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added the sharing of DNS cache

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This commit is contained in:
Jean-Philippe Barette-LaPierre
2003-02-04 23:48:46 +00:00
parent fa47138327
commit beb13a1d3e
9 changed files with 121 additions and 22 deletions
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25
lib/hostip.c
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@@ -64,6 +64,7 @@
#include "sendf.h"
#include "hostip.h"
#include "hash.h"
#include "share.h"
#define _MPRINTF_REPLACE /* use our functions only */
#include <curl/mprintf.h>
@@ -211,6 +212,10 @@ void Curl_scan_cache_used(void *user, void *ptr)
#define HOSTCACHE_RETURN(dns) \
{ \
free(entry_id); \
if(data->share) \
{ \
Curl_share_unlock(data, CURL_LOCK_DATA_DNS); \
} \
return dns; \
}
@@ -245,7 +250,12 @@ struct Curl_dns_entry *Curl_resolv(struct SessionHandle *data,
/* If we can't create the entry id, fail */
if (!entry_id)
return NULL;
if(data->share)
{
Curl_share_lock(data, CURL_LOCK_DATA_DNS, CURL_LOCK_ACCESS_SINGLE);
}
/* See if its already in our dns cache */
dns = Curl_hash_pick(data->hostcache, entry_id, entry_len+1);
@@ -284,6 +294,19 @@ struct Curl_dns_entry *Curl_resolv(struct SessionHandle *data,
HOSTCACHE_RETURN(dns);
}
void Curl_resolv_unlock(struct SessionHandle *data, struct Curl_dns_entry *dns)
{
if(data->share)
{
Curl_share_lock(data, CURL_LOCK_DATA_DNS, CURL_LOCK_ACCESS_SINGLE);
}
dns->inuse--;
if(data->share)
{
Curl_share_unlock(data, CURL_LOCK_DATA_DNS);
}
}
/*
* This is a wrapper function for freeing name information in a protocol
* independent way. This takes care of using the appropriate underlaying