bt_debug.c revision 1.12
1 /* $NetBSD: bt_debug.c,v 1.12 2006/01/24 17:24:37 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1990, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Mike Olson. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #if HAVE_NBTOOL_CONFIG_H 36 #include "nbtool_config.h" 37 #endif 38 39 #include <sys/cdefs.h> 40 #if defined(LIBC_SCCS) && !defined(lint) 41 #if 0 42 static char sccsid[] = "@(#)bt_debug.c 8.5 (Berkeley) 8/17/94"; 43 #else 44 __RCSID("$NetBSD: bt_debug.c,v 1.12 2006/01/24 17:24:37 christos Exp $"); 45 #endif 46 #endif /* LIBC_SCCS and not lint */ 47 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <string.h> 51 52 #include <db.h> 53 #include "btree.h" 54 55 #ifdef DEBUG 56 /* 57 * BT_DUMP -- Dump the tree 58 * 59 * Parameters: 60 * dbp: pointer to the DB 61 */ 62 void 63 __bt_dump(dbp) 64 DB *dbp; 65 { 66 BTREE *t; 67 PAGE *h; 68 pgno_t i; 69 const char *sep; 70 71 t = dbp->internal; 72 (void)fprintf(stderr, "%s: pgsz %d", 73 F_ISSET(t, B_INMEM) ? "memory" : "disk", t->bt_psize); 74 if (F_ISSET(t, R_RECNO)) 75 (void)fprintf(stderr, " keys %lu", (u_long) t->bt_nrecs); 76 #undef X 77 #define X(flag, name) \ 78 if (F_ISSET(t, flag)) { \ 79 (void)fprintf(stderr, "%s%s", sep, name); \ 80 sep = ", "; \ 81 } 82 if (t->flags != 0) { 83 sep = " flags ("; 84 X(R_FIXLEN, "FIXLEN"); 85 X(B_INMEM, "INMEM"); 86 X(B_NODUPS, "NODUPS"); 87 X(B_RDONLY, "RDONLY"); 88 X(R_RECNO, "RECNO"); 89 X(B_METADIRTY,"METADIRTY"); 90 (void)fprintf(stderr, ")\n"); 91 } 92 #undef X 93 94 for (i = P_ROOT; (h = mpool_get(t->bt_mp, i, 0)) != NULL; ++i) { 95 __bt_dpage(h); 96 (void)mpool_put(t->bt_mp, h, 0); 97 } 98 } 99 100 /* 101 * BT_DMPAGE -- Dump the meta page 102 * 103 * Parameters: 104 * h: pointer to the PAGE 105 */ 106 void 107 __bt_dmpage(h) 108 PAGE *h; 109 { 110 BTMETA *m; 111 const char *sep; 112 113 m = (BTMETA *)(void *)h; 114 (void)fprintf(stderr, "magic %lx\n", (u_long) m->magic); 115 (void)fprintf(stderr, "version %lu\n", (u_long) m->version); 116 (void)fprintf(stderr, "psize %lu\n", (u_long) m->psize); 117 (void)fprintf(stderr, "free %lu\n", (u_long) m->free); 118 (void)fprintf(stderr, "nrecs %lu\n", (u_long) m->nrecs); 119 (void)fprintf(stderr, "flags %lu", (u_long) m->flags); 120 #undef X 121 #define X(flag, name) \ 122 if (m->flags & flag) { \ 123 (void)fprintf(stderr, "%s%s", sep, name); \ 124 sep = ", "; \ 125 } 126 if (m->flags) { 127 sep = " ("; 128 X(B_NODUPS, "NODUPS"); 129 X(R_RECNO, "RECNO"); 130 (void)fprintf(stderr, ")"); 131 } 132 } 133 134 /* 135 * BT_DNPAGE -- Dump the page 136 * 137 * Parameters: 138 * n: page number to dump. 139 */ 140 void 141 __bt_dnpage(dbp, pgno) 142 DB *dbp; 143 pgno_t pgno; 144 { 145 BTREE *t; 146 PAGE *h; 147 148 t = dbp->internal; 149 if ((h = mpool_get(t->bt_mp, pgno, 0)) != NULL) { 150 __bt_dpage(h); 151 (void)mpool_put(t->bt_mp, h, 0); 152 } 153 } 154 155 /* 156 * BT_DPAGE -- Dump the page 157 * 158 * Parameters: 159 * h: pointer to the PAGE 160 */ 161 void 162 __bt_dpage(h) 163 PAGE *h; 164 { 165 BINTERNAL *bi; 166 BLEAF *bl; 167 RINTERNAL *ri; 168 RLEAF *rl; 169 indx_t cur, top; 170 const char *sep; 171 172 (void)fprintf(stderr, " page %d: (", h->pgno); 173 #undef X 174 #define X(flag, name) \ 175 if (h->flags & flag) { \ 176 (void)fprintf(stderr, "%s%s", sep, name); \ 177 sep = ", "; \ 178 } 179 sep = ""; 180 X(P_BINTERNAL, "BINTERNAL") /* types */ 181 X(P_BLEAF, "BLEAF") 182 X(P_RINTERNAL, "RINTERNAL") /* types */ 183 X(P_RLEAF, "RLEAF") 184 X(P_OVERFLOW, "OVERFLOW") 185 X(P_PRESERVE, "PRESERVE"); 186 (void)fprintf(stderr, ")\n"); 187 #undef X 188 189 (void)fprintf(stderr, "\tprev %2d next %2d", h->prevpg, h->nextpg); 190 if (h->flags & P_OVERFLOW) 191 return; 192 193 top = NEXTINDEX(h); 194 (void)fprintf(stderr, " lower %3d upper %3d nextind %d\n", 195 h->lower, h->upper, top); 196 for (cur = 0; cur < top; cur++) { 197 (void)fprintf(stderr, "\t[%03d] %4d ", cur, h->linp[cur]); 198 switch (h->flags & P_TYPE) { 199 case P_BINTERNAL: 200 bi = GETBINTERNAL(h, cur); 201 (void)fprintf(stderr, 202 "size %03d pgno %03d", bi->ksize, bi->pgno); 203 if (bi->flags & P_BIGKEY) 204 (void)fprintf(stderr, " (indirect)"); 205 else if (bi->ksize) 206 (void)fprintf(stderr, 207 " {%.*s}", (int)bi->ksize, bi->bytes); 208 break; 209 case P_RINTERNAL: 210 ri = GETRINTERNAL(h, cur); 211 (void)fprintf(stderr, "entries %03d pgno %03d", 212 ri->nrecs, ri->pgno); 213 break; 214 case P_BLEAF: 215 bl = GETBLEAF(h, cur); 216 if (bl->flags & P_BIGKEY) 217 (void)fprintf(stderr, 218 "big key page %lu size %u/", 219 (u_long) *(pgno_t *)(void *)bl->bytes, 220 *(u_int32_t *)(void *)(bl->bytes + sizeof(pgno_t))); 221 else if (bl->ksize) 222 (void)fprintf(stderr, "%s/", bl->bytes); 223 if (bl->flags & P_BIGDATA) 224 (void)fprintf(stderr, 225 "big data page %lu size %u", 226 (u_long) *(pgno_t *)(void *)(bl->bytes + bl->ksize), 227 *(u_int32_t *)(void *)(bl->bytes + bl->ksize + 228 sizeof(pgno_t))); 229 else if (bl->dsize) 230 (void)fprintf(stderr, "%.*s", 231 (int)bl->dsize, bl->bytes + bl->ksize); 232 break; 233 case P_RLEAF: 234 rl = GETRLEAF(h, cur); 235 if (rl->flags & P_BIGDATA) 236 (void)fprintf(stderr, 237 "big data page %lu size %u", 238 (u_long) *(pgno_t *)(void *)rl->bytes, 239 *(u_int32_t *)(void *)(rl->bytes + sizeof(pgno_t))); 240 else if (rl->dsize) 241 (void)fprintf(stderr, 242 "%.*s", (int)rl->dsize, rl->bytes); 243 break; 244 } 245 (void)fprintf(stderr, "\n"); 246 } 247 } 248 #endif 249 250 #ifdef STATISTICS 251 /* 252 * BT_STAT -- Gather/print the tree statistics 253 * 254 * Parameters: 255 * dbp: pointer to the DB 256 */ 257 void 258 __bt_stat(dbp) 259 DB *dbp; 260 { 261 extern u_long bt_cache_hit, bt_cache_miss, bt_pfxsaved, bt_rootsplit; 262 extern u_long bt_sortsplit, bt_split; 263 BTREE *t; 264 PAGE *h; 265 pgno_t i, pcont, pinternal, pleaf; 266 u_long ifree, lfree, nkeys; 267 int levels; 268 269 t = dbp->internal; 270 pcont = pinternal = pleaf = 0; 271 nkeys = ifree = lfree = 0; 272 for (i = P_ROOT; (h = mpool_get(t->bt_mp, i, 0)) != NULL; ++i) { 273 switch (h->flags & P_TYPE) { 274 case P_BINTERNAL: 275 case P_RINTERNAL: 276 ++pinternal; 277 ifree += h->upper - h->lower; 278 break; 279 case P_BLEAF: 280 case P_RLEAF: 281 ++pleaf; 282 lfree += h->upper - h->lower; 283 nkeys += NEXTINDEX(h); 284 break; 285 case P_OVERFLOW: 286 ++pcont; 287 break; 288 } 289 (void)mpool_put(t->bt_mp, h, 0); 290 } 291 292 /* Count the levels of the tree. */ 293 for (i = P_ROOT, levels = 0 ;; ++levels) { 294 h = mpool_get(t->bt_mp, i, 0); 295 if (h->flags & (P_BLEAF|P_RLEAF)) { 296 if (levels == 0) 297 levels = 1; 298 (void)mpool_put(t->bt_mp, h, 0); 299 break; 300 } 301 i = F_ISSET(t, R_RECNO) ? 302 GETRINTERNAL(h, 0)->pgno : 303 GETBINTERNAL(h, 0)->pgno; 304 (void)mpool_put(t->bt_mp, h, 0); 305 } 306 307 (void)fprintf(stderr, "%d level%s with %ld keys", 308 levels, levels == 1 ? "" : "s", nkeys); 309 if (F_ISSET(t, R_RECNO)) 310 (void)fprintf(stderr, " (%ld header count)", t->bt_nrecs); 311 (void)fprintf(stderr, 312 "\n%lu pages (leaf %ld, internal %ld, overflow %ld)\n", 313 pinternal + pleaf + pcont, pleaf, pinternal, pcont); 314 (void)fprintf(stderr, "%ld cache hits, %ld cache misses\n", 315 bt_cache_hit, bt_cache_miss); 316 (void)fprintf(stderr, "%ld splits (%ld root splits, %ld sort splits)\n", 317 bt_split, bt_rootsplit, bt_sortsplit); 318 pleaf *= t->bt_psize - BTDATAOFF; 319 if (pleaf) 320 (void)fprintf(stderr, 321 "%.0f%% leaf fill (%ld bytes used, %ld bytes free)\n", 322 ((double)(pleaf - lfree) / pleaf) * 100, 323 pleaf - lfree, lfree); 324 pinternal *= t->bt_psize - BTDATAOFF; 325 if (pinternal) 326 (void)fprintf(stderr, 327 "%.0f%% internal fill (%ld bytes used, %ld bytes free\n", 328 ((double)(pinternal - ifree) / pinternal) * 100, 329 pinternal - ifree, ifree); 330 if (bt_pfxsaved) 331 (void)fprintf(stderr, "prefix checking removed %lu bytes.\n", 332 bt_pfxsaved); 333 } 334 #endif 335
Indexes created Thu Sep 25 02:09:54 GMT 2025