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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GPG key ID: 5CC908FDB71E12C2
61 changed files with 471 additions and 502 deletions

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@ -4980,7 +4980,7 @@ static CURLcode cr_exp100_read(struct Curl_easy *data,
DEBUGF(infof(data, "cr_exp100_read, start AWAITING_CONTINUE, "
"timeout %dms", data->set.expect_100_timeout));
ctx->state = EXP100_AWAITING_CONTINUE;
ctx->start = data->progress.now;
ctx->start = *Curl_pgrs_now(data);
Curl_expire(data, data->set.expect_100_timeout, EXPIRE_100_TIMEOUT);
*nread = 0;
*eos = FALSE;
@ -4991,7 +4991,7 @@ static CURLcode cr_exp100_read(struct Curl_easy *data,
*eos = FALSE;
return CURLE_READ_ERROR;
case EXP100_AWAITING_CONTINUE:
ms = curlx_timediff_ms(data->progress.now, ctx->start);
ms = curlx_ptimediff_ms(Curl_pgrs_now(data), &ctx->start);
if(ms < data->set.expect_100_timeout) {
DEBUGF(infof(data, "cr_exp100_read, AWAITING_CONTINUE, not expired"));
*nread = 0;