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-rw-r--r--boost/coroutine/detail/symmetric_coroutine_object.hpp281
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diff --git a/boost/coroutine/detail/symmetric_coroutine_object.hpp b/boost/coroutine/detail/symmetric_coroutine_object.hpp
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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_SYMMETRIC_COROUTINE_OBJECT_H
+#define BOOST_COROUTINES_DETAIL_SYMMETRIC_COROUTINE_OBJECT_H
+
+#include <boost/assert.hpp>
+#include <boost/config.hpp>
+#include <boost/move/move.hpp>
+
+#include <boost/coroutine/detail/config.hpp>
+#include <boost/coroutine/detail/flags.hpp>
+#include <boost/coroutine/detail/symmetric_coroutine_impl.hpp>
+#include <boost/coroutine/detail/symmetric_coroutine_yield.hpp>
+#include <boost/coroutine/exceptions.hpp>
+#include <boost/coroutine/stack_context.hpp>
+
+#ifdef BOOST_HAS_ABI_HEADERS
+# include BOOST_ABI_PREFIX
+#endif
+
+namespace boost {
+namespace coroutines {
+
+struct stack_context;
+
+namespace detail {
+
+template< typename R, typename Fn, typename StackAllocator >
+class symmetric_coroutine_object : public symmetric_coroutine_impl< R >
+{
+private:
+ typedef symmetric_coroutine_impl< R > impl_t;
+ typedef symmetric_coroutine_object< 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
+ symmetric_coroutine_object( Fn fn, attributes const& attrs,
+ stack_context const& stack_ctx,
+ stack_context const& internal_stack_ctx,
+ StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
+ impl_t( internal_stack_ctx,
+ stack_unwind == attrs.do_unwind,
+ fpu_preserved == attrs.preserve_fpu),
+ fn_( fn),
+ stack_ctx_( stack_ctx),
+ stack_alloc_( stack_alloc)
+ {}
+#endif
+
+ symmetric_coroutine_object( BOOST_RV_REF( Fn) fn, attributes const& attrs,
+ stack_context const& stack_ctx,
+ stack_context const& internal_stack_ctx,
+ StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
+ impl_t( internal_stack_ctx,
+ stack_unwind == attrs.do_unwind,
+ fpu_preserved == attrs.preserve_fpu),
+#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
+ fn_( fn),
+#else
+ fn_( boost::forward< Fn >( fn) ),
+#endif
+ stack_ctx_( stack_ctx),
+ stack_alloc_( stack_alloc)
+ {}
+
+ void run( R * r) BOOST_NOEXCEPT
+ {
+ BOOST_ASSERT( ! impl_t::unwind_requested() );
+
+ impl_t::flags_ |= flag_started;
+ impl_t::flags_ |= flag_running;
+ try
+ {
+ symmetric_coroutine_yield< R > yc( this, r);
+ fn_( yc);
+ }
+ catch ( forced_unwind const&)
+ {}
+ catch (...)
+ { std::terminate(); }
+
+ impl_t::flags_ |= flag_complete;
+ impl_t::flags_ &= ~flag_running;
+ typename impl_t::param_type to;
+ impl_t::callee_.jump(
+ impl_t::caller_,
+ reinterpret_cast< intptr_t >( & to),
+ impl_t::preserve_fpu() );
+ BOOST_ASSERT_MSG( false, "coroutine is complete");
+ }
+
+ void destroy()
+ { deallocate_( this); }
+};
+
+template< typename R, typename Fn, typename StackAllocator >
+class symmetric_coroutine_object< R &, Fn, StackAllocator > : public symmetric_coroutine_impl< R & >
+{
+private:
+ typedef symmetric_coroutine_impl< R & > impl_t;
+ typedef symmetric_coroutine_object< 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
+ symmetric_coroutine_object( Fn fn, attributes const& attrs,
+ stack_context const& stack_ctx,
+ stack_context const& internal_stack_ctx,
+ StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
+ impl_t( internal_stack_ctx,
+ stack_unwind == attrs.do_unwind,
+ fpu_preserved == attrs.preserve_fpu),
+ fn_( fn),
+ stack_ctx_( stack_ctx),
+ stack_alloc_( stack_alloc)
+ {}
+#endif
+
+ symmetric_coroutine_object( BOOST_RV_REF( Fn) fn, attributes const& attrs,
+ stack_context const& stack_ctx,
+ stack_context const& internal_stack_ctx,
+ StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
+ impl_t( internal_stack_ctx,
+ stack_unwind == attrs.do_unwind,
+ fpu_preserved == attrs.preserve_fpu),
+#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
+ fn_( fn),
+#else
+ fn_( boost::forward< Fn >( fn) ),
+#endif
+ stack_ctx_( stack_ctx),
+ stack_alloc_( stack_alloc)
+ {}
+
+ void run( R * r) BOOST_NOEXCEPT
+ {
+ BOOST_ASSERT( ! impl_t::unwind_requested() );
+
+ impl_t::flags_ |= flag_started;
+ impl_t::flags_ |= flag_running;
+ try
+ {
+ symmetric_coroutine_yield< R & > yc( this, r);
+ fn_( yc);
+ }
+ catch ( forced_unwind const&)
+ {}
+ catch (...)
+ { std::terminate(); }
+
+ impl_t::flags_ |= flag_complete;
+ impl_t::flags_ &= ~flag_running;
+ typename impl_t::param_type to;
+ impl_t::callee_.jump(
+ impl_t::caller_,
+ reinterpret_cast< intptr_t >( & to),
+ impl_t::preserve_fpu() );
+ BOOST_ASSERT_MSG( false, "coroutine is complete");
+ }
+
+ void destroy()
+ { deallocate_( this); }
+};
+
+template< typename Fn, typename StackAllocator >
+class symmetric_coroutine_object< void, Fn, StackAllocator > : public symmetric_coroutine_impl< void >
+{
+private:
+ typedef symmetric_coroutine_impl< void > impl_t;
+ typedef symmetric_coroutine_object< 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
+ symmetric_coroutine_object( Fn fn, attributes const& attrs,
+ stack_context const& stack_ctx,
+ stack_context const& internal_stack_ctx,
+ StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
+ impl_t( internal_stack_ctx,
+ stack_unwind == attrs.do_unwind,
+ fpu_preserved == attrs.preserve_fpu),
+ fn_( fn),
+ stack_ctx_( stack_ctx),
+ stack_alloc_( stack_alloc)
+ {}
+#endif
+
+ symmetric_coroutine_object( BOOST_RV_REF( Fn) fn, attributes const& attrs,
+ stack_context const& stack_ctx,
+ stack_context const& internal_stack_ctx,
+ StackAllocator const& stack_alloc) BOOST_NOEXCEPT :
+ impl_t( internal_stack_ctx,
+ stack_unwind == attrs.do_unwind,
+ fpu_preserved == attrs.preserve_fpu),
+#ifdef BOOST_NO_CXX11_RVALUE_REFERENCES
+ fn_( fn),
+#else
+ fn_( boost::forward< Fn >( fn) ),
+#endif
+ stack_ctx_( stack_ctx),
+ stack_alloc_( stack_alloc)
+ {}
+
+ void run() BOOST_NOEXCEPT
+ {
+ BOOST_ASSERT( ! impl_t::unwind_requested() );
+
+ impl_t::flags_ |= flag_started;
+ impl_t::flags_ |= flag_running;
+ try
+ {
+ symmetric_coroutine_yield< void > yc( this);
+ fn_( yc);
+ }
+ catch ( forced_unwind const&)
+ {}
+ catch (...)
+ { std::terminate(); }
+
+ impl_t::flags_ |= flag_complete;
+ impl_t::flags_ &= ~flag_running;
+ typename impl_t::param_type to;
+ impl_t::callee_.jump(
+ impl_t::caller_,
+ reinterpret_cast< intptr_t >( & to),
+ impl_t::preserve_fpu() );
+ BOOST_ASSERT_MSG( false, "coroutine is complete");
+ }
+
+ void destroy()
+ { deallocate_( this); }
+};
+
+}}}
+
+#ifdef BOOST_HAS_ABI_HEADERS
+# include BOOST_ABI_SUFFIX
+#endif
+
+#endif // BOOST_COROUTINES_DETAIL_SYMMETRIC_COROUTINE_OBJECT_H
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