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authorDaniel Stenberg <daniel@haxx.se>2015-06-02 12:13:23 +0200
committerDaniel Stenberg <daniel@haxx.se>2015-06-02 12:13:23 +0200
commit46a050e9f5070e95c0d5e87fe2e2eeaab7797639 (patch)
treec1fa38d8d398ce6ffc510c75dcae4f4f944cc199 /docs
parent3cac8c90498bf156233c79034e0866ea2ee45b52 (diff)
curl_multi_perform.3: added example
Diffstat (limited to 'docs')
-rw-r--r--docs/libcurl/curl_multi_perform.351
1 files changed, 50 insertions, 1 deletions
diff --git a/docs/libcurl/curl_multi_perform.3 b/docs/libcurl/curl_multi_perform.3
index e0e5b02d8..3ec1fadec 100644
--- a/docs/libcurl/curl_multi_perform.3
+++ b/docs/libcurl/curl_multi_perform.3
@@ -5,7 +5,7 @@
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
-.\" * Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2015, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
@@ -49,6 +49,55 @@ 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 EXAMPLE
+.nf
+#ifdef _WIN32
+#define SHORT_SLEEP Sleep(100)
+#else
+#define SHORT_SLEEP usleep(100000)
+#endif
+
+fd_set fdread;
+fd_set fdwrite;
+fd_set fdexcep;
+int maxfd = -1;
+
+long curl_timeo;
+
+curl_multi_timeout(multi_handle, &curl_timeo);
+if(curl_timeo < 0)
+ curl_timeo = 1000;
+
+timeout.tv_sec = curl_timeo / 1000;
+timeout.tv_usec = (curl_timeo % 1000) * 1000;
+
+FD_ZERO(&fdread);
+FD_ZERO(&fdwrite);
+FD_ZERO(&fdexcep);
+
+/* get file descriptors from the transfers */
+mc = curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
+
+if(maxfd == -1) {
+ SHORT_SLEEP;
+ rc = 0;
+}
+else
+ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+
+switch(rc) {
+case -1:
+ /* select error */
+ break;
+case 0:
+default:
+ /* timeout or readable/writable sockets */
+ curl_multi_perform(multi_handle, &still_running);
+ break;
+}
+
+/* if there are still transfers, loop! */
+.fi
.SH "RETURN VALUE"
CURLMcode type, general libcurl multi interface error code.