File: txnset_priority.html

package info (click to toggle)
db 5.1.29-9%2Bdeb8u1
  • links: PTS, VCS
  • area: main
  • in suites: jessie
  • size: 150,396 kB
  • sloc: ansic: 400,169; java: 94,399; tcl: 70,967; sh: 37,399; cs: 30,758; cpp: 21,132; perl: 14,227; xml: 9,854; makefile: 3,777; yacc: 1,003; awk: 942; sql: 801; erlang: 461; python: 216; php: 24; asm: 14
file content (163 lines) | stat: -rw-r--r-- 6,062 bytes parent folder | download | duplicates (3)
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
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
<?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>DbTxn::set_priority()</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="txn.html" title="Chapter 13.  The DbTxn Handle" />
    <link rel="prev" href="txnset_name.html" title="DbTxn::set_name()" />
    <link rel="next" href="txnset_timeout.html" title="DbTxn::set_timeout()" />
  </head>
  <body>
    <div class="navheader">
      <table width="100%" summary="Navigation header">
        <tr>
          <th colspan="3" align="center">DbTxn::set_priority()</th>
        </tr>
        <tr>
          <td width="20%" align="left"><a accesskey="p" href="txnset_name.html">Prev</a> </td>
          <th width="60%" align="center">Chapter 13. 
                The DbTxn Handle 
        </th>
          <td width="20%" align="right"> <a accesskey="n" href="txnset_timeout.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="txnset_priority"></a>DbTxn::set_priority()</h2>
          </div>
        </div>
      </div>
      <pre class="programlisting">#include &lt;db_cxx.h&gt;
 
int
DbTxn::set_priority(u_int32_t priority);</pre>
      <p>
         The <code class="methodname">DbTxn::set_priority()</code> method sets the
         priority for the transaction. The deadlock detector will reject
         lock requests from lower priority transactions before those from
         higher priority transactions.
    </p>
      <p>
         By default, all transactions are created with a priority of 100.
    </p>
      <p>
         The <code class="methodname">DbTxn::set_priority()</code> method may be
         called at any time during the life of the transaction.
    </p>
      <p>
         The <code class="methodname">DbTxn::set_priority()</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="idp55003512"></a>Parameters</h3>
            </div>
          </div>
        </div>
        <div class="sect3" lang="en" xml:lang="en">
          <div class="titlepage">
            <div>
              <div>
                <h4 class="title"><a id="idp55002864"></a>priority</h4>
              </div>
            </div>
          </div>
          <p>
                  The <span class="bold"><strong>priority</strong></span> parameter
                  must be a value between 0 and 2^32-1.
             </p>
        </div>
      </div>
      <div class="sect2" lang="en" xml:lang="en">
        <div class="titlepage">
          <div>
            <div>
              <h3 class="title"><a id="idp54995608"></a>Errors</h3>
            </div>
          </div>
        </div>
        <p>
             The <code class="methodname">DbTxn::set_priority()</code> <span>
            
            <span>
                method may fail and throw a <a class="link" href="dbexception.html" title="Chapter 6. The DbException Class">DbException</a> 
                exception, encapsulating one of the following non-zero errors, or return one
                of the following non-zero errors:
            </span>
        </span>
        </p>
        <div class="sect3" lang="en" xml:lang="en">
          <div class="titlepage">
            <div>
              <div>
                <h4 class="title"><a id="idp55011888"></a>EINVAL</h4>
              </div>
            </div>
          </div>
          <p>
                An invalid flag value or parameter was specified.
            </p>
        </div>
      </div>
      <div class="sect2" lang="en" xml:lang="en">
        <div class="titlepage">
          <div>
            <div>
              <h3 class="title"><a id="idp55010592"></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="txn.html" title="Chapter 13.  The DbTxn Handle">DbTxn</a> 
            </p>
      </div>
      <div class="sect2" lang="en" xml:lang="en">
        <div class="titlepage">
          <div>
            <div>
              <h3 class="title"><a id="idp55013216"></a>See Also</h3>
            </div>
          </div>
        </div>
        <p>
             <a class="xref" href="txn.html#txnlist" title="Transaction Subsystem and Related Methods">Transaction Subsystem 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="txnset_name.html">Prev</a> </td>
          <td width="20%" align="center">
            <a accesskey="u" href="txn.html">Up</a>
          </td>
          <td width="40%" align="right"> <a accesskey="n" href="txnset_timeout.html">Next</a></td>
        </tr>
        <tr>
          <td width="40%" align="left" valign="top">DbTxn::set_name() </td>
          <td width="20%" align="center">
            <a accesskey="h" href="index.html">Home</a>
          </td>
          <td width="40%" align="right" valign="top"> DbTxn::set_timeout()</td>
        </tr>
      </table>
    </div>
  </body>
</html>