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<TITLE>C API Reference -- Ns_WriteLockRWLock</TITLE>
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<a name="427997">
</a><h3>Ns_WriteLockRWLock</h3>
<a name="427998">
</a><h4>Overview</h4>
Acquire a write lock
<a name="427999">
</a><a name="428000">
</a><h4>Syntax</h4>
<pre> <a name="428001"></a>int Ns_WriteLockRWLock(
<a name="428002"></a>Ns_RWLock *lock
<a name="428003"></a>);
</pre><p><a name="428004">
</a><h4>Description</h4>
<p><a name="428068">
</a>Ns_WriteLockRWLock acquires a write lock. Only one write lock can be in effect. If there are pending read locks active, the write lock acquisition blocks until all of the read locks drain. If a subsequent read lock acquisition attempt is made, the write lock has priority.</p>
<p><a name="428006">
</a>For general information about read/write locks and an example showing the use of the read/write lock functions, see the Ns_InitializeRWLock function.</p>
<p><a name="781285">
</a>Ns_RWLockWrLock is the preferred function for acquiring a write lock.</p>
<a name="428007">
</a><h4>See Also</h4>
<p><a name="428008">
</a>Ns_InitializeRWLock</p>
<p><a name="428009">
</a>Ns_DestroyRWLock</p>
<p><a name="428010">
</a>Ns_ReadLockRWLock</p>
<p><a name="428011">
</a>Ns_ReadUnlockRWLock</p>
<p><a name="428012">
</a>Ns_WriteUnlockRWLock</p>
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