NNG_OPT_RECVFD and NNG_OPT_SENDFD converted to functions.

These options are removed entirely, and their functionality is now
available via special functions, `nng_socket_get_send_poll_fd` and
`nng_socket_get_recv_poll_fd`, making these first class methods on
the socket.

This eliminates a bit of wasteful code, and provides type safety
for these methods.

1 files changed, 11 insertions, 19 deletions

diff --git a/src/sp/protocol/pipeline0/push.c b/src/sp/protocol/pipeline0/push.c
index 0bd57d0a..f99dddc3 100644
--- a/src/sp/protocol/pipeline0/push.c
+++ b/src/sp/protocol/pipeline0/push.c
@@ -364,16 +364,11 @@ push0_get_send_buf_len(void *arg, void *buf, size_t *szp, nni_opt_type t)
 }
 
 static int
-push0_sock_get_send_fd(void *arg, void *buf, size_t *szp, nni_opt_type t)
+push0_sock_get_send_fd(void *arg, int *fdp)
 {
 	push0_sock *s = arg;
-	int         rv;
-	int         fd;
 
-	if ((rv = nni_pollable_getfd(&s->writable, &fd)) != 0) {
-		return (rv);
-	}
-	return (nni_copyout_int(fd, buf, szp, t));
+	return (nni_pollable_getfd(&s->writable, fdp));
 }
 
 static nni_proto_pipe_ops push0_pipe_ops = {
@@ -387,10 +382,6 @@ static nni_proto_pipe_ops push0_pipe_ops = {
 
 static nni_option push0_sock_options[] = {
 	{
-	    .o_name = NNG_OPT_SENDFD,
-	    .o_get  = push0_sock_get_send_fd,
-	},
-	{
 	    .o_name = NNG_OPT_SENDBUF,
 	    .o_get  = push0_get_send_buf_len,
 	    .o_set  = push0_set_send_buf_len,
@@ -402,14 +393,15 @@ static nni_option push0_sock_options[] = {
 };
 
 static nni_proto_sock_ops push0_sock_ops = {
-	.sock_size    = sizeof(push0_sock),
-	.sock_init    = push0_sock_init,
-	.sock_fini    = push0_sock_fini,
-	.sock_open    = push0_sock_open,
-	.sock_close   = push0_sock_close,
-	.sock_options = push0_sock_options,
-	.sock_send    = push0_sock_send,
-	.sock_recv    = push0_sock_recv,
+	.sock_size         = sizeof(push0_sock),
+	.sock_init         = push0_sock_init,
+	.sock_fini         = push0_sock_fini,
+	.sock_open         = push0_sock_open,
+	.sock_close        = push0_sock_close,
+	.sock_options      = push0_sock_options,
+	.sock_send         = push0_sock_send,
+	.sock_recv         = push0_sock_recv,
+	.sock_send_poll_fd = push0_sock_get_send_fd,
 };
 
 static nni_proto push0_proto = {