diff options
Diffstat (limited to 'tests/libtest/lib536.c')
| -rw-r--r-- | tests/libtest/lib536.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/tests/libtest/lib536.c b/tests/libtest/lib536.c index 04bc6965d..e0c19f661 100644 --- a/tests/libtest/lib536.c +++ b/tests/libtest/lib536.c @@ -21,7 +21,7 @@ static CURLMcode perform(CURLM * multi) { - int handles, maxfd; + int handles; CURLMcode code; fd_set fdread, fdwrite, fdexcep; struct timeval mp_start; @@ -31,6 +31,9 @@ static CURLMcode perform(CURLM * multi) mp_start = tutil_tvnow(); for (;;) { + static struct timeval timeout = /* 100 ms */ { 0, 100000L }; + int maxfd = -1; + code = curl_multi_perform(multi, &handles); if (tutil_tvdiff(tutil_tvnow(), mp_start) > MULTI_PERFORM_HANG_TIMEOUT) { @@ -53,9 +56,14 @@ static CURLMcode perform(CURLM * multi) FD_ZERO(&fdwrite); FD_ZERO(&fdexcep); curl_multi_fdset(multi, &fdread, &fdwrite, &fdexcep, &maxfd); - if (maxfd < 0) - return (CURLMcode) ~CURLM_OK; - if (select(maxfd + 1, &fdread, &fdwrite, &fdexcep, 0) == -1) + + /* 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 (select(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout) == -1) return (CURLMcode) ~CURLM_OK; } |