-#define LTTNG_UST_CTX_FIELD_PADDING 40
-struct lttng_ctx_field {
- struct lttng_ust_event_field event_field;
- size_t (*get_size)(struct lttng_ctx_field *field, size_t offset);
- 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,
- struct lttng_ctx_value *value);
- union {
- struct lttng_perf_counter_field *perf_counter;
- char padding[LTTNG_UST_CTX_FIELD_PADDING];
- } u;
- void (*destroy)(struct lttng_ctx_field *field);
- char *field_name; /* Has ownership, dynamically allocated. */
-};