X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=src%2Fbin%2Flttng-sessiond%2Fsave.c;h=c6fc33e7bb83c5b02b6fdc7c4c8b38517d5f9aea;hb=c4b884061bd2f095631a115c70d33d13fb1e6fb6;hp=aae56a8954a081d11508fa8a02f6dc081b7aafb5;hpb=0e1155633b00241b8b1e5a9bb683cf91b28f5eeb;p=lttng-tools.git

diff --git a/src/bin/lttng-sessiond/save.c b/src/bin/lttng-sessiond/save.c
index aae56a895..c6fc33e7b 100644
--- a/src/bin/lttng-sessiond/save.c
+++ b/src/bin/lttng-sessiond/save.c
@@ -16,6 +16,7 @@
  */
 
 #define _GNU_SOURCE
+#define _LGPL_SOURCE
 #include <assert.h>
 #include <inttypes.h>
 #include <string.h>
@@ -1224,6 +1225,8 @@ int save_domains(struct config_writer *writer, struct ltt_session *session)
 	}
 
 	if (session->ust_session) {
+		unsigned long agent_count;
+
 		ret = config_writer_open_element(writer,
 			config_element_domain);
 		if (ret) {
@@ -1242,30 +1245,37 @@ int save_domains(struct config_writer *writer, struct ltt_session *session)
 			ret = LTTNG_ERR_SAVE_IO_FAIL;
 			goto end;
 		}
-	}
 
-	if (session->ust_session &&
-			lttng_ht_get_count(session->ust_session->agents) > 0) {
-		ret = config_writer_open_element(writer,
-			config_element_domain);
-		if (ret) {
-			ret = LTTNG_ERR_SAVE_IO_FAIL;
-			goto end;
-		}
+		rcu_read_lock();
+		agent_count =
+			lttng_ht_get_count(session->ust_session->agents);
+		rcu_read_unlock();
 
-		ret = save_ust_session(writer, session, 1);
-		if (ret) {
-			goto end;
-		}
+		if (agent_count > 0) {
+			ret = config_writer_open_element(writer,
+				config_element_domain);
+			if (ret) {
+				ret = LTTNG_ERR_SAVE_IO_FAIL;
+				goto end;
+			}
 
-		/* /domain */
-		ret = config_writer_close_element(writer);
-		if (ret) {
-			ret = LTTNG_ERR_SAVE_IO_FAIL;
-			goto end;
+			ret = save_ust_session(writer, session, 1);
+			if (ret) {
+				goto end;
+			}
+
+			/* /domain */
+			ret = config_writer_close_element(writer);
+			if (ret) {
+				ret = LTTNG_ERR_SAVE_IO_FAIL;
+				goto end;
+			}
 		}
 	}
 
+	if (session->ust_session) {
+	}
+
 	/* /domains */
 	ret = config_writer_close_element(writer);
 	if (ret) {