1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright (c) 1998, Sun Microsystems, Inc. 24 * All rights reserved. 25 * Copyright 2012 Milan Jurik. All rights reserved. 26 */ 27 28 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 29 /* All Rights Reserved */ 30 31 #include <sys/param.h> 32 #include <sys/types.h> 33 #include <sys/sysmacros.h> 34 #include <sys/systm.h> 35 #include <sys/errno.h> 36 #include <sys/proc.h> 37 #include <sys/debug.h> 38 39 /* 40 * Profiling. 41 */ 42 int 43 profil(unsigned short *bufbase, size_t bufsize, ulong_t pcoffset, 44 uint_t pcscale) 45 { 46 struct proc *p = ttoproc(curthread); 47 48 if (pcscale == 1) 49 pcscale = 0; 50 51 mutex_enter(&p->p_pflock); 52 p->p_prof.pr_base = bufbase; 53 p->p_prof.pr_size = bufsize; 54 p->p_prof.pr_off = pcoffset; 55 p->p_prof.pr_scale = pcscale; 56 57 /* pcsample and profil are mutually exclusive */ 58 p->p_prof.pr_samples = 0; 59 60 mutex_exit(&p->p_pflock); 61 mutex_enter(&p->p_lock); 62 set_proc_post_sys(p); /* activate post_syscall profiling code */ 63 mutex_exit(&p->p_lock); 64 return (0); 65 } 66 67 68 /* 69 * PC Sampling 70 */ 71 long 72 pcsample(void *buf, long nsamples) 73 { 74 struct proc *p = ttoproc(curthread); 75 long count = 0; 76 77 if (nsamples < 0 || 78 ((get_udatamodel() != DATAMODEL_NATIVE) && (nsamples > INT32_MAX))) 79 return (set_errno(EINVAL)); 80 81 mutex_enter(&p->p_pflock); 82 p->p_prof.pr_base = buf; 83 p->p_prof.pr_size = nsamples; 84 p->p_prof.pr_scale = 1; 85 count = p->p_prof.pr_samples; 86 p->p_prof.pr_samples = 0; 87 mutex_exit(&p->p_pflock); 88 89 mutex_enter(&p->p_lock); 90 set_proc_post_sys(p); /* activate post_syscall profiling code */ 91 mutex_exit(&p->p_lock); 92 93 return (count); 94 } 95