re PR libstdc++/53841 ([C++11] condition_variable::wait_until() fails with high resolution clocks)
PR libstdc++/53841 * include/std/condition_variable (condition_variable::wait_until): Handle clocks with higher resolution than __clock_t. (condition_variable::__wait_until_impl): Remove unnecessary _Clock parameter. * testsuite/30_threads/condition_variable/members/53841.cc: New. From-SVN: r193523
This commit is contained in:
parent
6c2b4cacb9
commit
c25639b1a3
@ -1,3 +1,12 @@
|
||||
2012-11-15 Jonathan Wakely <jwakely.gcc@gmail.com>
|
||||
|
||||
PR libstdc++/53841
|
||||
* include/std/condition_variable (condition_variable::wait_until):
|
||||
Handle clocks with higher resolution than __clock_t.
|
||||
(condition_variable::__wait_until_impl): Remove unnecessary _Clock
|
||||
parameter.
|
||||
* testsuite/30_threads/condition_variable/members/53841.cc: New.
|
||||
|
||||
2012-11-14 Jonathan Wakely <jwakely.gcc@gmail.com>
|
||||
|
||||
PR libstdc++/55320
|
||||
|
@ -1,6 +1,6 @@
|
||||
// <condition_variable> -*- C++ -*-
|
||||
|
||||
// Copyright (C) 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
|
||||
// Copyright (C) 2008-2012 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
|
||||
@ -107,8 +107,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
|
||||
// DR 887 - Sync unknown clock to known clock.
|
||||
const typename _Clock::time_point __c_entry = _Clock::now();
|
||||
const __clock_t::time_point __s_entry = __clock_t::now();
|
||||
const chrono::nanoseconds __delta = __atime - __c_entry;
|
||||
const __clock_t::time_point __s_atime = __s_entry + __delta;
|
||||
const auto __delta = __atime - __c_entry;
|
||||
const auto __s_atime = __s_entry + __delta;
|
||||
|
||||
return __wait_until_impl(__lock, __s_atime);
|
||||
}
|
||||
@ -143,16 +143,13 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
|
||||
{ return &_M_cond; }
|
||||
|
||||
private:
|
||||
template<typename _Clock, typename _Duration>
|
||||
template<typename _Dur>
|
||||
cv_status
|
||||
__wait_until_impl(unique_lock<mutex>& __lock,
|
||||
const chrono::time_point<_Clock, _Duration>& __atime)
|
||||
const chrono::time_point<__clock_t, _Dur>& __atime)
|
||||
{
|
||||
chrono::time_point<__clock_t, chrono::seconds> __s =
|
||||
chrono::time_point_cast<chrono::seconds>(__atime);
|
||||
|
||||
chrono::nanoseconds __ns =
|
||||
chrono::duration_cast<chrono::nanoseconds>(__atime - __s);
|
||||
auto __s = chrono::time_point_cast<chrono::seconds>(__atime);
|
||||
auto __ns = chrono::duration_cast<chrono::nanoseconds>(__atime - __s);
|
||||
|
||||
__gthread_time_t __ts =
|
||||
{
|
||||
@ -163,7 +160,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
|
||||
__gthread_cond_timedwait(&_M_cond, __lock.mutex()->native_handle(),
|
||||
&__ts);
|
||||
|
||||
return (_Clock::now() < __atime
|
||||
return (__clock_t::now() < __atime
|
||||
? cv_status::no_timeout : cv_status::timeout);
|
||||
}
|
||||
};
|
||||
|
@ -0,0 +1,50 @@
|
||||
// { dg-do compile }
|
||||
// { dg-options " -std=gnu++0x -pthread" { target *-*-freebsd* *-*-netbsd* *-*-linux* powerpc-ibm-aix* } }
|
||||
// { dg-options " -std=gnu++0x -pthreads" { target *-*-solaris* } }
|
||||
// { dg-options " -std=gnu++0x " { target *-*-cygwin *-*-darwin* } }
|
||||
// { dg-require-cstdint "" }
|
||||
// { dg-require-gthreads "" }
|
||||
|
||||
// Copyright (C) 2012 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/>.
|
||||
|
||||
// PR libstdc++/53841
|
||||
|
||||
#include <chrono>
|
||||
#include <mutex>
|
||||
#include <condition_variable>
|
||||
|
||||
namespace ch = std::chrono;
|
||||
|
||||
struct FPClock : ch::system_clock
|
||||
{
|
||||
typedef double rep;
|
||||
typedef std::ratio<1> period;
|
||||
typedef ch::duration<rep, period> duration;
|
||||
typedef ch::time_point<FPClock> time_point;
|
||||
|
||||
static time_point now()
|
||||
{ return time_point(duration(system_clock::now().time_since_epoch())); }
|
||||
};
|
||||
|
||||
void f()
|
||||
{
|
||||
std::mutex mx;
|
||||
std::unique_lock<std::mutex> l(mx);
|
||||
std::condition_variable cv;
|
||||
cv.wait_until(l, FPClock::now());
|
||||
}
|
Loading…
Reference in New Issue
Block a user