/* $NetBSD: subr_evcnt.c,v 1.6 2009/03/29 18:21:06 pooka Exp $ */ /* * Copyright (c) 1996, 2000 Christopher G. Demetriou * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed for the * NetBSD Project. See http://www.NetBSD.org/ for * information about NetBSD. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * * --(license Id: LICENSE.proto,v 1.1 2000/06/13 21:40:26 cgd Exp )-- */ /* * Copyright (c) 1992, 1993 * The Regents of the University of California. All rights reserved. * * This software was developed by the Computer Systems Engineering group * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and * contributed to Berkeley. * * All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the University of * California, Lawrence Berkeley Laboratories. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * from: Header: subr_autoconf.c,v 1.12 93/02/01 19:31:48 torek Exp (LBL) * * @(#)subr_autoconf.c 8.3 (Berkeley) 5/17/94 */ #include __KERNEL_RCSID(0, "$NetBSD: subr_evcnt.c,v 1.6 2009/03/29 18:21:06 pooka Exp $"); #include #include #include #include /* list of all events */ struct evcntlist allevents = TAILQ_HEAD_INITIALIZER(allevents); static kmutex_t evmtx; /* * We need a dummy object to stuff into the evcnt link set to * ensure that there always is at least one object in the set. */ static struct evcnt dummy_static_evcnt; __link_set_add_bss(evcnts, dummy_static_evcnt); /* * Initialize event counters. This does the attach procedure for * each of the static event counters in the "evcnts" link set. */ void evcnt_init(void) { __link_set_decl(evcnts, struct evcnt); struct evcnt * const *evp; mutex_init(&evmtx, MUTEX_DEFAULT, IPL_NONE); __link_set_foreach(evp, evcnts) { if (*evp == &dummy_static_evcnt) continue; evcnt_attach_static(*evp); } } /* * Attach a statically-initialized event. The type and string pointers * are already set up. */ void evcnt_attach_static(struct evcnt *ev) { int len; len = strlen(ev->ev_group); #ifdef DIAGNOSTIC if (len >= EVCNT_STRING_MAX) /* ..._MAX includes NUL */ panic("evcnt_attach_static: group length (%s)", ev->ev_group); #endif ev->ev_grouplen = len; len = strlen(ev->ev_name); #ifdef DIAGNOSTIC if (len >= EVCNT_STRING_MAX) /* ..._MAX includes NUL */ panic("evcnt_attach_static: name length (%s)", ev->ev_name); #endif ev->ev_namelen = len; mutex_enter(&evmtx); TAILQ_INSERT_TAIL(&allevents, ev, ev_list); mutex_exit(&evmtx); } /* * Attach a dynamically-initialized event. Zero it, set up the type * and string pointers and then act like it was statically initialized. */ void evcnt_attach_dynamic(struct evcnt *ev, int type, const struct evcnt *parent, const char *group, const char *name) { memset(ev, 0, sizeof *ev); ev->ev_type = type; ev->ev_parent = parent; ev->ev_group = group; ev->ev_name = name; evcnt_attach_static(ev); } /* * Detach an event. */ void evcnt_detach(struct evcnt *ev) { mutex_enter(&evmtx); TAILQ_REMOVE(&allevents, ev, ev_list); mutex_exit(&evmtx); }