curl_multi_wakeup - Online Linux Manual PageSection : 3
Updated : November 26, 2021
Source : libcurl 7.82.0
Note : libcurl Manual
NAMEcurl_multi_wakeup - wakes up a sleeping curl_multi_poll call
SYNOPSIS#include <curl/curl.h>
CURLMcode curl_multi_wakeup(CURLM *multi_handle);
DESCRIPTIONThis function can be called from any thread and it wakes up a sleeping curl_multi_poll(3) call that is currently (or will be) waiting for activity or a timeout. If the function is called when there is no curl_multi_poll(3) call, it will cause the next call to return immediately. Calling this function only guarantees to wake up the current (or the next if there is no current) curl_multi_poll(3) call, which means it is possible that multiple calls to this function will wake up the same waiting operation. This function has no effect on curl_multi_wait(3) calls.
EXAMPLECURL *easy_handle;
CURLM *multi_handle;
/* add the individual easy handle */
curl_multi_add_handle(multi_handle, easy_handle);
/* this is thread 1 */
do {
CURLMcode mc;
int numfds;
mc = curl_multi_perform(multi_handle, &still_running);
if(mc == CURLM_OK) {
/* wait for activity, timeout or wakeup */
mc = curl_multi_poll(multi_handle, NULL, 0, 10000, &numfds);
}
if(time_to_die())
exit(1);
} while(still_running);
curl_multi_remove_handle(multi_handle, easy_handle);
/* this is thread 2 */
if(something makes us decide to stop thread 1) {
set_something_to_signal_thread_1_to_exit();
curl_multi_wakeup(multi_handle);
}
AVAILABILITYAdded in 7.68.0
RETURN VALUECURLMcode type, general libcurl multi interface error code.
SEE ALSOcurl_multi_poll(3), curl_multi_wait (3)" 0
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