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
|
//
// SharedMemoryImpl.h
//
// Library: Foundation
// Package: Processes
// Module: SharedMemoryImpl
//
// Definition of the SharedMemoryImpl class.
//
// Copyright (c) 2007, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef Foundation_SharedMemoryImpl_INCLUDED
#define Foundation_SharedMemoryImpl_INCLUDED
#include "Poco/Foundation.h"
#include "Poco/SharedMemory.h"
#include "Poco/RefCountedObject.h"
namespace Poco {
class Foundation_API SharedMemoryImpl: public RefCountedObject
/// A dummy implementation of shared memory, for systems
/// that do not have shared memory support.
{
public:
SharedMemoryImpl(const std::string& id, std::size_t size, SharedMemory::AccessMode mode, const void* addr, bool server);
/// Creates or connects to a shared memory object with the given name.
///
/// For maximum portability, name should be a valid Unix filename and not
/// contain any slashes or backslashes.
///
/// An address hint can be passed to the system, specifying the desired
/// start address of the shared memory area. Whether the hint
/// is actually honored is, however, up to the system. Windows platform
/// will generally ignore the hint.
SharedMemoryImpl(const Poco::File& aFile, SharedMemory::AccessMode mode, const void* addr);
/// Maps the entire contents of file into a shared memory segment.
///
/// An address hint can be passed to the system, specifying the desired
/// start address of the shared memory area. Whether the hint
/// is actually honored is, however, up to the system. Windows platform
/// will generally ignore the hint.
char* begin() const;
/// Returns the start address of the shared memory segment.
char* end() const;
/// Returns the one-past-end end address of the shared memory segment.
protected:
~SharedMemoryImpl();
/// Destroys the SharedMemoryImpl.
private:
SharedMemoryImpl();
SharedMemoryImpl(const SharedMemoryImpl&);
SharedMemoryImpl& operator = (const SharedMemoryImpl&);
};
//
// inlines
//
inline char* SharedMemoryImpl::begin() const
{
return 0;
}
inline char* SharedMemoryImpl::end() const
{
return 0;
}
} // namespace Poco
#endif // Foundation_SharedMemoryImpl_INCLUDED
|
