blob: 2f6aa5067c161c116ba5541dff0a3563ec36c796 (
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
115
116
117
118
119
120
|
// -*- C++ -*-
//=============================================================================
/**
* @file Storable_FlatFileStream.h
*
* $Id$
*
* @author Marina Spivak <marina@cs.wustl.edu>
* @author Byron Harris <harrisb@ociweb.com>
*/
//=============================================================================
#ifndef STORABLE_FLATFILESTREAM_H
#define STORABLE_FLATFILESTREAM_H
#include /**/ "ace/pre.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
#pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "tao/Storable_Base.h"
#include "tao/Storable_Factory.h"
#include "ace/OS_NS_stdio.h"
namespace TAO
{
/**
* @brief A Storable_Base derived class that works with a file stream.
*
*/
class TAO_Export Storable_FlatFileStream : public Storable_Base
{
public:
Storable_FlatFileStream(const ACE_CString & file, const char * mode);
virtual ~Storable_FlatFileStream();
/// Remove a file by name (file is not open)
virtual void remove ();
/// Check if a file exists on disk (file is not open)
virtual int exists ();
/// Open a file (the remaining methods below all require an open file)
virtual int open ();
/// Close an open file
virtual int close ();
/// Acquire a file lock
virtual int flock (int whence, int start, int len);
/// Release a file lock
virtual int funlock (int whence, int start, int len);
/// Returns the last time an open file was changed
virtual time_t last_changed (void);
virtual void rewind (void);
virtual bool flush (void);
/// Force write of storable data to storage.
/// Returns 0 on success, otherwise EOF
virtual int sync (void);
virtual Storable_Base& operator << (const ACE_CString& str);
virtual Storable_Base& operator >> (ACE_CString& str);
virtual Storable_Base& operator << (int i);
virtual Storable_Base& operator >> (int &i);
virtual Storable_Base& operator << (unsigned int i);
virtual Storable_Base& operator >> (unsigned int &i);
virtual Storable_Base& operator << (const TAO_OutputCDR & cdr);
virtual size_t write (size_t size, const char * bytes);
virtual size_t read (size_t size, char * bytes);
private:
ACE_OS::ace_flock_t filelock_;
FILE* fl_;
ACE_CString file_;
ACE_CString mode_;
};
class TAO_Export Storable_FlatFileFactory : public Storable_Factory
{
public:
/// @param directory Directory to contain file passed in
/// create_stream (). The directory is assumed to already exist.
Storable_FlatFileFactory(const ACE_CString & directory);
const ACE_CString & get_directory () const;
~Storable_FlatFileFactory ();
// Factory Methods
/// Create the stream that can operate on a disk file
virtual Storable_Base *create_stream (const ACE_CString & file,
const ACE_TCHAR * mode);
private:
ACE_CString directory_;
};
}
#include /**/ "ace/post.h"
#endif /* STORABLE_FLATFILESTREAM_H */
|
