aboutsummaryrefslogtreecommitdiff
path: root/docs/examples/pop3-multi.c
diff options
context:
space:
mode:
Diffstat (limited to 'docs/examples/pop3-multi.c')
-rw-r--r--docs/examples/pop3-multi.c20
1 files changed, 12 insertions, 8 deletions
diff --git a/docs/examples/pop3-multi.c b/docs/examples/pop3-multi.c
index 42142f954..435308623 100644
--- a/docs/examples/pop3-multi.c
+++ b/docs/examples/pop3-multi.c
@@ -120,20 +120,24 @@ int main(void)
}
/* On success the value of maxfd is guaranteed to be >= -1. We call
- select(maxfd + 1, ...); specially in case of (maxfd == -1) we call
- select(0, ...), which is basically equal to sleeping the timeout. On
- Windows we can't sleep via select without a dummy socket and instead
- we Sleep() for 100ms which is the minimum suggested value in the
+ select(maxfd + 1, ...); specially in case of (maxfd == -1) there are
+ no fds ready yet so we call select(0, ...) --or Sleep() on Windows--
+ to sleep 100ms, which is the minimum suggested value in the
curl_multi_fdset() doc. */
-#ifdef _WIN32
if(maxfd == -1) {
+#ifdef _WIN32
Sleep(100);
rc = 0;
- }
- else
+#else
+ /* Portable sleep for platforms other than Windows. */
+ struct timeval wait = { 0, 100 * 1000 }; /* 100ms */
+ rc = select(0, NULL, NULL, NULL, &wait);
#endif
- {
+ }
+ else {
+ /* Note that on some platforms 'timeout' may be modified by select().
+ If you need access to the original value save a copy beforehand. */
rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
}