17c478bd9Sstevel@tonic-gate /* 27c478bd9Sstevel@tonic-gate * CDDL HEADER START 37c478bd9Sstevel@tonic-gate * 47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the 57c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 67c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 77c478bd9Sstevel@tonic-gate * with the License. 87c478bd9Sstevel@tonic-gate * 97c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 107c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 117c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions 127c478bd9Sstevel@tonic-gate * and limitations under the License. 137c478bd9Sstevel@tonic-gate * 147c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 157c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 167c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 177c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 187c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 197c478bd9Sstevel@tonic-gate * 207c478bd9Sstevel@tonic-gate * CDDL HEADER END 217c478bd9Sstevel@tonic-gate */ 227c478bd9Sstevel@tonic-gate /* 23*7aec1d6eScindi * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 247c478bd9Sstevel@tonic-gate * Use is subject to license terms. 257c478bd9Sstevel@tonic-gate * 267c478bd9Sstevel@tonic-gate * stats.c -- simple stats tracking table module 277c478bd9Sstevel@tonic-gate * 287c478bd9Sstevel@tonic-gate */ 297c478bd9Sstevel@tonic-gate 307c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 317c478bd9Sstevel@tonic-gate 327c478bd9Sstevel@tonic-gate #include <sys/types.h> 337c478bd9Sstevel@tonic-gate #include <strings.h> 347c478bd9Sstevel@tonic-gate #include "stats.h" 357c478bd9Sstevel@tonic-gate #include "alloc.h" 367c478bd9Sstevel@tonic-gate #include "out.h" 377c478bd9Sstevel@tonic-gate 387c478bd9Sstevel@tonic-gate struct stats { 397c478bd9Sstevel@tonic-gate struct stats *next; 407c478bd9Sstevel@tonic-gate const char *name; 417c478bd9Sstevel@tonic-gate const char *desc; 427c478bd9Sstevel@tonic-gate enum stats_type { 437c478bd9Sstevel@tonic-gate STATS_COUNTER = 3000, 447c478bd9Sstevel@tonic-gate STATS_ELAPSE, 457c478bd9Sstevel@tonic-gate STATS_STRING 467c478bd9Sstevel@tonic-gate } t; 477c478bd9Sstevel@tonic-gate union { 487c478bd9Sstevel@tonic-gate int counter; 497c478bd9Sstevel@tonic-gate struct { 507c478bd9Sstevel@tonic-gate hrtime_t start; 517c478bd9Sstevel@tonic-gate hrtime_t stop; 527c478bd9Sstevel@tonic-gate } elapse; 537c478bd9Sstevel@tonic-gate const char *string; 547c478bd9Sstevel@tonic-gate } u; 557c478bd9Sstevel@tonic-gate }; 567c478bd9Sstevel@tonic-gate 577c478bd9Sstevel@tonic-gate static int Ext; /* true if extended stats are enabled */ 587c478bd9Sstevel@tonic-gate static struct stats *Statslist; 597c478bd9Sstevel@tonic-gate static struct stats *Laststats; 607c478bd9Sstevel@tonic-gate 617c478bd9Sstevel@tonic-gate 627c478bd9Sstevel@tonic-gate /* 637c478bd9Sstevel@tonic-gate * stats_init -- initialize the stats module 647c478bd9Sstevel@tonic-gate * 657c478bd9Sstevel@tonic-gate */ 667c478bd9Sstevel@tonic-gate 677c478bd9Sstevel@tonic-gate void 687c478bd9Sstevel@tonic-gate stats_init(int ext) 697c478bd9Sstevel@tonic-gate { 707c478bd9Sstevel@tonic-gate Ext = ext; 717c478bd9Sstevel@tonic-gate } 727c478bd9Sstevel@tonic-gate 737c478bd9Sstevel@tonic-gate void 747c478bd9Sstevel@tonic-gate stats_fini(void) 757c478bd9Sstevel@tonic-gate { 767c478bd9Sstevel@tonic-gate } 777c478bd9Sstevel@tonic-gate 787c478bd9Sstevel@tonic-gate static struct stats * 797c478bd9Sstevel@tonic-gate stats_new(const char *name, const char *desc, enum stats_type t) 807c478bd9Sstevel@tonic-gate { 817c478bd9Sstevel@tonic-gate struct stats *ret = MALLOC(sizeof (*ret)); 827c478bd9Sstevel@tonic-gate 837c478bd9Sstevel@tonic-gate bzero(ret, sizeof (*ret)); 847c478bd9Sstevel@tonic-gate ret->t = t; 857c478bd9Sstevel@tonic-gate ret->name = STRDUP(name); 867c478bd9Sstevel@tonic-gate ret->desc = STRDUP(desc); 877c478bd9Sstevel@tonic-gate 887c478bd9Sstevel@tonic-gate if (Laststats == NULL) 897c478bd9Sstevel@tonic-gate Statslist = ret; 907c478bd9Sstevel@tonic-gate else 917c478bd9Sstevel@tonic-gate Laststats->next = ret; 927c478bd9Sstevel@tonic-gate Laststats = ret; 937c478bd9Sstevel@tonic-gate 947c478bd9Sstevel@tonic-gate return (ret); 957c478bd9Sstevel@tonic-gate } 967c478bd9Sstevel@tonic-gate 977c478bd9Sstevel@tonic-gate void 987c478bd9Sstevel@tonic-gate stats_delete(struct stats *sp) 997c478bd9Sstevel@tonic-gate { 1007c478bd9Sstevel@tonic-gate struct stats *p, *s; 1017c478bd9Sstevel@tonic-gate 1027c478bd9Sstevel@tonic-gate if (sp == NULL) 1037c478bd9Sstevel@tonic-gate return; 1047c478bd9Sstevel@tonic-gate 1057c478bd9Sstevel@tonic-gate for (p = NULL, s = Statslist; s != NULL; s = s->next) 1067c478bd9Sstevel@tonic-gate if (s == sp) 1077c478bd9Sstevel@tonic-gate break; 1087c478bd9Sstevel@tonic-gate 1097c478bd9Sstevel@tonic-gate if (s == NULL) 1107c478bd9Sstevel@tonic-gate return; 1117c478bd9Sstevel@tonic-gate 1127c478bd9Sstevel@tonic-gate if (p == NULL) 1137c478bd9Sstevel@tonic-gate Statslist = s->next; 1147c478bd9Sstevel@tonic-gate else 1157c478bd9Sstevel@tonic-gate p->next = s->next; 1167c478bd9Sstevel@tonic-gate 1177c478bd9Sstevel@tonic-gate if (s == Laststats) 1187c478bd9Sstevel@tonic-gate Laststats = p; 1197c478bd9Sstevel@tonic-gate 1207c478bd9Sstevel@tonic-gate FREE((void *)sp->name); 1217c478bd9Sstevel@tonic-gate FREE((void *)sp->desc); 1227c478bd9Sstevel@tonic-gate FREE(sp); 1237c478bd9Sstevel@tonic-gate } 1247c478bd9Sstevel@tonic-gate 1257c478bd9Sstevel@tonic-gate struct stats * 1267c478bd9Sstevel@tonic-gate stats_new_counter(const char *name, const char *desc, int ext) 1277c478bd9Sstevel@tonic-gate { 1287c478bd9Sstevel@tonic-gate if (ext && !Ext) 1297c478bd9Sstevel@tonic-gate return (NULL); /* extended stats not enabled */ 1307c478bd9Sstevel@tonic-gate 1317c478bd9Sstevel@tonic-gate return (stats_new(name, desc, STATS_COUNTER)); 1327c478bd9Sstevel@tonic-gate } 1337c478bd9Sstevel@tonic-gate 1347c478bd9Sstevel@tonic-gate void 1357c478bd9Sstevel@tonic-gate stats_counter_bump(struct stats *sp) 1367c478bd9Sstevel@tonic-gate { 1377c478bd9Sstevel@tonic-gate if (sp == NULL) 1387c478bd9Sstevel@tonic-gate return; 1397c478bd9Sstevel@tonic-gate 1407c478bd9Sstevel@tonic-gate ASSERT(sp->t == STATS_COUNTER); 1417c478bd9Sstevel@tonic-gate 1427c478bd9Sstevel@tonic-gate sp->u.counter++; 1437c478bd9Sstevel@tonic-gate } 1447c478bd9Sstevel@tonic-gate 1457c478bd9Sstevel@tonic-gate void 1467c478bd9Sstevel@tonic-gate stats_counter_add(struct stats *sp, int n) 1477c478bd9Sstevel@tonic-gate { 1487c478bd9Sstevel@tonic-gate if (sp == NULL) 1497c478bd9Sstevel@tonic-gate return; 1507c478bd9Sstevel@tonic-gate 1517c478bd9Sstevel@tonic-gate ASSERT(sp->t == STATS_COUNTER); 1527c478bd9Sstevel@tonic-gate 1537c478bd9Sstevel@tonic-gate sp->u.counter += n; 1547c478bd9Sstevel@tonic-gate } 1557c478bd9Sstevel@tonic-gate 156*7aec1d6eScindi void 157*7aec1d6eScindi stats_counter_reset(struct stats *sp) 158*7aec1d6eScindi { 159*7aec1d6eScindi if (sp == NULL) 160*7aec1d6eScindi return; 161*7aec1d6eScindi 162*7aec1d6eScindi ASSERT(sp->t == STATS_COUNTER); 163*7aec1d6eScindi 164*7aec1d6eScindi sp->u.counter = 0; 165*7aec1d6eScindi } 166*7aec1d6eScindi 1677c478bd9Sstevel@tonic-gate int 1687c478bd9Sstevel@tonic-gate stats_counter_value(struct stats *sp) 1697c478bd9Sstevel@tonic-gate { 1707c478bd9Sstevel@tonic-gate if (sp == NULL) 1717c478bd9Sstevel@tonic-gate return (0); 1727c478bd9Sstevel@tonic-gate 1737c478bd9Sstevel@tonic-gate ASSERT(sp->t == STATS_COUNTER); 1747c478bd9Sstevel@tonic-gate 1757c478bd9Sstevel@tonic-gate return (sp->u.counter); 1767c478bd9Sstevel@tonic-gate } 1777c478bd9Sstevel@tonic-gate 1787c478bd9Sstevel@tonic-gate struct stats * 1797c478bd9Sstevel@tonic-gate stats_new_elapse(const char *name, const char *desc, int ext) 1807c478bd9Sstevel@tonic-gate { 1817c478bd9Sstevel@tonic-gate if (ext && !Ext) 1827c478bd9Sstevel@tonic-gate return (NULL); /* extended stats not enabled */ 1837c478bd9Sstevel@tonic-gate 1847c478bd9Sstevel@tonic-gate return (stats_new(name, desc, STATS_ELAPSE)); 1857c478bd9Sstevel@tonic-gate } 1867c478bd9Sstevel@tonic-gate 1877c478bd9Sstevel@tonic-gate void 1887c478bd9Sstevel@tonic-gate stats_elapse_start(struct stats *sp) 1897c478bd9Sstevel@tonic-gate { 1907c478bd9Sstevel@tonic-gate if (sp == NULL) 1917c478bd9Sstevel@tonic-gate return; 1927c478bd9Sstevel@tonic-gate 1937c478bd9Sstevel@tonic-gate ASSERT(sp->t == STATS_ELAPSE); 1947c478bd9Sstevel@tonic-gate 1957c478bd9Sstevel@tonic-gate sp->u.elapse.start = gethrtime(); 1967c478bd9Sstevel@tonic-gate } 1977c478bd9Sstevel@tonic-gate 1987c478bd9Sstevel@tonic-gate void 1997c478bd9Sstevel@tonic-gate stats_elapse_stop(struct stats *sp) 2007c478bd9Sstevel@tonic-gate { 2017c478bd9Sstevel@tonic-gate if (sp == NULL) 2027c478bd9Sstevel@tonic-gate return; 2037c478bd9Sstevel@tonic-gate 2047c478bd9Sstevel@tonic-gate ASSERT(sp->t == STATS_ELAPSE); 2057c478bd9Sstevel@tonic-gate 2067c478bd9Sstevel@tonic-gate sp->u.elapse.stop = gethrtime(); 2077c478bd9Sstevel@tonic-gate } 2087c478bd9Sstevel@tonic-gate 2097c478bd9Sstevel@tonic-gate struct stats * 2107c478bd9Sstevel@tonic-gate stats_new_string(const char *name, const char *desc, int ext) 2117c478bd9Sstevel@tonic-gate { 2127c478bd9Sstevel@tonic-gate if (ext && !Ext) 2137c478bd9Sstevel@tonic-gate return (NULL); /* extended stats not enabled */ 2147c478bd9Sstevel@tonic-gate 2157c478bd9Sstevel@tonic-gate return (stats_new(name, desc, STATS_STRING)); 2167c478bd9Sstevel@tonic-gate } 2177c478bd9Sstevel@tonic-gate 2187c478bd9Sstevel@tonic-gate void 2197c478bd9Sstevel@tonic-gate stats_string_set(struct stats *sp, const char *s) 2207c478bd9Sstevel@tonic-gate { 2217c478bd9Sstevel@tonic-gate if (sp == NULL) 2227c478bd9Sstevel@tonic-gate return; 2237c478bd9Sstevel@tonic-gate 2247c478bd9Sstevel@tonic-gate ASSERT(sp->t == STATS_STRING); 2257c478bd9Sstevel@tonic-gate 2267c478bd9Sstevel@tonic-gate sp->u.string = s; 2277c478bd9Sstevel@tonic-gate } 2287c478bd9Sstevel@tonic-gate 2297c478bd9Sstevel@tonic-gate /* 2307c478bd9Sstevel@tonic-gate * stats_publish -- spew all stats 2317c478bd9Sstevel@tonic-gate * 2327c478bd9Sstevel@tonic-gate */ 2337c478bd9Sstevel@tonic-gate 2347c478bd9Sstevel@tonic-gate void 2357c478bd9Sstevel@tonic-gate stats_publish(void) 2367c478bd9Sstevel@tonic-gate { 2377c478bd9Sstevel@tonic-gate struct stats *sp; 2387c478bd9Sstevel@tonic-gate 2397c478bd9Sstevel@tonic-gate for (sp = Statslist; sp; sp = sp->next) 2407c478bd9Sstevel@tonic-gate switch (sp->t) { 2417c478bd9Sstevel@tonic-gate case STATS_COUNTER: 2427c478bd9Sstevel@tonic-gate out(O_OK, "%32s %13d %s", sp->name, 2437c478bd9Sstevel@tonic-gate sp->u.counter, sp->desc); 2447c478bd9Sstevel@tonic-gate break; 2457c478bd9Sstevel@tonic-gate 2467c478bd9Sstevel@tonic-gate case STATS_ELAPSE: 2477c478bd9Sstevel@tonic-gate if (sp->u.elapse.start && sp->u.elapse.stop) { 2487c478bd9Sstevel@tonic-gate hrtime_t delta = 2497c478bd9Sstevel@tonic-gate sp->u.elapse.stop - sp->u.elapse.start; 2507c478bd9Sstevel@tonic-gate 2517c478bd9Sstevel@tonic-gate out(O_OK, "%32s %11lldns %s", sp->name, 2527c478bd9Sstevel@tonic-gate delta, sp->desc); 2537c478bd9Sstevel@tonic-gate } 2547c478bd9Sstevel@tonic-gate break; 2557c478bd9Sstevel@tonic-gate 2567c478bd9Sstevel@tonic-gate case STATS_STRING: 2577c478bd9Sstevel@tonic-gate out(O_OK, "%32s %13s %s", sp->name, sp->u.string, 2587c478bd9Sstevel@tonic-gate sp->desc); 2597c478bd9Sstevel@tonic-gate break; 2607c478bd9Sstevel@tonic-gate 2617c478bd9Sstevel@tonic-gate default: 2627c478bd9Sstevel@tonic-gate out(O_DIE, "stats_publish: unknown type %d", sp->t); 2637c478bd9Sstevel@tonic-gate } 2647c478bd9Sstevel@tonic-gate } 265