1/*
2 * Interface for configuring and controlling the state of tracing events.
3 *
4 * Copyright (C) 2011-2016 Lluís Vilanova <vilanova@ac.upc.edu>
5 *
6 * This work is licensed under the terms of the GNU GPL, version 2 or later.
7 * See the COPYING file in the top-level directory.
8 */
9
10#ifndef TRACE__CONTROL_INTERNAL_H
11#define TRACE__CONTROL_INTERNAL_H
12
13extern int trace_events_enabled_count;
14
15
16static inline bool trace_event_is_pattern(const char *str)
17{
18 assert(str != NULL);
19 return strchr(str, '*') != NULL;
20}
21
22static inline uint32_t trace_event_get_id(TraceEvent *ev)
23{
24 assert(ev != NULL);
25 return ev->id;
26}
27
28static inline uint32_t trace_event_get_vcpu_id(TraceEvent *ev)
29{
30 return ev->vcpu_id;
31}
32
33static inline bool trace_event_is_vcpu(TraceEvent *ev)
34{
35 return ev->vcpu_id != TRACE_VCPU_EVENT_NONE;
36}
37
38static inline const char * trace_event_get_name(TraceEvent *ev)
39{
40 assert(ev != NULL);
41 return ev->name;
42}
43
44static inline bool trace_event_get_state_static(TraceEvent *ev)
45{
46 assert(ev != NULL);
47 return ev->sstate;
48}
49
50/* it's on fast path, avoid consistency checks (asserts) */
51#define trace_event_get_state_dynamic_by_id(id) \
52 (unlikely(trace_events_enabled_count) && _ ## id ## _DSTATE)
53
54static inline bool trace_event_get_state_dynamic(TraceEvent *ev)
55{
56 return unlikely(trace_events_enabled_count) && *ev->dstate;
57}
58
59void trace_event_register_group(TraceEvent **events);
60
61#endif /* TRACE__CONTROL_INTERNAL_H */
62