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<td style="vertical-align: top;; padding: 0px; border-collapse: collapse; padding-right: 5px; font-size: 20px; line-height: 30px; mso-line-height-rule: exactly" class="page-title-pattern-header-container"> <span class="page-title-pattern-header" style="font-family: Arial, sans-serif; padding: 0; font-size: 20px; line-height: 30px; mso-text-raise: 2px; mso-line-height-rule: exactly; vertical-align: middle"> <a href="https://issues.shibboleth.net/jira/browse/CPPXT-116" style="color: #3b73af; text-decoration: none">Re: Apache 2.4 / Shibboleth Deadlock</a> </span>
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<p style="margin: 10px 0 0 0">I can buy that (sort of), I would have expected to see the SP on the apache stack twice, particulatly given RAII, but its not a given. If you summoned up a ShibTargetApache and came back with the lock for Read, then a later one grabbing is for write will die (since lock deadlock).</p>
<p style="margin: 10px 0 0 0">OTOH, I have yet to meet a locking paradigm that didn't allow you to grab a lock for read once you already own it for read (for write). Its other threads that cannot grab the lock for read if you have it for read (and if someone else is queueing for write)</p>
<p style="margin: 10px 0 0 0">So I buy where this comes from. I'll review the patch for my edification and apply it if you wish</p>
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