X-Git-Url: https://git.lttng.org/?a=blobdiff_plain;f=include%2Flttng%2Fchannel.h;h=732074c3ae99d8c137483cd792e62e4dbafd2da4;hb=8d5841ea483139d3ab2f2b4dd39263dad63832b1;hp=e770f6835a491f35c3dbdea7b4705ad65afefbdc;hpb=674871507faa4b2f4468d0b67fa35e77e4a2744a;p=lttng-tools.git

diff --git a/include/lttng/channel.h b/include/lttng/channel.h
index e770f6835..732074c3a 100644
--- a/include/lttng/channel.h
+++ b/include/lttng/channel.h
@@ -20,6 +20,7 @@
 
 #include <lttng/domain.h>
 #include <lttng/event.h>
+#include <stdint.h>
 
 #ifdef __cplusplus
 extern "C" {
@@ -32,7 +33,7 @@ extern "C" {
  */
 #define LTTNG_CHANNEL_ATTR_PADDING1        LTTNG_SYMBOL_NAME_LEN + 12
 struct lttng_channel_attr {
-	int overwrite;                      /* 1: overwrite, 0: discard */
+	int overwrite;                      /* -1: session default, 1: overwrite, 0: discard */
 	uint64_t subbuf_size;               /* bytes, power of 2 */
 	uint64_t num_subbuf;                /* power of 2 */
 	unsigned int switch_timer_interval; /* usec */
@@ -107,6 +108,22 @@ extern int lttng_disable_channel(struct lttng_handle *handle,
 extern void lttng_channel_set_default_attr(struct lttng_domain *domain,
 		struct lttng_channel_attr *attr);
 
+/*
+ * Get the discarded event count of a specific LTTng channel.
+ *
+ * Returns 0 on success, or a negative LTTng error code on error.
+ */
+extern int lttng_channel_get_discarded_event_count(struct lttng_channel *chan,
+		uint64_t *discarded_events);
+
+/*
+ * Get the lost packet count of a specific LTTng channel.
+ *
+ * Returns 0 on success, or a negative LTTng error code on error.
+ */
+extern int lttng_channel_get_lost_packet_count(struct lttng_channel *chan,
+		uint64_t *lost_packets);
+
 #ifdef __cplusplus
 }
 #endif