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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Wayland may have interface bug when multi-threads programing."
   href="https://bugs.freedesktop.org/show_bug.cgi?id=91750">91750</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Wayland may have interface bug when multi-threads programing.
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Wayland
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>unspecified
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>critical
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>wayland
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>wayland-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>syjman@gmail.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=117908" name="attach_117908" title="wayland multi-threads interface bug">attachment 117908</a> <a href="attachment.cgi?id=117908&action=edit" title="wayland multi-threads interface bug">[details]</a></span>
wayland multi-threads interface bug

Wayland may have interface bug when multi-threads programming.
This is a very serious bug in every version of wayland. 
It only occurs when multi-threaded programming,but it may cause an "S" level
Error(screen freeze or program crash).
Briefly,a wl_proxy's property is still being modifying in a thread,while
another thread may have sent it to server.Namely,Any modification of a
generated callback wl_proxy may be ineffective,as other thread may have read
and dispatched its corresponding events.
I have a detailed description of the problem and my solution in the attachment.
Please refer the attachment for detail.
If you have any question with the bug,pls feel free to contact me.
<a href="mailto:syjman@gmail.com">syjman@gmail.com</a></pre>
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