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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_COROUTINE_CONTEXT_H
- #define BOOST_COROUTINES_DETAIL_COROUTINE_CONTEXT_H
- #include <cstddef>
- #include <boost/assert.hpp>
- #include <boost/config.hpp>
- #include <boost/context/detail/fcontext.hpp>
- #include <boost/coroutine/detail/config.hpp>
- #include <boost/coroutine/detail/preallocated.hpp>
- #include <boost/coroutine/stack_context.hpp>
- #ifdef BOOST_HAS_ABI_HEADERS
- # include BOOST_ABI_PREFIX
- #endif
- namespace boost {
- namespace coroutines {
- namespace detail {
- // class hold stack-context and coroutines execution-context
- class BOOST_COROUTINES_DECL coroutine_context
- {
- private:
- template< typename Coro >
- friend void trampoline( context::detail::transfer_t);
- template< typename Coro >
- friend void trampoline_void( context::detail::transfer_t);
- template< typename Coro >
- friend void trampoline_pull( context::detail::transfer_t);
- template< typename Coro >
- friend void trampoline_push( context::detail::transfer_t);
- template< typename Coro >
- friend void trampoline_push_void( context::detail::transfer_t);
- preallocated palloc_;
- context::detail::fcontext_t ctx_;
- public:
- typedef void( * ctx_fn)( context::detail::transfer_t);
- // default ctor represents the current execution-context
- coroutine_context();
- // ctor creates a new execution-context running coroutine-fn `fn`
- // `ctx_` will be allocated on top of the stack managed by parameter
- // `stack_ctx`
- coroutine_context( ctx_fn fn, preallocated const& palloc);
- coroutine_context( coroutine_context const&);
- coroutine_context& operator=( coroutine_context const&);
- void * jump( coroutine_context &, void * = 0);
- stack_context & stack_ctx()
- { return palloc_.sctx; }
- };
- }}}
- #ifdef BOOST_HAS_ABI_HEADERS
- # include BOOST_ABI_SUFFIX
- #endif
- #endif // BOOST_COROUTINES_DETAIL_COROUTINE_CONTEXT_H
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