[mirror_qemu.git] / trace / event-internal.h

/*
 * Interface for configuring and controlling the state of tracing events.
 *
 * Copyright (C) 2012-2016 Lluís Vilanova <vilanova@ac.upc.edu>
 *
 * This work is licensed under the terms of the GNU GPL, version 2 or later.
 * See the COPYING file in the top-level directory.
 */

#ifndef TRACE__EVENT_INTERNAL_H
#define TRACE__EVENT_INTERNAL_H

/*
 * Special value for TraceEvent.vcpu_id field to indicate
 * that the event is not VCPU specific
 */
#define TRACE_VCPU_EVENT_NONE ((uint32_t)-1)

/**
 * TraceEvent:
 * @id: Unique event identifier.
 * @name: Event name.
 * @sstate: Static tracing state.
 * @dstate: Dynamic tracing state
 *
 * Interpretation of @dstate depends on whether the event has the 'vcpu'
 *  property:
 * - false: Boolean value indicating whether the event is active.
 * - true : Integral counting the number of vCPUs that have this event enabled.
 *
 * Opaque generic description of a tracing event.
 */
typedef struct TraceEvent {
    uint32_t id;
    const char * name;
    const bool sstate;
    uint16_t *dstate;
} TraceEvent;

void trace_event_set_state_dynamic_init(TraceEvent *ev, bool state);

#endif /* TRACE__EVENT_INTERNAL_H */
Commit	Line	Data
45be2f5d LV	1	/*
	2	* Interface for configuring and controlling the state of tracing events.
	3	*
17f7ac75	4	* Copyright (C) 2012-2016 Lluís Vilanova <vilanova@ac.upc.edu>
45be2f5d LV	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__EVENT_INTERNAL_H
	11	#define TRACE__EVENT_INTERNAL_H
	12
ef4c9fc8 DB	13	/*
	14	* Special value for TraceEvent.vcpu_id field to indicate
	15	* that the event is not VCPU specific
	16	*/
	17	#define TRACE_VCPU_EVENT_NONE ((uint32_t)-1)
	18
45be2f5d LV	19	/**
	20	* TraceEvent:
	21	* @id: Unique event identifier.
	22	* @name: Event name.
	23	* @sstate: Static tracing state.
93977402 DB	24	* @dstate: Dynamic tracing state
	25	*
	26	* Interpretation of @dstate depends on whether the event has the 'vcpu'
	27	* property:
	28	* - false: Boolean value indicating whether the event is active.
	29	* - true : Integral counting the number of vCPUs that have this event enabled.
45be2f5d LV	30	*
	31	* Opaque generic description of a tracing event.
	32	*/
	33	typedef struct TraceEvent {
a82417b5	34	uint32_t id;
45be2f5d LV	35	const char * name;
45be2f5d LV	36	const bool sstate;
93977402	37	uint16_t *dstate;
45be2f5d LV	38	} TraceEvent;
45be2f5d LV	39
a4d50b1d	40	void trace_event_set_state_dynamic_init(TraceEvent *ev, bool state);
45be2f5d	41
175de524	42	#endif /* TRACE__EVENT_INTERNAL_H */