From ec1bcdcd0dd6e196303e8d9a30b3b2740e32c502 Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Mon, 10 Feb 2025 17:50:58 +0100 Subject: Minor code improvements and split into multiple c files MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- libcoopgamma_set_nonblocking.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 libcoopgamma_set_nonblocking.c (limited to 'libcoopgamma_set_nonblocking.c') diff --git a/libcoopgamma_set_nonblocking.c b/libcoopgamma_set_nonblocking.c new file mode 100644 index 0000000..91bae5a --- /dev/null +++ b/libcoopgamma_set_nonblocking.c @@ -0,0 +1,34 @@ +/* See LICENSE file for copyright and license details. */ +#include "common.h" + + +/** + * By default communication is blocking, this function + * can be used to switch between blocking and nonblocking + * + * After setting the communication to nonblocking, + * `libcoopgamma_flush`, `libcoopgamma_synchronise` and + * and request-sending functions can fail with EAGAIN and + * EWOULDBLOCK. It is safe to continue with `libcoopgamma_flush` + * (for `libcoopgamma_flush` it selfand equest-sending functions) + * or `libcoopgamma_synchronise` just like EINTR failure. + * + * @param ctx The state of the library, must be connected + * @param nonblocking Nonblocking mode? + * @return Zero on success, -1 on error + */ +int +libcoopgamma_set_nonblocking(libcoopgamma_context_t *restrict ctx, int nonblocking) +{ + int flags = fcntl(ctx->fd, F_GETFL); + if (flags == -1) + return -1; + if (nonblocking) + flags |= O_NONBLOCK; + else + flags &= ~O_NONBLOCK; + if (fcntl(ctx->fd, F_SETFL, flags) == -1) + return -1; + ctx->blocking = !nonblocking; + return 0; +} -- cgit v1.2.3-70-g09d2