[lttng-dev] [Patch LTTng-tools 1/4] Add or update data structures to support CTF named metadata

[Geneviève Bastien]

The structures match the LTTng-UST structure for supporting named metadata
in general and CTF enumerations in particular.

Signed-off-by: Geneviève Bastien <gbastien+lttng at versatic.net>
---
 src/bin/lttng-sessiond/lttng-ust-ctl.h | 36 +++++++++++++++++++++++++++++++++-
 1 file changed, 35 insertions(+), 1 deletion(-)

diff --git a/src/bin/lttng-sessiond/lttng-ust-ctl.h b/src/bin/lttng-sessiond/lttng-ust-ctl.h
index 7f59b86..b5acd0f 100644
--- a/src/bin/lttng-sessiond/lttng-ust-ctl.h
+++ b/src/bin/lttng-sessiond/lttng-ust-ctl.h
@@ -274,13 +274,23 @@ struct ustctl_float_type {
 	char padding[USTCTL_UST_FLOAT_TYPE_PADDING];
 } LTTNG_PACKED;
 
-#define USTCTL_UST_BASIC_TYPE_PADDING	296
+#define USTCTL_UST_ENUM_ENTRY_PADDING	296
+struct ustctl_enum_entry {
+	unsigned long long start, end;	/* start and end are inclusive */
+	char string[LTTNG_UST_SYM_NAME_LEN];
+	char padding[USTCTL_UST_ENUM_ENTRY_PADDING];
+};
+
+#define USTCTL_UST_BASIC_TYPE_PADDING	40
 union _ustctl_basic_type {
 	struct ustctl_integer_type integer;
 	struct {
 		enum ustctl_string_encodings encoding;
 	} string;
 	struct ustctl_float_type _float;
+	struct {
+		char name[LTTNG_UST_SYM_NAME_LEN];
+	} enumeration;
 	char padding[USTCTL_UST_BASIC_TYPE_PADDING];
 } LTTNG_PACKED;
 
@@ -308,6 +318,30 @@ struct ustctl_type {
 	} u;
 } LTTNG_PACKED;
 
+#define USTCTL_UST_ENUM_TYPE_PADDING	296
+struct ustctl_enum {
+	char name[LTTNG_UST_SYM_NAME_LEN];
+	struct ustctl_integer_type container_type;
+	struct ustctl_enum_entry *entries;
+	unsigned int len;
+	char padding[USTCTL_UST_ENUM_TYPE_PADDING];
+} LTTNG_PACKED;
+
+/* CTF Metadata types for named metadata described outside event descriptions */
+enum ustctl_metadata_types {
+	ustctl_mtype_enum,
+	NR_USTCTL_METADATA_TYPES,
+};
+
+#define USTCTL_UST_NAMED_METADATA_PADDING 640
+struct ustctl_named_metadata {
+	enum ustctl_metadata_types mtype;
+	union {
+		struct ustctl_enum ctf_enum;
+		char padding[USTCTL_UST_NAMED_METADATA_PADDING];
+	} u;
+};
+
 #define USTCTL_UST_FIELD_PADDING	28
 struct ustctl_field {
 	char name[LTTNG_UST_SYM_NAME_LEN];
-- 
1.8.5.3