1 /* 2 * Interface for configuring and controlling the state of tracing events. 3 * 4 * Copyright (C) 2011-2014 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 #include <string.h> 14 15 16 extern TraceEvent trace_events[]; 17 extern int trace_events_enabled_count; 18 19 20 static inline TraceEventID trace_event_count(void) 21 { 22 return TRACE_EVENT_COUNT; 23 } 24 25 static inline TraceEvent *trace_event_id(TraceEventID id) 26 { 27 assert(id < trace_event_count()); 28 return &trace_events[id]; 29 } 30 31 static inline bool trace_event_is_pattern(const char *str) 32 { 33 assert(str != NULL); 34 return strchr(str, '*') != NULL; 35 } 36 37 static inline TraceEventID trace_event_get_id(TraceEvent *ev) 38 { 39 assert(ev != NULL); 40 return ev->id; 41 } 42 43 static inline const char * trace_event_get_name(TraceEvent *ev) 44 { 45 assert(ev != NULL); 46 return ev->name; 47 } 48 49 static inline bool trace_event_get_state_static(TraceEvent *ev) 50 { 51 assert(ev != NULL); 52 return ev->sstate; 53 } 54 55 static inline bool trace_event_get_state_dynamic(TraceEvent *ev) 56 { 57 assert(ev != NULL); 58 return unlikely(trace_events_enabled_count) && ev->dstate; 59 } 60 61 static inline void trace_event_set_state_dynamic(TraceEvent *ev, bool state) 62 { 63 assert(ev != NULL); 64 assert(trace_event_get_state_static(ev)); 65 trace_events_enabled_count += state - ev->dstate; 66 ev->dstate = state; 67 } 68 69 #endif /* TRACE__CONTROL_INTERNAL_H */ 70