asterisk/third-party/pjproject/patches/0001-evsub-Add-APIs-to-add-decrement-an-event-subscriptio.patch

From a5030c9b33b2c936879fbacb1d2ea5edc2979181 Mon Sep 17 00:00:00 2001
From: George Joseph <gjoseph@digium.com>
Date: Sat, 18 Jun 2016 10:14:34 -0600
Subject: [PATCH] evsub:  Add APIs to add/decrement an event  subscription's
 group lock

These APIs can be used to ensure that the evsub isn't destroyed before
an application is finished using it.
---
 pjsip/include/pjsip-simple/evsub.h | 20 ++++++++++++++++++++
 pjsip/src/pjsip-simple/evsub.c     | 14 ++++++++++++++
 2 files changed, 34 insertions(+)

diff --git a/pjsip/include/pjsip-simple/evsub.h b/pjsip/include/pjsip-simple/evsub.h
index 2dc4d69..31f85f8 100644
--- a/pjsip/include/pjsip-simple/evsub.h
+++ b/pjsip/include/pjsip-simple/evsub.h
@@ -490,6 +490,26 @@ PJ_DECL(void) pjsip_evsub_set_mod_data( pjsip_evsub *sub, unsigned mod_id,
 PJ_DECL(void*) pjsip_evsub_get_mod_data( pjsip_evsub *sub, unsigned mod_id );
 
 
+/**
+ * Increment the event subscription's group lock.
+ *
+ * @param sub		The server subscription instance.
+ *
+ * @return		PJ_SUCCESS on success.
+ */
+PJ_DEF(pj_status_t) pjsip_evsub_add_ref(pjsip_evsub *sub);
+
+
+/**
+ * Decrement the event subscription's group lock.
+ *
+ * @param sub		The server subscription instance.
+ *
+ * @return		PJ_SUCCESS on success.
+ */
+PJ_DEF(pj_status_t) pjsip_evsub_dec_ref(pjsip_evsub *sub);
+
+
 
 PJ_END_DECL
 
diff --git a/pjsip/src/pjsip-simple/evsub.c b/pjsip/src/pjsip-simple/evsub.c
index 7cd8859..68a9564 100644
--- a/pjsip/src/pjsip-simple/evsub.c
+++ b/pjsip/src/pjsip-simple/evsub.c
@@ -831,7 +831,21 @@ static pj_status_t evsub_create( pjsip_dialog *dlg,
     return PJ_SUCCESS;
 }
 
+/*
+ * Increment the event subscription's group lock.
+ */
+PJ_DEF(pj_status_t) pjsip_evsub_add_ref(pjsip_evsub *sub)
+{
+    return pj_grp_lock_add_ref(sub->grp_lock);
+}
 
+/*
+ * Decrement the event subscription's group lock.
+ */
+PJ_DEF(pj_status_t) pjsip_evsub_dec_ref(pjsip_evsub *sub)
+{
+    return pj_grp_lock_dec_ref(sub->grp_lock);
+}
 
 /*
  * Create client subscription session.
-- 
2.5.5