1 | /* |
2 | Copyright (c) 2005-2019 Intel Corporation |
3 | |
4 | Licensed under the Apache License, Version 2.0 (the "License"); |
5 | you may not use this file except in compliance with the License. |
6 | You may obtain a copy of the License at |
7 | |
8 | http://www.apache.org/licenses/LICENSE-2.0 |
9 | |
10 | Unless required by applicable law or agreed to in writing, software |
11 | distributed under the License is distributed on an "AS IS" BASIS, |
12 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
13 | See the License for the specific language governing permissions and |
14 | limitations under the License. |
15 | */ |
16 | |
17 | #ifndef __TBB_flow_graph_abstractions_H |
18 | #define __TBB_flow_graph_abstractions_H |
19 | |
20 | namespace tbb { |
21 | namespace flow { |
22 | namespace interface10 { |
23 | |
24 | //! Pure virtual template classes that define interfaces for async communication |
25 | class graph_proxy { |
26 | public: |
27 | //! Inform a graph that messages may come from outside, to prevent premature graph completion |
28 | virtual void reserve_wait() = 0; |
29 | |
30 | //! Inform a graph that a previous call to reserve_wait is no longer in effect |
31 | virtual void release_wait() = 0; |
32 | |
33 | virtual ~graph_proxy() {} |
34 | }; |
35 | |
36 | template <typename Input> |
37 | class receiver_gateway : public graph_proxy { |
38 | public: |
39 | //! Type of inputing data into FG. |
40 | typedef Input input_type; |
41 | |
42 | //! Submit signal from an asynchronous activity to FG. |
43 | virtual bool try_put(const input_type&) = 0; |
44 | }; |
45 | |
46 | } //interfaceX |
47 | |
48 | using interface10::graph_proxy; |
49 | using interface10::receiver_gateway; |
50 | |
51 | } //flow |
52 | } //tbb |
53 | #endif |
54 | |