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 #include "qom/cpu.h" 14 15 16 extern int trace_events_enabled_count; 17 18 19 static inline bool trace_event_is_pattern(const char *str) 20 { 21 assert(str != NULL); 22 return strchr(str, '*') != NULL; 23 } 24 25 static inline uint32_t trace_event_get_id(TraceEvent *ev) 26 { 27 assert(ev != NULL); 28 return ev->id; 29 } 30 31 static inline uint32_t trace_event_get_vcpu_id(TraceEvent *ev) 32 { 33 return ev->vcpu_id; 34 } 35 36 static inline bool trace_event_is_vcpu(TraceEvent *ev) 37 { 38 return ev->vcpu_id != TRACE_VCPU_EVENT_NONE; 39 } 40 41 static inline const char * trace_event_get_name(TraceEvent *ev) 42 { 43 assert(ev != NULL); 44 return ev->name; 45 } 46 47 static inline bool trace_event_get_state_static(TraceEvent *ev) 48 { 49 assert(ev != NULL); 50 return ev->sstate; 51 } 52 53 /* it's on fast path, avoid consistency checks (asserts) */ 54 #define trace_event_get_state_dynamic_by_id(id) \ 55 (unlikely(trace_events_enabled_count) && _ ## id ## _DSTATE) 56 57 static inline bool trace_event_get_state_dynamic(TraceEvent *ev) 58 { 59 return unlikely(trace_events_enabled_count) && *ev->dstate; 60 } 61 62 static inline bool 63 trace_event_get_vcpu_state_dynamic_by_vcpu_id(CPUState *vcpu, 64 uint32_t vcpu_id) 65 { 66 /* it's on fast path, avoid consistency checks (asserts) */ 67 if (unlikely(trace_events_enabled_count)) { 68 return test_bit(vcpu_id, vcpu->trace_dstate); 69 } else { 70 return false; 71 } 72 } 73 74 static inline bool trace_event_get_vcpu_state_dynamic(CPUState *vcpu, 75 TraceEvent *ev) 76 { 77 uint32_t vcpu_id; 78 assert(trace_event_is_vcpu(ev)); 79 vcpu_id = trace_event_get_vcpu_id(ev); 80 return trace_event_get_vcpu_state_dynamic_by_vcpu_id(vcpu, vcpu_id); 81 } 82 83 84 void trace_event_register_group(TraceEvent **events); 85 86 #endif /* TRACE__CONTROL_INTERNAL_H */ 87