[lttv.git] / trunk / attic / usertrace-attic / lttng_usertrace.h


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

#ifndef _LTTNG_USERTRACE_H
#define _LTTNG_USERTRACE_H

#include <errno.h>
#include <syscall.h>

#include <asm/atomic.h>

//Put in asm-i486/unistd.h
#define __NR_ltt_update	294
#define __NR_ltt_switch	295

#undef NR_syscalls
#define NR_syscalls 296

#ifndef _LIBC
// Put in bits/syscall.h
#define SYS_ltt_update	__NR_ltt_update
#define SYS_ltt_switch	__NR_ltt_switch
#endif

struct ltt_buf {
	void *start;
	size_t length;
	atomic_t	offset;
	atomic_t	reserve_count;
	atomic_t	commit_count;

	atomic_t	events_lost;
};

struct lttng_trace_info {
	int	active:1;
	int destroy:1;
	int filter;
	atomic_t nesting;
	struct {
		struct ltt_buf facilities;
		struct ltt_buf cpu;
	} channel;
};


void __lttng_sig_trace_handler(int signo);

/* Call this at the beginning of a new thread, except for the main() */
void lttng_thread_init(void);

void lttng_free_trace_info(struct lttng_trace_info *info);

static inline _syscall1(int, ltt_switch, unsigned long, addr)
static inline _syscall5(int, ltt_update, unsigned long *, cpu_addr, unsigned long *, fac_addr, int *, active, int *, filter, int *, destroy)

#endif //_LTTNG_USERTRACE_H
Commit	Line	Data
b8b00688	1
	2	/* LTTng user-space tracing header
	3	*
	4	* Copyright 2006 Mathieu Desnoyers
	5	*
	6	*/
	7
	8	#ifndef _LTTNG_USERTRACE_H
	9	#define _LTTNG_USERTRACE_H
	10
	11	#include <errno.h>
	12	#include <syscall.h>
	13
0166aeb5	14	#include <asm/atomic.h>
0166aeb5	15
b8b00688	16	//Put in asm-i486/unistd.h
	17	#define __NR_ltt_update 294
	18	#define __NR_ltt_switch 295
	19
	20	#undef NR_syscalls
	21	#define NR_syscalls 296
	22
	23	#ifndef _LIBC
	24	// Put in bits/syscall.h
	25	#define SYS_ltt_update __NR_ltt_update
	26	#define SYS_ltt_switch __NR_ltt_switch
	27	#endif
	28
0166aeb5	29	struct ltt_buf {
	30	void *start;
	31	size_t length;
	32	atomic_t offset;
	33	atomic_t reserve_count;
	34	atomic_t commit_count;
	35
	36	atomic_t events_lost;
	37	};
	38
	39	struct lttng_trace_info {
	40	int active:1;
	41	int destroy:1;
	42	int filter;
	43	atomic_t nesting;
	44	struct {
	45	struct ltt_buf facilities;
	46	struct ltt_buf cpu;
	47	} channel;
	48	};
	49
	50
b8b00688	51	void __lttng_sig_trace_handler(int signo);
b8b00688	52
1a1e2a8c	53	/* Call this at the beginning of a new thread, except for the main() */
	54	void lttng_thread_init(void);
	55
0166aeb5	56	void lttng_free_trace_info(struct lttng_trace_info *info);
0166aeb5	57
92f441a7	58	static inline _syscall1(int, ltt_switch, unsigned long, addr)
0166aeb5	59	static inline _syscall5(int, ltt_update, unsigned long , cpu_addr, unsigned long , fac_addr, int , active, int , filter, int *, destroy)
b8b00688	60
b8b00688	61	#endif //_LTTNG_USERTRACE_H