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vquic: recv_mmsg, use fewer, but larger buffers

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Reported-by: koujaz on github
Fixes #15267
Closes #15454
This commit is contained in:
Stefan Eissing 2024-10-30 12:09:07 +01:00 • committed by Daniel Stenberg
parent 922235e56b
commit 9b863ac670
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GPG key ID: 5CC908FDB71E12C2
4 changed files with 97 additions and 12 deletions
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48
lib/multi.c
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@ -4248,6 +4248,51 @@ void Curl_multi_xfer_ulbuf_release(struct Curl_easy *data, char *buf)
data->multi->xfer_ulbuf_borrowed = FALSE;
}
CURLcode Curl_multi_xfer_sockbuf_borrow(struct Curl_easy *data,
size_t blen, char **pbuf)
{
DEBUGASSERT(data);
DEBUGASSERT(data->multi);
*pbuf = NULL;
if(!data->multi) {
failf(data, "transfer has no multi handle");
return CURLE_FAILED_INIT;
}
if(data->multi->xfer_sockbuf_borrowed) {
failf(data, "attempt to borrow xfer_sockbuf when already borrowed");
return CURLE_AGAIN;
}
if(data->multi->xfer_sockbuf && blen > data->multi->xfer_sockbuf_len) {
/* not large enough, get a new one */
free(data->multi->xfer_sockbuf);
data->multi->xfer_sockbuf = NULL;
data->multi->xfer_sockbuf_len = 0;
}
if(!data->multi->xfer_sockbuf) {
data->multi->xfer_sockbuf = malloc(blen);
if(!data->multi->xfer_sockbuf) {
failf(data, "could not allocate xfer_sockbuf of %zu bytes", blen);
return CURLE_OUT_OF_MEMORY;
}
data->multi->xfer_sockbuf_len = blen;
}
data->multi->xfer_sockbuf_borrowed = TRUE;
*pbuf = data->multi->xfer_sockbuf;
return CURLE_OK;
}
void Curl_multi_xfer_sockbuf_release(struct Curl_easy *data, char *buf)
{
(void)buf;
DEBUGASSERT(data);
DEBUGASSERT(data->multi);
DEBUGASSERT(!buf || data->multi->xfer_sockbuf == buf);
data->multi->xfer_sockbuf_borrowed = FALSE;
}
static void multi_xfer_bufs_free(struct Curl_multi *multi)
{
DEBUGASSERT(multi);
@ -4257,6 +4302,9 @@ static void multi_xfer_bufs_free(struct Curl_multi *multi)
Curl_safefree(multi->xfer_ulbuf);
multi->xfer_ulbuf_len = 0;
multi->xfer_ulbuf_borrowed = FALSE;
Curl_safefree(multi->xfer_sockbuf);
multi->xfer_sockbuf_len = 0;
multi->xfer_sockbuf_borrowed = FALSE;
}
struct Curl_easy *Curl_multi_get_handle(struct Curl_multi *multi,