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 <stddef.h> /* size_t */ 14 15 #include "qom/cpu.h" 16 17 18 extern int trace_events_enabled_count; 19 20 21 static inline bool trace_event_is_pattern(const char *str) 22 { 23 assert(str != NULL); 24 return strchr(str, '*') != NULL; 25 } 26 27 static inline uint32_t trace_event_get_id(TraceEvent *ev) 28 { 29 assert(ev != NULL); 30 return ev->id; 31 } 32 33 static inline uint32_t trace_event_get_vcpu_id(TraceEvent *ev) 34 { 35 return ev->vcpu_id; 36 } 37 38 static inline bool trace_event_is_vcpu(TraceEvent *ev) 39 { 40 return ev->vcpu_id != TRACE_VCPU_EVENT_NONE; 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 /* it's on fast path, avoid consistency checks (asserts) */ 56 #define trace_event_get_state_dynamic_by_id(id) \ 57 (unlikely(trace_events_enabled_count) && _ ## id ## _DSTATE) 58 59 static inline bool trace_event_get_state_dynamic(TraceEvent *ev) 60 { 61 return unlikely(trace_events_enabled_count) && *ev->dstate; 62 } 63 64 static inline bool 65 trace_event_get_vcpu_state_dynamic_by_vcpu_id(CPUState *vcpu, 66 uint32_t vcpu_id) 67 { 68 /* it's on fast path, avoid consistency checks (asserts) */ 69 if (unlikely(trace_events_enabled_count)) { 70 return test_bit(vcpu_id, vcpu->trace_dstate); 71 } else { 72 return false; 73 } 74 } 75 76 static inline bool trace_event_get_vcpu_state_dynamic(CPUState *vcpu, 77 TraceEvent *ev) 78 { 79 uint32_t vcpu_id; 80 assert(trace_event_is_vcpu(ev)); 81 vcpu_id = trace_event_get_vcpu_id(ev); 82 return trace_event_get_vcpu_state_dynamic_by_vcpu_id(vcpu, vcpu_id); 83 } 84 85 86 void trace_event_register_group(TraceEvent **events); 87 88 #endif /* TRACE__CONTROL_INTERNAL_H */ 89