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 TraceEvent trace_events[]; 14 extern bool trace_events_dstate[]; 15 extern int trace_events_enabled_count; 16 17 18 static inline TraceEventID trace_event_count(void) 19 { 20 return TRACE_EVENT_COUNT; 21 } 22 23 static inline TraceEvent *trace_event_id(TraceEventID id) 24 { 25 assert(id < trace_event_count()); 26 return &trace_events[id]; 27 } 28 29 static inline bool trace_event_is_pattern(const char *str) 30 { 31 assert(str != NULL); 32 return strchr(str, '*') != NULL; 33 } 34 35 static inline TraceEventID trace_event_get_id(TraceEvent *ev) 36 { 37 assert(ev != NULL); 38 return ev->id; 39 } 40 41 static inline TraceEventVCPUID trace_event_get_vcpu_id(TraceEvent *ev) 42 { 43 return ev->vcpu_id; 44 } 45 46 static inline bool trace_event_is_vcpu(TraceEvent *ev) 47 { 48 return ev->vcpu_id != TRACE_VCPU_EVENT_COUNT; 49 } 50 51 static inline const char * trace_event_get_name(TraceEvent *ev) 52 { 53 assert(ev != NULL); 54 return ev->name; 55 } 56 57 static inline bool trace_event_get_state_static(TraceEvent *ev) 58 { 59 assert(ev != NULL); 60 return ev->sstate; 61 } 62 63 static inline bool trace_event_get_state_dynamic_by_id(int id) 64 { 65 return unlikely(trace_events_enabled_count) && trace_events_dstate[id]; 66 } 67 68 static inline bool trace_event_get_state_dynamic(TraceEvent *ev) 69 { 70 int id = trace_event_get_id(ev); 71 return trace_event_get_state_dynamic_by_id(id); 72 } 73 74 static inline void trace_event_set_state_dynamic(TraceEvent *ev, bool state) 75 { 76 int id = trace_event_get_id(ev); 77 assert(ev != NULL); 78 assert(trace_event_get_state_static(ev)); 79 trace_events_enabled_count += state - trace_events_dstate[id]; 80 trace_events_dstate[id] = state; 81 } 82 83 #endif /* TRACE__CONTROL_INTERNAL_H */ 84