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<!--$Id: memp_set_flags.so,v 1.19 2007/06/07 15:30:46 bostic Exp $--> <!--Copyright (c) 1997,2008 Oracle. All rights reserved.--> <!--See the file LICENSE for redistribution information.--> <html> <head> <title>Berkeley DB: DB_MPOOLFILE->set_flags</title> <meta name="description" content="Berkeley DB: An embedded database programmatic toolkit."> <meta name="keywords" content="embedded,database,programmatic,toolkit,btree,hash,hashing,transaction,transactions,locking,logging,access method,access methods,Java,C,C++"> </head> <body bgcolor=white> <table width="100%"><tr valign=top> <td> <b>DB_MPOOLFILE->set_flags</b> </td> <td align=right> <a href="../../db4-devel-4.7.25/api_c/api_core.html"><img src="../../db4-devel-4.7.25/images/api.gif" alt="API"></a> <a href="../../db4-devel-4.7.25/ref/toc.html"><img src="../../db4-devel-4.7.25/images/ref.gif" alt="Ref"></a></td> </tr></table> <hr size=1 noshade> <tt> <b><pre> #include <db.h> <p> int DB_MPOOLFILE->set_flags(DB_MPOOLFILE *mpf, u_int32_t flags, int onoff) <p> int DB_MPOOLFILE->get_flags(DB_MPOOLFILE *mpf, u_int32_t *flagsp); </pre></b> <hr size=1 noshade> <b>Description: DB_MPOOLFILE->set_flags</b> <p>Configure a file in the cache.</p> <p>To set the flags for a particular database, call the DB_MPOOLFILE->set_flags method using the <a href="../../db4-devel-4.7.25/api_c/mempfile_class.html">DB_MPOOLFILE</a> handle stored in the <b>mpf</b> field of the <a href="../../db4-devel-4.7.25/api_c/db_class.html">DB</a> handle.</p> <p>The DB_MPOOLFILE->set_flags method returns a non-zero error value on failure and 0 on success. </p> <b>Parameters</b> <br> <b>flags</b><ul compact><li>The <b>flags</b> parameter must be set by bitwise inclusively <b>OR</b>'ing together one or more of the following values: <br> <b><a name="DB_MPOOL_NOFILE">DB_MPOOL_NOFILE</a></b><ul compact><li>If set, no backing temporary file will be opened for the specified in-memory database, even if it expands to fill the entire cache. Attempts to create new database pages after the cache has been filled will fail. <p>The DB_MPOOL_NOFILE flag configures a file in the memory pool, not only operations performed using the specified <a href="../../db4-devel-4.7.25/api_c/mempfile_class.html">DB_MPOOLFILE</a> handle.</p> <p>The DB_MPOOL_NOFILE flag may be used to configure Berkeley DB at any time during the life of the application.</p></ul> <b><a name="DB_MPOOL_UNLINK">DB_MPOOL_UNLINK</a></b><ul compact><li>If set, remove the file when the last reference to it is closed. <p>The DB_MPOOL_NOFILE flag configures a file in the memory pool, not only operations performed using the specified <a href="../../db4-devel-4.7.25/api_c/mempfile_class.html">DB_MPOOLFILE</a> handle.</p> <p>The DB_MPOOL_UNLINK flag may be used to configure Berkeley DB at any time during the life of the application.</p></ul> <br></ul> <b>onoff</b><ul compact><li>If <b>onoff</b> is zero, the specified flags are cleared; otherwise they are set.</ul> <br> <hr size=1 noshade> <b>Description: DB_MPOOLFILE->get_flags</b> <p>The DB_MPOOLFILE->get_flags method returns the flags.</p> <p>The DB_MPOOLFILE->get_flags method may be called at any time during the life of the application.</p> <p>The DB_MPOOLFILE->get_flags method returns a non-zero error value on failure and 0 on success. </p> <b>Parameters</b> <br> <b>flagsp</b><ul compact><li>The DB_MPOOLFILE->get_flags method returns the flags in <b>flagsp</b>.</ul> <br> <hr size=1 noshade> <br><b>Class</b> <a href="../../db4-devel-4.7.25/api_c/env_class.html">DB_ENV</a>, <a href="../../db4-devel-4.7.25/api_c/mempfile_class.html">DB_MPOOLFILE</a> <br><b>See Also</b> <a href="../../db4-devel-4.7.25/api_c/memp_list.html">Memory Pools and Related Methods</a> </tt> <table width="100%"><tr><td><br></td><td align=right> <a href="../../db4-devel-4.7.25/api_c/api_core.html"><img src="../../db4-devel-4.7.25/images/api.gif" alt="API"></a><a href="../../db4-devel-4.7.25/ref/toc.html"><img src="../../db4-devel-4.7.25/images/ref.gif" alt="Ref"></a> </td></tr></table> <p><font size=1>Copyright (c) 1996,2008 Oracle. All rights reserved.</font> </body> </html>
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