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ecency-mobile/ios/Pods/boost-for-react-native/boost/thread/pthread/condition_variable.hpp

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#ifndef BOOST_THREAD_CONDITION_VARIABLE_PTHREAD_HPP
#define BOOST_THREAD_CONDITION_VARIABLE_PTHREAD_HPP
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
// (C) Copyright 2007-10 Anthony Williams
// (C) Copyright 2011-2012 Vicente J. Botet Escriba
#include <boost/thread/pthread/timespec.hpp>
#include <boost/thread/pthread/pthread_mutex_scoped_lock.hpp>
#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
#include <boost/thread/pthread/thread_data.hpp>
#endif
#include <boost/thread/pthread/condition_variable_fwd.hpp>
#ifdef BOOST_THREAD_USES_CHRONO
#include <boost/chrono/system_clocks.hpp>
#include <boost/chrono/ceil.hpp>
#endif
#include <boost/thread/detail/delete.hpp>
#include <boost/config/abi_prefix.hpp>
namespace boost
{
#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
namespace this_thread
{
void BOOST_THREAD_DECL interruption_point();
}
#endif
namespace thread_cv_detail
{
template<typename MutexType>
struct lock_on_exit
{
MutexType* m;
lock_on_exit():
m(0)
{}
void activate(MutexType& m_)
{
m_.unlock();
m=&m_;
}
~lock_on_exit()
{
if(m)
{
m->lock();
}
}
};
}
inline void condition_variable::wait(unique_lock<mutex>& m)
{
#if defined BOOST_THREAD_THROW_IF_PRECONDITION_NOT_SATISFIED
if(! m.owns_lock())
{
boost::throw_exception(condition_error(-1, "boost::condition_variable::wait() failed precondition mutex not owned"));
}
#endif
int res=0;
{
#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
thread_cv_detail::lock_on_exit<unique_lock<mutex> > guard;
detail::interruption_checker check_for_interruption(&internal_mutex,&cond);
pthread_mutex_t* the_mutex = &internal_mutex;
guard.activate(m);
#else
pthread_mutex_t* the_mutex = m.mutex()->native_handle();
#endif
res = pthread_cond_wait(&cond,the_mutex);
}
#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
this_thread::interruption_point();
#endif
if(res && res != EINTR)
{
boost::throw_exception(condition_error(res, "boost::condition_variable::wait failed in pthread_cond_wait"));
}
}
inline bool condition_variable::do_wait_until(
unique_lock<mutex>& m,
struct timespec const &timeout)
{
#if defined BOOST_THREAD_THROW_IF_PRECONDITION_NOT_SATISFIED
if (!m.owns_lock())
{
boost::throw_exception(condition_error(EPERM, "boost::condition_variable::do_wait_until() failed precondition mutex not owned"));
}
#endif
int cond_res;
{
#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
thread_cv_detail::lock_on_exit<unique_lock<mutex> > guard;
detail::interruption_checker check_for_interruption(&internal_mutex,&cond);
pthread_mutex_t* the_mutex = &internal_mutex;
guard.activate(m);
#else
pthread_mutex_t* the_mutex = m.mutex()->native_handle();
#endif
cond_res=pthread_cond_timedwait(&cond,the_mutex,&timeout);
}
#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
this_thread::interruption_point();
#endif
if(cond_res==ETIMEDOUT)
{
return false;
}
if(cond_res)
{
boost::throw_exception(condition_error(cond_res, "boost::condition_variable::do_wait_until failed in pthread_cond_timedwait"));
}
return true;
}
inline void condition_variable::notify_one() BOOST_NOEXCEPT
{
#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
boost::pthread::pthread_mutex_scoped_lock internal_lock(&internal_mutex);
#endif
BOOST_VERIFY(!pthread_cond_signal(&cond));
}
inline void condition_variable::notify_all() BOOST_NOEXCEPT
{
#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
boost::pthread::pthread_mutex_scoped_lock internal_lock(&internal_mutex);
#endif
BOOST_VERIFY(!pthread_cond_broadcast(&cond));
}
class condition_variable_any
{
pthread_mutex_t internal_mutex;
pthread_cond_t cond;
public:
BOOST_THREAD_NO_COPYABLE(condition_variable_any)
condition_variable_any()
{
int const res=pthread_mutex_init(&internal_mutex,NULL);
if(res)
{
boost::throw_exception(thread_resource_error(res, "boost::condition_variable_any::condition_variable_any() failed in pthread_mutex_init"));
}
int const res2 = detail::monotonic_pthread_cond_init(cond);
if(res2)
{
BOOST_VERIFY(!pthread_mutex_destroy(&internal_mutex));
boost::throw_exception(thread_resource_error(res2, "boost::condition_variable_any::condition_variable_any() failed in detail::monotonic_pthread_cond_init"));
}
}
~condition_variable_any()
{
BOOST_VERIFY(!pthread_mutex_destroy(&internal_mutex));
BOOST_VERIFY(!pthread_cond_destroy(&cond));
}
template<typename lock_type>
void wait(lock_type& m)
{
int res=0;
{
thread_cv_detail::lock_on_exit<lock_type> guard;
#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
detail::interruption_checker check_for_interruption(&internal_mutex,&cond);
#else
boost::pthread::pthread_mutex_scoped_lock check_for_interruption(&internal_mutex);
#endif
guard.activate(m);
res=pthread_cond_wait(&cond,&internal_mutex);
}
#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
this_thread::interruption_point();
#endif
if(res)
{
boost::throw_exception(condition_error(res, "boost::condition_variable_any::wait() failed in pthread_cond_wait"));
}
}
template<typename lock_type,typename predicate_type>
void wait(lock_type& m,predicate_type pred)
{
while(!pred()) wait(m);
}
#if defined BOOST_THREAD_USES_DATETIME
template<typename lock_type>
bool timed_wait(lock_type& m,boost::system_time const& abs_time)
{
struct timespec const timeout=detail::to_timespec(abs_time);
return do_wait_until(m, timeout);
}
template<typename lock_type>
bool timed_wait(lock_type& m,xtime const& abs_time)
{
return timed_wait(m,system_time(abs_time));
}
template<typename lock_type,typename duration_type>
bool timed_wait(lock_type& m,duration_type const& wait_duration)
{
return timed_wait(m,get_system_time()+wait_duration);
}
template<typename lock_type,typename predicate_type>
bool timed_wait(lock_type& m,boost::system_time const& abs_time, predicate_type pred)
{
while (!pred())
{
if(!timed_wait(m, abs_time))
return pred();
}
return true;
}
template<typename lock_type,typename predicate_type>
bool timed_wait(lock_type& m,xtime const& abs_time, predicate_type pred)
{
return timed_wait(m,system_time(abs_time),pred);
}
template<typename lock_type,typename duration_type,typename predicate_type>
bool timed_wait(lock_type& m,duration_type const& wait_duration,predicate_type pred)
{
return timed_wait(m,get_system_time()+wait_duration,pred);
}
#endif
#ifndef BOOST_THREAD_HAS_CONDATTR_SET_CLOCK_MONOTONIC
#ifdef BOOST_THREAD_USES_CHRONO
template <class lock_type,class Duration>
cv_status
wait_until(
lock_type& lock,
const chrono::time_point<chrono::system_clock, Duration>& t)
{
using namespace chrono;
typedef time_point<system_clock, nanoseconds> nano_sys_tmpt;
wait_until(lock,
nano_sys_tmpt(ceil<nanoseconds>(t.time_since_epoch())));
return system_clock::now() < t ? cv_status::no_timeout :
cv_status::timeout;
}
template <class lock_type, class Clock, class Duration>
cv_status
wait_until(
lock_type& lock,
const chrono::time_point<Clock, Duration>& t)
{
using namespace chrono;
system_clock::time_point s_now = system_clock::now();
typename Clock::time_point c_now = Clock::now();
wait_until(lock, s_now + ceil<nanoseconds>(t - c_now));
return Clock::now() < t ? cv_status::no_timeout : cv_status::timeout;
}
template <class lock_type, class Rep, class Period>
cv_status
wait_for(
lock_type& lock,
const chrono::duration<Rep, Period>& d)
{
using namespace chrono;
system_clock::time_point s_now = system_clock::now();
steady_clock::time_point c_now = steady_clock::now();
wait_until(lock, s_now + ceil<nanoseconds>(d));
return steady_clock::now() - c_now < d ? cv_status::no_timeout :
cv_status::timeout;
}
template <class lock_type>
cv_status wait_until(
lock_type& lk,
chrono::time_point<chrono::system_clock, chrono::nanoseconds> tp)
{
using namespace chrono;
nanoseconds d = tp.time_since_epoch();
timespec ts = boost::detail::to_timespec(d);
if (do_wait_until(lk, ts)) return cv_status::no_timeout;
else return cv_status::timeout;
}
#endif
#else // defined BOOST_THREAD_HAS_CONDATTR_SET_CLOCK_MONOTONIC
#ifdef BOOST_THREAD_USES_CHRONO
template <class lock_type, class Duration>
cv_status
wait_until(
lock_type& lock,
const chrono::time_point<chrono::steady_clock, Duration>& t)
{
using namespace chrono;
typedef time_point<steady_clock, nanoseconds> nano_sys_tmpt;
wait_until(lock,
nano_sys_tmpt(ceil<nanoseconds>(t.time_since_epoch())));
return steady_clock::now() < t ? cv_status::no_timeout :
cv_status::timeout;
}
template <class lock_type, class Clock, class Duration>
cv_status
wait_until(
lock_type& lock,
const chrono::time_point<Clock, Duration>& t)
{
using namespace chrono;
steady_clock::time_point s_now = steady_clock::now();
typename Clock::time_point c_now = Clock::now();
wait_until(lock, s_now + ceil<nanoseconds>(t - c_now));
return Clock::now() < t ? cv_status::no_timeout : cv_status::timeout;
}
template <class lock_type, class Rep, class Period>
cv_status
wait_for(
lock_type& lock,
const chrono::duration<Rep, Period>& d)
{
using namespace chrono;
steady_clock::time_point c_now = steady_clock::now();
wait_until(lock, c_now + ceil<nanoseconds>(d));
return steady_clock::now() - c_now < d ? cv_status::no_timeout :
cv_status::timeout;
}
template <class lock_type>
inline cv_status wait_until(
lock_type& lock,
chrono::time_point<chrono::steady_clock, chrono::nanoseconds> tp)
{
using namespace chrono;
nanoseconds d = tp.time_since_epoch();
timespec ts = boost::detail::to_timespec(d);
if (do_wait_until(lock, ts)) return cv_status::no_timeout;
else return cv_status::timeout;
}
#endif
#endif // defined BOOST_THREAD_HAS_CONDATTR_SET_CLOCK_MONOTONIC
#ifdef BOOST_THREAD_USES_CHRONO
template <class lock_type, class Clock, class Duration, class Predicate>
bool
wait_until(
lock_type& lock,
const chrono::time_point<Clock, Duration>& t,
Predicate pred)
{
while (!pred())
{
if (wait_until(lock, t) == cv_status::timeout)
return pred();
}
return true;
}
template <class lock_type, class Rep, class Period, class Predicate>
bool
wait_for(
lock_type& lock,
const chrono::duration<Rep, Period>& d,
Predicate pred)
{
return wait_until(lock, chrono::steady_clock::now() + d, boost::move(pred));
}
#endif
void notify_one() BOOST_NOEXCEPT
{
boost::pthread::pthread_mutex_scoped_lock internal_lock(&internal_mutex);
BOOST_VERIFY(!pthread_cond_signal(&cond));
}
void notify_all() BOOST_NOEXCEPT
{
boost::pthread::pthread_mutex_scoped_lock internal_lock(&internal_mutex);
BOOST_VERIFY(!pthread_cond_broadcast(&cond));
}
private: // used by boost::thread::try_join_until
template <class lock_type>
bool do_wait_until(
lock_type& m,
struct timespec const &timeout)
{
int res=0;
{
thread_cv_detail::lock_on_exit<lock_type> guard;
#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
detail::interruption_checker check_for_interruption(&internal_mutex,&cond);
#else
boost::pthread::pthread_mutex_scoped_lock check_for_interruption(&internal_mutex);
#endif
guard.activate(m);
res=pthread_cond_timedwait(&cond,&internal_mutex,&timeout);
}
#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS
this_thread::interruption_point();
#endif
if(res==ETIMEDOUT)
{
return false;
}
if(res)
{
boost::throw_exception(condition_error(res, "boost::condition_variable_any::do_wait_until() failed in pthread_cond_timedwait"));
}
return true;
}
};
}
#include <boost/config/abi_suffix.hpp>
#endif
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