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diff --git a/bdb/docs/ref/upgrade.3.0/func.html b/bdb/docs/ref/upgrade.3.0/func.html new file mode 100644 index 00000000000..b6f7d816b49 --- /dev/null +++ b/bdb/docs/ref/upgrade.3.0/func.html @@ -0,0 +1,69 @@ +<!--$Id: func.so,v 11.8 2000/03/18 21:43:20 bostic Exp $--> +<!--Copyright 1997, 1998, 1999, 2000 by Sleepycat Software, Inc.--> +<!--All rights reserved.--> +<html> +<head> +<title>Berkeley DB Reference Guide: Release 3.0: function arguments</title> +<meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> +<meta name="keywords" content="embedded,database,programmatic,toolkit,b+tree,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,java,C,C++"> +</head> +<body bgcolor=white> +<table><tr valign=top> +<td><h3><dl><dt>Berkeley DB Reference Guide:<dd>Upgrading Berkeley DB Applications</dl></h3></td> +<td width="1%"><a href="../../ref/upgrade.3.0/envopen.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../../ref/toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../../ref/upgrade.3.0/dbenv.html"><img src="../../images/next.gif" alt="Next"></a> +</td></tr></table> +<p> +<h1 align=center>Release 3.0: function arguments</h1> +<p>In Berkeley DB 3.0, there are no longer separate structures that +represent each subsystem (e.g., DB_LOCKTAB or DB_TXNMGR), and an overall +DB_ENV environment structure. Instead there is only the +DB_ENV structure. This means that DB_ENV references should +be passed around by your application instead of passing around DB_LOCKTAB +or DB_TXNMGR references. +<p>Each of the following functions: +<p><blockquote><pre>lock_detect +lock_get +lock_id +lock_put +lock_stat +lock_vec</pre></blockquote> +<p>should have its first argument, a reference to the DB_LOCKTAB structure, +replaced with a reference to the enclosing DB_ENV structure. For +example, the following line of code from a Berkeley DB 2.X application: +<p><blockquote><pre>DB_LOCKTAB *lt; +DB_LOCK lock; + ret = lock_put(lt, lock);</pre></blockquote> +<p>should now be written as follows: +<p><blockquote><pre>DB_ENV *dbenv; +DB_LOCK *lock; + ret = lock_put(dbenv, lock);</pre></blockquote> +<p>Similarly, all of the functions: +<p><blockquote><pre>log_archive +log_compare +log_file +log_flush +log_get +log_put +log_register +log_stat +log_unregister</pre></blockquote> +<p>should have their DB_LOG argument replaced with a reference to a +DB_ENV structure, and the functions: +<p><blockquote><pre>memp_fopen +memp_register +memp_stat +memp_sync +memp_trickle</pre></blockquote> +<p>should have their DB_MPOOL argument replaced with a reference to a +DB_ENV structure. +<p>You should remove all references to DB_LOCKTAB, DB_LOG, DB_MPOOL, and +DB_TXNMGR structures from your application, they are no longer useful +in any way. In fact, a simple way to identify all of the places that +need to be upgraded is to remove all such structures and variables +they declare, and then compile. You will see a warning message from +your compiler in each case that needs to be upgraded. +<table><tr><td><br></td><td width="1%"><a href="../../ref/upgrade.3.0/envopen.html"><img src="../../images/prev.gif" alt="Prev"></a><a href="../../ref/toc.html"><img src="../../images/ref.gif" alt="Ref"></a><a href="../../ref/upgrade.3.0/dbenv.html"><img src="../../images/next.gif" alt="Next"></a> +</td></tr></table> +<p><font size=1><a href="http://www.sleepycat.com">Copyright Sleepycat Software</a></font> +</body> +</html> |