Implement per-context filtering

[lttng-ust.git] / include / lttng / ust-events.h

diff --git a/include/lttng/ust-events.h b/include/lttng/ust-events.h
index 2b9603051975d480fd2e3687572149781c154e5a..c79bbed62174c920efcc0b891b94bb3479295cbe 100644 (file)
--- a/include/lttng/ust-events.h
+++ b/include/lttng/ust-events.h
@@ -205,6 +205,12 @@ struct lttng_event_field {
        char padding[LTTNG_UST_EVENT_FIELD_PADDING];
 };
 
+union lttng_ctx_value {
+       int64_t s64;
+       const char *str;
+       double d;
+};
+
 #define LTTNG_UST_CTX_FIELD_PADDING    40
 struct lttng_ctx_field {
        struct lttng_event_field event_field;
@@ -212,6 +218,8 @@ struct lttng_ctx_field {
        void (*record)(struct lttng_ctx_field *field,
                       struct lttng_ust_lib_ring_buffer_ctx *ctx,
                       struct lttng_channel *chan);
+       void (*get_value)(struct lttng_ctx_field *field,
+                        union lttng_ctx_value *value);
        union {
                char padding[LTTNG_UST_CTX_FIELD_PADDING];
        } u;
@@ -520,6 +528,7 @@ int lttng_fix_pending_event_desc(const struct lttng_event_desc *desc);
 int lttng_probes_init(void);
 void lttng_probes_exit(void);
 int lttng_find_context(struct lttng_ctx *ctx, const char *name);
+int lttng_get_context_index(struct lttng_ctx *ctx, const char *name);
 struct lttng_ctx_field *lttng_append_context(struct lttng_ctx **ctx_p);
 void lttng_remove_context_field(struct lttng_ctx **ctx_p,
                                struct lttng_ctx_field *field);