+static void c_ithread_destroy (c_ithread_t *ithread)
+{
+ dTHXa (ithread->interp);
+
+ assert (NULL != perl_threads);
+
+ PERL_SET_CONTEXT (aTHX);
+ log_debug ("Shutting down Perl interpreter %p...", aTHX);
+
+#if COLLECT_DEBUG
+ sv_report_used ();
+
+ --perl_threads->number_of_threads;
+#endif /* COLLECT_DEBUG */
+
+ perl_destruct (aTHX);
+ perl_free (aTHX);
+
+ if (NULL == ithread->prev)
+ perl_threads->head = ithread->next;
+ else
+ ithread->prev->next = ithread->next;
+
+ if (NULL == ithread->next)
+ perl_threads->tail = ithread->prev;
+ else
+ ithread->next->prev = ithread->prev;
+
+ sfree (ithread);
+ return;
+} /* static void c_ithread_destroy (c_ithread_t *) */
+
+static void c_ithread_destructor (void *arg)
+{
+ c_ithread_t *ithread = (c_ithread_t *)arg;
+ c_ithread_t *t = NULL;
+
+ if (NULL == perl_threads)
+ return;
+
+ pthread_mutex_lock (&perl_threads->mutex);
+
+ for (t = perl_threads->head; NULL != t; t = t->next)
+ if (t == ithread)
+ break;
+
+ /* the ithread no longer exists */
+ if (NULL == t)
+ return;
+
+ c_ithread_destroy (ithread);
+
+ pthread_mutex_unlock (&perl_threads->mutex);
+ return;
+} /* static void c_ithread_destructor (void *) */
+
+/* must be called with perl_threads->mutex locked */