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tprof.h revision 1.2 
      1 /*	$NetBSD: tprof.h,v 1.2 2009/03/10 14:45:02 yamt Exp $	*/
      2 
      3 /*-
      4  * Copyright (c)2008,2009 YAMAMOTO Takashi,
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #ifndef _DEV_TPROF_TPROF_H_
     30 #define _DEV_TPROF_TPROF_H_
     31 
     32 typedef struct tprof_backend_cookie tprof_backend_cookie_t;
     33 
     34 typedef struct tprof_backend_ops {
     35 	uint64_t (*tbo_estimate_freq)(void);
     36 	int (*tbo_start)(tprof_backend_cookie_t *);
     37 	void (*tbo_stop)(tprof_backend_cookie_t *);
     38 } tprof_backend_ops_t;
     39 
     40 #define	TPROF_BACKEND_VERSION	1
     41 int tprof_backend_register(const char *, const tprof_backend_ops_t *, int);
     42 int tprof_backend_unregister(const char *);
     43 
     44 struct trapframe;
     45 void tprof_sample(tprof_backend_cookie_t *, const struct trapframe *);
     46 
     47 #endif /* _DEV_TPROF_TPROF_H_ */
     48