1/* 2 * Interface for configuring and controlling the state of tracing events. 3 * 4 * Copyright (C) 2011-2016 LluĂs 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 18extern int trace_events_enabled_count; 19 20 21static inline bool trace_event_is_pattern(const char *str) 22{ 23 assert(str != NULL); 24 return strchr(str, '*') != NULL; 25} 26 27static inline uint32_t trace_event_get_id(TraceEvent *ev) 28{ 29 assert(ev != NULL); 30 return ev->id; 31} 32 33static inline uint32_t trace_event_get_vcpu_id(TraceEvent *ev) 34{ 35 return ev->vcpu_id; 36} 37 38static inline bool trace_event_is_vcpu(TraceEvent *ev) 39{ 40 return ev->vcpu_id != TRACE_VCPU_EVENT_NONE; 41} 42 43static inline const char * trace_event_get_name(TraceEvent *ev) 44{ 45 assert(ev != NULL); 46 return ev->name; 47} 48 49static 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 59static inline bool trace_event_get_state_dynamic(TraceEvent *ev) 60{ 61 return unlikely(trace_events_enabled_count) && *ev->dstate; 62} 63 64static inline bool 65trace_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 76static 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 86void trace_event_register_group(TraceEvent **events); 87 88#endif /* TRACE__CONTROL_INTERNAL_H */ 89