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thrdqueue: drop name strdups from Curl_thrdq_create

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The only usage of the thread queue and pool is for "DNS" which is a
static string. No point in strdup'ing it (twice). Future users are
*likely* to also used fixed strings, otherwise we revert this change
when dynamic names are introduced.

Reported-by: Max Dymond
Closes #22555
This commit is contained in:
Daniel Stenberg 2026-08-12 11:44:04 +02:00
parent eae88a7473
commit d064bc2adb
No known key found for this signature in database
GPG key ID: 5CC908FDB71E12C2
2 changed files with 8 additions and 10 deletions
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9
lib/thrdpool.c
View file

@ -50,7 +50,7 @@ struct thrdslot {
};
struct curl_thrdpool {
char *name;
const char *name;
uint64_t refcount;
curl_mutex_t lock;
curl_cond_t await;
@ -236,7 +236,6 @@ static bool thrdpool_unlink(struct curl_thrdpool *tpool, bool locked)
thrdpool_join_zombies(tpool);
if(locked)
Curl_mutex_release(&tpool->lock);
curlx_free(tpool->name);
Curl_cond_destroy(&tpool->await);
Curl_mutex_destroy(&tpool->lock);
curlx_free(tpool);
@ -312,6 +311,7 @@ CURLcode Curl_thrdpool_create(struct curl_thrdpool **ptpool,
{
struct curl_thrdpool *tpool;
CURLcode result = CURLE_OUT_OF_MEMORY;
DEBUGASSERT(name);
tpool = curlx_calloc(1, sizeof(*tpool));
if(!tpool)
@ -327,9 +327,8 @@ CURLcode Curl_thrdpool_create(struct curl_thrdpool **ptpool,
tpool->fn_return = fn_return;
tpool->fn_user_data = user_data;
tpool->name = curlx_strdup(name);
if(!tpool->name)
goto out;
/* a const string that remains */
tpool->name = name;
#ifdef DEBUGBUILD
{

9
lib/thrdqueue.c
View file

@ -37,7 +37,7 @@
struct curl_thrdq {
char *name;
const char *name;
curl_mutex_t lock;
curl_cond_t await;
struct Curl_llist sendq;
@ -187,7 +187,6 @@ static void thrdq_unlink(struct curl_thrdq *tqueue, bool locked, bool join)
Curl_llist_destroy(&tqueue->sendq, NULL);
Curl_llist_destroy(&tqueue->recvq, NULL);
curlx_free(tqueue->name);
Curl_cond_destroy(&tqueue->await);
if(locked)
Curl_mutex_release(&tqueue->lock);
@ -207,6 +206,7 @@ CURLcode Curl_thrdq_create(struct curl_thrdq **ptqueue,
{
struct curl_thrdq *tqueue;
CURLcode result = CURLE_OUT_OF_MEMORY;
DEBUGASSERT(name);
tqueue = curlx_calloc(1, sizeof(*tqueue));
if(!tqueue)
@ -221,9 +221,8 @@ CURLcode Curl_thrdq_create(struct curl_thrdq **ptqueue,
tqueue->fn_event = fn_event;
tqueue->fn_user_data = user_data;
tqueue->name = curlx_strdup(name);
if(!tqueue->name)
goto out;
/* a const string that remains */
tqueue->name = name;
result = Curl_thrdpool_create(&tqueue->tpool, name,
min_threads, max_threads, idle_time_ms,