From 96b0a8a4749f56244b9d6841de3696ab7fe1fd0e Mon Sep 17 00:00:00 2001
From: Toni Uhlig <matzeton@googlemail.com>
Date: Sun, 10 Sep 2023 19:11:58 +0200
Subject: Add event I/O abstraction.
* required to support non-Linux OS e.g. Mac OS X / BSD
* see Github issue #19
Signed-off-by: Toni Uhlig <matzeton@googlemail.com>
---
nio.h | 61 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 61 insertions(+)
create mode 100644 nio.h
(limited to 'nio.h')
diff --git a/nio.h b/nio.h
new file mode 100644
index 000000000..5ee67d883
--- /dev/null
+++ b/nio.h
@@ -0,0 +1,61 @@
+#ifndef NIO_H
+#define NIO_H 1
+
+#include <poll.h>
+
+enum
+{
+ NIO_ERROR_SUCCESS = 0,
+ NIO_ERROR_INTERNAL = 1,
+ NIO_ERROR_SYSTEM = -1
+};
+
+enum
+{
+ NIO_EVENT_INVALID = 0,
+ NIO_EVENT_INPUT = 1,
+ NIO_EVENT_OUTPUT = 2,
+ NIO_EVENT_ERROR = 3,
+};
+
+struct nio
+{
+ int nready;
+
+ nfds_t poll_max_fds;
+ nfds_t poll_cur_fds;
+ struct pollfd * poll_fds;
+ void ** poll_ptrs;
+
+ int epoll_fd;
+ int max_events;
+ void * events;
+};
+
+void nio_init(struct nio * io);
+
+int nio_use_poll(struct nio * io, nfds_t max_fds);
+
+int nio_use_epoll(struct nio * io, int max_events);
+
+int nio_add_fd(struct nio * io, int fd, int event_flags, void * ptr);
+
+int nio_mod_fd(struct nio * io, int fd, int event_flags, void * ptr);
+
+int nio_del_fd(struct nio * io, int fd);
+
+int nio_run(struct nio * io, int timeout);
+
+int nio_check(struct nio * io, int index, int events);
+
+int nio_is_valid(struct nio * io, int index);
+
+int nio_has_input(struct nio * io, int index);
+
+int nio_can_output(struct nio * io, int index);
+
+int nio_has_error(struct nio * io, int index);
+
+void nio_free(struct nio * io);
+
+#endif
--
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