From: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Date: Mon, 10 Jan 2022 19:48:59 +0000 (-0500)
Subject: Trace hit counters: introduce counter private data structures
X-Git-Url: http://git.lttng.org./?a=commitdiff_plain;h=5a56009fd3f265d40e743422bc0a02fd22508f64;p=lttng-modules.git

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 a727230f..59fc015f 100644
--- 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;