/*
- Bacula® - The Network Backup Solution
-
- Copyright (C) 2003-2008 Free Software Foundation Europe e.V.
-
- The main author of Bacula is Kern Sibbald, with contributions from
- many others, a complete list can be found in the file AUTHORS.
- This program is Free Software; you can redistribute it and/or
- modify it under the terms of version two of the GNU General Public
- License as published by the Free Software Foundation and included
- in the file LICENSE.
-
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
- 02110-1301, USA.
-
- Bacula® is a registered trademark of Kern Sibbald.
- The licensor of Bacula is the Free Software Foundation Europe
- (FSFE), Fiduciary Program, Sumatrastrasse 25, 8006 Zürich,
- Switzerland, email:ftf@fsfeurope.org.
+ Bacula(R) - The Network Backup Solution
+
+ Copyright (C) 2000-2017 Kern Sibbald
+
+ The original author of Bacula is Kern Sibbald, with contributions
+ from many others, a complete list can be found in the file AUTHORS.
+
+ You may use this file and others of this release according to the
+ license defined in the LICENSE file, which includes the Affero General
+ Public License, v3.0 ("AGPLv3") and some additional permissions and
+ terms pursuant to its AGPLv3 Section 7.
+
+ This notice must be preserved when any source code is
+ conveyed and/or propagated.
+
+ Bacula(R) is a registered trademark of Kern Sibbald.
*/
/*
* Bacula hash table routines
*
* Kern Sibbald, July MMIII
*
- * Version $Id$
- *
*/
#include "bacula.h"
-
#include "htable.h"
+#define lli long long int
+static const int dbglvl = 500;
+
/* ===================================================================
* htable
*/
{
hash = 0;
for (char *p=key; *p; p++) {
-// hash += (hash << 3) + (uint32_t)*p;
hash += ((hash << 5) | (hash >> (sizeof(hash)*8-5))) + (uint32_t)*p;
}
/* Multiply by large prime number, take top bits, mask for remainder */
- index = ((hash * 1103515249) >> rshift) & mask;
- Dmsg2(500, "Leave hash_index hash=0x%x index=%d\n", hash, index);
-}
-
+ index = ((hash * 1103515249LL) >> rshift) & mask;
+ Dmsg2(dbglvl, "Leave hash_index hash=0x%x index=%d\n", hash, index);
+}
+
+void htable::hash_index(uint64_t ikey)
+{
+ hash = ikey; /* already have starting binary hash */
+ /* Same algorithm as for char * */
+ index = ((hash * 1103515249LL) >> rshift) & mask;
+ Dmsg2(dbglvl, "Leave hash_index hash=0x%x index=%d\n", hash, index);
+}
+
/*
* tsize is the estimated number of entries in the hash table
*/
{
int pwr;
- memset(this, 0, sizeof(htable));
+ bmemzero(this, sizeof(htable));
if (tsize < 31) {
tsize = 31;
}
buckets = 1<<pwr; /* hash table size -- power of two */
max_items = buckets * 4; /* allow average 4 entries per chain */
table = (hlink **)malloc(buckets * sizeof(hlink *));
- memset(table, 0, buckets * sizeof(hlink *));
+ bmemzero(table, buckets * sizeof(hlink *));
#ifdef BIG_MALLOC
malloc_big_buf(1000000); /* ***FIXME*** need variable or some estimate */
-#endif
+#endif /* BIG_MALLOC */
}
uint32_t htable::size()
printf("buckets=%d num_items=%d max_items=%d\n", buckets, num_items, max_items);
printf("max hits in a bucket = %d\n", max);
#ifdef BIG_MALLOC
- printf("total bytes malloced = %d\n", total_size);
+ printf("total bytes malloced = %lld\n", (lli)total_size);
printf("total blocks malloced = %d\n", blocks);
#endif
}
big->max_items = big->buckets * 4;
/* Create a bigger hash table */
big->table = (hlink **)malloc(big->buckets * sizeof(hlink *));
- memset(big->table, 0, big->buckets * sizeof(hlink *));
+ bmemzero(big->table, big->buckets * sizeof(hlink *));
big->walkptr = NULL;
big->walk_index = 0;
/* Insert all the items in the new hash table */
*/
for (void *item=first(); item; ) {
void *ni = ((hlink *)((char *)item+loffset))->next; /* save link overwritten by insert */
- Dmsg1(100, "Grow insert: %s\n", ((hlink *)((char *)item+loffset))->key);
- big->insert(((hlink *)((char *)item+loffset))->key, item);
+ hlink *hp = (hlink *)((char *)item+loffset);
+ if (hp->is_ikey) {
+ Dmsg1(100, "Grow insert: %lld\n", hp->key.ikey);
+ big->insert(hp->key.ikey, item);
+ } else {
+ Dmsg1(100, "Grow insert: %s\n", hp->key.key);
+ big->insert(hp->key.key, item);
+ }
if (ni) {
item = (void *)((char *)ni-loffset);
} else {
return false; /* already exists */
}
ASSERT(index < buckets);
- Dmsg2(500, "Insert: hash=%p index=%d\n", hash, index);
+ Dmsg2(dbglvl, "Insert: hash=%p index=%d\n", hash, index);
hp = (hlink *)(((char *)item)+loffset);
- Dmsg4(500, "Insert hp=%p index=%d item=%p offset=%u\n", hp,
+ Dmsg4(dbglvl, "Insert hp=%p index=%d item=%p offset=%u\n", hp,
index, item, loffset);
hp->next = table[index];
hp->hash = hash;
- hp->key = key;
+ hp->key.key = key;
+ hp->is_ikey = false;
table[index] = hp;
- Dmsg3(500, "Insert hp->next=%p hp->hash=0x%x hp->key=%s\n",
- hp->next, hp->hash, hp->key);
+ Dmsg3(dbglvl, "Insert hp->next=%p hp->hash=0x%x hp->key=%s\n",
+ hp->next, hp->hash, hp->key.key);
if (++num_items >= max_items) {
- Dmsg2(500, "num_items=%d max_items=%d\n", num_items, max_items);
+ Dmsg2(dbglvl, "num_items=%d max_items=%d\n", num_items, max_items);
grow_table();
}
- Dmsg3(500, "Leave insert index=%d num_items=%d key=%s\n", index, num_items, key);
+ Dmsg3(dbglvl, "Leave insert index=%d num_items=%d key=%s\n", index, num_items, key);
return true;
}
void *htable::lookup(char *key)
-{
- hash_index(key);
- for (hlink *hp=table[index]; hp; hp=(hlink *)hp->next) {
-// Dmsg2(100, "hp=%p key=%s\n", hp, hp->key);
- if (hash == hp->hash && strcmp(key, hp->key) == 0) {
- Dmsg1(500, "lookup return %p\n", ((char *)hp)-loffset);
- return ((char *)hp)-loffset;
- }
- }
- return NULL;
-}
-
+{
+ hash_index(key);
+ for (hlink *hp=table[index]; hp; hp=(hlink *)hp->next) {
+// Dmsg2(100, "hp=%p key=%s\n", hp, hp->key.key);
+ if (hash == hp->hash && strcmp(key, hp->key.key) == 0) {
+ Dmsg1(dbglvl, "lookup return %p\n", ((char *)hp)-loffset);
+ return ((char *)hp)-loffset;
+ }
+ }
+ return NULL;
+}
+
+bool htable::insert(uint64_t ikey, void *item)
+{
+ hlink *hp;
+ if (lookup(ikey)) {
+ return false; /* already exists */
+ }
+ ASSERT(index < buckets);
+ Dmsg2(dbglvl, "Insert: hash=%p index=%d\n", hash, index);
+ hp = (hlink *)(((char *)item)+loffset);
+ Dmsg4(dbglvl, "Insert hp=%p index=%d item=%p offset=%u\n", hp, index,
+ item, loffset);
+ hp->next = table[index];
+ hp->hash = hash;
+ hp->key.ikey = ikey;
+ hp->is_ikey = true;
+ table[index] = hp;
+ Dmsg3(dbglvl, "Insert hp->next=%p hp->hash=0x%x hp->ikey=%lld\n", hp->next,
+ hp->hash, hp->key.ikey);
+
+ if (++num_items >= max_items) {
+ Dmsg2(dbglvl, "num_items=%d max_items=%d\n", num_items, max_items);
+ grow_table();
+ }
+ Dmsg3(dbglvl, "Leave insert index=%d num_items=%d key=%lld\n",
+ index, num_items, ikey);
+ return true;
+}
+
+void *htable::lookup(uint64_t ikey)
+{
+ hash_index(ikey);
+ for (hlink *hp=table[index]; hp; hp=(hlink *)hp->next) {
+// Dmsg2(100, "hp=%p key=%lld\n", hp, hp->key.ikey);
+ if (hash == hp->hash && ikey == hp->key.ikey) {
+ Dmsg1(dbglvl, "lookup return %p\n", ((char *)hp)-loffset);
+ return ((char *)hp)-loffset;
+ }
+ }
+ return NULL;
+}
+
void *htable::next()
{
- Dmsg1(500, "Enter next: walkptr=%p\n", walkptr);
+ Dmsg1(dbglvl, "Enter next: walkptr=%p\n", walkptr);
if (walkptr) {
walkptr = (hlink *)(walkptr->next);
}
while (!walkptr && walk_index < buckets) {
walkptr = table[walk_index++];
if (walkptr) {
- Dmsg3(500, "new walkptr=%p next=%p inx=%d\n", walkptr,
+ Dmsg3(dbglvl, "new walkptr=%p next=%p inx=%d\n", walkptr,
walkptr->next, walk_index-1);
}
}
if (walkptr) {
- Dmsg2(500, "next: rtn %p walk_index=%d\n",
+ Dmsg2(dbglvl, "next: rtn %p walk_index=%d\n",
((char *)walkptr)-loffset, walk_index);
return ((char *)walkptr)-loffset;
}
- Dmsg0(500, "next: return NULL\n");
+ Dmsg0(dbglvl, "next: return NULL\n");
return NULL;
}
void *htable::first()
{
- Dmsg0(500, "Enter first\n");
+ Dmsg0(dbglvl, "Enter first\n");
walkptr = table[0]; /* get first bucket */
walk_index = 1; /* Point to next index */
while (!walkptr && walk_index < buckets) {
walkptr = table[walk_index++]; /* go to next bucket */
if (walkptr) {
- Dmsg3(500, "first new walkptr=%p next=%p inx=%d\n", walkptr,
+ Dmsg3(dbglvl, "first new walkptr=%p next=%p inx=%d\n", walkptr,
walkptr->next, walk_index-1);
}
}
if (walkptr) {
- Dmsg1(500, "Leave first walkptr=%p\n", walkptr);
+ Dmsg1(dbglvl, "Leave first walkptr=%p\n", walkptr);
return ((char *)walkptr)-loffset;
}
- Dmsg0(500, "Leave first walkptr=NULL\n");
+ Dmsg0(dbglvl, "Leave first walkptr=NULL\n");
return NULL;
}
int count = 0;
jcrtbl = (htable *)malloc(sizeof(htable));
- jcrtbl->init(jcr, &jcr->link, NITEMS);
+ jcrtbl->init(jcr, &jcr->link, NITEMS);
Dmsg1(000, "Inserting %d items\n", NITEMS);
for (int i=0; i<NITEMS; i++) {
free(jcrtbl);
printf("Freed jcrtbl\n");
- sm_dump(false);
+ sm_dump(false); /* unit test */
}
#endif
projects / bacula / bacula / blobdiff