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future (promise): Add constructors for uses-allocator construction from rvalue promise.

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* include/std/future (promise): Add constructors for uses-allocator
	construction from rvalue promise.
	(packaged_task): Implement LWG 2067. Add additional constructors for
	uses-allocator construction.
	* testsuite/30_threads/packaged_task/cons/3.cc: New.
	* testsuite/30_threads/packaged_task/cons/alloc2.cc: New.
	* testsuite/30_threads/promise/cons/alloc2.cc: New.

From-SVN: r180757
This commit is contained in:
Jonathan Wakely 2011-11-02 00:53:12 +00:00 committed by Jonathan Wakely
parent 095c8a9466
commit 376d7c51ec
5 changed files with 197 additions and 4 deletions
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10
libstdc++-v3/ChangeLog
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@ -1,3 +1,13 @@
2011-11-02 Jonathan Wakely <jwakely.gcc@gmail.com>
* include/std/future (promise): Add constructors for uses-allocator
construction from rvalue promise.
(packaged_task): Implement LWG 2067. Add additional constructors for
uses-allocator construction.
* testsuite/30_threads/packaged_task/cons/3.cc: New.
* testsuite/30_threads/packaged_task/cons/alloc2.cc: New.
* testsuite/30_threads/promise/cons/alloc2.cc: New.
2011-10-31 Jason Merrill <jason@redhat.com>
* include/Makefile.am (install-freestanding-headers): Install

53
libstdc++-v3/include/std/future
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@ -955,6 +955,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
_M_storage(__future_base::_S_allocate_result<_Res>(__a))
{ }
template<typename _Allocator>
promise(allocator_arg_t, const _Allocator&, promise&& __rhs)
: _M_future(std::move(__rhs._M_future)),
_M_storage(std::move(__rhs._M_storage))
{ }
promise(const promise&) = delete;
~promise()
@ -1047,6 +1053,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
_M_storage(__future_base::_S_allocate_result<_Res&>(__a))
{ }
template<typename _Allocator>
promise(allocator_arg_t, const _Allocator&, promise&& __rhs)
: _M_future(std::move(__rhs._M_future)),
_M_storage(std::move(__rhs._M_storage))
{ }
promise(const promise&) = delete;
~promise()
@ -1122,6 +1134,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
_M_storage(__future_base::_S_allocate_result<void>(__a))
{ }
template<typename _Allocator>
promise(allocator_arg_t, const _Allocator&, promise&& __rhs)
: _M_future(std::move(__rhs._M_future)),
_M_storage(std::move(__rhs._M_storage))
{ }
promise(const promise&) = delete;
~promise()
@ -1270,6 +1288,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
{ return std::forward<_Tp>(__t); }
};
template<typename _Task, typename _Fn, bool
= is_same<_Task, typename remove_reference<_Fn>::type>::value>
struct __is_same_pkgdtask
{ typedef void __type; };
template<typename _Task, typename _Fn>
struct __is_same_pkgdtask<_Task, _Fn, true>
{ };
/// packaged_task
template<typename _Res, typename... _ArgTypes>
class packaged_task<_Res(_ArgTypes...)>
@ -1281,13 +1308,20 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
// Construction and destruction
packaged_task() noexcept { }
template<typename _Fn>
template<typename _Allocator>
explicit
packaged_task(allocator_arg_t, const _Allocator& __a) noexcept
{ }
template<typename _Fn, typename = typename
__is_same_pkgdtask<packaged_task, _Fn>::__type>
explicit
packaged_task(_Fn&& __fn)
: _M_state(std::make_shared<_State_type>(std::forward<_Fn>(__fn)))
{ }
template<typename _Fn, typename _Allocator>
template<typename _Fn, typename _Allocator, typename = typename
__is_same_pkgdtask<packaged_task, _Fn>::__type>
explicit
packaged_task(allocator_arg_t, const _Allocator& __a, _Fn&& __fn)
: _M_state(std::allocate_shared<_State_type>(__a,
@ -1301,13 +1335,24 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
}
// No copy
packaged_task(packaged_task&) = delete;
packaged_task& operator=(packaged_task&) = delete;
packaged_task(const packaged_task&) = delete;
packaged_task& operator=(const packaged_task&) = delete;
template<typename _Allocator>
explicit
packaged_task(allocator_arg_t, const _Allocator&,
const packaged_task&) = delete;
// Move support
packaged_task(packaged_task&& __other) noexcept
{ this->swap(__other); }
template<typename _Allocator>
explicit
packaged_task(allocator_arg_t, const _Allocator&,
packaged_task&& __other) noexcept
{ this->swap(__other); }
packaged_task& operator=(packaged_task&& __other) noexcept
{
packaged_task(std::move(__other)).swap(*this);

56
libstdc++-v3/testsuite/30_threads/packaged_task/cons/3.cc Normal file
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@ -0,0 +1,56 @@
// { dg-do run { target *-*-freebsd* *-*-netbsd* *-*-linux* *-*-solaris* *-*-cygwin *-*-darwin* alpha*-*-osf* mips-sgi-irix6* } }
// { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* alpha*-*-osf* mips-sgi-irix6* } }
// { dg-options " -std=gnu++0x -pthreads" { target *-*-solaris* } }
// { dg-options " -std=gnu++0x " { target *-*-cygwin *-*-darwin* } }
// { dg-require-cstdint "" }
// { dg-require-gthreads "" }
// { dg-require-atomic-builtins "" }
// Copyright (C) 2011 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
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// LWG 2067. packaged_task should have deleted copy c'tor with const parameter
#include <future>
#include <thread>
#include <testsuite_hooks.h>
template<typename F>
std::future<typename std::result_of<F()>::type> spawn_task(F f)
{
typedef typename std::result_of<F()>::type result_type;
std::packaged_task<result_type()> task(std::move(f));
std::future<result_type> res(task.get_future());
std::thread(std::move(task)).detach();
return res;
}
int get_res()
{
return 42;
}
void test01()
{
auto f = spawn_task(get_res);
VERIFY( f.get() == get_res() );
}
int main()
{
test01();
}

40
libstdc++-v3/testsuite/30_threads/packaged_task/cons/alloc2.cc Normal file
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@ -0,0 +1,40 @@
// { dg-do compile }
// { dg-options "-std=gnu++0x" }
// { dg-require-cstdint "" }
// { dg-require-gthreads "" }
// { dg-require-atomic-builtins "" }
// Copyright (C) 2011 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
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// Test that packaged_task can be default-constructed or move-constructed
// in a context that does uses-allocator construction.
#include <future>
#include <memory>
#include <tuple>
using std::packaged_task;
using std::allocator_arg;
using std::allocator;
using std::tuple;
typedef packaged_task<void()> task;
allocator<task> a;
tuple<task> t1{ allocator_arg, a };
tuple<task> t2{ allocator_arg, a, task{} };

42
libstdc++-v3/testsuite/30_threads/promise/cons/alloc2.cc Normal file
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@ -0,0 +1,42 @@
// { dg-do compile }
// { dg-options "-std=gnu++0x" }
// { dg-require-cstdint "" }
// { dg-require-gthreads "" }
// { dg-require-atomic-builtins "" }
// Copyright (C) 2011 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
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// Test that promise can be default-constructed or move-constructed
// in a context that does uses-allocator construction.
#include <future>
#include <memory>
#include <tuple>
using std::promise;
using std::allocator_arg;
using std::allocator;
using std::tuple;
typedef promise<int> p;
typedef promise<int&> pr;
typedef promise<void> pv;
allocator<p> a;
tuple<p, pr, pv> t1{ allocator_arg, a };
tuple<p, pr, pv> t2{ allocator_arg, a, p{}, pr{}, pv{} };