trace/control-internal.h

   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
  16 static inline bool trace_event_is_pattern(const char *str)
  17 {
  18     assert(str != NULL);
  19     return strchr(str, '*') != NULL;
  20 }
  21
  22 static inline uint32_t trace_event_get_id(TraceEvent *ev)
  23 {
  24     assert(ev != NULL);
  25     return ev->id;
  26 }
  27
  28 static inline uint32_t trace_event_get_vcpu_id(TraceEvent *ev)
  29 {
  30     return ev->vcpu_id;
  31 }
  32
  33 static inline bool trace_event_is_vcpu(TraceEvent *ev)
  34 {
  35     return ev->vcpu_id != TRACE_VCPU_EVENT_NONE;
  36 }
  37
  38 static inline const char * trace_event_get_name(TraceEvent *ev)
  39 {
  40     assert(ev != NULL);
  41     return ev->name;
  42 }
  43
  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
  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 */