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_global_control_H |
18 | #define __TBB_global_control_H |
19 | |
20 | #include "tbb_stddef.h" |
21 | |
22 | namespace tbb { |
23 | namespace interface9 { |
24 | |
25 | class global_control { |
26 | public: |
27 | enum parameter { |
28 | max_allowed_parallelism, |
29 | thread_stack_size, |
30 | parameter_max // insert new parameters above this point |
31 | }; |
32 | |
33 | global_control(parameter p, size_t value) : |
34 | my_value(value), my_next(NULL), my_param(p) { |
35 | __TBB_ASSERT(my_param < parameter_max, "Invalid parameter" ); |
36 | #if __TBB_WIN8UI_SUPPORT && (_WIN32_WINNT < 0x0A00) |
37 | // For Windows 8 Store* apps it's impossible to set stack size |
38 | if (p==thread_stack_size) |
39 | return; |
40 | #elif __TBB_x86_64 && (_WIN32 || _WIN64) |
41 | if (p==thread_stack_size) |
42 | __TBB_ASSERT_RELEASE((unsigned)value == value, "Stack size is limited to unsigned int range" ); |
43 | #endif |
44 | if (my_param==max_allowed_parallelism) |
45 | __TBB_ASSERT_RELEASE(my_value>0, "max_allowed_parallelism cannot be 0." ); |
46 | internal_create(); |
47 | } |
48 | |
49 | ~global_control() { |
50 | __TBB_ASSERT(my_param < parameter_max, "Invalid parameter. Probably the object was corrupted." ); |
51 | #if __TBB_WIN8UI_SUPPORT && (_WIN32_WINNT < 0x0A00) |
52 | // For Windows 8 Store* apps it's impossible to set stack size |
53 | if (my_param==thread_stack_size) |
54 | return; |
55 | #endif |
56 | internal_destroy(); |
57 | } |
58 | |
59 | static size_t active_value(parameter p) { |
60 | __TBB_ASSERT(p < parameter_max, "Invalid parameter" ); |
61 | return active_value((int)p); |
62 | } |
63 | private: |
64 | size_t my_value; |
65 | global_control *my_next; |
66 | parameter my_param; |
67 | |
68 | void __TBB_EXPORTED_METHOD internal_create(); |
69 | void __TBB_EXPORTED_METHOD internal_destroy(); |
70 | static size_t __TBB_EXPORTED_FUNC active_value(int param); |
71 | }; |
72 | } // namespace interface9 |
73 | |
74 | using interface9::global_control; |
75 | |
76 | } // tbb |
77 | |
78 | #endif // __TBB_global_control_H |
79 | |