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We introduce a loop in lib/multi.c around all calls to multi_runsingle() and

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simply check for CURLM_CALL_MULTI_PERFORM internally. This has the added
benefit that this goes in line with my long-term wishes to get rid of the
CURLM_CALL_MULTI_PERFORM all together from the public API.
This commit is contained in:
Daniel Stenberg
2010-02-01 21:42:44 +00:00
parent 516cf5c8dd
commit 55f1e787f3
5 changed files with 92 additions and 40 deletions
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25
docs/libcurl/curl_multi_perform.3
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@@ -22,25 +22,26 @@ changed from the previous call (or is less than the amount of easy handles
you've added to the multi handle), you know that there is one or more
transfers less "running". You can then call \fIcurl_multi_info_read(3)\fP to
get information about each individual completed transfer, and that returned
info includes CURLcode and more.
info includes CURLcode and more. If an added handle fails very quickly, it may
never be counted as a running_handle.
When \fIrunning_handles\fP is set to zero (0) on the return of this function,
there is no longer any transfers in progress.
.SH "RETURN VALUE"
CURLMcode type, general libcurl multi interface error code.
If you receive \fICURLM_CALL_MULTI_PERFORM\fP, this basically means that you
should call \fIcurl_multi_perform\fP again, before you select() on more
actions. You don't have to do it immediately, but the return code means that
libcurl may have more data available to return or that there may be more data
to send off before it is "satisfied". Do note that \fIcurl_multi_perform(3)\fP
will return \fICURLM_CALL_MULTI_PERFORM\fP only when it wants to be called
again \fBimmediately\fP. When things are fine and there is nothing immediate
it wants done, it'll return \fICURLM_OK\fP and you need to wait for \&"action"
and then call this function again.
Before version 7.20.0: If you receive \fICURLM_CALL_MULTI_PERFORM\fP, this
basically means that you should call \fIcurl_multi_perform\fP again, before
you select() on more actions. You don't have to do it immediately, but the
return code means that libcurl may have more data available to return or that
there may be more data to send off before it is "satisfied". Do note that
\fIcurl_multi_perform(3)\fP will return \fICURLM_CALL_MULTI_PERFORM\fP only
when it wants to be called again \fBimmediately\fP. When things are fine and
there is nothing immediate it wants done, it'll return \fICURLM_OK\fP and you
need to wait for \&"action" and then call this function again.
NOTE that this only returns errors etc regarding the whole multi stack. Problems
still might have occurred on individual transfers even when this
This function only returns errors etc regarding the whole multi stack.
Problems still might have occurred on individual transfers even when this
function returns \fICURLM_OK\fP.
.SH "TYPICAL USAGE"
Most applications will use \fIcurl_multi_fdset(3)\fP to get the multi_handle's