2011-09-13 17:44:24 +00:00
<?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 > DB_ENV-> 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 / >
< link rel = "prev" href = "envget_mp_tablesize.html" title = "DB_ENV->get_mp_tablesize()" / >
< link rel = "next" href = "mempregister.html" title = "DB_ENV->memp_register()" / >
< / head >
< body >
< div xmlns = "" class = "navheader" >
< div class = "libver" >
< p > Library Version 11.2.5.2< / p >
< / div >
< table width = "100%" summary = "Navigation header" >
< tr >
< th colspan = "3" align = "center" > DB_ENV-> 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
The DB_MPOOLFILE 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 > DB_ENV-> memp_fcreate()< / h2 >
< / div >
< / div >
< / div >
< pre class = "programlisting" > #include < db.h>
int
DB_ENV-> memp_fcreate(DB_ENV *dbenvp, DB_MPOOLFILE **dbmfp,
u_int32_t flags); < / pre >
< p >
The < code class = "methodname" > DB_ENV-> memp_fcreate()< / code > method creates a
< a class = "link" href = "memp.html" title = "Chapter > DB_MPOOLFILE< / 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 = "DB_MPOOLFILE->close()" > DB_MPOOLFILE-> close()< / a > method will discard the returned handle.
< / p >
< p >
The < code class = "methodname" > DB_ENV-> memp_fcreate()< / code > < span >
< span >
method returns a non-zero error value on failure and 0 on success.
< / span >
< / span >
< / p >
< div class = "sect2" lang = "en" xml:lang = "en" >
< div class = "titlepage" >
< div >
< div >
2011-12-20 00:07:10 +00:00
< h3 class = "title" > < a id = "id3733428" > < / a > Parameters< / h3 >
2011-09-13 17:44:24 +00:00
< / div >
< / div >
< / div >
< div class = "sect3" lang = "en" xml:lang = "en" >
< div class = "titlepage" >
< div >
< div >
2011-12-20 00:07:10 +00:00
< h4 class = "title" > < a id = "id3733418" > < / a > dbmfp< / h4 >
2011-09-13 17:44:24 +00:00
< / div >
< / div >
< / div >
< p >
The < code class = "methodname" > DB_ENV-> 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 >
2011-12-20 00:07:10 +00:00
< h4 class = "title" > < a id = "id3733492" > < / a > flags< / h4 >
2011-09-13 17:44:24 +00:00
< / 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 >
2011-12-20 00:07:10 +00:00
< h3 class = "title" > < a id = "id3732965" > < / a > Class< / h3 >
2011-09-13 17:44:24 +00:00
< / div >
< / div >
< / div >
< p >
< a class = "link" href = "env.html" title = "Chapter > DB_ENV< / a > , < a class = "link" href = "memp.html" title = "Chapter > DB_MPOOLFILE< / a >
< / p >
< / div >
< div class = "sect2" lang = "en" xml:lang = "en" >
< div class = "titlepage" >
< div >
< div >
2011-12-20 00:07:10 +00:00
< h3 class = "title" > < a id = "id3733181" > < / a > See Also< / h3 >
2011-09-13 17:44:24 +00:00
< / 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" > DB_ENV-> 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" > > memp_register()< / td >
< / tr >
< / table >
< / div >
< / body >
< / html >
