X-Git-Url: http://git.osdn.net/view?a=blobdiff_plain;f=ndk%2Fandroid-ndk-r6%2Fsources%2Fcxx-stl%2Fgnu-libstdc%2B%2B%2Finclude%2Fcondition_variable;fp=ndk%2Fandroid-ndk-r6%2Fsources%2Fcxx-stl%2Fgnu-libstdc%2B%2B%2Finclude%2Fcondition_variable;h=64f2bb7711883ab236823e8eb853b34e7575a0cf;hb=ae8ddbace5b5cabc96f8b12120e87d9e4d7e9176;hp=0000000000000000000000000000000000000000;hpb=a7f8648da556c3c8535e062720b72780897e118c;p=android-x86%2Fprebuilt.git diff --git a/ndk/android-ndk-r6/sources/cxx-stl/gnu-libstdc++/include/condition_variable b/ndk/android-ndk-r6/sources/cxx-stl/gnu-libstdc++/include/condition_variable new file mode 100644 index 0000000..64f2bb7 --- /dev/null +++ b/ndk/android-ndk-r6/sources/cxx-stl/gnu-libstdc++/include/condition_variable @@ -0,0 +1,225 @@ +// -*- C++ -*- + +// Copyright (C) 2008, 2009 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 +// . + +/** @file condition_variable + * This is a Standard C++ Library header. + */ + +#ifndef _GLIBCXX_CONDITION_VARIABLE +#define _GLIBCXX_CONDITION_VARIABLE 1 + +#pragma GCC system_header + +#ifndef __GXX_EXPERIMENTAL_CXX0X__ +# include +#else + +#include +#include // unique_lock + +#if defined(_GLIBCXX_HAS_GTHREADS) && defined(_GLIBCXX_USE_C99_STDINT_TR1) + +namespace std +{ + /** + * @defgroup condition_variables Condition Variables + * @ingroup concurrency + * + * Classes for condition_variable support. + * @{ + */ + + /// condition_variable + class condition_variable + { + typedef chrono::system_clock __clock_t; + typedef __gthread_cond_t __native_type; + __native_type _M_cond; + + public: + typedef __native_type* native_handle_type; + + condition_variable(); + ~condition_variable(); + + condition_variable(const condition_variable&) = delete; + condition_variable& operator=(const condition_variable&) = delete; + + void + notify_one(); + + void + notify_all(); + + void + wait(unique_lock& __lock); + + template + void + wait(unique_lock& __lock, _Predicate __p) + { + while (!__p()) + wait(__lock); + } + + template + bool + wait_until(unique_lock& __lock, + const chrono::time_point<__clock_t, _Duration>& __atime) + { return __wait_until_impl(__lock, __atime); } + + template + bool + wait_until(unique_lock& __lock, + const chrono::time_point<_Clock, _Duration>& __atime) + { + // DR 887 - Sync unknown clock to known clock. + typename _Clock::time_point __c_entry = _Clock::now(); + __clock_t::time_point __s_entry = __clock_t::now(); + chrono::nanoseconds __delta = __atime - __c_entry; + __clock_t::time_point __s_atime = __s_entry + __delta; + + return __wait_until_impl(__lock, __s_atime); + } + + template + bool + wait_until(unique_lock& __lock, + const chrono::time_point<_Clock, _Duration>& __atime, + _Predicate __p) + { + while (!__p()) + if (!wait_until(__lock, __atime)) + return __p(); + + return true; + } + + template + bool + wait_for(unique_lock& __lock, + const chrono::duration<_Rep, _Period>& __rtime) + { return wait_until(__lock, __clock_t::now() + __rtime); } + + template + bool + wait_for(unique_lock& __lock, + const chrono::duration<_Rep, _Period>& __rtime, + _Predicate __p) + { return wait_until(__lock, __clock_t::now() + __rtime, std::move(__p)); } + + native_handle_type + native_handle() + { return &_M_cond; } + + private: + template + bool + __wait_until_impl(unique_lock& __lock, + const chrono::time_point<_Clock, _Duration>& __atime) + { + chrono::time_point<__clock_t, chrono::seconds> __s = + chrono::time_point_cast(__atime); + + chrono::nanoseconds __ns = + chrono::duration_cast(__atime - __s); + + __gthread_time_t __ts = + { + static_cast(__s.time_since_epoch().count()), + static_cast(__ns.count()) + }; + + __gthread_cond_timedwait(&_M_cond, __lock.mutex()->native_handle(), + &__ts); + + return _Clock::now() < __atime; + } + }; + + /// condition_variable_any + // Like above, only mutex may not have try_lock. + class condition_variable_any + { + typedef __gthread_cond_t __native_type; + __native_type _M_cond; + + public: + typedef __native_type* native_handle_type; + + condition_variable_any(); + ~condition_variable_any(); + + condition_variable_any(const condition_variable_any&) = delete; + condition_variable_any& operator=(const condition_variable_any&) = delete; + + void + notify_one(); + + void + notify_all(); + + template + void + wait(_Lock& __lock); + + template + void + wait(_Lock& __lock, _Predicate __p); + + template + bool + wait_until(_Lock& __lock, + const chrono::time_point<_Clock, _Duration>& __atime); + + template + bool + wait_until(_Lock& __lock, + const chrono::time_point<_Clock, _Duration>& __atime, + _Predicate __p); + + template + bool + wait_for(_Lock& __lock, const chrono::duration<_Rep, _Period>& __rtime); + + template + bool + wait_for(_Lock& __lock, + const chrono::duration<_Rep, _Period>& __rtime, _Predicate __p); + + native_handle_type + native_handle() + { return &_M_cond; } + }; + + // @} group condition_variables +} + +#endif // _GLIBCXX_HAS_GTHREADS && _GLIBCXX_USE_C99_STDINT_TR1 + +#endif // __GXX_EXPERIMENTAL_CXX0X__ + +#endif // _GLIBCXX_CONDITION_VARIABLE