X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=include%2Flttng%2Fchannel.h;h=732074c3ae99d8c137483cd792e62e4dbafd2da4;hp=6ab0c7b62a5a0a5bd4ad867b91ce0996f42ef27b;hb=8d5841ea483139d3ab2f2b4dd39263dad63832b1;hpb=1239a312e7e0e4c33948fdaf04e7637cb93c8b10

diff --git a/include/lttng/channel.h b/include/lttng/channel.h
index 6ab0c7b62..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" {
@@ -32,8 +33,8 @@ extern "C" {
  */
 #define LTTNG_CHANNEL_ATTR_PADDING1        LTTNG_SYMBOL_NAME_LEN + 12
 struct lttng_channel_attr {
-	int overwrite;                      /* 1: overwrite, 0: discard */
-	uint64_t subbuf_size;               /* bytes */
+	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 */
 	unsigned int read_timer_interval;   /* usec */
@@ -43,6 +44,12 @@ struct lttng_channel_attr {
 	uint64_t tracefile_count;           /* number of tracefiles */
 	/* LTTng 2.3 padding limit */
 	unsigned int live_timer_interval;   /* usec */
+	/* LTTng 2.7 padding limit */
+	uint32_t align_to_64;
+	union {
+		uint64_t padding;
+		void *ptr;
+	} extended;
 
 	char padding[LTTNG_CHANNEL_ATTR_PADDING1];
 };
@@ -101,6 +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