From a2912d4d429a9a1a14b562bced620901d5a41b31 Mon Sep 17 00:00:00 2001 From: deraadt <> Date: Mon, 2 Jun 2014 18:52:03 +0000 Subject: [PATCH] merge ohash into 1 source file, then we can revisit next roadmap items. ok espie --- src/lib/libutil/Makefile | 9 +- src/lib/libutil/ohash.c | 327 ++++++++++++++++++++++++ src/lib/libutil/ohash.h | 9 +- src/lib/libutil/ohash_create_entry.c | 38 --- src/lib/libutil/ohash_delete.c | 30 --- src/lib/libutil/ohash_do.c | 116 --------- src/lib/libutil/ohash_entries.c | 26 -- src/lib/libutil/ohash_enum.c | 36 --- src/lib/libutil/ohash_init.c | 41 --- src/lib/libutil/ohash_int.h | 19 -- src/lib/libutil/ohash_interval.c | 36 --- src/lib/libutil/ohash_lookup_interval.c | 68 ----- src/lib/libutil/ohash_lookup_memory.c | 64 ----- src/lib/libutil/ohash_qlookup.c | 27 -- src/lib/libutil/ohash_qlookupi.c | 29 --- 15 files changed, 334 insertions(+), 541 deletions(-) create mode 100644 src/lib/libutil/ohash.c delete mode 100644 src/lib/libutil/ohash_create_entry.c delete mode 100644 src/lib/libutil/ohash_delete.c delete mode 100644 src/lib/libutil/ohash_do.c delete mode 100644 src/lib/libutil/ohash_entries.c delete mode 100644 src/lib/libutil/ohash_enum.c delete mode 100644 src/lib/libutil/ohash_init.c delete mode 100644 src/lib/libutil/ohash_int.h delete mode 100644 src/lib/libutil/ohash_interval.c delete mode 100644 src/lib/libutil/ohash_lookup_interval.c delete mode 100644 src/lib/libutil/ohash_lookup_memory.c delete mode 100644 src/lib/libutil/ohash_qlookup.c delete mode 100644 src/lib/libutil/ohash_qlookupi.c diff --git a/src/lib/libutil/Makefile b/src/lib/libutil/Makefile index 0540d61d..9a120e10 100644 --- a/src/lib/libutil/Makefile +++ b/src/lib/libutil/Makefile @@ -1,4 +1,4 @@ -# $OpenBSD: Makefile,v 1.37 2014/05/12 19:09:00 espie Exp $ +# $OpenBSD: Makefile,v 1.38 2014/06/02 18:52:03 deraadt Exp $ # $NetBSD: Makefile,v 1.8 1996/05/16 07:03:28 thorpej Exp $ LIB= util @@ -60,10 +60,8 @@ MLINKS+=uucplock.3 uu_lockerr.3 MLINKS+=uucplock.3 uu_lock_txfr.3 MLINKS+=fmt_scaled.3 scan_scaled.3 -SRCS+= ohash_create_entry.c ohash_delete.c ohash_do.c ohash_entries.c \ - ohash_enum.c ohash_init.c ohash_interval.c \ - ohash_lookup_interval.c ohash_lookup_memory.c \ - ohash_qlookup.c ohash_qlookupi.c +SRCS+= ohash.c +HDRS += ohash.h MAN += ohash_init.3 ohash_interval.3 MLINKS += ohash_init.3 ohash_delete.3 \ @@ -78,7 +76,6 @@ MLINKS += ohash_init.3 ohash_delete.3 \ ohash_interval.3 ohash_create_entry.3 \ ohash_interval.3 ohash_qlookupi.3 \ ohash_interval.3 ohash_qlookup.3 -HDRS += ohash.h includes: @cd ${.CURDIR}; for i in $(HDRS); do \ diff --git a/src/lib/libutil/ohash.c b/src/lib/libutil/ohash.c new file mode 100644 index 00000000..74ca4faf --- /dev/null +++ b/src/lib/libutil/ohash.c @@ -0,0 +1,327 @@ +/* $OpenBSD: ohash.c,v 1.1 2014/06/02 18:52:03 deraadt Exp $ */ + +/* Copyright (c) 1999, 2004 Marc Espie + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#include +#include +#include +#include +#include +#include "ohash.h" + +struct _ohash_record { + uint32_t hv; + const char *p; +}; + +#define DELETED ((const char *)h) +#define NONE (h->size) + +/* Don't bother changing the hash table if the change is small enough. */ +#define MINSIZE (1UL << 4) +#define MINDELETED 4 + +static void ohash_resize(struct ohash *); + + +/* This handles the common case of variable length keys, where the + * key is stored at the end of the record. + */ +void * +ohash_create_entry(struct ohash_info *i, const char *start, const char **end) +{ + char *p; + + if (!*end) + *end = start + strlen(start); + p = (i->alloc)(i->key_offset + (*end - start) + 1, i->data); + if (p) { + memcpy(p+i->key_offset, start, *end-start); + p[i->key_offset + (*end - start)] = '\0'; + } + return (void *)p; +} + +/* hash_delete only frees the hash structure. Use hash_first/hash_next + * to free entries as well. */ +void +ohash_delete(struct ohash *h) +{ + (h->info.free)(h->t, h->info.data); +#ifndef NDEBUG + h->t = NULL; +#endif +} + +static void +ohash_resize(struct ohash *h) +{ + struct _ohash_record *n; + size_t ns; + unsigned int j; + unsigned int i, incr; + + if (4 * h->deleted < h->total) { + if (h->size >= (UINT_MAX >> 1U)) + ns = UINT_MAX; + else + ns = h->size << 1U; + } else if (3 * h->deleted > 2 * h->total) + ns = h->size >> 1U; + else + ns = h->size; + if (ns < MINSIZE) + ns = MINSIZE; +#ifdef STATS_HASH + STAT_HASH_EXPAND++; + STAT_HASH_SIZE += ns - h->size; +#endif + + n = (h->info.calloc)(ns, sizeof(struct _ohash_record), h->info.data); + if (!n) + return; + + for (j = 0; j < h->size; j++) { + if (h->t[j].p != NULL && h->t[j].p != DELETED) { + i = h->t[j].hv % ns; + incr = ((h->t[j].hv % (ns - 2)) & ~1) + 1; + while (n[i].p != NULL) { + i += incr; + if (i >= ns) + i -= ns; + } + n[i].hv = h->t[j].hv; + n[i].p = h->t[j].p; + } + } + (h->info.free)(h->t, h->info.data); + h->t = n; + h->size = ns; + h->total -= h->deleted; + h->deleted = 0; +} + +void * +ohash_remove(struct ohash *h, unsigned int i) +{ + void *result = (void *)h->t[i].p; + + if (result == NULL || result == DELETED) + return NULL; + +#ifdef STATS_HASH + STAT_HASH_ENTRIES--; +#endif + h->t[i].p = DELETED; + h->deleted++; + if (h->deleted >= MINDELETED && 4 * h->deleted > h->total) + ohash_resize(h); + return result; +} + +void * +ohash_find(struct ohash *h, unsigned int i) +{ + if (h->t[i].p == DELETED) + return NULL; + else + return (void *)h->t[i].p; +} + +void * +ohash_insert(struct ohash *h, unsigned int i, void *p) +{ +#ifdef STATS_HASH + STAT_HASH_ENTRIES++; +#endif + if (h->t[i].p == DELETED) { + h->deleted--; + h->t[i].p = p; + } else { + h->t[i].p = p; + /* Arbitrary resize boundary. Tweak if not efficient enough. */ + if (++h->total * 4 > h->size * 3) + ohash_resize(h); + } + return p; +} + +unsigned int +ohash_entries(struct ohash *h) +{ + return h->total - h->deleted; +} + +void * +ohash_first(struct ohash *h, unsigned int *pos) +{ + *pos = 0; + return ohash_next(h, pos); +} + +void * +ohash_next(struct ohash *h, unsigned int *pos) +{ + for (; *pos < h->size; (*pos)++) + if (h->t[*pos].p != DELETED && h->t[*pos].p != NULL) + return (void *)h->t[(*pos)++].p; + return NULL; +} + +void +ohash_init(struct ohash *h, unsigned int size, struct ohash_info *info) +{ + h->size = 1UL << size; + if (h->size < MINSIZE) + h->size = MINSIZE; +#ifdef STATS_HASH + STAT_HASH_CREATION++; + STAT_HASH_SIZE += h->size; +#endif + /* Copy info so that caller may free it. */ + h->info.key_offset = info->key_offset; + h->info.calloc = info->calloc; + h->info.free = info->free; + h->info.alloc = info->alloc; + h->info.data = info->data; + h->t = (h->info.calloc)(h->size, sizeof(struct _ohash_record), + h->info.data); + h->total = h->deleted = 0; +} + +uint32_t +ohash_interval(const char *s, const char **e) +{ + uint32_t k; + + if (!*e) + *e = s + strlen(s); + if (s == *e) + k = 0; + else + k = *s++; + while (s != *e) + k = ((k << 2) | (k >> 30)) ^ *s++; + return k; +} + +unsigned int +ohash_lookup_interval(struct ohash *h, const char *start, const char *end, + uint32_t hv) +{ + unsigned int i, incr; + unsigned int empty; + +#ifdef STATS_HASH + STAT_HASH_LOOKUP++; +#endif + empty = NONE; + i = hv % h->size; + incr = ((hv % (h->size-2)) & ~1) + 1; + while (h->t[i].p != NULL) { +#ifdef STATS_HASH + STAT_HASH_LENGTH++; +#endif + if (h->t[i].p == DELETED) { + if (empty == NONE) + empty = i; + } else if (h->t[i].hv == hv && + strncmp(h->t[i].p+h->info.key_offset, start, + end - start) == 0 && + (h->t[i].p+h->info.key_offset)[end-start] == '\0') { + if (empty != NONE) { + h->t[empty].hv = hv; + h->t[empty].p = h->t[i].p; + h->t[i].p = DELETED; + return empty; + } else { +#ifdef STATS_HASH + STAT_HASH_POSITIVE++; +#endif + return i; + } + } + i += incr; + if (i >= h->size) + i -= h->size; + } + + /* Found an empty position. */ + if (empty != NONE) + i = empty; + h->t[i].hv = hv; + return i; +} + +unsigned int +ohash_lookup_memory(struct ohash *h, const char *k, size_t size, uint32_t hv) +{ + unsigned int i, incr; + unsigned int empty; + +#ifdef STATS_HASH + STAT_HASH_LOOKUP++; +#endif + empty = NONE; + i = hv % h->size; + incr = ((hv % (h->size-2)) & ~1) + 1; + while (h->t[i].p != NULL) { +#ifdef STATS_HASH + STAT_HASH_LENGTH++; +#endif + if (h->t[i].p == DELETED) { + if (empty == NONE) + empty = i; + } else if (h->t[i].hv == hv && + memcmp(h->t[i].p+h->info.key_offset, k, size) == 0) { + if (empty != NONE) { + h->t[empty].hv = hv; + h->t[empty].p = h->t[i].p; + h->t[i].p = DELETED; + return empty; + } else { +#ifdef STATS_HASH + STAT_HASH_POSITIVE++; +#endif + } return i; + } + i += incr; + if (i >= h->size) + i -= h->size; + } + + /* Found an empty position. */ + if (empty != NONE) + i = empty; + h->t[i].hv = hv; + return i; +} + +unsigned int +ohash_qlookup(struct ohash *h, const char *s) +{ + const char *e = NULL; + return ohash_qlookupi(h, s, &e); +} + +unsigned int +ohash_qlookupi(struct ohash *h, const char *s, const char **e) +{ + uint32_t hv; + + hv = ohash_interval(s, e); + return ohash_lookup_interval(h, s, *e, hv); +} diff --git a/src/lib/libutil/ohash.h b/src/lib/libutil/ohash.h index 14a27255..c5f81ec0 100644 --- a/src/lib/libutil/ohash.h +++ b/src/lib/libutil/ohash.h @@ -1,8 +1,4 @@ -#ifndef OHASH_H -#define OHASH_H -/* $OpenBSD: ohash.h,v 1.1 2014/05/12 19:09:00 espie Exp $ */ -/* ex:ts=8 sw=4: - */ +/* $OpenBSD: ohash.h,v 1.2 2014/06/02 18:52:03 deraadt Exp $ */ /* Copyright (c) 1999, 2004 Marc Espie * @@ -19,6 +15,9 @@ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ +#ifndef OHASH_H +#define OHASH_H + /* Open hashing support. * Open hashing was chosen because it is much lighter than other hash * techniques, and more efficient in most cases. diff --git a/src/lib/libutil/ohash_create_entry.c b/src/lib/libutil/ohash_create_entry.c deleted file mode 100644 index 2a5248a3..00000000 --- a/src/lib/libutil/ohash_create_entry.c +++ /dev/null @@ -1,38 +0,0 @@ -/* $OpenBSD: ohash_create_entry.c,v 1.1 2014/05/12 19:09:00 espie Exp $ */ -/* ex:ts=8 sw=4: - */ - -/* Copyright (c) 1999, 2004 Marc Espie - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "ohash_int.h" - -/* This handles the common case of variable length keys, where the - * key is stored at the end of the record. - */ -void * -ohash_create_entry(struct ohash_info *i, const char *start, const char **end) -{ - char *p; - - if (!*end) - *end = start + strlen(start); - p = (i->alloc)(i->key_offset + (*end - start) + 1, i->data); - if (p) { - memcpy(p+i->key_offset, start, *end-start); - p[i->key_offset + (*end - start)] = '\0'; - } - return (void *)p; -} diff --git a/src/lib/libutil/ohash_delete.c b/src/lib/libutil/ohash_delete.c deleted file mode 100644 index b6bb2a9b..00000000 --- a/src/lib/libutil/ohash_delete.c +++ /dev/null @@ -1,30 +0,0 @@ -/* $OpenBSD: ohash_delete.c,v 1.1 2014/05/12 19:09:00 espie Exp $ */ -/* ex:ts=8 sw=4: - */ - -/* Copyright (c) 1999, 2004 Marc Espie - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "ohash_int.h" -/* hash_delete only frees the hash structure. Use hash_first/hash_next - * to free entries as well. */ -void -ohash_delete(struct ohash *h) -{ - (h->info.free)(h->t, h->info.data); -#ifndef NDEBUG - h->t = NULL; -#endif -} diff --git a/src/lib/libutil/ohash_do.c b/src/lib/libutil/ohash_do.c deleted file mode 100644 index 0dc33672..00000000 --- a/src/lib/libutil/ohash_do.c +++ /dev/null @@ -1,116 +0,0 @@ -/* $OpenBSD: ohash_do.c,v 1.1 2014/05/12 19:09:00 espie Exp $ */ -/* ex:ts=8 sw=4: - */ - -/* Copyright (c) 1999, 2004 Marc Espie - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include -#include "ohash_int.h" - -static void ohash_resize(struct ohash *); - -static void -ohash_resize(struct ohash *h) -{ - struct _ohash_record *n; - size_t ns; - unsigned int j; - unsigned int i, incr; - - if (4 * h->deleted < h->total) { - if (h->size >= (UINT_MAX >> 1U)) - ns = UINT_MAX; - else - ns = h->size << 1U; - } else if (3 * h->deleted > 2 * h->total) - ns = h->size >> 1U; - else - ns = h->size; - if (ns < MINSIZE) - ns = MINSIZE; -#ifdef STATS_HASH - STAT_HASH_EXPAND++; - STAT_HASH_SIZE += ns - h->size; -#endif - - n = (h->info.calloc)(ns, sizeof(struct _ohash_record), h->info.data); - if (!n) - return; - - for (j = 0; j < h->size; j++) { - if (h->t[j].p != NULL && h->t[j].p != DELETED) { - i = h->t[j].hv % ns; - incr = ((h->t[j].hv % (ns - 2)) & ~1) + 1; - while (n[i].p != NULL) { - i += incr; - if (i >= ns) - i -= ns; - } - n[i].hv = h->t[j].hv; - n[i].p = h->t[j].p; - } - } - (h->info.free)(h->t, h->info.data); - h->t = n; - h->size = ns; - h->total -= h->deleted; - h->deleted = 0; -} - -void * -ohash_remove(struct ohash *h, unsigned int i) -{ - void *result = (void *)h->t[i].p; - - if (result == NULL || result == DELETED) - return NULL; - -#ifdef STATS_HASH - STAT_HASH_ENTRIES--; -#endif - h->t[i].p = DELETED; - h->deleted++; - if (h->deleted >= MINDELETED && 4 * h->deleted > h->total) - ohash_resize(h); - return result; -} - -void * -ohash_find(struct ohash *h, unsigned int i) -{ - if (h->t[i].p == DELETED) - return NULL; - else - return (void *)h->t[i].p; -} - -void * -ohash_insert(struct ohash *h, unsigned int i, void *p) -{ -#ifdef STATS_HASH - STAT_HASH_ENTRIES++; -#endif - if (h->t[i].p == DELETED) { - h->deleted--; - h->t[i].p = p; - } else { - h->t[i].p = p; - /* Arbitrary resize boundary. Tweak if not efficient enough. */ - if (++h->total * 4 > h->size * 3) - ohash_resize(h); - } - return p; -} diff --git a/src/lib/libutil/ohash_entries.c b/src/lib/libutil/ohash_entries.c deleted file mode 100644 index f6979a1c..00000000 --- a/src/lib/libutil/ohash_entries.c +++ /dev/null @@ -1,26 +0,0 @@ -/* $OpenBSD: ohash_entries.c,v 1.1 2014/05/12 19:09:00 espie Exp $ */ -/* ex:ts=8 sw=4: - */ - -/* Copyright (c) 1999, 2004 Marc Espie - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "ohash_int.h" - -unsigned int -ohash_entries(struct ohash *h) -{ - return h->total - h->deleted; -} diff --git a/src/lib/libutil/ohash_enum.c b/src/lib/libutil/ohash_enum.c deleted file mode 100644 index 616e04a2..00000000 --- a/src/lib/libutil/ohash_enum.c +++ /dev/null @@ -1,36 +0,0 @@ -/* $OpenBSD: ohash_enum.c,v 1.1 2014/05/12 19:09:00 espie Exp $ */ -/* ex:ts=8 sw=4: - */ - -/* Copyright (c) 1999, 2004 Marc Espie - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "ohash_int.h" - -void * -ohash_first(struct ohash *h, unsigned int *pos) -{ - *pos = 0; - return ohash_next(h, pos); -} - -void * -ohash_next(struct ohash *h, unsigned int *pos) -{ - for (; *pos < h->size; (*pos)++) - if (h->t[*pos].p != DELETED && h->t[*pos].p != NULL) - return (void *)h->t[(*pos)++].p; - return NULL; -} diff --git a/src/lib/libutil/ohash_init.c b/src/lib/libutil/ohash_init.c deleted file mode 100644 index ff3c8419..00000000 --- a/src/lib/libutil/ohash_init.c +++ /dev/null @@ -1,41 +0,0 @@ -/* $OpenBSD: ohash_init.c,v 1.1 2014/05/12 19:09:00 espie Exp $ */ -/* ex:ts=8 sw=4: - */ - -/* Copyright (c) 1999, 2004 Marc Espie - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "ohash_int.h" - -void -ohash_init(struct ohash *h, unsigned int size, struct ohash_info *info) -{ - h->size = 1UL << size; - if (h->size < MINSIZE) - h->size = MINSIZE; -#ifdef STATS_HASH - STAT_HASH_CREATION++; - STAT_HASH_SIZE += h->size; -#endif - /* Copy info so that caller may free it. */ - h->info.key_offset = info->key_offset; - h->info.calloc = info->calloc; - h->info.free = info->free; - h->info.alloc = info->alloc; - h->info.data = info->data; - h->t = (h->info.calloc)(h->size, sizeof(struct _ohash_record), - h->info.data); - h->total = h->deleted = 0; -} diff --git a/src/lib/libutil/ohash_int.h b/src/lib/libutil/ohash_int.h deleted file mode 100644 index 1a463dde..00000000 --- a/src/lib/libutil/ohash_int.h +++ /dev/null @@ -1,19 +0,0 @@ -/* $OpenBSD: ohash_int.h,v 1.1 2014/05/12 19:09:00 espie Exp $ */ - -#include -#include -#include -#include -#include "ohash.h" - -struct _ohash_record { - uint32_t hv; - const char *p; -}; - -#define DELETED ((const char *)h) -#define NONE (h->size) - -/* Don't bother changing the hash table if the change is small enough. */ -#define MINSIZE (1UL << 4) -#define MINDELETED 4 diff --git a/src/lib/libutil/ohash_interval.c b/src/lib/libutil/ohash_interval.c deleted file mode 100644 index c3f22275..00000000 --- a/src/lib/libutil/ohash_interval.c +++ /dev/null @@ -1,36 +0,0 @@ -/* $OpenBSD: ohash_interval.c,v 1.1 2014/05/12 19:09:00 espie Exp $ */ -/* ex:ts=8 sw=4: - */ - -/* Copyright (c) 1999, 2004 Marc Espie - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "ohash_int.h" - -uint32_t -ohash_interval(const char *s, const char **e) -{ - uint32_t k; - - if (!*e) - *e = s + strlen(s); - if (s == *e) - k = 0; - else - k = *s++; - while (s != *e) - k = ((k << 2) | (k >> 30)) ^ *s++; - return k; -} diff --git a/src/lib/libutil/ohash_lookup_interval.c b/src/lib/libutil/ohash_lookup_interval.c deleted file mode 100644 index 18cae934..00000000 --- a/src/lib/libutil/ohash_lookup_interval.c +++ /dev/null @@ -1,68 +0,0 @@ -/* $OpenBSD: ohash_lookup_interval.c,v 1.1 2014/05/12 19:09:00 espie Exp $ */ -/* ex:ts=8 sw=4: - */ - -/* Copyright (c) 1999, 2004 Marc Espie - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "ohash_int.h" - -unsigned int -ohash_lookup_interval(struct ohash *h, const char *start, const char *end, - uint32_t hv) -{ - unsigned int i, incr; - unsigned int empty; - -#ifdef STATS_HASH - STAT_HASH_LOOKUP++; -#endif - empty = NONE; - i = hv % h->size; - incr = ((hv % (h->size-2)) & ~1) + 1; - while (h->t[i].p != NULL) { -#ifdef STATS_HASH - STAT_HASH_LENGTH++; -#endif - if (h->t[i].p == DELETED) { - if (empty == NONE) - empty = i; - } else if (h->t[i].hv == hv && - strncmp(h->t[i].p+h->info.key_offset, start, - end - start) == 0 && - (h->t[i].p+h->info.key_offset)[end-start] == '\0') { - if (empty != NONE) { - h->t[empty].hv = hv; - h->t[empty].p = h->t[i].p; - h->t[i].p = DELETED; - return empty; - } else { -#ifdef STATS_HASH - STAT_HASH_POSITIVE++; -#endif - return i; - } - } - i += incr; - if (i >= h->size) - i -= h->size; - } - - /* Found an empty position. */ - if (empty != NONE) - i = empty; - h->t[i].hv = hv; - return i; -} diff --git a/src/lib/libutil/ohash_lookup_memory.c b/src/lib/libutil/ohash_lookup_memory.c deleted file mode 100644 index 650782ea..00000000 --- a/src/lib/libutil/ohash_lookup_memory.c +++ /dev/null @@ -1,64 +0,0 @@ -/* $OpenBSD: ohash_lookup_memory.c,v 1.1 2014/05/12 19:09:00 espie Exp $ */ -/* ex:ts=8 sw=4: - */ - -/* Copyright (c) 1999, 2004 Marc Espie - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "ohash_int.h" - -unsigned int -ohash_lookup_memory(struct ohash *h, const char *k, size_t size, uint32_t hv) -{ - unsigned int i, incr; - unsigned int empty; - -#ifdef STATS_HASH - STAT_HASH_LOOKUP++; -#endif - empty = NONE; - i = hv % h->size; - incr = ((hv % (h->size-2)) & ~1) + 1; - while (h->t[i].p != NULL) { -#ifdef STATS_HASH - STAT_HASH_LENGTH++; -#endif - if (h->t[i].p == DELETED) { - if (empty == NONE) - empty = i; - } else if (h->t[i].hv == hv && - memcmp(h->t[i].p+h->info.key_offset, k, size) == 0) { - if (empty != NONE) { - h->t[empty].hv = hv; - h->t[empty].p = h->t[i].p; - h->t[i].p = DELETED; - return empty; - } else { -#ifdef STATS_HASH - STAT_HASH_POSITIVE++; -#endif - } return i; - } - i += incr; - if (i >= h->size) - i -= h->size; - } - - /* Found an empty position. */ - if (empty != NONE) - i = empty; - h->t[i].hv = hv; - return i; -} diff --git a/src/lib/libutil/ohash_qlookup.c b/src/lib/libutil/ohash_qlookup.c deleted file mode 100644 index aacbbe09..00000000 --- a/src/lib/libutil/ohash_qlookup.c +++ /dev/null @@ -1,27 +0,0 @@ -/* $OpenBSD: ohash_qlookup.c,v 1.1 2014/05/12 19:09:00 espie Exp $ */ -/* ex:ts=8 sw=4: - */ - -/* Copyright (c) 1999, 2004 Marc Espie - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "ohash_int.h" - -unsigned int -ohash_qlookup(struct ohash *h, const char *s) -{ - const char *e = NULL; - return ohash_qlookupi(h, s, &e); -} diff --git a/src/lib/libutil/ohash_qlookupi.c b/src/lib/libutil/ohash_qlookupi.c deleted file mode 100644 index 287ed0ce..00000000 --- a/src/lib/libutil/ohash_qlookupi.c +++ /dev/null @@ -1,29 +0,0 @@ -/* $OpenBSD: ohash_qlookupi.c,v 1.1 2014/05/12 19:09:00 espie Exp $ */ -/* ex:ts=8 sw=4: - */ - -/* Copyright (c) 1999, 2004 Marc Espie - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES - * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR - * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES - * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN - * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF - * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. - */ - -#include "ohash_int.h" - -unsigned int -ohash_qlookupi(struct ohash *h, const char *s, const char **e) -{ - uint32_t hv; - - hv = ohash_interval(s, e); - return ohash_lookup_interval(h, s, *e, hv); -}