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73 lines
3.4 KiB
HTML
<!--$Id: env_set_feedback.so,v 10.19 2000/07/09 19:12:39 bostic Exp $-->
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<!--Copyright 1997, 1998, 1999, 2000 by Sleepycat Software, Inc.-->
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<!--All rights reserved.-->
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<html>
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<head>
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<title>Berkeley DB: DbEnv::set_feedback</title>
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<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit.">
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<meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++">
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</head>
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<body bgcolor=white>
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<a name="2"><!--meow--></a>
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<table><tr valign=top>
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<td>
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<h1>DbEnv::set_feedback</h1>
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</td>
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<td width="1%">
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<a href="../api_cxx/cxx_index.html"><img src="../images/api.gif" alt="API"></a><a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a>
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</td></tr></table>
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<hr size=1 noshade>
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<tt>
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<h3><pre>
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#include <db_cxx.h>
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<p>
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int
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DbEnv::set_feedback(
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void (*db_feedback_fcn)(DbEnv *, int opcode, int pct));
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</pre></h3>
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<h1>Description</h1>
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<p>Some operations performed by the Berkeley DB library can take non-trivial
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amounts of time. The DbEnv::set_feedback method can be used by
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applications to monitor progress within these operations.
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<p>When an operation is likely to take a long time, Berkeley DB will call the
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specified callback method. This method must be declared with
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three arguments: the first will be a reference to the enclosing
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environment, the second a flag value, and the third the percent of the
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operation that has been completed, specified as an integer value between
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0 and 100. It is up to the callback method to display this
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information in an appropriate manner.
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<p>The <b>opcode</b> argument may take on any of the following values:
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<p><dl compact>
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<p><dt><a name="DB_RECOVER">DB_RECOVER</a><dd>The environment is being recovered.
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</dl>
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<p>The DbEnv::set_feedback interface may be used to configure Berkeley DB at any time
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during the life of the application.
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<p>The DbEnv::set_feedback method either returns a non-zero error value or throws an exception that
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encapsulates a non-zero error value on failure, and returns 0 on success.
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<h3>Class</h3>
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<a href="../api_cxx/dbenv_class.html">DbEnv</a>
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<h1>See Also</h1>
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<a href="../api_cxx/env_close.html">DbEnv::close</a>,
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<a href="../api_cxx/env_open.html">DbEnv::open</a>,
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<a href="../api_cxx/env_remove.html">DbEnv::remove</a>,
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<a href="../api_cxx/db_err.html">DbEnv::err</a>,
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<a href="../api_cxx/env_strerror.html">DbEnv::strerror</a>,
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<a href="../api_cxx/env_version.html">DbEnv::version</a>,
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<a href="../api_cxx/env_set_cachesize.html">DbEnv::set_cachesize</a>,
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<a href="../api_cxx/env_set_errcall.html">DbEnv::set_errcall</a>,
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<a href="../api_cxx/env_set_errfile.html">DbEnv::set_errfile</a>,
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<a href="../api_cxx/env_set_error_stream.html">DbEnv::set_error_stream</a>,
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<a href="../api_cxx/env_set_errpfx.html">DbEnv::set_errpfx</a>,
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<a href="../api_cxx/env_set_flags.html">DbEnv::set_flags</a>,
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<a href="../api_cxx/env_set_mutexlocks.html">DbEnv::set_mutexlocks</a>,
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<a href="../api_cxx/env_set_paniccall.html">DbEnv::set_paniccall</a>,
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and
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<a href="../api_cxx/env_set_verbose.html">DbEnv::set_verbose</a>.
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</tt>
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<table><tr><td><br></td><td width="1%">
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<a href="../api_cxx/cxx_index.html"><img src="../images/api.gif" alt="API"></a><a href="../ref/toc.html"><img src="../images/ref.gif" alt="Ref"></a>
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</td></tr></table>
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<p><font size=1><a href="http://www.sleepycat.com">Copyright Sleepycat Software</a></font>
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