mirror of
https://github.com/ecency/ecency-mobile.git
synced 2024-12-23 13:22:02 +03:00
568 lines
18 KiB
C++
568 lines
18 KiB
C++
#ifndef BOOST_THREAD_CONDITION_VARIABLE_WIN32_HPP
|
|
#define BOOST_THREAD_CONDITION_VARIABLE_WIN32_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 2007-8 Anthony Williams
|
|
// (C) Copyright 2011-2012 Vicente J. Botet Escriba
|
|
|
|
#include <boost/thread/win32/thread_primitives.hpp>
|
|
#include <boost/thread/win32/thread_data.hpp>
|
|
#include <boost/thread/win32/thread_data.hpp>
|
|
#include <boost/thread/win32/interlocked_read.hpp>
|
|
#include <boost/thread/cv_status.hpp>
|
|
#if defined BOOST_THREAD_USES_DATETIME
|
|
#include <boost/thread/xtime.hpp>
|
|
#endif
|
|
#include <boost/thread/mutex.hpp>
|
|
#include <boost/thread/thread_time.hpp>
|
|
#include <boost/thread/lock_guard.hpp>
|
|
#include <boost/thread/lock_types.hpp>
|
|
|
|
#include <boost/assert.hpp>
|
|
#include <boost/intrusive_ptr.hpp>
|
|
|
|
#ifdef BOOST_THREAD_USES_CHRONO
|
|
#include <boost/chrono/system_clocks.hpp>
|
|
#include <boost/chrono/ceil.hpp>
|
|
#endif
|
|
|
|
#include <limits.h>
|
|
#include <algorithm>
|
|
#include <vector>
|
|
|
|
#include <boost/config/abi_prefix.hpp>
|
|
|
|
namespace boost
|
|
{
|
|
namespace detail
|
|
{
|
|
class basic_cv_list_entry;
|
|
void intrusive_ptr_add_ref(basic_cv_list_entry * p);
|
|
void intrusive_ptr_release(basic_cv_list_entry * p);
|
|
|
|
class basic_cv_list_entry
|
|
{
|
|
private:
|
|
detail::win32::handle_manager semaphore;
|
|
detail::win32::handle_manager wake_sem;
|
|
long waiters;
|
|
bool notified;
|
|
long references;
|
|
|
|
public:
|
|
BOOST_THREAD_NO_COPYABLE(basic_cv_list_entry)
|
|
explicit basic_cv_list_entry(detail::win32::handle_manager const& wake_sem_):
|
|
semaphore(detail::win32::create_anonymous_semaphore(0,LONG_MAX)),
|
|
wake_sem(wake_sem_.duplicate()),
|
|
waiters(1),notified(false),references(0)
|
|
{}
|
|
|
|
static bool no_waiters(boost::intrusive_ptr<basic_cv_list_entry> const& entry)
|
|
{
|
|
return !detail::interlocked_read_acquire(&entry->waiters);
|
|
}
|
|
|
|
void add_waiter()
|
|
{
|
|
BOOST_INTERLOCKED_INCREMENT(&waiters);
|
|
}
|
|
|
|
void remove_waiter()
|
|
{
|
|
BOOST_INTERLOCKED_DECREMENT(&waiters);
|
|
}
|
|
|
|
void release(unsigned count_to_release)
|
|
{
|
|
notified=true;
|
|
detail::win32::ReleaseSemaphore(semaphore,count_to_release,0);
|
|
}
|
|
|
|
void release_waiters()
|
|
{
|
|
release(detail::interlocked_read_acquire(&waiters));
|
|
}
|
|
|
|
bool is_notified() const
|
|
{
|
|
return notified;
|
|
}
|
|
|
|
bool wait(timeout abs_time)
|
|
{
|
|
return this_thread::interruptible_wait(semaphore,abs_time);
|
|
}
|
|
|
|
bool woken()
|
|
{
|
|
unsigned long const woken_result=detail::win32::WaitForSingleObjectEx(wake_sem,0,0);
|
|
BOOST_ASSERT((woken_result==detail::win32::timeout) || (woken_result==0));
|
|
return woken_result==0;
|
|
}
|
|
|
|
friend void intrusive_ptr_add_ref(basic_cv_list_entry * p);
|
|
friend void intrusive_ptr_release(basic_cv_list_entry * p);
|
|
};
|
|
|
|
inline void intrusive_ptr_add_ref(basic_cv_list_entry * p)
|
|
{
|
|
BOOST_INTERLOCKED_INCREMENT(&p->references);
|
|
}
|
|
|
|
inline void intrusive_ptr_release(basic_cv_list_entry * p)
|
|
{
|
|
if(!BOOST_INTERLOCKED_DECREMENT(&p->references))
|
|
{
|
|
delete p;
|
|
}
|
|
}
|
|
|
|
class basic_condition_variable
|
|
{
|
|
boost::mutex internal_mutex;
|
|
long total_count;
|
|
unsigned active_generation_count;
|
|
|
|
typedef basic_cv_list_entry list_entry;
|
|
|
|
typedef boost::intrusive_ptr<list_entry> entry_ptr;
|
|
typedef std::vector<entry_ptr> generation_list;
|
|
|
|
generation_list generations;
|
|
detail::win32::handle_manager wake_sem;
|
|
|
|
void wake_waiters(long count_to_wake)
|
|
{
|
|
detail::interlocked_write_release(&total_count,total_count-count_to_wake);
|
|
detail::win32::ReleaseSemaphore(wake_sem,count_to_wake,0);
|
|
}
|
|
|
|
template<typename lock_type>
|
|
struct relocker
|
|
{
|
|
BOOST_THREAD_NO_COPYABLE(relocker)
|
|
lock_type& lock;
|
|
bool unlocked;
|
|
|
|
relocker(lock_type& lock_):
|
|
lock(lock_),unlocked(false)
|
|
{}
|
|
void unlock()
|
|
{
|
|
lock.unlock();
|
|
unlocked=true;
|
|
}
|
|
~relocker()
|
|
{
|
|
if(unlocked)
|
|
{
|
|
lock.lock();
|
|
}
|
|
|
|
}
|
|
};
|
|
|
|
|
|
entry_ptr get_wait_entry()
|
|
{
|
|
boost::lock_guard<boost::mutex> internal_lock(internal_mutex);
|
|
|
|
if(!wake_sem)
|
|
{
|
|
wake_sem=detail::win32::create_anonymous_semaphore(0,LONG_MAX);
|
|
BOOST_ASSERT(wake_sem);
|
|
}
|
|
|
|
detail::interlocked_write_release(&total_count,total_count+1);
|
|
if(generations.empty() || generations.back()->is_notified())
|
|
{
|
|
entry_ptr new_entry(new list_entry(wake_sem));
|
|
generations.push_back(new_entry);
|
|
return new_entry;
|
|
}
|
|
else
|
|
{
|
|
generations.back()->add_waiter();
|
|
return generations.back();
|
|
}
|
|
}
|
|
|
|
struct entry_manager
|
|
{
|
|
entry_ptr const entry;
|
|
boost::mutex& internal_mutex;
|
|
|
|
BOOST_THREAD_NO_COPYABLE(entry_manager)
|
|
entry_manager(entry_ptr const& entry_, boost::mutex& mutex_):
|
|
entry(entry_), internal_mutex(mutex_)
|
|
{}
|
|
|
|
~entry_manager()
|
|
{
|
|
boost::lock_guard<boost::mutex> internal_lock(internal_mutex);
|
|
entry->remove_waiter();
|
|
}
|
|
|
|
list_entry* operator->()
|
|
{
|
|
return entry.get();
|
|
}
|
|
};
|
|
|
|
|
|
protected:
|
|
template<typename lock_type>
|
|
bool do_wait(lock_type& lock,timeout abs_time)
|
|
{
|
|
relocker<lock_type> locker(lock);
|
|
|
|
entry_manager entry(get_wait_entry(), internal_mutex);
|
|
|
|
locker.unlock();
|
|
|
|
bool woken=false;
|
|
while(!woken)
|
|
{
|
|
if(!entry->wait(abs_time))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
woken=entry->woken();
|
|
}
|
|
return woken;
|
|
}
|
|
|
|
template<typename lock_type,typename predicate_type>
|
|
bool do_wait(lock_type& m,timeout const& abs_time,predicate_type pred)
|
|
{
|
|
while (!pred())
|
|
{
|
|
if(!do_wait(m, abs_time))
|
|
return pred();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
basic_condition_variable(const basic_condition_variable& other);
|
|
basic_condition_variable& operator=(const basic_condition_variable& other);
|
|
|
|
public:
|
|
basic_condition_variable():
|
|
total_count(0),active_generation_count(0),wake_sem(0)
|
|
{}
|
|
|
|
~basic_condition_variable()
|
|
{}
|
|
|
|
void notify_one() BOOST_NOEXCEPT
|
|
{
|
|
if(detail::interlocked_read_acquire(&total_count))
|
|
{
|
|
boost::lock_guard<boost::mutex> internal_lock(internal_mutex);
|
|
if(!total_count)
|
|
{
|
|
return;
|
|
}
|
|
wake_waiters(1);
|
|
|
|
for(generation_list::iterator it=generations.begin(),
|
|
end=generations.end();
|
|
it!=end;++it)
|
|
{
|
|
(*it)->release(1);
|
|
}
|
|
generations.erase(std::remove_if(generations.begin(),generations.end(),&basic_cv_list_entry::no_waiters),generations.end());
|
|
}
|
|
}
|
|
|
|
void notify_all() BOOST_NOEXCEPT
|
|
{
|
|
if(detail::interlocked_read_acquire(&total_count))
|
|
{
|
|
boost::lock_guard<boost::mutex> internal_lock(internal_mutex);
|
|
if(!total_count)
|
|
{
|
|
return;
|
|
}
|
|
wake_waiters(total_count);
|
|
for(generation_list::iterator it=generations.begin(),
|
|
end=generations.end();
|
|
it!=end;++it)
|
|
{
|
|
(*it)->release_waiters();
|
|
}
|
|
generations.clear();
|
|
wake_sem=detail::win32::handle(0);
|
|
}
|
|
}
|
|
|
|
};
|
|
}
|
|
|
|
class condition_variable:
|
|
private detail::basic_condition_variable
|
|
{
|
|
public:
|
|
BOOST_THREAD_NO_COPYABLE(condition_variable)
|
|
condition_variable()
|
|
{}
|
|
|
|
using detail::basic_condition_variable::notify_one;
|
|
using detail::basic_condition_variable::notify_all;
|
|
|
|
void wait(unique_lock<mutex>& m)
|
|
{
|
|
do_wait(m,detail::timeout::sentinel());
|
|
}
|
|
|
|
template<typename predicate_type>
|
|
void wait(unique_lock<mutex>& m,predicate_type pred)
|
|
{
|
|
while(!pred()) wait(m);
|
|
}
|
|
|
|
|
|
#if defined BOOST_THREAD_USES_DATETIME
|
|
bool timed_wait(unique_lock<mutex>& m,boost::system_time const& abs_time)
|
|
{
|
|
return do_wait(m,abs_time);
|
|
}
|
|
|
|
bool timed_wait(unique_lock<mutex>& m,boost::xtime const& abs_time)
|
|
{
|
|
return do_wait(m,system_time(abs_time));
|
|
}
|
|
template<typename duration_type>
|
|
bool timed_wait(unique_lock<mutex>& m,duration_type const& wait_duration)
|
|
{
|
|
if (wait_duration.is_pos_infinity())
|
|
{
|
|
wait(m); // or do_wait(m,detail::timeout::sentinel());
|
|
return true;
|
|
}
|
|
if (wait_duration.is_special())
|
|
{
|
|
return true;
|
|
}
|
|
return do_wait(m,wait_duration.total_milliseconds());
|
|
}
|
|
|
|
template<typename predicate_type>
|
|
bool timed_wait(unique_lock<mutex>& m,boost::system_time const& abs_time,predicate_type pred)
|
|
{
|
|
return do_wait(m,abs_time,pred);
|
|
}
|
|
template<typename predicate_type>
|
|
bool timed_wait(unique_lock<mutex>& m,boost::xtime const& abs_time,predicate_type pred)
|
|
{
|
|
return do_wait(m,system_time(abs_time),pred);
|
|
}
|
|
template<typename duration_type,typename predicate_type>
|
|
bool timed_wait(unique_lock<mutex>& m,duration_type const& wait_duration,predicate_type pred)
|
|
{
|
|
if (wait_duration.is_pos_infinity())
|
|
{
|
|
while (!pred())
|
|
{
|
|
wait(m); // or do_wait(m,detail::timeout::sentinel());
|
|
}
|
|
return true;
|
|
}
|
|
if (wait_duration.is_special())
|
|
{
|
|
return pred();
|
|
}
|
|
return do_wait(m,wait_duration.total_milliseconds(),pred);
|
|
}
|
|
#endif
|
|
#ifdef BOOST_THREAD_USES_CHRONO
|
|
|
|
template <class Clock, class Duration>
|
|
cv_status
|
|
wait_until(
|
|
unique_lock<mutex>& lock,
|
|
const chrono::time_point<Clock, Duration>& t)
|
|
{
|
|
using namespace chrono;
|
|
chrono::time_point<Clock, Duration> now = Clock::now();
|
|
if (t<=now) {
|
|
return cv_status::timeout;
|
|
}
|
|
do_wait(lock, ceil<milliseconds>(t-now).count());
|
|
return Clock::now() < t ? cv_status::no_timeout :
|
|
cv_status::timeout;
|
|
}
|
|
|
|
template <class Rep, class Period>
|
|
cv_status
|
|
wait_for(
|
|
unique_lock<mutex>& lock,
|
|
const chrono::duration<Rep, Period>& d)
|
|
{
|
|
using namespace chrono;
|
|
if (d<=chrono::duration<Rep, Period>::zero()) {
|
|
return cv_status::timeout;
|
|
}
|
|
|
|
steady_clock::time_point c_now = steady_clock::now();
|
|
do_wait(lock, ceil<milliseconds>(d).count());
|
|
return steady_clock::now() - c_now < d ? cv_status::no_timeout :
|
|
cv_status::timeout;
|
|
}
|
|
|
|
template <class Clock, class Duration, class Predicate>
|
|
bool
|
|
wait_until(
|
|
unique_lock<mutex>& 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 Rep, class Period, class Predicate>
|
|
bool
|
|
wait_for(
|
|
unique_lock<mutex>& lock,
|
|
const chrono::duration<Rep, Period>& d,
|
|
Predicate pred)
|
|
{
|
|
return wait_until(lock, chrono::steady_clock::now() + d, boost::move(pred));
|
|
}
|
|
#endif
|
|
};
|
|
|
|
class condition_variable_any:
|
|
private detail::basic_condition_variable
|
|
{
|
|
public:
|
|
BOOST_THREAD_NO_COPYABLE(condition_variable_any)
|
|
condition_variable_any()
|
|
{}
|
|
|
|
using detail::basic_condition_variable::notify_one;
|
|
using detail::basic_condition_variable::notify_all;
|
|
|
|
template<typename lock_type>
|
|
void wait(lock_type& m)
|
|
{
|
|
do_wait(m,detail::timeout::sentinel());
|
|
}
|
|
|
|
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)
|
|
{
|
|
return do_wait(m,abs_time);
|
|
}
|
|
|
|
template<typename lock_type>
|
|
bool timed_wait(lock_type& m,boost::xtime const& abs_time)
|
|
{
|
|
return do_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 do_wait(m,wait_duration.total_milliseconds());
|
|
}
|
|
|
|
template<typename lock_type,typename predicate_type>
|
|
bool timed_wait(lock_type& m,boost::system_time const& abs_time,predicate_type pred)
|
|
{
|
|
return do_wait(m,abs_time,pred);
|
|
}
|
|
|
|
template<typename lock_type,typename predicate_type>
|
|
bool timed_wait(lock_type& m,boost::xtime const& abs_time,predicate_type pred)
|
|
{
|
|
return do_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 do_wait(m,wait_duration.total_milliseconds(),pred);
|
|
}
|
|
#endif
|
|
#ifdef BOOST_THREAD_USES_CHRONO
|
|
|
|
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;
|
|
chrono::time_point<Clock, Duration> now = Clock::now();
|
|
if (t<=now) {
|
|
return cv_status::timeout;
|
|
}
|
|
do_wait(lock, ceil<milliseconds>(t-now).count());
|
|
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;
|
|
if (d<=chrono::duration<Rep, Period>::zero()) {
|
|
return cv_status::timeout;
|
|
}
|
|
steady_clock::time_point c_now = steady_clock::now();
|
|
do_wait(lock, ceil<milliseconds>(d).count());
|
|
return steady_clock::now() - c_now < d ? cv_status::no_timeout :
|
|
cv_status::timeout;
|
|
}
|
|
|
|
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
|
|
};
|
|
|
|
BOOST_THREAD_DECL void notify_all_at_thread_exit(condition_variable& cond, unique_lock<mutex> lk);
|
|
}
|
|
|
|
#include <boost/config/abi_suffix.hpp>
|
|
|
|
#endif
|