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 bool trace_events_dstate[]; 18 extern int trace_events_enabled_count; 19 20 21 static inline TraceEventID trace_event_count(void) 22 { 23 return TRACE_EVENT_COUNT; 24 } 25 26 static inline TraceEvent *trace_event_id(TraceEventID id) 27 { 28 assert(id < trace_event_count()); 29 return &trace_events[id]; 30 } 31 32 static inline bool trace_event_is_pattern(const char *str) 33 { 34 assert(str != NULL); 35 return strchr(str, '*') != NULL; 36 } 37 38 static inline TraceEventID trace_event_get_id(TraceEvent *ev) 39 { 40 assert(ev != NULL); 41 return ev->id; 42 } 43 44 static inline const char * trace_event_get_name(TraceEvent *ev) 45 { 46 assert(ev != NULL); 47 return ev->name; 48 } 49 50 static inline bool trace_event_get_state_static(TraceEvent *ev) 51 { 52 assert(ev != NULL); 53 return ev->sstate; 54 } 55 56 static inline bool trace_event_get_state_dynamic_by_id(int id) 57 { 58 return unlikely(trace_events_enabled_count) && trace_events_dstate[id]; 59 } 60 61 static inline bool trace_event_get_state_dynamic(TraceEvent *ev) 62 { 63 int id = trace_event_get_id(ev); 64 return trace_event_get_state_dynamic_by_id(id); 65 } 66 67 static inline void trace_event_set_state_dynamic(TraceEvent *ev, bool state) 68 { 69 int id = trace_event_get_id(ev); 70 assert(ev != NULL); 71 assert(trace_event_get_state_static(ev)); 72 trace_events_enabled_count += state - trace_events_dstate[id]; 73 trace_events_dstate[id] = state; 74 } 75 76 #endif /* TRACE__CONTROL_INTERNAL_H */ 77