diff options
| author | bstarynk <bstarynk@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-01-26 14:53:25 +0000 |
|---|---|---|
| committer | bstarynk <bstarynk@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-01-26 14:53:25 +0000 |
| commit | 9e1b949cce0f9ef70dcd4afbe5868e0d95df1281 (patch) | |
| tree | 137b86fc61b9e2f6e640c75c064cffb9b909e79a /libstdc++-v3/src/c++11/chrono.cc | |
| parent | 9b040c42465165aa265b581d597878f799c29ad0 (diff) | |
| download | gcc-9e1b949cce0f9ef70dcd4afbe5868e0d95df1281.tar.gz | |
2012-01-26 Basile Starynkevitch <basile@starynkevitch.net>
MELT branch merged with trunk rev 183561 using svnmerge
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/branches/melt-branch@183563 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libstdc++-v3/src/c++11/chrono.cc')
| -rw-r--r-- | libstdc++-v3/src/c++11/chrono.cc | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/libstdc++-v3/src/c++11/chrono.cc b/libstdc++-v3/src/c++11/chrono.cc new file mode 100644 index 00000000000..17b3402c76c --- /dev/null +++ b/libstdc++-v3/src/c++11/chrono.cc @@ -0,0 +1,83 @@ +// chrono -*- C++ -*- + +// Copyright (C) 2008, 2009, 2010, 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. + +// Under Section 7 of GPL version 3, you are granted additional +// permissions described in the GCC Runtime Library Exception, version +// 3.1, as published by the Free Software Foundation. + +// You should have received a copy of the GNU General Public License and +// a copy of the GCC Runtime Library Exception along with this program; +// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +// <http://www.gnu.org/licenses/>. + +#include <chrono> + +#ifdef _GLIBCXX_USE_C99_STDINT_TR1 + +// conditional inclusion of sys/time.h for gettimeofday +#if !defined(_GLIBCXX_USE_CLOCK_MONOTONIC) && \ + !defined(_GLIBCXX_USE_CLOCK_REALTIME) && \ + defined(_GLIBCXX_USE_GETTIMEOFDAY) +#include <sys/time.h> +#endif + +namespace std _GLIBCXX_VISIBILITY(default) +{ + namespace chrono + { + _GLIBCXX_BEGIN_NAMESPACE_VERSION + + constexpr bool system_clock::is_steady; + + system_clock::time_point + system_clock::now() noexcept + { +#ifdef _GLIBCXX_USE_CLOCK_REALTIME + timespec tp; + // -EINVAL, -EFAULT + clock_gettime(CLOCK_REALTIME, &tp); + return time_point(duration(chrono::seconds(tp.tv_sec) + + chrono::nanoseconds(tp.tv_nsec))); +#elif defined(_GLIBCXX_USE_GETTIMEOFDAY) + timeval tv; + // EINVAL, EFAULT + gettimeofday(&tv, 0); + return time_point(duration(chrono::seconds(tv.tv_sec) + + chrono::microseconds(tv.tv_usec))); +#else + std::time_t __sec = std::time(0); + return system_clock::from_time_t(__sec); +#endif + } + +#ifdef _GLIBCXX_USE_CLOCK_MONOTONIC + constexpr bool steady_clock::is_steady; + + steady_clock::time_point + steady_clock::now() noexcept + { + timespec tp; + // -EINVAL, -EFAULT + clock_gettime(CLOCK_MONOTONIC, &tp); + return time_point(duration(chrono::seconds(tp.tv_sec) + + chrono::nanoseconds(tp.tv_nsec))); + } +#endif + + _GLIBCXX_END_NAMESPACE_VERSION + } // namespace chrono +} // namespace std + +#endif // _GLIBCXX_USE_C99_STDINT_TR1 |