[lttv.git] / usertrace-fast / ltt-usertrace-fast.h


/* LTTng user-space "fast" tracing header
 *
 * Copyright 2006 Mathieu Desnoyers
 *
 */

#ifndef _LTT_USERTRACE_FAST_H
#define _LTT_USERTRACE_FAST_H

#include <errno.h>
#include <asm/atomic.h>

#ifndef	LTT_BUF_SIZE_CPU
#define LTT_BUF_SIZE_CPU 1048576
#endif //LTT_BUF_SIZE_CPU

#ifndef	LTT_BUF_SIZE_FACILITIES
#define LTT_BUF_SIZE_FACILITIES 4096
#endif //LTT_BUF_SIZE_FACILITIES

struct ltt_buf {
	atomic_t	offset;
	atomic_t	reserve_count;
	atomic_t	commit_count;

	atomic_t	events_lost;
};

struct lttng_trace_info {
	struct _pthread_cleanup_buffer cleanup;
	int init;
	int filter;
	atomic_t nesting;
	struct {
		struct ltt_buf facilities;
		char facilities_buf[LTT_BUF_SIZE_FACILITIES] __attribute__ ((aligned (8)));
		struct ltt_buf cpu;
		char cpu_buf[LTT_BUF_SIZE_CPU] __attribute__ ((aligned (8)));
	} channel;
};

extern __thread struct lttng_trace_info lttng_trace_info;

void ltt_thread_init(void);

#endif //_LTT_USERTRACE_FAST_H
Commit	Line	Data
	1
	2	/* LTTng user-space "fast" tracing header
	3	*
	4	* Copyright 2006 Mathieu Desnoyers
	5	*
	6	*/
	7
	8	#ifndef _LTT_USERTRACE_FAST_H
	9	#define _LTT_USERTRACE_FAST_H
	10
	11	#include <errno.h>
	12	#include <asm/atomic.h>
	13
	14	#ifndef LTT_BUF_SIZE_CPU
	15	#define LTT_BUF_SIZE_CPU 1048576
	16	#endif //LTT_BUF_SIZE_CPU
	17
	18	#ifndef LTT_BUF_SIZE_FACILITIES
	19	#define LTT_BUF_SIZE_FACILITIES 4096
	20	#endif //LTT_BUF_SIZE_FACILITIES
	21
	22	struct ltt_buf {
	23	atomic_t offset;
	24	atomic_t reserve_count;
	25	atomic_t commit_count;
	26
	27	atomic_t events_lost;
	28	};
	29
	30	struct lttng_trace_info {
	31	struct _pthread_cleanup_buffer cleanup;
	32	int init;
	33	int filter;
	34	atomic_t nesting;
	35	struct {
	36	struct ltt_buf facilities;
	37	char facilities_buf[LTT_BUF_SIZE_FACILITIES] __attribute__ ((aligned (8)));
	38	struct ltt_buf cpu;
	39	char cpu_buf[LTT_BUF_SIZE_CPU] __attribute__ ((aligned (8)));
	40	} channel;
	41	};
	42
	43	extern __thread struct lttng_trace_info lttng_trace_info;
	44
	45	void ltt_thread_init(void);
	46
	47	#endif //_LTT_USERTRACE_FAST_H