time-keeping: keep timestamp in multi, always update

Always use curlx_now() when calling Curl_pgrs_now(data). Tests with the
"manual" updates to now proved differ more then 100ms in parallel testing.

Add `curlx_nowp()` to set current time into a struct curltime.
Add `curlx_ptimediff_ms() and friends, passing pointers.

Update documentation.

Closes #19998
This commit is contained in:
Stefan Eissing 2025-12-18 13:55:07 +01:00 committed by Daniel Stenberg
parent 308c347c8b
commit b4be1f271e
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61 changed files with 471 additions and 502 deletions

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@ -90,7 +90,7 @@ CURLcode Curl_req_soft_reset(struct SingleRequest *req,
CURLcode Curl_req_start(struct SingleRequest *req,
struct Curl_easy *data)
{
req->start = data->progress.now;
req->start = *Curl_pgrs_now(data);
return Curl_req_soft_reset(req, data);
}