1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
/****************************************************************************
* Copyright (C) from 2009 to Present EPAM Systems.
*
* This file is part of Indigo toolkit.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
***************************************************************************/
#ifndef __cancellation_handler_h__
#define __cancellation_handler_h__
#include "base_c/defs.h"
#include "base_cpp/array.h"
#include <memory>
#ifdef _WIN32
#pragma warning(push)
#pragma warning(disable : 4251)
#endif
namespace indigo
{
class DLLEXPORT CancellationHandler
{
public:
virtual bool isCancelled() = 0;
virtual const char* cancelledRequestMessage() = 0;
};
class DLLEXPORT TimeoutCancellationHandler : public CancellationHandler
{
public:
TimeoutCancellationHandler(int mseconds = 0);
virtual ~TimeoutCancellationHandler();
virtual bool isCancelled();
virtual const char* cancelledRequestMessage();
void reset(int mseconds);
private:
Array<char> _message;
int _mseconds;
qword _currentTime;
};
// Global thread-local cancellation handler
DLLEXPORT CancellationHandler* getCancellationHandler();
// Returns previous cancellation handler.
// TAKES Ownership!!!
DLLEXPORT std::unique_ptr<CancellationHandler> resetCancellationHandler(CancellationHandler* handler);
class AutoCancellationHandler
{
public:
AutoCancellationHandler(CancellationHandler*);
~AutoCancellationHandler();
};
} // namespace indigo
#ifdef _WIN32
#pragma warning(pop)
#endif
#endif /* __cancellation_handler_h__ */
/* END OF 'cancellation_handler.H' FILE */
|
