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authorDaniel Stenberg <daniel@haxx.se>2019-07-29 13:41:00 +0200
committerDaniel Stenberg <daniel@haxx.se>2019-08-06 09:33:29 +0200
commit02346abc32a3995299fa9c2f35b9f0a1d091b045 (patch)
treede504a328c326fc2ebef7265ddf4de7456fd56be /lib/multiif.h
parentcee7639b790f29113759f69c4a955c2ead8bff31 (diff)
downloadcurl-02346abc32a3995299fa9c2f35b9f0a1d091b045.tar.gz
curl_multi_poll: a sister to curl_multi_wait() that waits more
Repeatedly we see problems where using curl_multi_wait() is difficult or just awkward because if it has no file descriptor to wait for internally, it returns immediately and leaves it to the caller to wait for a small amount of time in order to avoid occasional busy-looping. This is often missed or misunderstood, leading to underperforming applications. This change introduces curl_multi_poll() as a replacement drop-in function that accepts the exact same set of arguments. This function works identically to curl_multi_wait() - EXCEPT - for the case when there's nothing to wait for internally, as then this function will by itself wait for a "suitable" short time before it returns. This effectiely avoids all risks of busy-looping and should also make it less likely that apps "over-wait". This also changes the curl tool to use this funtion internally when doing parallel transfers and changes curl_easy_perform() to use it internally. Closes #4163
Diffstat (limited to 'lib/multiif.h')
-rw-r--r--lib/multiif.h7
1 files changed, 0 insertions, 7 deletions
diff --git a/lib/multiif.h b/lib/multiif.h
index 57b6145eb..0755a7cd2 100644
--- a/lib/multiif.h
+++ b/lib/multiif.h
@@ -89,11 +89,4 @@ CURLMcode Curl_multi_add_perform(struct Curl_multi *multi,
struct Curl_easy *data,
struct connectdata *conn);
-CURLMcode Curl_multi_wait(struct Curl_multi *multi,
- struct curl_waitfd extra_fds[],
- unsigned int extra_nfds,
- int timeout_ms,
- int *ret,
- bool *gotsocket); /* if any socket was checked */
-
#endif /* HEADER_CURL_MULTIIF_H */