E.17 Thread List Format

To efficiently update the list of threads and their attributes, gdb issues the `qXfer:threads:read' packet (see qXfer threads read) and obtains the XML document with the following structure:

     <?xml version="1.0"?>
     <threads>
         <thread id="id" core="0">
         ... description ...
         </thread>
     </threads>

Each `thread' element must have the `id' attribute that identifies the thread (see thread-id syntax). The `core' attribute, if present, specifies which processor core the thread was last executing on. The content of the of `thread' element is interpreted as human-readable auxilliary information.