* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
- * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
+ * Copyright (C) 1998 - 2014, 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
/* curl stuff */
#include <curl/curl.h>
+#ifdef _WIN32
+#define WAITMS(x) Sleep(x)
+#else
+/* Portable sleep for platforms other than Windows. */
+#define WAITMS(x) \
+ struct timeval wait = { 0, (x) * 1000 }; \
+ (void)select(0, NULL, NULL, NULL, &wait);
+#endif
+
/*
* Simply download a HTTP file.
*/
CURLM *multi_handle;
int still_running; /* keep number of running handles */
+ int repeats = 0;
curl_global_init(CURL_GLOBAL_DEFAULT);
curl_multi_perform(multi_handle, &still_running);
do {
- struct timeval timeout;
- int rc; /* select() return code */
-
- fd_set fdread;
- fd_set fdwrite;
- fd_set fdexcep;
- int maxfd = -1;
-
- long curl_timeo = -1;
-
- FD_ZERO(&fdread);
- FD_ZERO(&fdwrite);
- FD_ZERO(&fdexcep);
-
- /* set a suitable timeout to play around with */
- timeout.tv_sec = 1;
- timeout.tv_usec = 0;
-
- curl_multi_timeout(multi_handle, &curl_timeo);
- if(curl_timeo >= 0) {
- timeout.tv_sec = curl_timeo / 1000;
- if(timeout.tv_sec > 1)
- timeout.tv_sec = 1;
- else
- timeout.tv_usec = (curl_timeo % 1000) * 1000;
- }
+ CURLMcode mc; /* curl_multi_wait() return code */
+ int numfds;
- /* get file descriptors from the transfers */
- curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
+ /* wait for activity, timeout or "nothing" */
+ mc = curl_multi_wait(multi_handle, NULL, 0, 1000, &numfds);
- /* In a real-world program you OF COURSE check the return code of the
- function calls. On success, the value of maxfd is guaranteed to be
- greater or equal than -1. We call select(maxfd + 1, ...), specially in
- case of (maxfd == -1), we call select(0, ...), which is basically equal
- to sleep. */
+ if(mc != CURLM_OK)
+ {
+ fprintf(stderr, "curl_multi_fdset() failed, code %d.\n", mc);
+ break;
+ }
- rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+ /* 'numfds' being zero means either a timeout or no file descriptors to
+ wait for. Try timeout on first occurance, then assume no file
+ descriptors and no file descriptors to wait for means wait for 100
+ milliseconds. */
- switch(rc) {
- case -1:
- /* select error */
- still_running = 0;
- printf("select() returns error, this is badness\n");
- break;
- case 0:
- default:
- /* timeout or readable/writable sockets */
- curl_multi_perform(multi_handle, &still_running);
- break;
+ if(!numfds) {
+ repeats++; /* count number of repeated zero numfds */
+ if(repeats > 1) {
+ WAITMS(100); /* sleep 100 milliseconds */
+ }
}
+ else
+ repeats = 0;
+
+ curl_multi_perform(multi_handle, &still_running);
} while(still_running);
curl_multi_remove_handle(multi_handle, http_handle);