due to -fno-implicit-instantiation.
- template void call_once(once_flag&, void (thread::*&&)(), reference_wrapper<thread>&&);
-#endif
-#endif
+ 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
-
-// XXX GLIBCXX_ABI Deprecated
-// gcc-4.6.0
-// <future> export changes
-#if defined(_GLIBCXX_SYMVER_GNU) && defined(PIC) \
- && defined(_GLIBCXX_HAVE_AS_SYMVER_DIRECTIVE) \
- && defined(_GLIBCXX_HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT)
-
-namespace __gnu_cxx _GLIBCXX_VISIBILITY(default)
-{
- const std::error_category* future_category = &__future_category_instance();
-}
-
-#define _GLIBCXX_ASM_SYMVER(cur, old, version) \
- asm (".symver " #cur "," #old "@@@" #version);
-
-_GLIBCXX_ASM_SYMVER(_ZN9__gnu_cxx15future_categoryE, _ZSt15future_category, GLIBCXX_3.4.14)
-
-#endif
-