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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@ -266,7 +266,7 @@ static void cshutdn_terminate_all(struct cshutdn *cshutdn,
struct Curl_easy *data,
int timeout_ms)
{
struct curltime started = data->progress.now;
struct curltime started = *Curl_pgrs_now(data);
struct Curl_llist_node *e;
SIGPIPE_VARIABLE(pipe_st);
@ -289,8 +289,7 @@ static void cshutdn_terminate_all(struct cshutdn *cshutdn,
}
/* wait for activity, timeout or "nothing" */
Curl_pgrs_now_set(data); /* update in loop */
spent_ms = curlx_timediff_ms(data->progress.now, started);
spent_ms = curlx_ptimediff_ms(Curl_pgrs_now(data), &started);
if(spent_ms >= (timediff_t)timeout_ms) {
CURL_TRC_M(data, "[SHUTDOWN] shutdown finished, %s",
(timeout_ms > 0) ? "timeout" : "best effort done");