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 
13 extern int trace_events_enabled_count;
14 
15 
trace_event_is_pattern(const char * str)16 static inline bool trace_event_is_pattern(const char *str)
17 {
18     assert(str != NULL);
19     return strchr(str, '*') != NULL;
20 }
21 
trace_event_get_id(TraceEvent * ev)22 static inline uint32_t trace_event_get_id(TraceEvent *ev)
23 {
24     assert(ev != NULL);
25     return ev->id;
26 }
27 
trace_event_get_vcpu_id(TraceEvent * ev)28 static inline uint32_t trace_event_get_vcpu_id(TraceEvent *ev)
29 {
30     return ev->vcpu_id;
31 }
32 
trace_event_is_vcpu(TraceEvent * ev)33 static inline bool trace_event_is_vcpu(TraceEvent *ev)
34 {
35     return ev->vcpu_id != TRACE_VCPU_EVENT_NONE;
36 }
37 
trace_event_get_name(TraceEvent * ev)38 static inline const char * trace_event_get_name(TraceEvent *ev)
39 {
40     assert(ev != NULL);
41     return ev->name;
42 }
43 
trace_event_get_state_static(TraceEvent * ev)44 static 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 
trace_event_get_state_dynamic(TraceEvent * ev)54 static inline bool trace_event_get_state_dynamic(TraceEvent *ev)
55 {
56     return unlikely(trace_events_enabled_count) && *ev->dstate;
57 }
58 
59 void trace_event_register_group(TraceEvent **events);
60 
61 #endif /* TRACE__CONTROL_INTERNAL_H */
62