Trace hit counters: introduce counter private data structures

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Change-Id: Ie6adadcbab8c41237b2bfb03b1c341b4183715cc

diff --git a/include/lttng/events-internal.h b/include/lttng/events-internal.h
index a727230ffffb8c21320b04b502e98ff4755987d1..59fc015f62f76c8925998764b3aa3878ccfb1e57 100644 (file)
--- a/include/lttng/events-internal.h
+++ b/include/lttng/events-internal.h
@@ -197,6 +197,39 @@ enum lttng_kernel_event_enabler_type {
        LTTNG_EVENT_ENABLER_TYPE_NOTIFIER,
 };
 
+enum lttng_key_token_type {
+       LTTNG_KEY_TOKEN_STRING = 0,
+       LTTNG_KEY_TOKEN_EVENT_NAME = 1,
+};
+
+#define LTTNG_KEY_TOKEN_STRING_LEN_MAX LTTNG_KERNEL_ABI_KEY_TOKEN_STRING_LEN_MAX
+struct lttng_key_token {
+       enum lttng_key_token_type type;
+       union {
+               char string[LTTNG_KEY_TOKEN_STRING_LEN_MAX];
+       } arg;
+};
+
+#define LTTNG_NR_KEY_TOKEN LTTNG_KERNEL_ABI_NR_KEY_TOKEN
+struct lttng_counter_key_dimension {
+       size_t nr_key_tokens;
+       struct lttng_key_token key_tokens[LTTNG_NR_KEY_TOKEN];
+};
+
+#define LTTNG_COUNTER_DIMENSION_MAX LTTNG_KERNEL_ABI_COUNTER_DIMENSION_MAX
+struct lttng_counter_key {
+       size_t nr_dimensions;
+       struct lttng_counter_key_dimension key_dimensions[LTTNG_COUNTER_DIMENSION_MAX];
+};
+
+struct lttng_counter_dimension {
+       uint64_t size;
+       uint64_t underflow_index;
+       uint64_t overflow_index;
+       uint8_t has_underflow;
+       uint8_t has_overflow;
+};
+
 struct lttng_kernel_bytecode_node {
        enum lttng_kernel_bytecode_type type;
        struct list_head node;