blob: 0b97fd158ab674329019b496da21c7b953a9502a (
plain)
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
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you 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 .
*/
#ifndef _SALHELPER_FUTURE_HXX_
#define _SALHELPER_FUTURE_HXX_
#include <sal/types.h>
#include <osl/diagnose.h>
#include <osl/conditn.hxx>
#include <salhelper/refobj.hxx>
namespace salhelper
{
//----------------------------------------------------------------------------
#ifndef SALHELPER_COPYCTOR_API
#define SALHELPER_COPYCTOR_API(C) C (const C&); C& operator= (const C&)
#endif
//----------------------------------------------------------------------------
template<class value_type>
class FutureValue : protected osl::Condition
{
/** Representation.
*/
value_type m_aValue;
/** Not implemented.
*/
SALHELPER_COPYCTOR_API(FutureValue<value_type>);
public:
inline FutureValue (const value_type& value = value_type()) SAL_THROW(())
: m_aValue (value)
{
Condition::reset();
}
inline ~FutureValue() SAL_THROW(())
{}
inline sal_Bool is() const SAL_THROW(())
{
return const_cast<FutureValue*>(this)->check();
}
inline void set (const value_type& value) SAL_THROW(())
{
m_aValue = value;
Condition::set();
}
inline value_type& get() SAL_THROW(())
{
Condition::wait();
return m_aValue;
}
};
//----------------------------------------------------------------------------
template<class value_type>
class Future : public salhelper::ReferenceObject
{
/** Representation.
*/
FutureValue<value_type> m_aValue;
/** Not implemented.
*/
SALHELPER_COPYCTOR_API(Future<value_type>);
public:
inline Future (const value_type& value = value_type()) SAL_THROW(())
: m_aValue (value)
{}
inline void set (const value_type& value) SAL_THROW(())
{
OSL_PRECOND(!m_aValue.is(), "Future::set(): value already set");
m_aValue.set (value);
}
inline value_type& get() SAL_THROW(())
{
return m_aValue.get();
}
};
//----------------------------------------------------------------------------
} // namespace salhelper
#endif /* !_SALHELPER_FUTURE_HXX_ */
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
