diff options
Diffstat (limited to 'docs/examples')
| -rw-r--r-- | docs/examples/fopen.c | 8 | ||||
| -rw-r--r-- | docs/examples/multi-app.c | 8 | ||||
| -rw-r--r-- | docs/examples/multi-debugcallback.c | 8 | ||||
| -rw-r--r-- | docs/examples/multi-double.c | 8 | ||||
| -rw-r--r-- | docs/examples/multi-post.c | 8 | ||||
| -rw-r--r-- | docs/examples/multi-single.c | 8 |
6 files changed, 30 insertions, 18 deletions
diff --git a/docs/examples/fopen.c b/docs/examples/fopen.c index e3814e6ab..35e24b11f 100644 --- a/docs/examples/fopen.c +++ b/docs/examples/fopen.c @@ -131,7 +131,6 @@ fill_buffer(URL_FILE *file,int want,int waittime) fd_set fdread; fd_set fdwrite; fd_set fdexcep; - int maxfd; struct timeval timeout; int rc; @@ -144,6 +143,7 @@ fill_buffer(URL_FILE *file,int want,int waittime) /* attempt to fill buffer */ do { + int maxfd = -1; FD_ZERO(&fdread); FD_ZERO(&fdwrite); FD_ZERO(&fdexcep); @@ -156,8 +156,10 @@ fill_buffer(URL_FILE *file,int want,int waittime) curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd); /* In a real-world program you OF COURSE check the return code of the - function calls, *and* you make sure that maxfd is bigger than -1 - so that the call to select() below makes sense! */ + 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. */ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout); diff --git a/docs/examples/multi-app.c b/docs/examples/multi-app.c index a86dd0efd..38b50cd0d 100644 --- a/docs/examples/multi-app.c +++ b/docs/examples/multi-app.c @@ -66,7 +66,7 @@ int main(int argc, char **argv) fd_set fdread; fd_set fdwrite; fd_set fdexcep; - int maxfd; + int maxfd = -1; FD_ZERO(&fdread); FD_ZERO(&fdwrite); @@ -80,8 +80,10 @@ int main(int argc, char **argv) curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd); /* In a real-world program you OF COURSE check the return code of the - function calls, *and* you make sure that maxfd is bigger than -1 so - that the call to select() below makes sense! */ + 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. */ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout); diff --git a/docs/examples/multi-debugcallback.c b/docs/examples/multi-debugcallback.c index b10b47cd1..8e964c67b 100644 --- a/docs/examples/multi-debugcallback.c +++ b/docs/examples/multi-debugcallback.c @@ -140,7 +140,7 @@ int main(int argc, char **argv) fd_set fdread; fd_set fdwrite; fd_set fdexcep; - int maxfd; + int maxfd = -1; FD_ZERO(&fdread); FD_ZERO(&fdwrite); @@ -154,8 +154,10 @@ int main(int argc, char **argv) curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd); /* In a real-world program you OF COURSE check the return code of the - function calls, *and* you make sure that maxfd is bigger than -1 - so that the call to select() below makes sense! */ + 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. */ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout); diff --git a/docs/examples/multi-double.c b/docs/examples/multi-double.c index ef3bf92fc..bc5b446ea 100644 --- a/docs/examples/multi-double.c +++ b/docs/examples/multi-double.c @@ -57,7 +57,7 @@ int main(int argc, char **argv) fd_set fdread; fd_set fdwrite; fd_set fdexcep; - int maxfd; + int maxfd = -1; FD_ZERO(&fdread); FD_ZERO(&fdwrite); @@ -71,8 +71,10 @@ int main(int argc, char **argv) curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd); /* In a real-world program you OF COURSE check the return code of the - function calls, *and* you make sure that maxfd is bigger than -1 so - that the call to select() below makes sense! */ + 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. */ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout); diff --git a/docs/examples/multi-post.c b/docs/examples/multi-post.c index 229e84306..0d3f78e5e 100644 --- a/docs/examples/multi-post.c +++ b/docs/examples/multi-post.c @@ -77,7 +77,7 @@ int main(int argc, char *argv[]) fd_set fdread; fd_set fdwrite; fd_set fdexcep; - int maxfd; + int maxfd = -1; FD_ZERO(&fdread); FD_ZERO(&fdwrite); @@ -91,8 +91,10 @@ int main(int argc, char *argv[]) curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd); /* In a real-world program you OF COURSE check the return code of the - function calls, *and* you make sure that maxfd is bigger than -1 - so that the call to select() below makes sense! */ + 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. */ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout); diff --git a/docs/examples/multi-single.c b/docs/examples/multi-single.c index 3e236f326..cba4f32cc 100644 --- a/docs/examples/multi-single.c +++ b/docs/examples/multi-single.c @@ -51,7 +51,7 @@ int main(int argc, char **argv) fd_set fdread; fd_set fdwrite; fd_set fdexcep; - int maxfd; + int maxfd = -1; FD_ZERO(&fdread); FD_ZERO(&fdwrite); @@ -65,8 +65,10 @@ int main(int argc, char **argv) curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd); /* In a real-world program you OF COURSE check the return code of the - function calls, *and* you make sure that maxfd is bigger than -1 so - that the call to select() below makes sense! */ + 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. */ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout); |