324 lines
9.8 KiB
C++
Executable File
324 lines
9.8 KiB
C++
Executable File
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// Copyright Oliver Kowalke 2009.
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_COROUTINES_DETAIL_PULL_COROUTINE_OBJECT_H
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#define BOOST_COROUTINES_DETAIL_PULL_COROUTINE_OBJECT_H
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#include <boost/assert.hpp>
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#include <boost/config.hpp>
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#include <boost/context/detail/config.hpp>
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#include <boost/cstdint.hpp>
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#include <boost/exception_ptr.hpp>
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#include <boost/move/move.hpp>
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#include <boost/coroutine/detail/config.hpp>
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#include <boost/coroutine/detail/coroutine_context.hpp>
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#include <boost/coroutine/detail/flags.hpp>
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#include <boost/coroutine/detail/preallocated.hpp>
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#include <boost/coroutine/detail/pull_coroutine_impl.hpp>
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#include <boost/coroutine/detail/trampoline_pull.hpp>
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#include <boost/coroutine/exceptions.hpp>
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#include <boost/coroutine/flags.hpp>
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#include <boost/coroutine/stack_context.hpp>
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#ifdef BOOST_HAS_ABI_HEADERS
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# include BOOST_ABI_PREFIX
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#endif
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#if defined(BOOST_MSVC)
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# pragma warning(push)
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# pragma warning(disable:4355)
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#endif
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namespace boost {
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namespace coroutines {
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namespace detail {
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struct pull_coroutine_context
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{
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coroutine_context caller;
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coroutine_context callee;
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template< typename Coro >
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pull_coroutine_context( preallocated const& palloc, Coro *) :
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caller(),
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callee( trampoline_pull< Coro >, palloc)
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{}
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};
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template< typename PushCoro, typename R, typename Fn, typename StackAllocator >
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class pull_coroutine_object : private pull_coroutine_context,
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public pull_coroutine_impl< R >
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{
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private:
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typedef pull_coroutine_context ctx_t;
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typedef pull_coroutine_impl< R > base_t;
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typedef pull_coroutine_object< PushCoro, R, Fn, StackAllocator > obj_t;
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Fn fn_;
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stack_context stack_ctx_;
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StackAllocator stack_alloc_;
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static void deallocate_( obj_t * obj)
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{
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stack_context stack_ctx( obj->stack_ctx_);
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StackAllocator stack_alloc( obj->stack_alloc_);
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obj->unwind_stack();
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obj->~obj_t();
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stack_alloc.deallocate( stack_ctx);
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}
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public:
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#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
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pull_coroutine_object( Fn fn, attributes const& attrs,
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preallocated const& palloc,
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StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
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ctx_t( palloc, this),
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base_t( & this->caller,
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& this->callee,
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stack_unwind == attrs.do_unwind),
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fn_( fn),
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stack_ctx_( palloc.sctx),
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stack_alloc_( stack_alloc)
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{}
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#endif
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pull_coroutine_object( BOOST_RV_REF( Fn) fn, attributes const& attrs,
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preallocated const& palloc,
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StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
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ctx_t( palloc, this),
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base_t( & this->caller,
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& this->callee,
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stack_unwind == attrs.do_unwind),
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#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
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fn_( fn),
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#else
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fn_( boost::forward< Fn >( fn) ),
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#endif
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stack_ctx_( palloc.sctx),
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stack_alloc_( stack_alloc)
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{}
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void run()
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{
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BOOST_ASSERT( ! base_t::unwind_requested() );
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base_t::flags_ |= flag_started;
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base_t::flags_ |= flag_running;
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// create push_coroutine
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typename PushCoro::synth_type b( & this->callee, & this->caller, false);
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PushCoro push_coro( synthesized_t::syntesized, b);
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try
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{ fn_( push_coro); }
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catch ( forced_unwind const&)
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{}
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#if defined( BOOST_CONTEXT_HAS_CXXABI_H )
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catch ( abi::__forced_unwind const&)
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{ throw; }
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#endif
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catch (...)
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{ base_t::except_ = current_exception(); }
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base_t::flags_ |= flag_complete;
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base_t::flags_ &= ~flag_running;
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typename base_t::param_type to;
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this->callee.jump(
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this->caller,
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& to);
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BOOST_ASSERT_MSG( false, "pull_coroutine is complete");
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}
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void destroy()
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{ deallocate_( this); }
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};
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template< typename PushCoro, typename R, typename Fn, typename StackAllocator >
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class pull_coroutine_object< PushCoro, R &, Fn, StackAllocator > : private pull_coroutine_context,
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public pull_coroutine_impl< R & >
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{
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private:
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typedef pull_coroutine_context ctx_t;
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typedef pull_coroutine_impl< R & > base_t;
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typedef pull_coroutine_object< PushCoro, R &, Fn, StackAllocator > obj_t;
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Fn fn_;
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stack_context stack_ctx_;
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StackAllocator stack_alloc_;
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static void deallocate_( obj_t * obj)
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{
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stack_context stack_ctx( obj->stack_ctx_);
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StackAllocator stack_alloc( obj->stack_alloc_);
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obj->unwind_stack();
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obj->~obj_t();
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stack_alloc.deallocate( stack_ctx);
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}
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public:
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#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
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pull_coroutine_object( Fn fn, attributes const& attrs,
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preallocated const& palloc,
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StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
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ctx_t( palloc, this),
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base_t( & this->caller,
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& this->callee,
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stack_unwind == attrs.do_unwind),
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fn_( fn),
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stack_ctx_( palloc.sctx),
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stack_alloc_( stack_alloc)
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{}
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#endif
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pull_coroutine_object( BOOST_RV_REF( Fn) fn, attributes const& attrs,
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preallocated const& palloc,
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StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
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ctx_t( palloc, this),
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base_t( & this->caller,
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& this->callee,
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stack_unwind == attrs.do_unwind),
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#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
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fn_( fn),
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#else
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fn_( boost::forward< Fn >( fn) ),
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#endif
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stack_ctx_( palloc.sctx),
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stack_alloc_( stack_alloc)
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{}
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void run()
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{
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BOOST_ASSERT( ! base_t::unwind_requested() );
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base_t::flags_ |= flag_started;
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base_t::flags_ |= flag_running;
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// create push_coroutine
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typename PushCoro::synth_type b( & this->callee, & this->caller, false);
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PushCoro push_coro( synthesized_t::syntesized, b);
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try
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{ fn_( push_coro); }
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catch ( forced_unwind const&)
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{}
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#if defined( BOOST_CONTEXT_HAS_CXXABI_H )
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catch ( abi::__forced_unwind const&)
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{ throw; }
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#endif
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catch (...)
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{ base_t::except_ = current_exception(); }
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base_t::flags_ |= flag_complete;
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base_t::flags_ &= ~flag_running;
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typename base_t::param_type to;
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this->callee.jump(
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this->caller,
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& to);
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BOOST_ASSERT_MSG( false, "pull_coroutine is complete");
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}
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void destroy()
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{ deallocate_( this); }
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};
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template< typename PushCoro, typename Fn, typename StackAllocator >
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class pull_coroutine_object< PushCoro, void, Fn, StackAllocator > : private pull_coroutine_context,
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public pull_coroutine_impl< void >
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{
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private:
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typedef pull_coroutine_context ctx_t;
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typedef pull_coroutine_impl< void > base_t;
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typedef pull_coroutine_object< PushCoro, void, Fn, StackAllocator > obj_t;
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Fn fn_;
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stack_context stack_ctx_;
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StackAllocator stack_alloc_;
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static void deallocate_( obj_t * obj)
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{
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stack_context stack_ctx( obj->stack_ctx_);
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StackAllocator stack_alloc( obj->stack_alloc_);
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obj->unwind_stack();
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obj->~obj_t();
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stack_alloc.deallocate( stack_ctx);
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}
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public:
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#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
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pull_coroutine_object( Fn fn, attributes const& attrs,
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preallocated const& palloc,
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StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
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ctx_t( palloc, this),
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base_t( & this->caller,
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& this->callee,
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stack_unwind == attrs.do_unwind),
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fn_( fn),
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stack_ctx_( palloc.sctx),
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stack_alloc_( stack_alloc)
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{}
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#endif
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pull_coroutine_object( BOOST_RV_REF( Fn) fn, attributes const& attrs,
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preallocated const& palloc,
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StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
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ctx_t( palloc, this),
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base_t( & this->caller,
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& this->callee,
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stack_unwind == attrs.do_unwind),
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#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
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fn_( fn),
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#else
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fn_( boost::forward< Fn >( fn) ),
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#endif
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stack_ctx_( palloc.sctx),
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stack_alloc_( stack_alloc)
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{}
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void run()
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{
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BOOST_ASSERT( ! base_t::unwind_requested() );
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base_t::flags_ |= flag_started;
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base_t::flags_ |= flag_running;
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// create push_coroutine
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typename PushCoro::synth_type b( & this->callee, & this->caller, false);
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PushCoro push_coro( synthesized_t::syntesized, b);
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try
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{ fn_( push_coro); }
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catch ( forced_unwind const&)
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{}
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#if defined( BOOST_CONTEXT_HAS_CXXABI_H )
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catch ( abi::__forced_unwind const&)
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{ throw; }
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#endif
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catch (...)
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{ base_t::except_ = current_exception(); }
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base_t::flags_ |= flag_complete;
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base_t::flags_ &= ~flag_running;
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typename base_t::param_type to;
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this->callee.jump(
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this->caller,
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& to);
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BOOST_ASSERT_MSG( false, "pull_coroutine is complete");
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}
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void destroy()
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{ deallocate_( this); }
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};
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}}}
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#if defined(BOOST_MSVC)
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# pragma warning(pop)
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#endif
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#ifdef BOOST_HAS_ABI_HEADERS
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# include BOOST_ABI_SUFFIX
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#endif
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#endif // BOOST_COROUTINES_DETAIL_PULL_COROUTINE_OBJECT_H
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