lttng_event_context_u Union Reference

perf counter or application-specific context field descriptor. More...

#include <event.h>

Collaboration diagram for lttng_event_context_u:

Data Fields
struct {
char *   ctx_name
	Type name.
char *   provider_name
	Provider name.
}	app_ctx
	Application-specific context field descriptor.
struct lttng_event_perf_counter_ctx	perf_counter
	perf counter context field descriptor.

Detailed Description

perf counter or application-specific context field descriptor.

Field Documentation

[struct]

struct { ... } lttng_event_context_u::app_ctx

Application-specific context field descriptor.

Only used when the lttng_event_context::ctx member is LTTNG_EVENT_CONTEXT_APP_CONTEXT.

perf_counter

struct lttng_event_perf_counter_ctx lttng_event_context_u::perf_counter

perf counter context field descriptor.

Only used when the lttng_event_context::ctx member is LTTNG_EVENT_CONTEXT_PERF_CPU_COUNTER or LTTNG_EVENT_CONTEXT_PERF_THREAD_COUNTER.