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multi: add curl_multi_wakeup()

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This commit adds curl_multi_wakeup() which was previously in the TODO
list under the curl_multi_unblock name.

On some platforms and with some configurations this feature might not be
available or can fail, in these cases a new error code
(CURLM_WAKEUP_FAILURE) is returned from curl_multi_wakeup().

Fixes #4418
Closes #4608
This commit is contained in:
Gergely Nagy 2019-11-17 15:12:15 +01:00 • committed by Daniel Stenberg
parent 0a65febccf
commit f3c35e371c
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20 changed files with 684 additions and 17 deletions
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10
include/curl/multi.h
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@ -72,6 +72,7 @@ typedef enum {
attempted to get added - again */
CURLM_RECURSIVE_API_CALL, /* an api function was called from inside a
callback */
CURLM_WAKEUP_FAILURE, /* wakeup is unavailable or failed */
CURLM_LAST
} CURLMcode;
@ -187,6 +188,15 @@ CURL_EXTERN CURLMcode curl_multi_poll(CURLM *multi_handle,
int timeout_ms,
int *ret);
/*
* Name: curl_multi_wakeup()
*
* Desc: wakes up a sleeping curl_multi_poll call.
*
* Returns: CURLMcode type, general multi error code.
*/
CURL_EXTERN CURLMcode curl_multi_wakeup(CURLM *multi_handle);
/*
* Name: curl_multi_perform()
*