nfsstat.c revision 65428
191396Stmm/* 291396Stmm * Copyright (c) 1983, 1989, 1993 391396Stmm * The Regents of the University of California. All rights reserved. 491396Stmm * 591396Stmm * This code is derived from software contributed to Berkeley by 691396Stmm * Rick Macklem at The University of Guelph. 791396Stmm * 891396Stmm * Redistribution and use in source and binary forms, with or without 991396Stmm * modification, are permitted provided that the following conditions 1091396Stmm * are met: 1191396Stmm * 1. Redistributions of source code must retain the above copyright 1291396Stmm * notice, this list of conditions and the following disclaimer. 1391396Stmm * 2. Redistributions in binary form must reproduce the above copyright 1491396Stmm * notice, this list of conditions and the following disclaimer in the 1591396Stmm * documentation and/or other materials provided with the distribution. 1691396Stmm * 3. All advertising materials mentioning features or use of this software 1791396Stmm * must display the following acknowledgement: 1891396Stmm * This product includes software developed by the University of 1991396Stmm * California, Berkeley and its contributors. 2091396Stmm * 4. Neither the name of the University nor the names of its contributors 2191396Stmm * may be used to endorse or promote products derived from this software 2291396Stmm * without specific prior written permission. 2391396Stmm * 2491396Stmm * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2591396Stmm * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2691396Stmm * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2791396Stmm * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2891396Stmm * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2991396Stmm * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 3091396Stmm * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3191396Stmm * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3291396Stmm * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3391396Stmm * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3491396Stmm * SUCH DAMAGE. 3591396Stmm */ 3691396Stmm 3791396Stmm#ifndef lint 3891396Stmmstatic char copyright[] = 3991396Stmm"@(#) Copyright (c) 1983, 1989, 1993\n\ 4091396Stmm The Regents of the University of California. All rights reserved.\n"; 4191396Stmm#endif /* not lint */ 4291396Stmm 4391396Stmm#ifndef lint 4491396Stmm#if 0 4591396Stmmstatic char sccsid[] = "@(#)nfsstat.c 8.2 (Berkeley) 3/31/95"; 4691396Stmm#endif 4791396Stmmstatic const char rcsid[] = 4891396Stmm "$FreeBSD: head/usr.bin/nfsstat/nfsstat.c 65428 2000-09-04 06:09:54Z imp $"; 4991396Stmm#endif /* not lint */ 5091396Stmm 5191396Stmm#include <sys/param.h> 5291396Stmm#include <sys/mount.h> 5391396Stmm#include <sys/time.h> 5491396Stmm#include <sys/sysctl.h> 5591396Stmm#include <nfs/rpcv2.h> 5691396Stmm#include <nfs/nfsproto.h> 5791396Stmm#include <nfs/nfs.h> 5891396Stmm#include <signal.h> 5991396Stmm#include <fcntl.h> 6091396Stmm#include <ctype.h> 6191396Stmm#include <errno.h> 6291396Stmm#include <kvm.h> 6391396Stmm#include <nlist.h> 6491396Stmm#include <unistd.h> 6591396Stmm#include <stdio.h> 6691396Stmm#include <stdlib.h> 6791396Stmm#include <string.h> 6891396Stmm#include <paths.h> 6991396Stmm#include <err.h> 7091396Stmm 7191396Stmmstruct nlist nl[] = { 7291396Stmm#define N_NFSSTAT 0 7391396Stmm { "_nfsstats" }, 7491396Stmm "", 7591396Stmm}; 7691396Stmmkvm_t *kd; 7791396Stmm 7891396Stmmstatic int deadkernel = 0; 7991396Stmmstatic int widemode = 0; 8091396Stmm 8191396Stmmvoid intpr __P((int, int)); 8291396Stmmvoid printhdr __P((int, int)); 8391396Stmmvoid sidewaysintpr __P((u_int, int, int)); 8491396Stmmvoid usage __P((void)); 8591396Stmmchar *sperc1 __P((int, int)); 8691396Stmmchar *sperc2 __P((int, int)); 8791396Stmm 8891396Stmm#define DELTA(field) (nfsstats.field - lastst.field) 8991396Stmm 9091396Stmmmain(argc, argv) 9191396Stmm int argc; 9291396Stmm char **argv; 9391396Stmm{ 9491396Stmm u_int interval; 9591396Stmm int clientOnly = -1; 9691396Stmm int serverOnly = -1; 9791396Stmm int ch; 9891396Stmm char *memf, *nlistf; 9991396Stmm char errbuf[80]; 10091396Stmm 10191396Stmm interval = 0; 10291396Stmm memf = nlistf = NULL; 10391396Stmm while ((ch = getopt(argc, argv, "csWM:N:w:")) != -1) 10491396Stmm switch(ch) { 10591396Stmm case 'M': 10691396Stmm memf = optarg; 10791396Stmm break; 10891396Stmm case 'N': 10991396Stmm nlistf = optarg; 11091396Stmm break; 11191396Stmm case 'W': 11291396Stmm widemode = 1; 11391396Stmm break; 11491396Stmm case 'w': 11591396Stmm interval = atoi(optarg); 11691396Stmm break; 11791396Stmm case 'c': 11891396Stmm clientOnly = 1; 11991396Stmm if (serverOnly < 0) 12091396Stmm serverOnly = 0; 12191396Stmm break; 12291396Stmm case 's': 12391396Stmm serverOnly = 1; 12491396Stmm if (clientOnly < 0) 12591396Stmm clientOnly = 0; 12691396Stmm break; 12791396Stmm case '?': 12891396Stmm default: 12991396Stmm usage(); 13091396Stmm } 13191396Stmm argc -= optind; 13291396Stmm argv += optind; 13391396Stmm 13491396Stmm#define BACKWARD_COMPATIBILITY 13591396Stmm#ifdef BACKWARD_COMPATIBILITY 13691396Stmm if (*argv) { 13791396Stmm interval = atoi(*argv); 13891396Stmm if (*++argv) { 13991396Stmm nlistf = *argv; 14091396Stmm if (*++argv) 14191396Stmm memf = *argv; 14291396Stmm } 14391396Stmm } 14491396Stmm#endif 14591396Stmm /* 14691396Stmm * Discard setgid privileges if not the running kernel so that bad 14791396Stmm * guys can't print interesting stuff from kernel memory. 14891396Stmm */ 14991396Stmm if (nlistf != NULL || memf != NULL) { 15091396Stmm setgid(getgid()); 15191396Stmm deadkernel = 1; 15291396Stmm 15391396Stmm if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, 15491396Stmm errbuf)) == 0) { 15591396Stmm errx(1, "kvm_openfiles: %s", errbuf); 15691396Stmm } 15791396Stmm if (kvm_nlist(kd, nl) != 0) { 15891396Stmm errx(1, "kvm_nlist: can't get names"); 15991396Stmm } 16091396Stmm } 16191396Stmm 16291396Stmm if (interval) 16391396Stmm sidewaysintpr(interval, clientOnly, serverOnly); 16491396Stmm else 16591396Stmm intpr(clientOnly, serverOnly); 16691396Stmm exit(0); 16791396Stmm} 16891396Stmm 16991396Stmm/* 17091396Stmm * Read the nfs stats using sysctl(3) for live kernels, or kvm_read 17191396Stmm * for dead ones. 17291396Stmm */ 17391396Stmmvoid 17491396Stmmreadstats(stp) 17591396Stmm struct nfsstats *stp; 17691396Stmm{ 17791396Stmm if(deadkernel) { 17891396Stmm if(kvm_read(kd, (u_long)nl[N_NFSSTAT].n_value, stp, 17991396Stmm sizeof *stp) < 0) { 18091396Stmm err(1, "kvm_read"); 18191396Stmm } 18291396Stmm } else { 18391396Stmm int name[3]; 18491396Stmm size_t buflen = sizeof *stp; 18591396Stmm struct vfsconf vfc; 18691396Stmm 18791396Stmm if (getvfsbyname("nfs", &vfc) < 0) 18891396Stmm err(1, "getvfsbyname: NFS not compiled into kernel"); 18991396Stmm name[0] = CTL_VFS; 19091396Stmm name[1] = vfc.vfc_typenum; 19191396Stmm name[2] = NFS_NFSSTATS; 19291396Stmm if (sysctl(name, 3, stp, &buflen, (void *)0, (size_t)0) < 0) { 19391396Stmm err(1, "sysctl"); 19491396Stmm } 19591396Stmm } 19691396Stmm} 19791396Stmm 19891396Stmm/* 19991396Stmm * Print a description of the nfs stats. 20091396Stmm */ 20191396Stmmvoid 20291396Stmmintpr(int clientOnly, int serverOnly) 20391396Stmm{ 20491396Stmm struct nfsstats nfsstats; 20591396Stmm 20691396Stmm readstats(&nfsstats); 20791396Stmm 20891396Stmm if (clientOnly) { 20991396Stmm printf("Client Info:\n"); 21091396Stmm printf("Rpc Counts:\n"); 21191396Stmm printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 21291396Stmm "Getattr", "Setattr", "Lookup", "Readlink", "Read", 21391396Stmm "Write", "Create", "Remove"); 21491396Stmm printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 21591396Stmm nfsstats.rpccnt[NFSPROC_GETATTR], 21691396Stmm nfsstats.rpccnt[NFSPROC_SETATTR], 21791396Stmm nfsstats.rpccnt[NFSPROC_LOOKUP], 21891396Stmm nfsstats.rpccnt[NFSPROC_READLINK], 21991396Stmm nfsstats.rpccnt[NFSPROC_READ], 22091396Stmm nfsstats.rpccnt[NFSPROC_WRITE], 22191396Stmm nfsstats.rpccnt[NFSPROC_CREATE], 22291396Stmm nfsstats.rpccnt[NFSPROC_REMOVE]); 22391396Stmm printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 22491396Stmm "Rename", "Link", "Symlink", "Mkdir", "Rmdir", 22591396Stmm "Readdir", "RdirPlus", "Access"); 22691396Stmm printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 22791396Stmm nfsstats.rpccnt[NFSPROC_RENAME], 22891396Stmm nfsstats.rpccnt[NFSPROC_LINK], 22991396Stmm nfsstats.rpccnt[NFSPROC_SYMLINK], 23091396Stmm nfsstats.rpccnt[NFSPROC_MKDIR], 23191396Stmm nfsstats.rpccnt[NFSPROC_RMDIR], 23291396Stmm nfsstats.rpccnt[NFSPROC_READDIR], 23391396Stmm nfsstats.rpccnt[NFSPROC_READDIRPLUS], 23491396Stmm nfsstats.rpccnt[NFSPROC_ACCESS]); 23591396Stmm printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 23691396Stmm "Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit", 23791396Stmm "GLease", "Vacate", "Evict"); 23891396Stmm printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 23991396Stmm nfsstats.rpccnt[NFSPROC_MKNOD], 24091396Stmm nfsstats.rpccnt[NFSPROC_FSSTAT], 24191396Stmm nfsstats.rpccnt[NFSPROC_FSINFO], 24291396Stmm nfsstats.rpccnt[NFSPROC_PATHCONF], 24391396Stmm nfsstats.rpccnt[NFSPROC_COMMIT], 24491396Stmm nfsstats.rpccnt[NQNFSPROC_GETLEASE], 24591396Stmm nfsstats.rpccnt[NQNFSPROC_VACATED], 24691396Stmm nfsstats.rpccnt[NQNFSPROC_EVICTED]); 24791396Stmm printf("Rpc Info:\n"); 24891396Stmm printf("%9.9s %9.9s %9.9s %9.9s %9.9s\n", 24991396Stmm "TimedOut", "Invalid", "X Replies", "Retries", 25091396Stmm "Requests"); 25191396Stmm printf("%9d %9d %9d %9d %9d\n", 25291396Stmm nfsstats.rpctimeouts, 25391396Stmm nfsstats.rpcinvalid, 25491396Stmm nfsstats.rpcunexpected, 25591396Stmm nfsstats.rpcretries, 25691396Stmm nfsstats.rpcrequests); 25791396Stmm printf("Cache Info:\n"); 25891396Stmm printf("%9.9s %9.9s %9.9s %9.9s", 25991396Stmm "Attr Hits", "Misses", "Lkup Hits", "Misses"); 26091396Stmm printf(" %9.9s %9.9s %9.9s %9.9s\n", 26191396Stmm "BioR Hits", "Misses", "BioW Hits", "Misses"); 26291396Stmm printf("%9d %9d %9d %9d", 26391396Stmm nfsstats.attrcache_hits, nfsstats.attrcache_misses, 26491396Stmm nfsstats.lookupcache_hits, nfsstats.lookupcache_misses); 26591396Stmm printf(" %9d %9d %9d %9d\n", 26691396Stmm nfsstats.biocache_reads-nfsstats.read_bios, 26791396Stmm nfsstats.read_bios, 26891396Stmm nfsstats.biocache_writes-nfsstats.write_bios, 26991396Stmm nfsstats.write_bios); 27091396Stmm printf("%9.9s %9.9s %9.9s %9.9s", 27191396Stmm "BioRLHits", "Misses", "BioD Hits", "Misses"); 27291396Stmm printf(" %9.9s %9.9s\n", "DirE Hits", "Misses"); 27391396Stmm printf("%9d %9d %9d %9d", 27491396Stmm nfsstats.biocache_readlinks-nfsstats.readlink_bios, 27591396Stmm nfsstats.readlink_bios, 27691396Stmm nfsstats.biocache_readdirs-nfsstats.readdir_bios, 277 nfsstats.readdir_bios); 278 printf(" %9d %9d\n", 279 nfsstats.direofcache_hits, nfsstats.direofcache_misses); 280 } 281 if (serverOnly) { 282 printf("\nServer Info:\n"); 283 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 284 "Getattr", "Setattr", "Lookup", "Readlink", "Read", 285 "Write", "Create", "Remove"); 286 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 287 nfsstats.srvrpccnt[NFSPROC_GETATTR], 288 nfsstats.srvrpccnt[NFSPROC_SETATTR], 289 nfsstats.srvrpccnt[NFSPROC_LOOKUP], 290 nfsstats.srvrpccnt[NFSPROC_READLINK], 291 nfsstats.srvrpccnt[NFSPROC_READ], 292 nfsstats.srvrpccnt[NFSPROC_WRITE], 293 nfsstats.srvrpccnt[NFSPROC_CREATE], 294 nfsstats.srvrpccnt[NFSPROC_REMOVE]); 295 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 296 "Rename", "Link", "Symlink", "Mkdir", "Rmdir", 297 "Readdir", "RdirPlus", "Access"); 298 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 299 nfsstats.srvrpccnt[NFSPROC_RENAME], 300 nfsstats.srvrpccnt[NFSPROC_LINK], 301 nfsstats.srvrpccnt[NFSPROC_SYMLINK], 302 nfsstats.srvrpccnt[NFSPROC_MKDIR], 303 nfsstats.srvrpccnt[NFSPROC_RMDIR], 304 nfsstats.srvrpccnt[NFSPROC_READDIR], 305 nfsstats.srvrpccnt[NFSPROC_READDIRPLUS], 306 nfsstats.srvrpccnt[NFSPROC_ACCESS]); 307 printf("%9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s %9.9s\n", 308 "Mknod", "Fsstat", "Fsinfo", "PathConf", "Commit", 309 "GLease", "Vacate", "Evict"); 310 printf("%9d %9d %9d %9d %9d %9d %9d %9d\n", 311 nfsstats.srvrpccnt[NFSPROC_MKNOD], 312 nfsstats.srvrpccnt[NFSPROC_FSSTAT], 313 nfsstats.srvrpccnt[NFSPROC_FSINFO], 314 nfsstats.srvrpccnt[NFSPROC_PATHCONF], 315 nfsstats.srvrpccnt[NFSPROC_COMMIT], 316 nfsstats.srvrpccnt[NQNFSPROC_GETLEASE], 317 nfsstats.srvrpccnt[NQNFSPROC_VACATED], 318 nfsstats.srvrpccnt[NQNFSPROC_EVICTED]); 319 printf("Server Ret-Failed\n"); 320 printf("%17d\n", nfsstats.srvrpc_errs); 321 printf("Server Faults\n"); 322 printf("%13d\n", nfsstats.srv_errs); 323 printf("Server Cache Stats:\n"); 324 printf("%9.9s %9.9s %9.9s %9.9s\n", 325 "Inprog", "Idem", "Non-idem", "Misses"); 326 printf("%9d %9d %9d %9d\n", 327 nfsstats.srvcache_inproghits, 328 nfsstats.srvcache_idemdonehits, 329 nfsstats.srvcache_nonidemdonehits, 330 nfsstats.srvcache_misses); 331 printf("Server Lease Stats:\n"); 332 printf("%9.9s %9.9s %9.9s\n", 333 "Leases", "PeakL", "GLeases"); 334 printf("%9d %9d %9d\n", 335 nfsstats.srvnqnfs_leases, 336 nfsstats.srvnqnfs_maxleases, 337 nfsstats.srvnqnfs_getleases); 338 printf("Server Write Gathering:\n"); 339 printf("%9.9s %9.9s %9.9s\n", 340 "WriteOps", "WriteRPC", "Opsaved"); 341 printf("%9d %9d %9d\n", 342 nfsstats.srvvop_writes, 343 nfsstats.srvrpccnt[NFSPROC_WRITE], 344 nfsstats.srvrpccnt[NFSPROC_WRITE] - 345 nfsstats.srvvop_writes); 346 } 347} 348 349u_char signalled; /* set if alarm goes off "early" */ 350 351/* 352 * Print a running summary of nfs statistics. 353 * Repeat display every interval seconds, showing statistics 354 * collected over that interval. Assumes that interval is non-zero. 355 * First line printed at top of screen is always cumulative. 356 */ 357void 358sidewaysintpr(u_int interval, int clientOnly, int serverOnly) 359{ 360 struct nfsstats nfsstats, lastst; 361 int hdrcnt = 1; 362 363 readstats(&lastst); 364 sleep(interval); 365 366 for (;;) { 367 readstats(&nfsstats); 368 369 if (--hdrcnt == 0) { 370 printhdr(clientOnly, serverOnly); 371 if (clientOnly && serverOnly) 372 hdrcnt = 10; 373 else 374 hdrcnt = 20; 375 } 376 if (clientOnly) { 377 printf("%s %6d %6d %6d %6d %6d %6d %6d %6d", 378 ((clientOnly && serverOnly) ? "Client:" : ""), 379 DELTA(attrcache_hits) + DELTA(attrcache_misses), 380 DELTA(lookupcache_hits) + DELTA(lookupcache_misses), 381 DELTA(biocache_readlinks), 382 DELTA(biocache_reads), 383 DELTA(biocache_writes), 384 nfsstats.rpccnt[NFSPROC_RENAME]-lastst.rpccnt[NFSPROC_RENAME], 385 DELTA(accesscache_hits) + DELTA(accesscache_misses), 386 DELTA(biocache_readdirs) 387 ); 388 if (widemode) { 389 printf(" %s %s %s %s %s %s", 390 sperc1(DELTA(attrcache_hits), 391 DELTA(attrcache_misses)), 392 sperc1(DELTA(lookupcache_hits), 393 DELTA(lookupcache_misses)), 394 sperc2(DELTA(biocache_reads), 395 DELTA(read_bios)), 396 sperc2(DELTA(biocache_writes), 397 DELTA(write_bios)), 398 sperc1(DELTA(accesscache_hits), 399 DELTA(accesscache_misses)), 400 sperc2(DELTA(biocache_readdirs), 401 DELTA(readdir_bios)) 402 ); 403 } 404 printf("\n"); 405 } 406 if (serverOnly) { 407 printf("%s %6d %6d %6d %6d %6d %6d %6d %6d", 408 ((clientOnly && serverOnly) ? "Server:" : ""), 409 nfsstats.srvrpccnt[NFSPROC_GETATTR]-lastst.srvrpccnt[NFSPROC_GETATTR], 410 nfsstats.srvrpccnt[NFSPROC_LOOKUP]-lastst.srvrpccnt[NFSPROC_LOOKUP], 411 nfsstats.srvrpccnt[NFSPROC_READLINK]-lastst.srvrpccnt[NFSPROC_READLINK], 412 nfsstats.srvrpccnt[NFSPROC_READ]-lastst.srvrpccnt[NFSPROC_READ], 413 nfsstats.srvrpccnt[NFSPROC_WRITE]-lastst.srvrpccnt[NFSPROC_WRITE], 414 nfsstats.srvrpccnt[NFSPROC_RENAME]-lastst.srvrpccnt[NFSPROC_RENAME], 415 nfsstats.srvrpccnt[NFSPROC_ACCESS]-lastst.srvrpccnt[NFSPROC_ACCESS], 416 (nfsstats.srvrpccnt[NFSPROC_READDIR]-lastst.srvrpccnt[NFSPROC_READDIR]) 417 +(nfsstats.srvrpccnt[NFSPROC_READDIRPLUS]-lastst.srvrpccnt[NFSPROC_READDIRPLUS])); 418 printf("\n"); 419 } 420 lastst = nfsstats; 421 fflush(stdout); 422 sleep(interval); 423 } 424 /*NOTREACHED*/ 425} 426 427void 428printhdr(int clientOnly, int serverOnly) 429{ 430 printf("%s%6.6s %6.6s %6.6s %6.6s %6.6s %6.6s %6.6s %6.6s", 431 ((serverOnly && clientOnly) ? " " : " "), 432 "GtAttr", "Lookup", "Rdlink", "Read", "Write", "Rename", 433 "Access", "Rddir"); 434 if (widemode && clientOnly) { 435 printf(" Attr Lkup BioR BioW Accs BioD"); 436 } 437 printf("\n"); 438 fflush(stdout); 439} 440 441void 442usage() 443{ 444 (void)fprintf(stderr, 445 "usage: nfsstat [-csW] [-M core] [-N system] [-w interval]\n"); 446 exit(1); 447} 448 449static char SPBuf[64][8]; 450static int SPIndex; 451 452char * 453sperc1(int hits, int misses) 454{ 455 char *p = SPBuf[SPIndex]; 456 457 if (hits + misses) { 458 sprintf(p, "%3d%%", 459 (int)(char)((quad_t)hits * 100 / (hits + misses))); 460 } else { 461 sprintf(p, " -"); 462 } 463 SPIndex = (SPIndex + 1) & 63; 464 return(p); 465} 466 467char * 468sperc2(int ttl, int misses) 469{ 470 char *p = SPBuf[SPIndex]; 471 472 if (ttl) { 473 sprintf(p, "%3d%%", 474 (int)(char)((quad_t)(ttl - misses) * 100 / ttl)); 475 } else { 476 sprintf(p, " -"); 477 } 478 SPIndex = (SPIndex + 1) & 63; 479 return(p); 480} 481 482