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<!--$Id: env_set_pageyield.so,v 10.6 2000/05/31 15:10:00 bostic Exp $-->
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<h1>DbEnv::set_pageyield</h1>
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<h3><pre>
#include <db_cxx.h>
<p>
static int
DbEnv::set_pageyield(int pageyield);
</pre></h3>
<h1>Description</h1>
<p>Yield the processor whenever requesting a page from the cache. Setting
<b>pageyield</b> to a non-zero value causes Berkeley DB to yield the processor
any time a thread requests a page from the cache.
<p>The DbEnv::set_pageyield interface affects the entire application, not a single
database or database environment.
<p>While the DbEnv::set_pageyield interface may be used to configure Berkeley DB at any time
during the life of the application, it should normally be called before
making any calls to the <a href="../api_c/env_create.html">db_env_create</a> or <a href="../api_c/db_create.html">db_create</a> methods.
<p>This functionality should never be used for any other purpose than stress
testing.
<p>The DbEnv::set_pageyield interface may be used to configure Berkeley DB at any time
during the life of the application.
<p>The DbEnv::set_pageyield 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.
<h1>Errors</h1>
<p><dl compact>
<p><dt>EINVAL<dd>An invalid flag value or parameter was specified.
</dl>
<h3>Class</h3>
<a href="../api_cxx/dbenv_class.html">DbEnv</a>
<h1>See Also</h1>
<a href="../api_cxx/env_close.html">DbEnv::close</a>,
<a href="../api_cxx/env_open.html">DbEnv::open</a>,
<a href="../api_cxx/env_remove.html">DbEnv::remove</a>,
<a href="../api_cxx/db_err.html">DbEnv::err</a>,
<a href="../api_cxx/env_strerror.html">DbEnv::strerror</a>,
<a href="../api_cxx/env_version.html">DbEnv::version</a>,
<a href="../api_cxx/env_set_cachesize.html">DbEnv::set_cachesize</a>,
<a href="../api_cxx/env_set_errcall.html">DbEnv::set_errcall</a>,
<a href="../api_cxx/env_set_errfile.html">DbEnv::set_errfile</a>,
<a href="../api_cxx/env_set_error_stream.html">DbEnv::set_error_stream</a>,
<a href="../api_cxx/env_set_errpfx.html">DbEnv::set_errpfx</a>,
<a href="../api_cxx/env_set_flags.html">DbEnv::set_flags</a>,
<a href="../api_cxx/env_set_mutexlocks.html">DbEnv::set_mutexlocks</a>,
<a href="../api_cxx/env_set_paniccall.html">DbEnv::set_paniccall</a>,
and
<a href="../api_cxx/env_set_verbose.html">DbEnv::set_verbose</a>.
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