forked from M-Labs/nac3
rpc: make receive async
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ef4bdbb668
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@ -51,6 +51,25 @@ pub async fn read_i32(stream: &TcpStream) -> Result<i32> {
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}).await?)
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}
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pub async fn read_i64(stream: &TcpStream) -> Result<i64> {
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Ok(stream.recv(|buf| {
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if buf.len() >= 8 {
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let value =
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((buf[0] as i64) << 56)
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| ((buf[1] as i64) << 48)
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| ((buf[2] as i64) << 40)
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| ((buf[3] as i64) << 32)
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| ((buf[4] as i64) << 24)
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| ((buf[5] as i64) << 16)
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| ((buf[6] as i64) << 8)
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| (buf[7] as i64);
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Poll::Ready((8, value))
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} else {
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Poll::Pending
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}
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}).await?)
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}
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pub async fn read_chunk(stream: &TcpStream, destination: &mut [u8]) -> Result<()> {
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let total = destination.len();
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let destination = RefCell::new(destination);
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@ -2,16 +2,17 @@ use core::str;
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use cslice::{CSlice, CMutSlice};
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use log::debug;
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use core_io::{Read, Write, Error};
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use libboard_zynq::smoltcp;
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use libasync::smoltcp::TcpStream;
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use core_io::{Write, Error};
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use crate::proto_core_io::{ProtoRead, ProtoWrite};
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use crate::proto_core_io::ProtoWrite;
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use crate::proto_async;
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use self::tag::{Tag, TagIterator, split_tag};
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unsafe fn recv_value<R, E>(reader: &mut R, tag: Tag, data: &mut *mut (),
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alloc: &dyn Fn(usize) -> Result<*mut (), E>)
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-> Result<(), E>
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where R: Read + ?Sized,
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E: From<Error>
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async unsafe fn recv_value(stream: &TcpStream, tag: Tag<'_>, data: &mut *mut (),
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alloc: &dyn Fn(usize) -> *mut ())
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-> Result<(), smoltcp::Error>
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{
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macro_rules! consume_value {
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($ty:ty, |$ptr:ident| $map:expr) => ({
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@ -24,22 +25,25 @@ unsafe fn recv_value<R, E>(reader: &mut R, tag: Tag, data: &mut *mut (),
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match tag {
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Tag::None => Ok(()),
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Tag::Bool =>
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consume_value!(u8, |ptr| {
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*ptr = reader.read_u8()?; Ok(())
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consume_value!(i8, |ptr| {
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*ptr = proto_async::read_i8(stream).await?;
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Ok(())
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}),
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Tag::Int32 =>
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consume_value!(u32, |ptr| {
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*ptr = reader.read_u32()?; Ok(())
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consume_value!(i32, |ptr| {
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*ptr = proto_async::read_i32(stream).await?;
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Ok(())
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}),
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Tag::Int64 | Tag::Float64 =>
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consume_value!(u64, |ptr| {
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*ptr = reader.read_u64()?; Ok(())
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consume_value!(i64, |ptr| {
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*ptr = proto_async::read_i64(stream).await?;
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Ok(())
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}),
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Tag::String | Tag::Bytes | Tag::ByteArray => {
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consume_value!(CMutSlice<u8>, |ptr| {
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let length = reader.read_u32()? as usize;
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*ptr = CMutSlice::new(alloc(length)? as *mut u8, length);
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reader.read_exact((*ptr).as_mut())?;
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let length = proto_async::read_i32(stream).await? as usize;
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*ptr = CMutSlice::new(alloc(length) as *mut u8, length);
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proto_async::read_chunk(stream, (*ptr).as_mut()).await?;
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Ok(())
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})
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}
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@ -47,30 +51,30 @@ unsafe fn recv_value<R, E>(reader: &mut R, tag: Tag, data: &mut *mut (),
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let mut it = it.clone();
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for _ in 0..arity {
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let tag = it.next().expect("truncated tag");
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recv_value(reader, tag, data, alloc)?
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//TODO: recv_value(reader, tag, data, alloc)?
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}
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Ok(())
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}
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Tag::List(it) | Tag::Array(it) => {
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struct List { elements: *mut (), length: u32 };
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consume_value!(List, |ptr| {
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(*ptr).length = reader.read_u32()?;
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(*ptr).length = proto_async::read_i32(stream).await? as u32;
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let tag = it.clone().next().expect("truncated tag");
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(*ptr).elements = alloc(tag.size() * (*ptr).length as usize)?;
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(*ptr).elements = alloc(tag.size() * (*ptr).length as usize);
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let mut data = (*ptr).elements;
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for _ in 0..(*ptr).length as usize {
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recv_value(reader, tag, &mut data, alloc)?
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//TODO: recv_value(reader, tag, &mut data, alloc).await?
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}
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Ok(())
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})
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}
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Tag::Range(it) => {
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let tag = it.clone().next().expect("truncated tag");
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recv_value(reader, tag, data, alloc)?;
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recv_value(reader, tag, data, alloc)?;
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recv_value(reader, tag, data, alloc)?;
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/*TODO: recv_value(reader, tag, data, alloc).await?;
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recv_value(reader, tag, data, alloc).await?;
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recv_value(reader, tag, data, alloc).await?;*/
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Ok(())
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}
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Tag::Keyword(_) => unreachable!(),
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@ -78,18 +82,16 @@ unsafe fn recv_value<R, E>(reader: &mut R, tag: Tag, data: &mut *mut (),
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}
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}
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pub fn recv_return<R, E>(reader: &mut R, tag_bytes: &[u8], data: *mut (),
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alloc: &dyn Fn(usize) -> Result<*mut (), E>)
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-> Result<(), E>
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where R: Read + ?Sized,
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E: From<Error>
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pub async fn recv_return(stream: &TcpStream, tag_bytes: &[u8], data: *mut (),
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alloc: &dyn Fn(usize) -> *mut ())
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-> Result<(), smoltcp::Error>
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{
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let mut it = TagIterator::new(tag_bytes);
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debug!("recv ...->{}", it);
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let tag = it.next().expect("truncated tag");
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let mut data = data;
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unsafe { recv_value(reader, tag, &mut data, alloc)? };
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unsafe { recv_value(stream, tag, &mut data, alloc).await? };
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Ok(())
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}
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