vendor ENet

vendor/ENet/unix.odin

@@ -0,0 +1,59 @@
+//+build linux, darwin, freebsd
+package ENet
+
+// When we implement the appropriate bindings for Unix, the section separated
+// by `{` and `}` here can be removed in favor of using the bindings.
+// {
+import "core:c"
+
+@(private="file") FD_SETSIZE :: 1024
+
+@(private="file") fd_set :: struct {
+	fds_bits: [FD_SETSIZE / 8 / size_of(c.long)]c.ulong,
+}
+
+@(private="file") FD_ZERO :: #force_inline proc(s: ^fd_set) {
+	for i := size_of(fd_set) / size_of(c.long); i != 0; i -= 1 {
+		s.fds_bits[i] = 0;
+	}
+}
+
+@(private="file") FD_SET :: #force_inline proc(d: i32, s: ^fd_set) {
+	s.fds_bits[d / (8 * size_of(c.long))] |= c.ulong(1) << (c.ulong(d) % (8 * size_of(c.ulong)))
+}
+
+@(private="file") FD_CLR :: #force_inline proc(d: i32, s: ^fd_set) {
+	s.fds_bits[d / (8 * size_of(c.long))] &= ~(c.ulong(1) << (c.ulong(d) % (8 * size_of(c.ulong))))
+}
+
+@(private="file") FD_ISSET :: #force_inline proc(d: i32, s: ^fd_set) -> bool {
+	return (s.fds_bits[d / (8 * size_of(c.long))] & c.ulong(1) << (c.ulong(d) % (8 * size_of(c.ulong)))) != 0
+}
+// }
+
+Socket :: distinct i32
+
+SOCKET_NULL :: Socket(-1)
+
+Buffer :: struct {
+	data:       rawptr,
+	dataLength: uint,
+}
+
+SocketSet :: distinct fd_set
+
+SOCKETSET_EMPTY :: #force_inline proc(sockset: ^SocketSet) {
+	FD_ZERO(cast(^fd_set)sockset)
+}
+
+SOCKETSET_ADD :: #force_inline proc(sockset: ^SocketSet, socket: Socket) {
+	FD_SET(i32(socket), cast(^fd_set)sockset)
+}
+
+SOCKETSET_REMOVE :: #force_inline proc(sockset: ^SocketSet, socket: Socket) {
+	FD_CLR(i32(socket), cast(^fd_set)sockset)
+}
+
+SOCKSET_CHECK :: #force_inline proc(sockset: ^SocketSet, socket: Socket) -> bool {
+	return FD_ISSET(i32(socket), cast(^fd_set)sockset)
+}