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dnscache: slight refactoring

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Slight refactoring around dnscache, e.g. hostcache

- eliminate `data->state.hostcache`. Always look up
  relevant dnscache at share/multi.
- unify naming to "dnscache", replacing "hostcache"
- use `struct Curl_dnscache`, even though it just
  contains a `Curl_hash` for now.
- add `Curl_dnscache_destroy()` for cleanup in
  share/multi.

Closes #16941
This commit is contained in:
Stefan Eissing 2025-04-03 13:11:32 +02:00 • committed by Daniel Stenberg
parent 6140a574de
commit 01e76702ac
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14 changed files with 217 additions and 255 deletions
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9
lib/hostasyn.c
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@ -72,18 +72,11 @@ CURLcode Curl_addrinfo_callback(struct Curl_easy *data,
if(CURL_ASYNC_SUCCESS == status) {
if(ai) {
if(data->share)
Curl_share_lock(data, CURL_LOCK_DATA_DNS, CURL_LOCK_ACCESS_SINGLE);
dns = Curl_cache_addr(data, ai,
data->conn->host.dispname, 0,
data->state.async.port, FALSE);
if(data->share)
Curl_share_unlock(data, CURL_LOCK_DATA_DNS);
if(!dns) {
/* failed to store, cleanup and return error */
Curl_freeaddrinfo(ai);
/* failed to store, return error */
result = CURLE_OUT_OF_MEMORY;
}
}