boost/coroutine/v2/detail/pull_coroutine_object.hpp
// Copyright Oliver Kowalke 2009. // 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_COROUTINES_UNIDIRECT_DETAIL_PULL_COROUTINE_OBJECT_H #define BOOST_COROUTINES_UNIDIRECT_DETAIL_PULL_COROUTINE_OBJECT_H #include <cstddef> #include <boost/assert.hpp> #include <boost/config.hpp> #include <boost/cstdint.hpp> #include <boost/exception_ptr.hpp> #include <boost/move/move.hpp> #include <boost/ref.hpp> #include <boost/tuple/tuple.hpp> #include <boost/type_traits/function_traits.hpp> #include <boost/utility.hpp> #include <boost/coroutine/attributes.hpp> #include <boost/coroutine/detail/config.hpp> #include <boost/coroutine/exceptions.hpp> #include <boost/coroutine/detail/flags.hpp> #include <boost/coroutine/detail/holder.hpp> #include <boost/coroutine/detail/param.hpp> #include <boost/coroutine/detail/stack_tuple.hpp> #include <boost/coroutine/detail/trampoline.hpp> #include <boost/coroutine/flags.hpp> #include <boost/coroutine/stack_context.hpp> #include <boost/coroutine/v2/detail/pull_coroutine_base.hpp> #ifdef BOOST_MSVC #pragma warning (push) #pragma warning (disable: 4355) // using 'this' in initializer list #endif #ifdef BOOST_HAS_ABI_HEADERS # include BOOST_ABI_PREFIX #endif namespace boost { namespace coroutines { namespace detail { template< typename R, typename Fn, typename StackAllocator, typename Allocator, typename Caller > class pull_coroutine_object : private stack_tuple< StackAllocator >, public pull_coroutine_base< R > { public: typedef typename Allocator::template rebind< pull_coroutine_object< R, Fn, StackAllocator, Allocator, Caller > >::other allocator_t; private: typedef stack_tuple< StackAllocator > pbase_type; typedef pull_coroutine_base< R > base_type; Fn fn_; allocator_t alloc_; static void destroy_( allocator_t & alloc, pull_coroutine_object * p) { alloc.destroy( p); alloc.deallocate( p, 1); } pull_coroutine_object( pull_coroutine_object &); pull_coroutine_object & operator=( pull_coroutine_object const&); void enter_() { holder< R > * hldr_from( reinterpret_cast< holder< R > * >( this->caller_.jump( this->callee_, reinterpret_cast< intptr_t >( this), this->preserve_fpu() ) ) ); this->callee_ = * hldr_from->ctx; this->result_ = hldr_from->data; if ( this->except_) rethrow_exception( this->except_); } void unwind_stack_() BOOST_NOEXCEPT { BOOST_ASSERT( ! this->is_complete() ); this->flags_ |= flag_unwind_stack; holder< R > hldr_to( & this->caller_, true); this->caller_.jump( this->callee_, reinterpret_cast< intptr_t >( & hldr_to), this->preserve_fpu() ); this->flags_ &= ~flag_unwind_stack; BOOST_ASSERT( this->is_complete() ); } public: #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES pull_coroutine_object( Fn && fn, attributes const& attr, StackAllocator const& stack_alloc, allocator_t const& alloc) : pbase_type( stack_alloc, attr.size), base_type( trampoline1< pull_coroutine_object >, & this->stack_ctx, stack_unwind == attr.do_unwind, fpu_preserved == attr.preserve_fpu), fn_( forward< Fn >( fn) ), alloc_( alloc) { enter_(); } #else pull_coroutine_object( Fn fn, attributes const& attr, StackAllocator const& stack_alloc, allocator_t const& alloc) : pbase_type( stack_alloc, attr.size), base_type( trampoline1< pull_coroutine_object >, & this->stack_ctx, stack_unwind == attr.do_unwind, fpu_preserved == attr.preserve_fpu), fn_( fn), alloc_( alloc) { enter_(); } pull_coroutine_object( BOOST_RV_REF( Fn) fn, attributes const& attr, StackAllocator const& stack_alloc, allocator_t const& alloc) : pbase_type( stack_alloc, attr.size), base_type( trampoline1< pull_coroutine_object >, & this->stack_ctx, stack_unwind == attr.do_unwind, fpu_preserved == attr.preserve_fpu), fn_( fn), alloc_( alloc) { enter_(); } #endif ~pull_coroutine_object() { if ( ! this->is_complete() && this->force_unwind() ) unwind_stack_(); } void run() { coroutine_context callee; coroutine_context caller; { // create push_coroutine Caller c( this->caller_, false, this->preserve_fpu(), alloc_); try { fn_( c); } catch ( forced_unwind const&) {} catch (...) { this->except_ = current_exception(); } callee = c.impl_->callee_; } this->flags_ |= flag_complete; holder< R > hldr_to( & caller); caller.jump( callee, reinterpret_cast< intptr_t >( & hldr_to), this->preserve_fpu() ); BOOST_ASSERT_MSG( false, "pull_coroutine is complete"); } void deallocate_object() { destroy_( alloc_, this); } }; template< typename R, typename Fn, typename StackAllocator, typename Allocator, typename Caller > class pull_coroutine_object< R, reference_wrapper< Fn >, StackAllocator, Allocator, Caller > : private stack_tuple< StackAllocator >, public pull_coroutine_base< R > { public: typedef typename Allocator::template rebind< pull_coroutine_object< R, Fn, StackAllocator, Allocator, Caller > >::other allocator_t; private: typedef stack_tuple< StackAllocator > pbase_type; typedef pull_coroutine_base< R > base_type; Fn fn_; allocator_t alloc_; static void destroy_( allocator_t & alloc, pull_coroutine_object * p) { alloc.destroy( p); alloc.deallocate( p, 1); } pull_coroutine_object( pull_coroutine_object &); pull_coroutine_object & operator=( pull_coroutine_object const&); void enter_() { holder< R > * hldr_from( reinterpret_cast< holder< R > * >( this->caller_.jump( this->callee_, reinterpret_cast< intptr_t >( this), this->preserve_fpu() ) ) ); this->callee_ = * hldr_from->ctx; if ( this->except_) rethrow_exception( this->except_); } void unwind_stack_() BOOST_NOEXCEPT { BOOST_ASSERT( ! this->is_complete() ); this->flags_ |= flag_unwind_stack; holder< R > hldr_to( & this->caller_, true); this->caller_.jump( this->callee_, reinterpret_cast< intptr_t >( & hldr_to), this->preserve_fpu() ); this->flags_ &= ~flag_unwind_stack; BOOST_ASSERT( this->is_complete() ); } public: pull_coroutine_object( reference_wrapper< Fn > fn, attributes const& attr, StackAllocator const& stack_alloc, allocator_t const& alloc) : pbase_type( stack_alloc, attr.size), base_type( trampoline1< pull_coroutine_object >, & this->stack_ctx, stack_unwind == attr.do_unwind, fpu_preserved == attr.preserve_fpu), fn_( fn), alloc_( alloc) { enter_(); } ~pull_coroutine_object() { if ( ! this->is_complete() && this->force_unwind() ) unwind_stack_(); } void run() { coroutine_context callee; coroutine_context caller; { // create pull_coroutine Caller c( this->caller_, false, this->preserve_fpu(), alloc_); try { fn_( c); } catch ( forced_unwind const&) {} catch (...) { this->except_ = current_exception(); } callee = c.impl_->callee_; } this->flags_ |= flag_complete; holder< R > hldr_to( & caller); caller.jump( callee, reinterpret_cast< intptr_t >( & hldr_to), this->preserve_fpu() ); BOOST_ASSERT_MSG( false, "pull_coroutine is complete"); } void deallocate_object() { destroy_( alloc_, this); } }; template< typename R, typename Fn, typename StackAllocator, typename Allocator, typename Caller > class pull_coroutine_object< R, const reference_wrapper< Fn >, StackAllocator, Allocator, Caller > : private stack_tuple< StackAllocator >, public pull_coroutine_base< R > { public: typedef typename Allocator::template rebind< pull_coroutine_object< R, Fn, StackAllocator, Allocator, Caller > >::other allocator_t; private: typedef stack_tuple< StackAllocator > pbase_type; typedef pull_coroutine_base< R > base_type; Fn fn_; allocator_t alloc_; static void destroy_( allocator_t & alloc, pull_coroutine_object * p) { alloc.destroy( p); alloc.deallocate( p, 1); } pull_coroutine_object( pull_coroutine_object &); pull_coroutine_object & operator=( pull_coroutine_object const&); void enter_() { holder< R > * hldr_from( reinterpret_cast< holder< R > * >( this->caller_.jump( this->callee_, reinterpret_cast< intptr_t >( this), this->preserve_fpu() ) ) ); this->callee_ = * hldr_from->ctx; if ( this->except_) rethrow_exception( this->except_); } void unwind_stack_() BOOST_NOEXCEPT { BOOST_ASSERT( ! this->is_complete() ); this->flags_ |= flag_unwind_stack; holder< R > hldr_to( & this->caller_, true); this->caller_.jump( this->callee_, reinterpret_cast< intptr_t >( & hldr_to), this->preserve_fpu() ); this->flags_ &= ~flag_unwind_stack; BOOST_ASSERT( this->is_complete() ); } public: pull_coroutine_object( const reference_wrapper< Fn > fn, attributes const& attr, StackAllocator const& stack_alloc, allocator_t const& alloc) : pbase_type( stack_alloc, attr.size), base_type( trampoline1< pull_coroutine_object >, & this->stack_ctx, stack_unwind == attr.do_unwind, fpu_preserved == attr.preserve_fpu), fn_( fn), alloc_( alloc) { enter_(); } ~pull_coroutine_object() { if ( ! this->is_complete() && this->force_unwind() ) unwind_stack_(); } void run() { coroutine_context callee; coroutine_context caller; { // create pull_coroutine Caller c( this->caller_, false, this->preserve_fpu(), alloc_); try { fn_( c); } catch ( forced_unwind const&) {} catch (...) { this->except_ = current_exception(); } callee = c.impl_->callee_; } this->flags_ |= flag_complete; holder< R > hldr_to( & caller); caller.jump( callee, reinterpret_cast< intptr_t >( & hldr_to), this->preserve_fpu() ); BOOST_ASSERT_MSG( false, "pull_coroutine is complete"); } void deallocate_object() { destroy_( alloc_, this); } }; template< typename R, typename Fn, typename StackAllocator, typename Allocator, typename Caller > class pull_coroutine_object< R &, Fn, StackAllocator, Allocator, Caller > : private stack_tuple< StackAllocator >, public pull_coroutine_base< R & > { public: typedef typename Allocator::template rebind< pull_coroutine_object< R &, Fn, StackAllocator, Allocator, Caller > >::other allocator_t; private: typedef stack_tuple< StackAllocator > pbase_type; typedef pull_coroutine_base< R & > base_type; Fn fn_; allocator_t alloc_; static void destroy_( allocator_t & alloc, pull_coroutine_object * p) { alloc.destroy( p); alloc.deallocate( p, 1); } pull_coroutine_object( pull_coroutine_object &); pull_coroutine_object & operator=( pull_coroutine_object const&); void enter_() { holder< R * > * hldr_from( reinterpret_cast< holder< R * > * >( this->caller_.jump( this->callee_, reinterpret_cast< intptr_t >( this), this->preserve_fpu() ) ) ); this->callee_ = * hldr_from->ctx; this->result_ = hldr_from->data; if ( this->except_) rethrow_exception( this->except_); } void unwind_stack_() BOOST_NOEXCEPT { BOOST_ASSERT( ! this->is_complete() ); this->flags_ |= flag_unwind_stack; holder< R * > hldr_to( & this->caller_, true); this->caller_.jump( this->callee_, reinterpret_cast< intptr_t >( & hldr_to), this->preserve_fpu() ); this->flags_ &= ~flag_unwind_stack; BOOST_ASSERT( this->is_complete() ); } public: #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES pull_coroutine_object( Fn && fn, attributes const& attr, StackAllocator const& stack_alloc, allocator_t const& alloc) : pbase_type( stack_alloc, attr.size), base_type( trampoline1< pull_coroutine_object >, & this->stack_ctx, stack_unwind == attr.do_unwind, fpu_preserved == attr.preserve_fpu), fn_( forward< Fn >( fn) ), alloc_( alloc) { enter_(); } #else pull_coroutine_object( Fn fn, attributes const& attr, StackAllocator const& stack_alloc, allocator_t const& alloc) : pbase_type( stack_alloc, attr.size), base_type( trampoline1< pull_coroutine_object >, & this->stack_ctx, stack_unwind == attr.do_unwind, fpu_preserved == attr.preserve_fpu), fn_( fn), alloc_( alloc) { enter_(); } pull_coroutine_object( BOOST_RV_REF( Fn) fn, attributes const& attr, StackAllocator const& stack_alloc, allocator_t const& alloc) : pbase_type( stack_alloc, attr.size), base_type( trampoline1< pull_coroutine_object >, & this->stack_ctx, stack_unwind == attr.do_unwind, fpu_preserved == attr.preserve_fpu), fn_( fn), alloc_( alloc) { enter_(); } #endif ~pull_coroutine_object() { if ( ! this->is_complete() && this->force_unwind() ) unwind_stack_(); } void run() { coroutine_context callee; coroutine_context caller; { // create push_coroutine Caller c( this->caller_, false, this->preserve_fpu(), alloc_); try { fn_( c); } catch ( forced_unwind const&) {} catch (...) { this->except_ = current_exception(); } callee = c.impl_->callee_; } this->flags_ |= flag_complete; holder< R * > hldr_to( & caller); caller.jump( callee, reinterpret_cast< intptr_t >( & hldr_to), this->preserve_fpu() ); BOOST_ASSERT_MSG( false, "pull_coroutine is complete"); } void deallocate_object() { destroy_( alloc_, this); } }; template< typename R, typename Fn, typename StackAllocator, typename Allocator, typename Caller > class pull_coroutine_object< R &, reference_wrapper< Fn >, StackAllocator, Allocator, Caller > : private stack_tuple< StackAllocator >, public pull_coroutine_base< R & > { public: typedef typename Allocator::template rebind< pull_coroutine_object< R &, Fn, StackAllocator, Allocator, Caller > >::other allocator_t; private: typedef stack_tuple< StackAllocator > pbase_type; typedef pull_coroutine_base< R & > base_type; Fn fn_; allocator_t alloc_; static void destroy_( allocator_t & alloc, pull_coroutine_object * p) { alloc.destroy( p); alloc.deallocate( p, 1); } pull_coroutine_object( pull_coroutine_object &); pull_coroutine_object & operator=( pull_coroutine_object const&); void enter_() { holder< R * > * hldr_from( reinterpret_cast< holder< R * > * >( this->caller_.jump( this->callee_, reinterpret_cast< intptr_t >( this), this->preserve_fpu() ) ) ); this->callee_ = * hldr_from->ctx; if ( this->except_) rethrow_exception( this->except_); } void unwind_stack_() BOOST_NOEXCEPT { BOOST_ASSERT( ! this->is_complete() ); this->flags_ |= flag_unwind_stack; holder< R * > hldr_to( & this->caller_, true); this->caller_.jump( this->callee_, reinterpret_cast< intptr_t >( & hldr_to), this->preserve_fpu() ); this->flags_ &= ~flag_unwind_stack; BOOST_ASSERT( this->is_complete() ); } public: pull_coroutine_object( reference_wrapper< Fn > fn, attributes const& attr, StackAllocator const& stack_alloc, allocator_t const& alloc) : pbase_type( stack_alloc, attr.size), base_type( trampoline1< pull_coroutine_object >, & this->stack_ctx, stack_unwind == attr.do_unwind, fpu_preserved == attr.preserve_fpu), fn_( fn), alloc_( alloc) { enter_(); } ~pull_coroutine_object() { if ( ! this->is_complete() && this->force_unwind() ) unwind_stack_(); } void run() { coroutine_context callee; coroutine_context caller; { // create pull_coroutine Caller c( this->caller_, false, this->preserve_fpu(), alloc_); try { fn_( c); } catch ( forced_unwind const&) {} catch (...) { this->except_ = current_exception(); } callee = c.impl_->callee_; } this->flags_ |= flag_complete; holder< R * > hldr_to( & caller); caller.jump( callee, reinterpret_cast< intptr_t >( & hldr_to), this->preserve_fpu() ); BOOST_ASSERT_MSG( false, "pull_coroutine is complete"); } void deallocate_object() { destroy_( alloc_, this); } }; template< typename R, typename Fn, typename StackAllocator, typename Allocator, typename Caller > class pull_coroutine_object< R &, const reference_wrapper< Fn >, StackAllocator, Allocator, Caller > : private stack_tuple< StackAllocator >, public pull_coroutine_base< R & > { public: typedef typename Allocator::template rebind< pull_coroutine_object< R &, Fn, StackAllocator, Allocator, Caller > >::other allocator_t; private: typedef stack_tuple< StackAllocator > pbase_type; typedef pull_coroutine_base< R & > base_type; Fn fn_; allocator_t alloc_; static void destroy_( allocator_t & alloc, pull_coroutine_object * p) { alloc.destroy( p); alloc.deallocate( p, 1); } pull_coroutine_object( pull_coroutine_object &); pull_coroutine_object & operator=( pull_coroutine_object const&); void enter_() { holder< R * > * hldr_from( reinterpret_cast< holder< R * > * >( this->caller_.jump( this->callee_, reinterpret_cast< intptr_t >( this), this->preserve_fpu() ) ) ); this->callee_ = * hldr_from->ctx; if ( this->except_) rethrow_exception( this->except_); } void unwind_stack_() BOOST_NOEXCEPT { BOOST_ASSERT( ! this->is_complete() ); this->flags_ |= flag_unwind_stack; holder< R * > hldr_to( & this->caller_, true); this->caller_.jump( this->callee_, reinterpret_cast< intptr_t >( & hldr_to), this->preserve_fpu() ); this->flags_ &= ~flag_unwind_stack; BOOST_ASSERT( this->is_complete() ); } public: pull_coroutine_object( const reference_wrapper< Fn > fn, attributes const& attr, StackAllocator const& stack_alloc, allocator_t const& alloc) : pbase_type( stack_alloc, attr.size), base_type( trampoline1< pull_coroutine_object >, & this->stack_ctx, stack_unwind == attr.do_unwind, fpu_preserved == attr.preserve_fpu), fn_( fn), alloc_( alloc) { enter_(); } ~pull_coroutine_object() { if ( ! this->is_complete() && this->force_unwind() ) unwind_stack_(); } void run() { coroutine_context callee; coroutine_context caller; { // create pull_coroutine Caller c( this->caller_, false, this->preserve_fpu(), alloc_); try { fn_( c); } catch ( forced_unwind const&) {} catch (...) { this->except_ = current_exception(); } callee = c.impl_->callee_; } this->flags_ |= flag_complete; holder< R * > hldr_to( & caller); caller.jump( callee, reinterpret_cast< intptr_t >( & hldr_to), this->preserve_fpu() ); BOOST_ASSERT_MSG( false, "pull_coroutine is complete"); } void deallocate_object() { destroy_( alloc_, this); } }; template< typename Fn, typename StackAllocator, typename Allocator, typename Caller > class pull_coroutine_object< void, Fn, StackAllocator, Allocator, Caller > : private stack_tuple< StackAllocator >, public pull_coroutine_base< void > { public: typedef typename Allocator::template rebind< pull_coroutine_object< void, Fn, StackAllocator, Allocator, Caller > >::other allocator_t; private: typedef stack_tuple< StackAllocator > pbase_type; typedef pull_coroutine_base< void > base_type; Fn fn_; allocator_t alloc_; static void destroy_( allocator_t & alloc, pull_coroutine_object * p) { alloc.destroy( p); alloc.deallocate( p, 1); } pull_coroutine_object( pull_coroutine_object &); pull_coroutine_object & operator=( pull_coroutine_object const&); void enter_() { holder< void > * hldr_from( reinterpret_cast< holder< void > * >( this->caller_.jump( this->callee_, reinterpret_cast< intptr_t >( this), this->preserve_fpu() ) ) ); this->callee_ = * hldr_from->ctx; if ( this->except_) rethrow_exception( this->except_); } void unwind_stack_() BOOST_NOEXCEPT { BOOST_ASSERT( ! this->is_complete() ); this->flags_ |= flag_unwind_stack; holder< void > hldr_to( & this->caller_, true); this->caller_.jump( this->callee_, reinterpret_cast< intptr_t >( & hldr_to), this->preserve_fpu() ); this->flags_ &= ~flag_unwind_stack; BOOST_ASSERT( this->is_complete() ); } public: #ifndef BOOST_NO_CXX11_RVALUE_REFERENCES pull_coroutine_object( Fn && fn, attributes const& attr, StackAllocator const& stack_alloc, allocator_t const& alloc) : pbase_type( stack_alloc, attr.size), base_type( trampoline1< pull_coroutine_object >, & this->stack_ctx, stack_unwind == attr.do_unwind, fpu_preserved == attr.preserve_fpu), fn_( forward< Fn >( fn) ), alloc_( alloc) { enter_(); } #else pull_coroutine_object( Fn fn, attributes const& attr, StackAllocator const& stack_alloc, allocator_t const& alloc) : pbase_type( stack_alloc, attr.size), base_type( trampoline1< pull_coroutine_object >, & this->stack_ctx, stack_unwind == attr.do_unwind, fpu_preserved == attr.preserve_fpu), fn_( fn), alloc_( alloc) { enter_(); } pull_coroutine_object( BOOST_RV_REF( Fn) fn, attributes const& attr, StackAllocator const& stack_alloc, allocator_t const& alloc) : pbase_type( stack_alloc, attr.size), base_type( trampoline1< pull_coroutine_object >, & this->stack_ctx, stack_unwind == attr.do_unwind, fpu_preserved == attr.preserve_fpu), fn_( fn), alloc_( alloc) { enter_(); } #endif ~pull_coroutine_object() { if ( ! this->is_complete() && this->force_unwind() ) unwind_stack_(); } void run() { coroutine_context callee; coroutine_context caller; { // create push_coroutine Caller c( this->caller_, false, this->preserve_fpu(), alloc_); try { fn_( c); } catch ( forced_unwind const&) {} catch (...) { this->except_ = current_exception(); } callee = c.impl_->callee_; } this->flags_ |= flag_complete; holder< void > hldr_to( & caller); caller.jump( callee, reinterpret_cast< intptr_t >( & hldr_to), this->preserve_fpu() ); BOOST_ASSERT_MSG( false, "pull_coroutine is complete"); } void deallocate_object() { destroy_( alloc_, this); } }; template< typename Fn, typename StackAllocator, typename Allocator, typename Caller > class pull_coroutine_object< void, reference_wrapper< Fn >, StackAllocator, Allocator, Caller > : private stack_tuple< StackAllocator >, public pull_coroutine_base< void > { public: typedef typename Allocator::template rebind< pull_coroutine_object< void, Fn, StackAllocator, Allocator, Caller > >::other allocator_t; private: typedef stack_tuple< StackAllocator > pbase_type; typedef pull_coroutine_base< void > base_type; Fn fn_; allocator_t alloc_; static void destroy_( allocator_t & alloc, pull_coroutine_object * p) { alloc.destroy( p); alloc.deallocate( p, 1); } pull_coroutine_object( pull_coroutine_object &); pull_coroutine_object & operator=( pull_coroutine_object const&); void enter_() { holder< void > * hldr_from( reinterpret_cast< holder< void > * >( this->caller_.jump( this->callee_, reinterpret_cast< intptr_t >( this), this->preserve_fpu() ) ) ); this->callee_ = * hldr_from->ctx; if ( this->except_) rethrow_exception( this->except_); } void unwind_stack_() BOOST_NOEXCEPT { BOOST_ASSERT( ! this->is_complete() ); this->flags_ |= flag_unwind_stack; holder< void > hldr_to( & this->caller_, true); this->caller_.jump( this->callee_, reinterpret_cast< intptr_t >( & hldr_to), this->preserve_fpu() ); this->flags_ &= ~flag_unwind_stack; BOOST_ASSERT( this->is_complete() ); } public: pull_coroutine_object( reference_wrapper< Fn > fn, attributes const& attr, StackAllocator const& stack_alloc, allocator_t const& alloc) : pbase_type( stack_alloc, attr.size), base_type( trampoline1< pull_coroutine_object >, & this->stack_ctx, stack_unwind == attr.do_unwind, fpu_preserved == attr.preserve_fpu), fn_( fn), alloc_( alloc) { enter_(); } ~pull_coroutine_object() { if ( ! this->is_complete() && this->force_unwind() ) unwind_stack_(); } void run() { coroutine_context callee; coroutine_context caller; { // create pull_coroutine Caller c( this->caller_, false, this->preserve_fpu(), alloc_); try { fn_( c); } catch ( forced_unwind const&) {} catch (...) { this->except_ = current_exception(); } callee = c.impl_->callee_; } this->flags_ |= flag_complete; holder< void > hldr_to( & caller); caller.jump( callee, reinterpret_cast< intptr_t >( & hldr_to), this->preserve_fpu() ); BOOST_ASSERT_MSG( false, "pull_coroutine is complete"); } void deallocate_object() { destroy_( alloc_, this); } }; template< typename Fn, typename StackAllocator, typename Allocator, typename Caller > class pull_coroutine_object< void, const reference_wrapper< Fn >, StackAllocator, Allocator, Caller > : private stack_tuple< StackAllocator >, public pull_coroutine_base< void > { public: typedef typename Allocator::template rebind< pull_coroutine_object< void, Fn, StackAllocator, Allocator, Caller > >::other allocator_t; private: typedef stack_tuple< StackAllocator > pbase_type; typedef pull_coroutine_base< void > base_type; Fn fn_; allocator_t alloc_; static void destroy_( allocator_t & alloc, pull_coroutine_object * p) { alloc.destroy( p); alloc.deallocate( p, 1); } pull_coroutine_object( pull_coroutine_object &); pull_coroutine_object & operator=( pull_coroutine_object const&); void enter_() { holder< void > * hldr_from( reinterpret_cast< holder< void > * >( this->caller_.jump( this->callee_, reinterpret_cast< intptr_t >( this), this->preserve_fpu() ) ) ); this->callee_ = * hldr_from->ctx; if ( this->except_) rethrow_exception( this->except_); } void unwind_stack_() BOOST_NOEXCEPT { BOOST_ASSERT( ! this->is_complete() ); this->flags_ |= flag_unwind_stack; holder< void > hldr_to( & this->caller_, true); this->caller_.jump( this->callee_, reinterpret_cast< intptr_t >( & hldr_to), this->preserve_fpu() ); this->flags_ &= ~flag_unwind_stack; BOOST_ASSERT( this->is_complete() ); } public: pull_coroutine_object( const reference_wrapper< Fn > fn, attributes const& attr, StackAllocator const& stack_alloc, allocator_t const& alloc) : pbase_type( stack_alloc, attr.size), base_type( trampoline1< pull_coroutine_object >, & this->stack_ctx, stack_unwind == attr.do_unwind, fpu_preserved == attr.preserve_fpu), fn_( fn), alloc_( alloc) { enter_(); } ~pull_coroutine_object() { if ( ! this->is_complete() && this->force_unwind() ) unwind_stack_(); } void run() { coroutine_context callee; coroutine_context caller; { // create pull_coroutine Caller c( this->caller_, false, this->preserve_fpu(), alloc_); try { fn_( c); } catch ( forced_unwind const&) {} catch (...) { this->except_ = current_exception(); } callee = c.impl_->callee_; } this->flags_ |= flag_complete; holder< void > hldr_to( & caller); caller.jump( callee, reinterpret_cast< intptr_t >( & hldr_to), this->preserve_fpu() ); BOOST_ASSERT_MSG( false, "pull_coroutine is complete"); } void deallocate_object() { destroy_( alloc_, this); } }; }}} #ifdef BOOST_HAS_ABI_HEADERS # include BOOST_ABI_SUFFIX #endif #ifdef BOOST_MSVC #pragma warning (pop) #endif #endif // BOOST_COROUTINES_UNIDIRECT_DETAIL_PULL_COROUTINE_OBJECT_H