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<h1>db_env_set_func_sleep</h1>
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<h3><pre>
#include &lt;db.h&gt;
<p>
int
db_env_set_func_sleep(int (*func_sleep)(u_long seconds, u_long microseconds));
</pre></h3>
<h1>Description</h1>
<p>The Berkeley DB library requires the ability to cause a process to suspend itself
for a period of time, relinquishing control of the processor to any other
waiting thread of control.  The <b>func_sleep</b> argument must conform
to the following interface:
<p><blockquote><pre>int sleep(u_long seconds, u_long microseconds);</pre></blockquote>
<p>The <b>seconds</b> and <b>microseconds</b> arguments specify the amount
of time to wait until the suspending thread of control should run again.
<p>The <b>seconds</b> and <b>microseconds</b> arguments may not be
normalized when the <b>sleep</b> function is called, i.e., the
<b>microseconds</b> argument may be greater than 1000000.
<p>The <b>func_sleep</b> function must return the value of <b>errno</b> on
failure and 0 on success.
<p>The db_env_set_func_sleep interface affects the entire application, not a single
database or database environment.
<p>While the db_env_set_func_sleep 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> functions.
<p>The db_env_set_func_sleep function returns a non-zero error value on failure and 0 on success.
<h1>Errors</h1>
<p><dl compact>
<p><dt>EINVAL<dd>An invalid flag value or parameter was specified.
</dl>
<h1>See Also</h1>
<a href="../api_c/set_func_close.html">db_env_set_func_close</a>,
<a href="../api_c/set_func_dirfree.html">db_env_set_func_dirfree</a>,
<a href="../api_c/set_func_dirlist.html">db_env_set_func_dirlist</a>,
<a href="../api_c/set_func_exists.html">db_env_set_func_exists</a>,
<a href="../api_c/set_func_free.html">db_env_set_func_free</a>,
<a href="../api_c/set_func_fsync.html">db_env_set_func_fsync</a>,
<a href="../api_c/set_func_ioinfo.html">db_env_set_func_ioinfo</a>,
<a href="../api_c/set_func_malloc.html">db_env_set_func_malloc</a>,
<a href="../api_c/set_func_map.html">db_env_set_func_map</a>,
<a href="../api_c/set_func_open.html">db_env_set_func_open</a>,
<a href="../api_c/set_func_read.html">db_env_set_func_read</a>,
<a href="../api_c/set_func_realloc.html">db_env_set_func_realloc</a>,
<a href="../api_c/set_func_seek.html">db_env_set_func_seek</a>,
<a href="../api_c/set_func_sleep.html">db_env_set_func_sleep</a>,
<a href="../api_c/set_func_unlink.html">db_env_set_func_unlink</a>,
<a href="../api_c/set_func_unmap.html">db_env_set_func_unmap</a>,
<a href="../api_c/set_func_write.html">db_env_set_func_write</a>
and
<a href="../api_c/set_func_yield.html">db_env_set_func_yield</a>.
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