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// Copyright Oliver Kowalke 2013.
// 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)
#ifndef BOOST_FIBERS_FIBER_H
#define BOOST_FIBERS_FIBER_H
#include <algorithm>
#include <exception>
#include <memory>
#include <utility>
#include <boost/assert.hpp>
#include <boost/config.hpp>
#include <boost/intrusive_ptr.hpp>
#include <boost/predef.h>
#include <boost/fiber/detail/config.hpp>
#include <boost/fiber/detail/disable_overload.hpp>
#include <boost/fiber/context.hpp>
#include <boost/fiber/fixedsize_stack.hpp>
#include <boost/fiber/policy.hpp>
#include <boost/fiber/properties.hpp>
#include <boost/fiber/segmented_stack.hpp>
#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_PREFIX
#endif
#ifdef _MSC_VER
# pragma warning(push)
# pragma warning(disable:4251)
#endif
namespace boost {
namespace fibers {
class BOOST_FIBERS_DECL fiber {
private:
friend class context;
typedef intrusive_ptr< context > ptr_t;
ptr_t impl_{};
void start_() noexcept;
public:
typedef context::id id;
fiber() = default;
template< typename Fn,
typename ... Arg,
typename = detail::disable_overload< fiber, Fn >,
typename = detail::disable_overload< launch, Fn >,
typename = detail::disable_overload< std::allocator_arg_t, Fn >
>
#if BOOST_COMP_GNUC < 50000000
fiber( Fn && fn, Arg && ... arg) :
#else
fiber( Fn && fn, Arg ... arg) :
#endif
fiber{ launch::post,
std::allocator_arg, default_stack(),
std::forward< Fn >( fn), std::forward< Arg >( arg) ... } {
}
template< typename Fn,
typename ... Arg,
typename = detail::disable_overload< fiber, Fn >
>
#if BOOST_COMP_GNUC < 50000000
fiber( launch policy, Fn && fn, Arg && ... arg) :
#else
fiber( launch policy, Fn && fn, Arg ... arg) :
#endif
fiber{ policy,
std::allocator_arg, default_stack(),
std::forward< Fn >( fn), std::forward< Arg >( arg) ... } {
}
template< typename StackAllocator,
typename Fn,
typename ... Arg
>
#if BOOST_COMP_GNUC < 50000000
fiber( std::allocator_arg_t, StackAllocator salloc, Fn && fn, Arg && ... arg) :
#else
fiber( std::allocator_arg_t, StackAllocator salloc, Fn && fn, Arg ... arg) :
#endif
fiber{ launch::post,
std::allocator_arg, salloc,
std::forward< Fn >( fn), std::forward< Arg >( arg) ... } {
}
template< typename StackAllocator,
typename Fn,
typename ... Arg
>
#if BOOST_COMP_GNUC < 50000000
fiber( launch policy, std::allocator_arg_t, StackAllocator salloc, Fn && fn, Arg && ... arg) :
#else
fiber( launch policy, std::allocator_arg_t, StackAllocator salloc, Fn && fn, Arg ... arg) :
#endif
impl_{ make_worker_context( policy, salloc, std::forward< Fn >( fn), std::forward< Arg >( arg) ... ) } {
start_();
}
~fiber() {
if ( joinable() ) {
std::terminate();
}
}
fiber( fiber const&) = delete;
fiber & operator=( fiber const&) = delete;
fiber( fiber && other) noexcept :
impl_{} {
impl_.swap( other.impl_);
}
fiber & operator=( fiber && other) noexcept {
if ( joinable() ) {
std::terminate();
}
if ( BOOST_UNLIKELY( this == & other) ) {
return * this;
}
impl_.swap( other.impl_);
return * this;
}
void swap( fiber & other) noexcept {
impl_.swap( other.impl_);
}
id get_id() const noexcept {
return impl_ ? impl_->get_id() : id();
}
bool joinable() const noexcept {
return nullptr != impl_;
}
void join();
void detach();
template< typename PROPS >
PROPS & properties() {
auto props = impl_->get_properties();
BOOST_ASSERT_MSG( props, "fiber::properties not set");
return dynamic_cast< PROPS & >( * props );
}
};
inline
bool operator<( fiber const& l, fiber const& r) noexcept {
return l.get_id() < r.get_id();
}
inline
void swap( fiber & l, fiber & r) noexcept {
return l.swap( r);
}
}}
#ifdef _MSC_VER
# pragma warning(pop)
#endif
#ifdef BOOST_HAS_ABI_HEADERS
# include BOOST_ABI_SUFFIX
#endif
#endif // BOOST_FIBERS_FIBER_H
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