Re #1466: Moved down the atexit callbacks execution in pjmedia & pjsip endpoints to the very end of endpoint destroy sequence.

git-svn-id: http://svn.pjsip.org/repos/pjproject/branches/1.x@3988 74dad513-b988-da41-8d7b-12977e46ad98

4 files changed, 23 insertions, 16 deletions

diff --git a/pjmedia/include/pjmedia/endpoint.h b/pjmedia/include/pjmedia/endpoint.h
index 2455bcea..108dee62 100644
--- a/pjmedia/include/pjmedia/endpoint.h
+++ b/pjmedia/include/pjmedia/endpoint.h
@@ -212,7 +212,10 @@ PJ_DECL(pj_status_t) pjmedia_endpt_dump(pjmedia_endpt *endpt);
 
 /**
  * Register cleanup function to be called by media endpoint when 
- * #pjmedia_endpt_destroy() is called.
+ * #pjmedia_endpt_destroy() is called. Note that application should not
+ * use or access any endpoint resource (such as pool, ioqueue) from within
+ * the callback as such resource may have been released when the callback
+ * function is invoked.
  *
  * @param endpt		The media endpoint.
  * @param func		The function to be registered.
diff --git a/pjmedia/src/pjmedia/endpoint.c b/pjmedia/src/pjmedia/endpoint.c
index 43ed4ccf..bf9d3c91 100644
--- a/pjmedia/src/pjmedia/endpoint.c
+++ b/pjmedia/src/pjmedia/endpoint.c
@@ -219,13 +219,6 @@ PJ_DEF(pj_status_t) pjmedia_endpt_destroy (pjmedia_endpt *endpt)
 	}
     }
 
-    /* Call all registered exit callbacks */
-    ecb = endpt->exit_cb_list.next;
-    while (ecb != &endpt->exit_cb_list) {
-	(*ecb->func)(endpt);
-	ecb = ecb->next;
-    }
-
     /* Destroy internal ioqueue */
     if (endpt->ioqueue && endpt->own_ioqueue) {
 	pj_ioqueue_destroy(endpt->ioqueue);
@@ -236,6 +229,14 @@ PJ_DEF(pj_status_t) pjmedia_endpt_destroy (pjmedia_endpt *endpt)
 
     pjmedia_codec_mgr_destroy(&endpt->codec_mgr);
     pjmedia_aud_subsys_shutdown();
+
+    /* Call all registered exit callbacks */
+    ecb = endpt->exit_cb_list.next;
+    while (ecb != &endpt->exit_cb_list) {
+	(*ecb->func)(endpt);
+	ecb = ecb->next;
+    }
+
     pj_pool_release (endpt->pool);
 
     return PJ_SUCCESS;
diff --git a/pjsip/include/pjsip/sip_endpoint.h b/pjsip/include/pjsip/sip_endpoint.h
index bc652e60..c6cf6d65 100644
--- a/pjsip/include/pjsip/sip_endpoint.h
+++ b/pjsip/include/pjsip/sip_endpoint.h
@@ -520,7 +520,10 @@ PJ_DECL(void) pjsip_endpt_dump( pjsip_endpoint *endpt, pj_bool_t detail );
 
 /**
  * Register cleanup function to be called by SIP endpoint when 
- * #pjsip_endpt_destroy() is called.
+ * #pjsip_endpt_destroy() is called.  Note that application should not
+ * use or access any endpoint resource (such as pool, ioqueue, timer heap)
+ * from within the callback as such resource may have been released when
+ * the callback function is invoked.
  *
  * @param endpt		The SIP endpoint.
  * @param func		The function to be registered.
diff --git a/pjsip/src/pjsip/sip_endpoint.c b/pjsip/src/pjsip/sip_endpoint.c
index 0125ae39..2831ea7d 100644
--- a/pjsip/src/pjsip/sip_endpoint.c
+++ b/pjsip/src/pjsip/sip_endpoint.c
@@ -578,13 +578,6 @@ PJ_DEF(void) pjsip_endpt_destroy(pjsip_endpoint *endpt)
 
     PJ_LOG(5, (THIS_FILE, "Destroying endpoing instance.."));
 
-    /* Call all registered exit callbacks */
-    ecb = endpt->exit_cb_list.next;
-    while (ecb != &endpt->exit_cb_list) {
-	(*ecb->func)(endpt);
-	ecb = ecb->next;
-    }
-
     /* Phase 1: stop all modules */
     mod = endpt->module_list.prev;
     while (mod != &endpt->module_list) {
@@ -615,6 +608,13 @@ PJ_DEF(void) pjsip_endpt_destroy(pjsip_endpoint *endpt)
     /* Destroy timer heap */
     pj_timer_heap_destroy(endpt->timer_heap);
 
+    /* Call all registered exit callbacks */
+    ecb = endpt->exit_cb_list.next;
+    while (ecb != &endpt->exit_cb_list) {
+	(*ecb->func)(endpt);
+	ecb = ecb->next;
+    }
+
     /* Delete endpoint mutex. */
     pj_mutex_destroy(endpt->mutex);