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 TraceEvent *trace_events[]; 19 extern int trace_events_enabled_count; 20 21 22 static inline bool trace_event_is_pattern(const char *str) 23 { 24 assert(str != NULL); 25 return strchr(str, '*') != NULL; 26 } 27 28 static inline uint32_t trace_event_get_id(TraceEvent *ev) 29 { 30 assert(ev != NULL); 31 return ev->id; 32 } 33 34 static inline uint32_t trace_event_get_vcpu_id(TraceEvent *ev) 35 { 36 return ev->vcpu_id; 37 } 38 39 static inline bool trace_event_is_vcpu(TraceEvent *ev) 40 { 41 return ev->vcpu_id != TRACE_VCPU_EVENT_NONE; 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 /* it's on fast path, avoid consistency checks (asserts) */ 57 #define trace_event_get_state_dynamic_by_id(id) \ 58 (unlikely(trace_events_enabled_count) && _ ## id ## _DSTATE) 59 60 static inline bool trace_event_get_state_dynamic(TraceEvent *ev) 61 { 62 return unlikely(trace_events_enabled_count) && *ev->dstate; 63 } 64 65 static inline bool 66 trace_event_get_vcpu_state_dynamic_by_vcpu_id(CPUState *vcpu, 67 uint32_t vcpu_id) 68 { 69 /* it's on fast path, avoid consistency checks (asserts) */ 70 if (unlikely(trace_events_enabled_count)) { 71 return test_bit(vcpu_id, vcpu->trace_dstate); 72 } else { 73 return false; 74 } 75 } 76 77 static inline bool trace_event_get_vcpu_state_dynamic(CPUState *vcpu, 78 TraceEvent *ev) 79 { 80 uint32_t vcpu_id; 81 assert(trace_event_is_vcpu(ev)); 82 vcpu_id = trace_event_get_vcpu_id(ev); 83 return trace_event_get_vcpu_state_dynamic_by_vcpu_id(vcpu, vcpu_id); 84 } 85 86 #endif /* TRACE__CONTROL_INTERNAL_H */ 87