1 /* $NetBSD: tprof.h,v 1.5 2011/02/05 14:04:40 yamt Exp $ */ 2 3 /*- 4 * Copyright (c)2008,2009,2010 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 /* 33 * definitions used by backend drivers 34 */ 35 36 #include <sys/types.h> 37 38 #include <dev/tprof/tprof_types.h> 39 40 typedef struct tprof_backend_cookie tprof_backend_cookie_t; 41 42 typedef struct tprof_backend_ops { 43 uint64_t (*tbo_estimate_freq)(void); /* samples per second */ 44 int (*tbo_start)(tprof_backend_cookie_t *); 45 void (*tbo_stop)(tprof_backend_cookie_t *); 46 } tprof_backend_ops_t; 47 48 #define TPROF_BACKEND_VERSION 3 49 int tprof_backend_register(const char *, const tprof_backend_ops_t *, int); 50 int tprof_backend_unregister(const char *); 51 52 typedef struct { 53 uintptr_t tfi_pc; /* program counter */ 54 bool tfi_inkernel; /* if tfi_pc is in the kernel address space */ 55 } tprof_frame_info_t; 56 57 void tprof_sample(tprof_backend_cookie_t *, const tprof_frame_info_t *); 58 59 #endif /* _DEV_TPROF_TPROF_H_ */ 60