mirror of
https://git.suyu.dev/suyu/ext-boost.git
synced 2026-01-09 07:58:10 +01:00
externals: Update boost to 1.72 and add Boost Context
This commit is contained in:
Fernando Sahmkow
parent
5e8300b76a
commit
77abe07b3b
618 changed files with 96299 additions and 14263 deletions
541
boost/thread/pthread/once.hpp
Normal file
541
boost/thread/pthread/once.hpp
Normal file
|
|
@ -0,0 +1,541 @@
|
|||
#ifndef BOOST_THREAD_PTHREAD_ONCE_HPP
|
||||
#define BOOST_THREAD_PTHREAD_ONCE_HPP
|
||||
|
||||
// once.hpp
|
||||
//
|
||||
// (C) Copyright 2007-8 Anthony Williams
|
||||
// (C) Copyright 2011-2012 Vicente J. Botet Escriba
|
||||
//
|
||||
// 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)
|
||||
|
||||
#include <boost/thread/detail/config.hpp>
|
||||
#include <boost/thread/detail/move.hpp>
|
||||
#include <boost/thread/detail/invoke.hpp>
|
||||
|
||||
#include <boost/thread/pthread/pthread_helpers.hpp>
|
||||
#include <boost/thread/pthread/pthread_mutex_scoped_lock.hpp>
|
||||
#include <boost/thread/detail/delete.hpp>
|
||||
#include <boost/core/no_exceptions_support.hpp>
|
||||
|
||||
#include <boost/bind.hpp>
|
||||
#include <boost/assert.hpp>
|
||||
#include <boost/config/abi_prefix.hpp>
|
||||
|
||||
#include <boost/cstdint.hpp>
|
||||
#include <pthread.h>
|
||||
#include <csignal>
|
||||
|
||||
namespace boost
|
||||
{
|
||||
|
||||
struct once_flag;
|
||||
|
||||
#define BOOST_ONCE_INITIAL_FLAG_VALUE 0
|
||||
|
||||
namespace thread_detail
|
||||
{
|
||||
typedef boost::uint32_t uintmax_atomic_t;
|
||||
#define BOOST_THREAD_DETAIL_UINTMAX_ATOMIC_C2(value) value##u
|
||||
#define BOOST_THREAD_DETAIL_UINTMAX_ATOMIC_MAX_C BOOST_THREAD_DETAIL_UINTMAX_ATOMIC_C2(~0)
|
||||
|
||||
}
|
||||
|
||||
#ifdef BOOST_THREAD_PROVIDES_ONCE_CXX11
|
||||
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
|
||||
template<typename Function, class ...ArgTypes>
|
||||
inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(ArgTypes)... args);
|
||||
#else
|
||||
template<typename Function>
|
||||
inline void call_once(once_flag& flag, Function f);
|
||||
template<typename Function, typename T1>
|
||||
inline void call_once(once_flag& flag, Function f, T1 p1);
|
||||
template<typename Function, typename T1, typename T2>
|
||||
inline void call_once(once_flag& flag, Function f, T1 p1, T2 p2);
|
||||
template<typename Function, typename T1, typename T2, typename T3>
|
||||
inline void call_once(once_flag& flag, Function f, T1 p1, T2 p2, T3 p3);
|
||||
#endif
|
||||
|
||||
struct once_flag
|
||||
{
|
||||
BOOST_THREAD_NO_COPYABLE(once_flag)
|
||||
BOOST_CONSTEXPR once_flag() BOOST_NOEXCEPT
|
||||
: epoch(BOOST_ONCE_INITIAL_FLAG_VALUE)
|
||||
{}
|
||||
private:
|
||||
volatile thread_detail::uintmax_atomic_t epoch;
|
||||
|
||||
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
|
||||
template<typename Function, class ...ArgTypes>
|
||||
friend void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(ArgTypes)... args);
|
||||
#else
|
||||
template<typename Function>
|
||||
friend void call_once(once_flag& flag, Function f);
|
||||
template<typename Function, typename T1>
|
||||
friend void call_once(once_flag& flag, Function f, T1 p1);
|
||||
template<typename Function, typename T1, typename T2>
|
||||
friend void call_once(once_flag& flag, Function f, T1 p1, T2 p2);
|
||||
template<typename Function, typename T1, typename T2, typename T3>
|
||||
friend void call_once(once_flag& flag, Function f, T1 p1, T2 p2, T3 p3);
|
||||
|
||||
#endif
|
||||
|
||||
};
|
||||
|
||||
#define BOOST_ONCE_INIT once_flag()
|
||||
|
||||
#else // BOOST_THREAD_PROVIDES_ONCE_CXX11
|
||||
|
||||
struct once_flag
|
||||
{
|
||||
volatile thread_detail::uintmax_atomic_t epoch;
|
||||
};
|
||||
|
||||
#define BOOST_ONCE_INIT {BOOST_ONCE_INITIAL_FLAG_VALUE}
|
||||
#endif // BOOST_THREAD_PROVIDES_ONCE_CXX11
|
||||
|
||||
|
||||
#if defined BOOST_THREAD_PROVIDES_INVOKE
|
||||
#define BOOST_THREAD_INVOKE_RET_VOID detail::invoke
|
||||
#define BOOST_THREAD_INVOKE_RET_VOID_CALL
|
||||
#elif defined BOOST_THREAD_PROVIDES_INVOKE_RET
|
||||
#define BOOST_THREAD_INVOKE_RET_VOID detail::invoke<void>
|
||||
#define BOOST_THREAD_INVOKE_RET_VOID_CALL
|
||||
#else
|
||||
#define BOOST_THREAD_INVOKE_RET_VOID boost::bind
|
||||
#define BOOST_THREAD_INVOKE_RET_VOID_CALL ()
|
||||
#endif
|
||||
|
||||
namespace thread_detail
|
||||
{
|
||||
BOOST_THREAD_DECL uintmax_atomic_t& get_once_per_thread_epoch();
|
||||
BOOST_THREAD_DECL extern uintmax_atomic_t once_global_epoch;
|
||||
BOOST_THREAD_DECL extern pthread_mutex_t once_epoch_mutex;
|
||||
BOOST_THREAD_DECL extern pthread_cond_t once_epoch_cv;
|
||||
}
|
||||
|
||||
// Based on Mike Burrows fast_pthread_once algorithm as described in
|
||||
// http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2444.html
|
||||
|
||||
|
||||
#if !defined(BOOST_NO_CXX11_VARIADIC_TEMPLATES) && !defined(BOOST_NO_CXX11_RVALUE_REFERENCES)
|
||||
|
||||
|
||||
template<typename Function, class ...ArgTypes>
|
||||
inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(ArgTypes)... args)
|
||||
{
|
||||
static thread_detail::uintmax_atomic_t const uninitialized_flag=BOOST_ONCE_INITIAL_FLAG_VALUE;
|
||||
static thread_detail::uintmax_atomic_t const being_initialized=uninitialized_flag+1;
|
||||
thread_detail::uintmax_atomic_t const epoch=flag.epoch;
|
||||
thread_detail::uintmax_atomic_t& this_thread_epoch=thread_detail::get_once_per_thread_epoch();
|
||||
|
||||
if(epoch<this_thread_epoch)
|
||||
{
|
||||
pthread::pthread_mutex_scoped_lock lk(&thread_detail::once_epoch_mutex);
|
||||
|
||||
while(flag.epoch<=being_initialized)
|
||||
{
|
||||
if(flag.epoch==uninitialized_flag)
|
||||
{
|
||||
flag.epoch=being_initialized;
|
||||
BOOST_TRY
|
||||
{
|
||||
pthread::pthread_mutex_scoped_unlock relocker(&thread_detail::once_epoch_mutex);
|
||||
BOOST_THREAD_INVOKE_RET_VOID(
|
||||
thread_detail::decay_copy(boost::forward<Function>(f)),
|
||||
thread_detail::decay_copy(boost::forward<ArgTypes>(args))...
|
||||
) BOOST_THREAD_INVOKE_RET_VOID_CALL;
|
||||
}
|
||||
BOOST_CATCH (...)
|
||||
{
|
||||
flag.epoch=uninitialized_flag;
|
||||
BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
|
||||
BOOST_RETHROW
|
||||
}
|
||||
BOOST_CATCH_END
|
||||
flag.epoch=--thread_detail::once_global_epoch;
|
||||
BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
|
||||
}
|
||||
else
|
||||
{
|
||||
while(flag.epoch==being_initialized)
|
||||
{
|
||||
BOOST_VERIFY(!posix::pthread_cond_wait(&thread_detail::once_epoch_cv,&thread_detail::once_epoch_mutex));
|
||||
}
|
||||
}
|
||||
}
|
||||
this_thread_epoch=thread_detail::once_global_epoch;
|
||||
|
||||
}
|
||||
}
|
||||
#else
|
||||
template<typename Function>
|
||||
inline void call_once(once_flag& flag, Function f)
|
||||
{
|
||||
static thread_detail::uintmax_atomic_t const uninitialized_flag=BOOST_ONCE_INITIAL_FLAG_VALUE;
|
||||
static thread_detail::uintmax_atomic_t const being_initialized=uninitialized_flag+1;
|
||||
thread_detail::uintmax_atomic_t const epoch=flag.epoch;
|
||||
thread_detail::uintmax_atomic_t& this_thread_epoch=thread_detail::get_once_per_thread_epoch();
|
||||
|
||||
if(epoch<this_thread_epoch)
|
||||
{
|
||||
pthread::pthread_mutex_scoped_lock lk(&thread_detail::once_epoch_mutex);
|
||||
|
||||
while(flag.epoch<=being_initialized)
|
||||
{
|
||||
if(flag.epoch==uninitialized_flag)
|
||||
{
|
||||
flag.epoch=being_initialized;
|
||||
BOOST_TRY
|
||||
{
|
||||
pthread::pthread_mutex_scoped_unlock relocker(&thread_detail::once_epoch_mutex);
|
||||
f();
|
||||
}
|
||||
BOOST_CATCH (...)
|
||||
{
|
||||
flag.epoch=uninitialized_flag;
|
||||
BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
|
||||
BOOST_RETHROW
|
||||
}
|
||||
BOOST_CATCH_END
|
||||
flag.epoch=--thread_detail::once_global_epoch;
|
||||
BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
|
||||
}
|
||||
else
|
||||
{
|
||||
while(flag.epoch==being_initialized)
|
||||
{
|
||||
BOOST_VERIFY(!posix::pthread_cond_wait(&thread_detail::once_epoch_cv,&thread_detail::once_epoch_mutex));
|
||||
}
|
||||
}
|
||||
}
|
||||
this_thread_epoch=thread_detail::once_global_epoch;
|
||||
}
|
||||
}
|
||||
|
||||
template<typename Function, typename T1>
|
||||
inline void call_once(once_flag& flag, Function f, T1 p1)
|
||||
{
|
||||
static thread_detail::uintmax_atomic_t const uninitialized_flag=BOOST_ONCE_INITIAL_FLAG_VALUE;
|
||||
static thread_detail::uintmax_atomic_t const being_initialized=uninitialized_flag+1;
|
||||
thread_detail::uintmax_atomic_t const epoch=flag.epoch;
|
||||
thread_detail::uintmax_atomic_t& this_thread_epoch=thread_detail::get_once_per_thread_epoch();
|
||||
|
||||
if(epoch<this_thread_epoch)
|
||||
{
|
||||
pthread::pthread_mutex_scoped_lock lk(&thread_detail::once_epoch_mutex);
|
||||
|
||||
while(flag.epoch<=being_initialized)
|
||||
{
|
||||
if(flag.epoch==uninitialized_flag)
|
||||
{
|
||||
flag.epoch=being_initialized;
|
||||
BOOST_TRY
|
||||
{
|
||||
pthread::pthread_mutex_scoped_unlock relocker(&thread_detail::once_epoch_mutex);
|
||||
BOOST_THREAD_INVOKE_RET_VOID(f,p1) BOOST_THREAD_INVOKE_RET_VOID_CALL;
|
||||
}
|
||||
BOOST_CATCH (...)
|
||||
{
|
||||
flag.epoch=uninitialized_flag;
|
||||
BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
|
||||
BOOST_RETHROW
|
||||
}
|
||||
BOOST_CATCH_END
|
||||
flag.epoch=--thread_detail::once_global_epoch;
|
||||
BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
|
||||
}
|
||||
else
|
||||
{
|
||||
while(flag.epoch==being_initialized)
|
||||
{
|
||||
BOOST_VERIFY(!posix::pthread_cond_wait(&thread_detail::once_epoch_cv,&thread_detail::once_epoch_mutex));
|
||||
}
|
||||
}
|
||||
}
|
||||
this_thread_epoch=thread_detail::once_global_epoch;
|
||||
}
|
||||
}
|
||||
template<typename Function, typename T1, typename T2>
|
||||
inline void call_once(once_flag& flag, Function f, T1 p1, T2 p2)
|
||||
{
|
||||
static thread_detail::uintmax_atomic_t const uninitialized_flag=BOOST_ONCE_INITIAL_FLAG_VALUE;
|
||||
static thread_detail::uintmax_atomic_t const being_initialized=uninitialized_flag+1;
|
||||
thread_detail::uintmax_atomic_t const epoch=flag.epoch;
|
||||
thread_detail::uintmax_atomic_t& this_thread_epoch=thread_detail::get_once_per_thread_epoch();
|
||||
|
||||
if(epoch<this_thread_epoch)
|
||||
{
|
||||
pthread::pthread_mutex_scoped_lock lk(&thread_detail::once_epoch_mutex);
|
||||
|
||||
while(flag.epoch<=being_initialized)
|
||||
{
|
||||
if(flag.epoch==uninitialized_flag)
|
||||
{
|
||||
flag.epoch=being_initialized;
|
||||
BOOST_TRY
|
||||
{
|
||||
pthread::pthread_mutex_scoped_unlock relocker(&thread_detail::once_epoch_mutex);
|
||||
BOOST_THREAD_INVOKE_RET_VOID(f,p1, p2) BOOST_THREAD_INVOKE_RET_VOID_CALL;
|
||||
}
|
||||
BOOST_CATCH (...)
|
||||
{
|
||||
flag.epoch=uninitialized_flag;
|
||||
BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
|
||||
BOOST_RETHROW
|
||||
}
|
||||
BOOST_CATCH_END
|
||||
flag.epoch=--thread_detail::once_global_epoch;
|
||||
BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
|
||||
}
|
||||
else
|
||||
{
|
||||
while(flag.epoch==being_initialized)
|
||||
{
|
||||
BOOST_VERIFY(!posix::pthread_cond_wait(&thread_detail::once_epoch_cv,&thread_detail::once_epoch_mutex));
|
||||
}
|
||||
}
|
||||
}
|
||||
this_thread_epoch=thread_detail::once_global_epoch;
|
||||
}
|
||||
}
|
||||
|
||||
template<typename Function, typename T1, typename T2, typename T3>
|
||||
inline void call_once(once_flag& flag, Function f, T1 p1, T2 p2, T3 p3)
|
||||
{
|
||||
static thread_detail::uintmax_atomic_t const uninitialized_flag=BOOST_ONCE_INITIAL_FLAG_VALUE;
|
||||
static thread_detail::uintmax_atomic_t const being_initialized=uninitialized_flag+1;
|
||||
thread_detail::uintmax_atomic_t const epoch=flag.epoch;
|
||||
thread_detail::uintmax_atomic_t& this_thread_epoch=thread_detail::get_once_per_thread_epoch();
|
||||
|
||||
if(epoch<this_thread_epoch)
|
||||
{
|
||||
pthread::pthread_mutex_scoped_lock lk(&thread_detail::once_epoch_mutex);
|
||||
|
||||
while(flag.epoch<=being_initialized)
|
||||
{
|
||||
if(flag.epoch==uninitialized_flag)
|
||||
{
|
||||
flag.epoch=being_initialized;
|
||||
BOOST_TRY
|
||||
{
|
||||
pthread::pthread_mutex_scoped_unlock relocker(&thread_detail::once_epoch_mutex);
|
||||
BOOST_THREAD_INVOKE_RET_VOID(f,p1, p2, p3) BOOST_THREAD_INVOKE_RET_VOID_CALL;
|
||||
}
|
||||
BOOST_CATCH (...)
|
||||
{
|
||||
flag.epoch=uninitialized_flag;
|
||||
BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
|
||||
BOOST_RETHROW
|
||||
}
|
||||
BOOST_CATCH_END
|
||||
flag.epoch=--thread_detail::once_global_epoch;
|
||||
BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
|
||||
}
|
||||
else
|
||||
{
|
||||
while(flag.epoch==being_initialized)
|
||||
{
|
||||
BOOST_VERIFY(!posix::pthread_cond_wait(&thread_detail::once_epoch_cv,&thread_detail::once_epoch_mutex));
|
||||
}
|
||||
}
|
||||
}
|
||||
this_thread_epoch=thread_detail::once_global_epoch;
|
||||
}
|
||||
}
|
||||
|
||||
template<typename Function>
|
||||
inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f)
|
||||
{
|
||||
static thread_detail::uintmax_atomic_t const uninitialized_flag=BOOST_ONCE_INITIAL_FLAG_VALUE;
|
||||
static thread_detail::uintmax_atomic_t const being_initialized=uninitialized_flag+1;
|
||||
thread_detail::uintmax_atomic_t const epoch=flag.epoch;
|
||||
thread_detail::uintmax_atomic_t& this_thread_epoch=thread_detail::get_once_per_thread_epoch();
|
||||
|
||||
if(epoch<this_thread_epoch)
|
||||
{
|
||||
pthread::pthread_mutex_scoped_lock lk(&thread_detail::once_epoch_mutex);
|
||||
|
||||
while(flag.epoch<=being_initialized)
|
||||
{
|
||||
if(flag.epoch==uninitialized_flag)
|
||||
{
|
||||
flag.epoch=being_initialized;
|
||||
BOOST_TRY
|
||||
{
|
||||
pthread::pthread_mutex_scoped_unlock relocker(&thread_detail::once_epoch_mutex);
|
||||
f();
|
||||
}
|
||||
BOOST_CATCH (...)
|
||||
{
|
||||
flag.epoch=uninitialized_flag;
|
||||
BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
|
||||
BOOST_RETHROW
|
||||
}
|
||||
BOOST_CATCH_END
|
||||
flag.epoch=--thread_detail::once_global_epoch;
|
||||
BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
|
||||
}
|
||||
else
|
||||
{
|
||||
while(flag.epoch==being_initialized)
|
||||
{
|
||||
BOOST_VERIFY(!posix::pthread_cond_wait(&thread_detail::once_epoch_cv,&thread_detail::once_epoch_mutex));
|
||||
}
|
||||
}
|
||||
}
|
||||
this_thread_epoch=thread_detail::once_global_epoch;
|
||||
}
|
||||
}
|
||||
|
||||
template<typename Function, typename T1>
|
||||
inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(T1) p1)
|
||||
{
|
||||
static thread_detail::uintmax_atomic_t const uninitialized_flag=BOOST_ONCE_INITIAL_FLAG_VALUE;
|
||||
static thread_detail::uintmax_atomic_t const being_initialized=uninitialized_flag+1;
|
||||
thread_detail::uintmax_atomic_t const epoch=flag.epoch;
|
||||
thread_detail::uintmax_atomic_t& this_thread_epoch=thread_detail::get_once_per_thread_epoch();
|
||||
|
||||
if(epoch<this_thread_epoch)
|
||||
{
|
||||
pthread::pthread_mutex_scoped_lock lk(&thread_detail::once_epoch_mutex);
|
||||
|
||||
while(flag.epoch<=being_initialized)
|
||||
{
|
||||
if(flag.epoch==uninitialized_flag)
|
||||
{
|
||||
flag.epoch=being_initialized;
|
||||
BOOST_TRY
|
||||
{
|
||||
pthread::pthread_mutex_scoped_unlock relocker(&thread_detail::once_epoch_mutex);
|
||||
BOOST_THREAD_INVOKE_RET_VOID(
|
||||
thread_detail::decay_copy(boost::forward<Function>(f)),
|
||||
thread_detail::decay_copy(boost::forward<T1>(p1))
|
||||
) BOOST_THREAD_INVOKE_RET_VOID_CALL;
|
||||
}
|
||||
BOOST_CATCH (...)
|
||||
{
|
||||
flag.epoch=uninitialized_flag;
|
||||
BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
|
||||
BOOST_RETHROW
|
||||
}
|
||||
BOOST_CATCH_END
|
||||
flag.epoch=--thread_detail::once_global_epoch;
|
||||
BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
|
||||
}
|
||||
else
|
||||
{
|
||||
while(flag.epoch==being_initialized)
|
||||
{
|
||||
BOOST_VERIFY(!posix::pthread_cond_wait(&thread_detail::once_epoch_cv,&thread_detail::once_epoch_mutex));
|
||||
}
|
||||
}
|
||||
}
|
||||
this_thread_epoch=thread_detail::once_global_epoch;
|
||||
}
|
||||
}
|
||||
template<typename Function, typename T1, typename T2>
|
||||
inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(T1) p1, BOOST_THREAD_RV_REF(T2) p2)
|
||||
{
|
||||
static thread_detail::uintmax_atomic_t const uninitialized_flag=BOOST_ONCE_INITIAL_FLAG_VALUE;
|
||||
static thread_detail::uintmax_atomic_t const being_initialized=uninitialized_flag+1;
|
||||
thread_detail::uintmax_atomic_t const epoch=flag.epoch;
|
||||
thread_detail::uintmax_atomic_t& this_thread_epoch=thread_detail::get_once_per_thread_epoch();
|
||||
|
||||
if(epoch<this_thread_epoch)
|
||||
{
|
||||
pthread::pthread_mutex_scoped_lock lk(&thread_detail::once_epoch_mutex);
|
||||
|
||||
while(flag.epoch<=being_initialized)
|
||||
{
|
||||
if(flag.epoch==uninitialized_flag)
|
||||
{
|
||||
flag.epoch=being_initialized;
|
||||
BOOST_TRY
|
||||
{
|
||||
pthread::pthread_mutex_scoped_unlock relocker(&thread_detail::once_epoch_mutex);
|
||||
BOOST_THREAD_INVOKE_RET_VOID(
|
||||
thread_detail::decay_copy(boost::forward<Function>(f)),
|
||||
thread_detail::decay_copy(boost::forward<T1>(p1)),
|
||||
thread_detail::decay_copy(boost::forward<T1>(p2))
|
||||
) BOOST_THREAD_INVOKE_RET_VOID_CALL;
|
||||
}
|
||||
BOOST_CATCH (...)
|
||||
{
|
||||
flag.epoch=uninitialized_flag;
|
||||
BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
|
||||
BOOST_RETHROW
|
||||
}
|
||||
BOOST_CATCH_END
|
||||
flag.epoch=--thread_detail::once_global_epoch;
|
||||
BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
|
||||
}
|
||||
else
|
||||
{
|
||||
while(flag.epoch==being_initialized)
|
||||
{
|
||||
BOOST_VERIFY(!posix::pthread_cond_wait(&thread_detail::once_epoch_cv,&thread_detail::once_epoch_mutex));
|
||||
}
|
||||
}
|
||||
}
|
||||
this_thread_epoch=thread_detail::once_global_epoch;
|
||||
}
|
||||
}
|
||||
|
||||
template<typename Function, typename T1, typename T2, typename T3>
|
||||
inline void call_once(once_flag& flag, BOOST_THREAD_RV_REF(Function) f, BOOST_THREAD_RV_REF(T1) p1, BOOST_THREAD_RV_REF(T2) p2, BOOST_THREAD_RV_REF(T3) p3)
|
||||
{
|
||||
static thread_detail::uintmax_atomic_t const uninitialized_flag=BOOST_ONCE_INITIAL_FLAG_VALUE;
|
||||
static thread_detail::uintmax_atomic_t const being_initialized=uninitialized_flag+1;
|
||||
thread_detail::uintmax_atomic_t const epoch=flag.epoch;
|
||||
thread_detail::uintmax_atomic_t& this_thread_epoch=thread_detail::get_once_per_thread_epoch();
|
||||
|
||||
if(epoch<this_thread_epoch)
|
||||
{
|
||||
pthread::pthread_mutex_scoped_lock lk(&thread_detail::once_epoch_mutex);
|
||||
|
||||
while(flag.epoch<=being_initialized)
|
||||
{
|
||||
if(flag.epoch==uninitialized_flag)
|
||||
{
|
||||
flag.epoch=being_initialized;
|
||||
BOOST_TRY
|
||||
{
|
||||
pthread::pthread_mutex_scoped_unlock relocker(&thread_detail::once_epoch_mutex);
|
||||
BOOST_THREAD_INVOKE_RET_VOID(
|
||||
thread_detail::decay_copy(boost::forward<Function>(f)),
|
||||
thread_detail::decay_copy(boost::forward<T1>(p1)),
|
||||
thread_detail::decay_copy(boost::forward<T1>(p2)),
|
||||
thread_detail::decay_copy(boost::forward<T1>(p3))
|
||||
) BOOST_THREAD_INVOKE_RET_VOID_CALL;
|
||||
}
|
||||
BOOST_CATCH (...)
|
||||
{
|
||||
flag.epoch=uninitialized_flag;
|
||||
BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
|
||||
BOOST_RETHROW
|
||||
}
|
||||
BOOST_CATCH_END
|
||||
flag.epoch=--thread_detail::once_global_epoch;
|
||||
BOOST_VERIFY(!posix::pthread_cond_broadcast(&thread_detail::once_epoch_cv));
|
||||
}
|
||||
else
|
||||
{
|
||||
while(flag.epoch==being_initialized)
|
||||
{
|
||||
BOOST_VERIFY(!posix::pthread_cond_wait(&thread_detail::once_epoch_cv,&thread_detail::once_epoch_mutex));
|
||||
}
|
||||
}
|
||||
}
|
||||
this_thread_epoch=thread_detail::once_global_epoch;
|
||||
}
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
}
|
||||
|
||||
#include <boost/config/abi_suffix.hpp>
|
||||
|
||||
#endif
|
||||
Loading…
Add table
Add a link
Reference in a new issue