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 */ 26 27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28 /* All Rights Reserved */ 29 30 31 #ident "%Z%%M% %I% %E% SMI" /* from SVr4.0 1.78 */ 32 33 #include <sys/param.h> 34 #include <sys/types.h> 35 #include <sys/sysmacros.h> 36 #include <sys/systm.h> 37 #include <sys/errno.h> 38 #include <sys/proc.h> 39 #include <sys/debug.h> 40 41 /* 42 * Profiling. 43 */ 44 int 45 profil(unsigned short *bufbase, size_t bufsize, u_long pcoffset, u_int pcscale) 46 { 47 struct proc *p = ttoproc(curthread); 48 49 if (pcscale == 1) 50 pcscale = 0; 51 52 mutex_enter(&p->p_pflock); 53 p->p_prof.pr_base = bufbase; 54 p->p_prof.pr_size = bufsize; 55 p->p_prof.pr_off = pcoffset; 56 p->p_prof.pr_scale = pcscale; 57 58 /* pcsample and profil are mutually exclusive */ 59 p->p_prof.pr_samples = 0; 60 61 mutex_exit(&p->p_pflock); 62 mutex_enter(&p->p_lock); 63 set_proc_post_sys(p); /* activate post_syscall profiling code */ 64 mutex_exit(&p->p_lock); 65 return (0); 66 } 67 68 69 /* 70 * PC Sampling 71 */ 72 long 73 pcsample(void *buf, long nsamples) 74 { 75 struct proc *p = ttoproc(curthread); 76 long count = 0; 77 78 if (nsamples < 0 || 79 ((get_udatamodel() != DATAMODEL_NATIVE) && (nsamples > INT32_MAX))) 80 return (set_errno(EINVAL)); 81 82 mutex_enter(&p->p_pflock); 83 p->p_prof.pr_base = buf; 84 p->p_prof.pr_size = nsamples; 85 p->p_prof.pr_scale = 1; 86 count = p->p_prof.pr_samples; 87 p->p_prof.pr_samples = 0; 88 mutex_exit(&p->p_pflock); 89 90 mutex_enter(&p->p_lock); 91 set_proc_post_sys(p); /* activate post_syscall profiling code */ 92 mutex_exit(&p->p_lock); 93 94 return (count); 95 } 96