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Code Issues Releases Wiki Activity

ircd: hash: channels are no longer a hashtable

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This commit is contained in:
William Pitcock 2016-01-09 23:47:50 -06:00
parent 730b914c17
commit 9b74b99268
2 changed files with 11 additions and 51 deletions
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1
include/hash.h
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@ -30,7 +30,6 @@
struct Dictionary;
struct irc_radixtree;
extern rb_dlink_list *channelTable;
extern rb_dlink_list *hostTable;
extern struct Dictionary *nd_dict;

55
ircd/hash.c
View file

@ -42,7 +42,6 @@
#include "irc_dictionary.h"
#include "irc_radixtree.h"
rb_dlink_list *channelTable;
rb_dlink_list *hostTable;
struct Dictionary *client_connid_tree = NULL;
@ -50,6 +49,7 @@ struct Dictionary *client_zconnid_tree = NULL;
struct irc_radixtree *client_id_tree = NULL;
struct irc_radixtree *client_name_tree = NULL;
struct irc_radixtree *channel_tree = NULL;
struct irc_radixtree *resv_tree = NULL;
/*
@ -63,7 +63,6 @@ struct irc_radixtree *resv_tree = NULL;
void
init_hash(void)
{
channelTable = rb_malloc(sizeof(rb_dlink_list) * CH_MAX);
hostTable = rb_malloc(sizeof(rb_dlink_list) * HOST_MAX);
client_connid_tree = irc_dictionary_create("client connid", irc_uint32cmp);
@ -71,6 +70,7 @@ init_hash(void)
client_id_tree = irc_radixtree_create("client id", NULL);
client_name_tree = irc_radixtree_create("client name", irc_radixtree_irccasecanon);
channel_tree = irc_radixtree_create("channel", irc_radixtree_irccasecanon);
resv_tree = irc_radixtree_create("resv", irc_radixtree_irccasecanon);
}
@ -134,16 +134,6 @@ fnv_hash_upper_len(const unsigned char *s, int bits, int len)
return h;
}
/* hash_channel()
*
* hashes a channel name, based on first 30 chars only for efficiency
*/
static u_int32_t
hash_channel(const char *name)
{
return fnv_hash_upper_len((const unsigned char *) name, CH_MAX_BITS, 30);
}
/* hash_hostname()
*
* hashes a hostname, based on first 30 chars only, as thats likely to
@ -254,16 +244,13 @@ del_from_client_hash(const char *name, struct Client *client_p)
void
del_from_channel_hash(const char *name, struct Channel *chptr)
{
unsigned int hashv;
s_assert(name != NULL);
s_assert(chptr != NULL);
if(EmptyString(name) || chptr == NULL)
return;
hashv = hash_channel(name);
rb_dlinkFindDestroy(chptr, &channelTable[hashv]);
irc_radixtree_delete(channel_tree, name);
}
/* del_from_hostname_hash()
@ -398,25 +385,11 @@ find_hostname(const char *hostname)
struct Channel *
find_channel(const char *name)
{
struct Channel *chptr;
rb_dlink_node *ptr;
unsigned int hashv;
s_assert(name != NULL);
if(EmptyString(name))
return NULL;
hashv = hash_channel(name);
RB_DLINK_FOREACH(ptr, channelTable[hashv].head)
{
chptr = ptr->data;
if(irccmp(name, chptr->chname) == 0)
return chptr;
}
return NULL;
return irc_radixtree_retrieve(channel_tree, name);
}
/*
@ -434,8 +407,6 @@ struct Channel *
get_or_create_channel(struct Client *client_p, const char *chname, int *isnew)
{
struct Channel *chptr;
rb_dlink_node *ptr;
unsigned int hashv;
int len;
const char *s = chname;
@ -458,30 +429,22 @@ get_or_create_channel(struct Client *client_p, const char *chname, int *isnew)
s = t;
}
hashv = hash_channel(s);
RB_DLINK_FOREACH(ptr, channelTable[hashv].head)
{
chptr = ptr->data;
if(irccmp(s, chptr->chname) == 0)
chptr = irc_radixtree_retrieve(channel_tree, s);
if (chptr != NULL)
{
if (isnew != NULL)
*isnew = 0;
return chptr;
}
}
if(isnew != NULL)
*isnew = 1;
chptr = allocate_channel(s);
rb_dlinkAdd(chptr, &chptr->node, &global_channel_list);
chptr->channelts = rb_current_time(); /* doesn't hurt to set it here */
rb_dlinkAddAlloc(chptr, &channelTable[hashv]);
rb_dlinkAdd(chptr, &chptr->node, &global_channel_list);
irc_radixtree_add(channel_tree, chptr->chname, chptr);
return chptr;
}
@ -626,7 +589,5 @@ count_hash(struct Client *source_p, rb_dlink_list *table, int length, const char
void
hash_stats(struct Client *source_p)
{
count_hash(source_p, channelTable, CH_MAX, "Channel");
sendto_one_numeric(source_p, RPL_STATSDEBUG, "B :--");
count_hash(source_p, hostTable, HOST_MAX, "Hostname");
}