blob: 43bf70ac94455b304369d352e14100bba53afa81 (
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
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>DbEnv::memp_fcreate()</title>
<link rel="stylesheet" href="apiReference.css" type="text/css" />
<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
<link rel="start" href="index.html" title="Berkeley DB C++ API Reference" />
<link rel="up" href="memp.html" title="Chapter 9. The DbMpoolFile Handle" />
<link rel="prev" href="envget_mp_tablesize.html" title="DbEnv::get_mp_tablesize()" />
<link rel="next" href="mempregister.html" title="DbEnv::memp_register()" />
</head>
<body>
<div xmlns="" class="navheader">
<div class="libver">
<p>Library Version 12.1.6.1</p>
</div>
<table width="100%" summary="Navigation header">
<tr>
<th colspan="3" align="center">DbEnv::memp_fcreate()</th>
</tr>
<tr>
<td width="20%" align="left"><a accesskey="p" href="envget_mp_tablesize.html">Prev</a> </td>
<th width="60%" align="center">Chapter 9.
The DbMpoolFile Handle
</th>
<td width="20%" align="right"> <a accesskey="n" href="mempregister.html">Next</a></td>
</tr>
</table>
<hr />
</div>
<div class="sect1" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h2 class="title" style="clear: both"><a id="mempfcreate"></a>DbEnv::memp_fcreate()</h2>
</div>
</div>
</div>
<pre class="programlisting">#include <db_cxx.h>
int
DbEnv::memp_fcreate(DbMpoolFile **dbmfp, u_int32_t flags);</pre>
<p>
The <code class="methodname">DbEnv::memp_fcreate()</code> method creates a
<a class="link" href="memp.html" title="Chapter 9. The DbMpoolFile Handle">DbMpoolFile</a> structure that is the handle for a Berkeley DB
cache (that is, a shared memory buffer pool file). A pointer to this structure is returned in the memory to
which <span class="bold"><strong>dbmfp</strong></span> refers. Calling the
<a class="xref" href="mempfclose.html" title="DbMpoolFile::close()">DbMpoolFile::close()</a> method will discard the returned handle.
</p>
<p>
The <code class="methodname">DbEnv::memp_fcreate()</code> <span>
<span>
method either returns a non-zero error value or throws an
exception that encapsulates a non-zero error value on
failure, and returns 0 on success.
</span>
</span>
</p>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="idp3299560"></a>Parameters</h3>
</div>
</div>
</div>
<div class="sect3" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h4 class="title"><a id="idp3299024"></a>dbmfp</h4>
</div>
</div>
</div>
<p>
The <code class="methodname">DbEnv::memp_fcreate()</code>
method returns a pointer to a mpool structure in
<span class="bold"><strong>dbmfp</strong></span>.
</p>
</div>
<div class="sect3" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h4 class="title"><a id="idp3303456"></a>flags</h4>
</div>
</div>
</div>
<p>
The <span class="bold"><strong>flags</strong></span> parameter is currently
unused, and must be set to 0.
</p>
</div>
</div>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="idp3301720"></a>Class</h3>
</div>
</div>
</div>
<p>
<a class="link" href="env.html" title="Chapter 5. The DbEnv Handle">DbEnv</a>, <a class="link" href="memp.html" title="Chapter 9. The DbMpoolFile Handle">DbMpoolFile</a>
</p>
</div>
<div class="sect2" lang="en" xml:lang="en">
<div class="titlepage">
<div>
<div>
<h3 class="title"><a id="idp3305952"></a>See Also</h3>
</div>
</div>
</div>
<p>
<a class="xref" href="memp.html#memplist" title="Memory Pools and Related Methods">Memory Pools and Related Methods</a>
</p>
</div>
</div>
<div class="navfooter">
<hr />
<table width="100%" summary="Navigation footer">
<tr>
<td width="40%" align="left"><a accesskey="p" href="envget_mp_tablesize.html">Prev</a> </td>
<td width="20%" align="center">
<a accesskey="u" href="memp.html">Up</a>
</td>
<td width="40%" align="right"> <a accesskey="n" href="mempregister.html">Next</a></td>
</tr>
<tr>
<td width="40%" align="left" valign="top">DbEnv::get_mp_tablesize() </td>
<td width="20%" align="center">
<a accesskey="h" href="index.html">Home</a>
</td>
<td width="40%" align="right" valign="top"> DbEnv::memp_register()</td>
</tr>
</table>
</div>
</body>
</html>
|
