]>
Commit | Line | Data |
---|---|---|
7c673cae FG |
1 | |
2 | // Copyright Oliver Kowalke 2009. | |
3 | // Distributed under the Boost Software License, Version 1.0. | |
4 | // (See accompanying file LICENSE_1_0.txt or copy at | |
5 | // http://www.boost.org/LICENSE_1_0.txt) | |
6 | ||
7 | #ifndef BOOST_COROUTINES_DETAIL_COROUTINE_CONTEXT_H | |
8 | #define BOOST_COROUTINES_DETAIL_COROUTINE_CONTEXT_H | |
9 | ||
10 | #include <cstddef> | |
11 | ||
12 | #include <boost/assert.hpp> | |
13 | #include <boost/config.hpp> | |
14 | #include <boost/context/detail/fcontext.hpp> | |
15 | ||
16 | #include <boost/coroutine/detail/config.hpp> | |
17 | #include <boost/coroutine/detail/preallocated.hpp> | |
18 | #include <boost/coroutine/stack_context.hpp> | |
19 | ||
20 | #ifdef BOOST_HAS_ABI_HEADERS | |
21 | # include BOOST_ABI_PREFIX | |
22 | #endif | |
23 | ||
24 | namespace boost { | |
25 | namespace coroutines { | |
26 | namespace detail { | |
27 | ||
28 | // class hold stack-context and coroutines execution-context | |
29 | class BOOST_COROUTINES_DECL coroutine_context | |
30 | { | |
31 | private: | |
32 | template< typename Coro > | |
33 | friend void trampoline( context::detail::transfer_t); | |
34 | template< typename Coro > | |
35 | friend void trampoline_void( context::detail::transfer_t); | |
36 | template< typename Coro > | |
37 | friend void trampoline_pull( context::detail::transfer_t); | |
38 | template< typename Coro > | |
39 | friend void trampoline_push( context::detail::transfer_t); | |
40 | template< typename Coro > | |
41 | friend void trampoline_push_void( context::detail::transfer_t); | |
42 | ||
43 | preallocated palloc_; | |
44 | context::detail::fcontext_t ctx_; | |
45 | ||
46 | public: | |
47 | typedef void( * ctx_fn)( context::detail::transfer_t); | |
48 | ||
49 | // default ctor represents the current execution-context | |
50 | coroutine_context(); | |
51 | ||
52 | // ctor creates a new execution-context running coroutine-fn `fn` | |
53 | // `ctx_` will be allocated on top of the stack managed by parameter | |
54 | // `stack_ctx` | |
55 | coroutine_context( ctx_fn fn, preallocated const& palloc); | |
56 | ||
57 | coroutine_context( coroutine_context const&); | |
58 | ||
59 | coroutine_context& operator=( coroutine_context const&); | |
60 | ||
61 | void * jump( coroutine_context &, void * = 0); | |
62 | ||
63 | stack_context & stack_ctx() | |
64 | { return palloc_.sctx; } | |
65 | }; | |
66 | ||
67 | }}} | |
68 | ||
69 | #ifdef BOOST_HAS_ABI_HEADERS | |
70 | # include BOOST_ABI_SUFFIX | |
71 | #endif | |
72 | ||
73 | #endif // BOOST_COROUTINES_DETAIL_COROUTINE_CONTEXT_H |