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- // 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_DETAIL_PUSH_COROUTINE_OBJECT_H
- #define BOOST_COROUTINES_DETAIL_PUSH_COROUTINE_OBJECT_H
- #include <boost/assert.hpp>
- #include <boost/config.hpp>
- #include <boost/context/detail/config.hpp>
- #include <boost/cstdint.hpp>
- #include <boost/exception_ptr.hpp>
- #include <boost/move/move.hpp>
- #include <boost/coroutine/detail/config.hpp>
- #include <boost/coroutine/detail/coroutine_context.hpp>
- #include <boost/coroutine/detail/flags.hpp>
- #include <boost/coroutine/detail/preallocated.hpp>
- #include <boost/coroutine/detail/push_coroutine_impl.hpp>
- #include <boost/coroutine/detail/trampoline_push.hpp>
- #include <boost/coroutine/exceptions.hpp>
- #include <boost/coroutine/flags.hpp>
- #include <boost/coroutine/stack_context.hpp>
- #ifdef BOOST_HAS_ABI_HEADERS
- # include BOOST_ABI_PREFIX
- #endif
- #if defined(BOOST_MSVC)
- # pragma warning(push)
- # pragma warning(disable:4355)
- #endif
- namespace boost {
- namespace coroutines {
- namespace detail {
- struct push_coroutine_context
- {
- coroutine_context caller;
- coroutine_context callee;
- template< typename Coro >
- push_coroutine_context( preallocated const& palloc, Coro *) :
- caller(),
- callee( trampoline_push< Coro >, palloc)
- {}
- };
- struct push_coroutine_context_void
- {
- coroutine_context caller;
- coroutine_context callee;
- template< typename Coro >
- push_coroutine_context_void( preallocated const& palloc, Coro *) :
- caller(),
- callee( trampoline_push_void< Coro >, palloc)
- {}
- };
- template< typename PullCoro, typename R, typename Fn, typename StackAllocator >
- class push_coroutine_object : private push_coroutine_context,
- public push_coroutine_impl< R >
- {
- private:
- typedef push_coroutine_context ctx_t;
- typedef push_coroutine_impl< R > base_t;
- typedef push_coroutine_object< PullCoro, R, Fn, StackAllocator > obj_t;
- Fn fn_;
- stack_context stack_ctx_;
- StackAllocator stack_alloc_;
- static void deallocate_( obj_t * obj)
- {
- stack_context stack_ctx( obj->stack_ctx_);
- StackAllocator stack_alloc( obj->stack_alloc_);
- obj->unwind_stack();
- obj->~obj_t();
- stack_alloc.deallocate( stack_ctx);
- }
- public:
- #ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
- push_coroutine_object( Fn fn, attributes const& attrs,
- preallocated const& palloc,
- StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
- ctx_t( palloc, this),
- base_t( & this->caller,
- & this->callee,
- stack_unwind == attrs.do_unwind),
- fn_( fn),
- stack_ctx_( palloc.sctx),
- stack_alloc_( stack_alloc)
- {}
- #endif
- push_coroutine_object( BOOST_RV_REF( Fn) fn, attributes const& attrs,
- preallocated const& palloc,
- StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
- ctx_t( palloc, this),
- base_t( & this->caller,
- & this->callee,
- stack_unwind == attrs.do_unwind),
- #ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
- fn_( fn),
- #else
- fn_( boost::forward< Fn >( fn) ),
- #endif
- stack_ctx_( palloc.sctx),
- stack_alloc_( stack_alloc)
- {}
- void run( R * result)
- {
- BOOST_ASSERT( ! base_t::unwind_requested() );
- base_t::flags_ |= flag_started;
- base_t::flags_ |= flag_running;
- // create push_coroutine
- typename PullCoro::synth_type b( & this->callee, & this->caller, false, result);
- PullCoro pull_coro( synthesized_t::syntesized, b);
- try
- { fn_( pull_coro); }
- catch ( forced_unwind const&)
- {}
- #if defined( BOOST_CONTEXT_HAS_CXXABI_H )
- catch ( abi::__forced_unwind const&)
- { throw; }
- #endif
- catch (...)
- { base_t::except_ = current_exception(); }
- base_t::flags_ |= flag_complete;
- base_t::flags_ &= ~flag_running;
- typename base_t::param_type to;
- this->callee.jump(
- this->caller,
- & to);
- BOOST_ASSERT_MSG( false, "pull_coroutine is complete");
- }
- void destroy()
- { deallocate_( this); }
- };
- template< typename PullCoro, typename R, typename Fn, typename StackAllocator >
- class push_coroutine_object< PullCoro, R &, Fn, StackAllocator > : private push_coroutine_context,
- public push_coroutine_impl< R & >
- {
- private:
- typedef push_coroutine_context ctx_t;
- typedef push_coroutine_impl< R & > base_t;
- typedef push_coroutine_object< PullCoro, R &, Fn, StackAllocator > obj_t;
- Fn fn_;
- stack_context stack_ctx_;
- StackAllocator stack_alloc_;
- static void deallocate_( obj_t * obj)
- {
- stack_context stack_ctx( obj->stack_ctx_);
- StackAllocator stack_alloc( obj->stack_alloc_);
- obj->unwind_stack();
- obj->~obj_t();
- stack_alloc.deallocate( stack_ctx);
- }
- public:
- #ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
- push_coroutine_object( Fn fn, attributes const& attrs,
- preallocated const& palloc,
- StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
- ctx_t( palloc, this),
- base_t( & this->caller,
- & this->callee,
- stack_unwind == attrs.do_unwind),
- fn_( fn),
- stack_ctx_( palloc.sctx),
- stack_alloc_( stack_alloc)
- {}
- #endif
- push_coroutine_object( BOOST_RV_REF( Fn) fn, attributes const& attrs,
- preallocated const& palloc,
- StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
- ctx_t( palloc, this),
- base_t( & this->caller,
- & this->callee,
- stack_unwind == attrs.do_unwind),
- #ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
- fn_( fn),
- #else
- fn_( boost::forward< Fn >( fn) ),
- #endif
- stack_ctx_( palloc.sctx),
- stack_alloc_( stack_alloc)
- {}
- void run( R * result)
- {
- BOOST_ASSERT( ! base_t::unwind_requested() );
- base_t::flags_ |= flag_started;
- base_t::flags_ |= flag_running;
- // create push_coroutine
- typename PullCoro::synth_type b( & this->callee, & this->caller, false, result);
- PullCoro push_coro( synthesized_t::syntesized, b);
- try
- { fn_( push_coro); }
- catch ( forced_unwind const&)
- {}
- #if defined( BOOST_CONTEXT_HAS_CXXABI_H )
- catch ( abi::__forced_unwind const&)
- { throw; }
- #endif
- catch (...)
- { base_t::except_ = current_exception(); }
- base_t::flags_ |= flag_complete;
- base_t::flags_ &= ~flag_running;
- typename base_t::param_type to;
- this->callee.jump(
- this->caller,
- & to);
- BOOST_ASSERT_MSG( false, "pull_coroutine is complete");
- }
- void destroy()
- { deallocate_( this); }
- };
- template< typename PullCoro, typename Fn, typename StackAllocator >
- class push_coroutine_object< PullCoro, void, Fn, StackAllocator > : private push_coroutine_context_void,
- public push_coroutine_impl< void >
- {
- private:
- typedef push_coroutine_context_void ctx_t;
- typedef push_coroutine_impl< void > base_t;
- typedef push_coroutine_object< PullCoro, void, Fn, StackAllocator > obj_t;
- Fn fn_;
- stack_context stack_ctx_;
- StackAllocator stack_alloc_;
- static void deallocate_( obj_t * obj)
- {
- stack_context stack_ctx( obj->stack_ctx_);
- StackAllocator stack_alloc( obj->stack_alloc_);
- obj->unwind_stack();
- obj->~obj_t();
- stack_alloc.deallocate( stack_ctx);
- }
- public:
- #ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
- push_coroutine_object( Fn fn, attributes const& attrs,
- preallocated const& palloc,
- StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
- ctx_t( palloc, this),
- base_t( & this->caller,
- & this->callee,
- stack_unwind == attrs.do_unwind),
- fn_( fn),
- stack_ctx_( palloc.sctx),
- stack_alloc_( stack_alloc)
- {}
- #endif
- push_coroutine_object( BOOST_RV_REF( Fn) fn, attributes const& attrs,
- preallocated const& palloc,
- StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
- ctx_t( palloc, this),
- base_t( & this->caller,
- & this->callee,
- stack_unwind == attrs.do_unwind),
- #ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
- fn_( fn),
- #else
- fn_( boost::forward< Fn >( fn) ),
- #endif
- stack_ctx_( palloc.sctx),
- stack_alloc_( stack_alloc)
- {}
- void run()
- {
- BOOST_ASSERT( ! base_t::unwind_requested() );
- base_t::flags_ |= flag_started;
- base_t::flags_ |= flag_running;
- // create push_coroutine
- typename PullCoro::synth_type b( & this->callee, & this->caller, false);
- PullCoro push_coro( synthesized_t::syntesized, b);
- try
- { fn_( push_coro); }
- catch ( forced_unwind const&)
- {}
- #if defined( BOOST_CONTEXT_HAS_CXXABI_H )
- catch ( abi::__forced_unwind const&)
- { throw; }
- #endif
- catch (...)
- { base_t::except_ = current_exception(); }
- base_t::flags_ |= flag_complete;
- base_t::flags_ &= ~flag_running;
- typename base_t::param_type to;
- this->callee.jump(
- this->caller,
- & to);
- BOOST_ASSERT_MSG( false, "pull_coroutine is complete");
- }
- void destroy()
- { deallocate_( this); }
- };
- }}}
- #if defined(BOOST_MSVC)
- # pragma warning(pop)
- #endif
- #ifdef BOOST_HAS_ABI_HEADERS
- # include BOOST_ABI_SUFFIX
- #endif
- #endif // BOOST_COROUTINES_DETAIL_PUSH_COROUTINE_OBJECT_H
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