M-Labs/artiq-zynq
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runtime/rpc: optimizations for list and arrays

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Requires https://github.com/m-labs/artiq/pull/1510
This is the commit producing the result in the table.
This commit is contained in:
pca006132 2020-08-24 16:20:42 +08:00
parent 71427f8ec8
commit d474cf58a5
1 changed files with 136 additions and 14 deletions
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150
src/runtime/src/rpc.rs
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@ -2,6 +2,7 @@ use core::str;
use core::future::Future;
use cslice::{CSlice, CMutSlice};
use log::trace;
use byteorder::{NetworkEndian, ByteOrder};
use core_io::{Write, Error};
use libboard_zynq::smoltcp;
@ -76,14 +77,40 @@ async unsafe fn recv_value<F>(stream: &TcpStream, tag: Tag<'async_recursion>, da
#[repr(C)]
struct List { elements: *mut (), length: u32 };
consume_value!(List, |ptr| {
(*ptr).length = proto_async::read_i32(stream).await? as u32;
let length = proto_async::read_i32(stream).await? as usize;
(*ptr).length = length as u32;
let tag = it.clone().next().expect("truncated tag");
(*ptr).elements = alloc(tag.size() * (*ptr).length as usize).await;
let mut data = alloc(tag.size() * length as usize).await;
let mut data = (*ptr).elements;
for _ in 0..(*ptr).length as usize {
recv_value(stream, tag, &mut data, alloc).await?
(*ptr).elements = data;
match tag {
Tag::Bool => {
let ptr = align_ptr_mut::<u8>(data);
let dest = core::slice::from_raw_parts_mut(ptr, length);
proto_async::read_chunk(stream, dest).await?;
},
Tag::Int32 => {
let ptr = align_ptr_mut::<u32>(data);
// reading as raw bytes and do endianness conversion later
let dest = core::slice::from_raw_parts_mut(ptr as *mut u8, length * 4);
proto_async::read_chunk(stream, dest).await?;
drop(dest);
let dest = core::slice::from_raw_parts_mut(ptr, length);
NetworkEndian::from_slice_u32(dest);
},
Tag::Int64 | Tag::Float64 => {
let ptr = align_ptr_mut::<u64>(data);
let dest = core::slice::from_raw_parts_mut(ptr as *mut u8, length * 8);
proto_async::read_chunk(stream, dest).await?;
drop(dest);
let dest = core::slice::from_raw_parts_mut(ptr, length);
NetworkEndian::from_slice_u64(dest);
},
_ => {
for _ in 0..(*ptr).length as usize {
recv_value(stream, tag, &mut data, alloc).await?
}
}
}
Ok(())
})
@ -100,9 +127,35 @@ async unsafe fn recv_value<F>(stream: &TcpStream, tag: Tag<'async_recursion>, da
let elt_tag = it.clone().next().expect("truncated tag");
*buffer = alloc(elt_tag.size() * total_len as usize).await;
let length = total_len as usize;
let mut data = *buffer;
for _ in 0..total_len {
recv_value(stream, elt_tag, &mut data, alloc).await?
match elt_tag {
Tag::Bool => {
let ptr = align_ptr_mut::<u8>(data);
let dest = core::slice::from_raw_parts_mut(ptr, length);
proto_async::read_chunk(stream, dest).await?;
},
Tag::Int32 => {
let ptr = align_ptr_mut::<u32>(data);
let dest = core::slice::from_raw_parts_mut(ptr as *mut u8, length * 4);
proto_async::read_chunk(stream, dest).await?;
drop(dest);
let dest = core::slice::from_raw_parts_mut(ptr, length);
NetworkEndian::from_slice_u32(dest);
},
Tag::Int64 | Tag::Float64 => {
let ptr = align_ptr_mut::<u64>(data);
let dest = core::slice::from_raw_parts_mut(ptr as *mut u8, length * 8);
proto_async::read_chunk(stream, dest).await?;
drop(dest);
let dest = core::slice::from_raw_parts_mut(ptr, length);
NetworkEndian::from_slice_u64(dest);
},
_ => {
for _ in 0..length {
recv_value(stream, elt_tag, &mut data, alloc).await?
}
}
}
Ok(())
})
@ -177,12 +230,47 @@ unsafe fn send_value<W>(writer: &mut W, tag: Tag, data: &mut *const ())
#[repr(C)]
struct List { elements: *const (), length: u32 };
consume_value!(List, |ptr| {
let length = (*ptr).length as isize;
writer.write_u32((*ptr).length)?;
let tag = it.clone().next().expect("truncated tag");
let mut data = (*ptr).elements;
for _ in 0..(*ptr).length as usize {
send_value(writer, tag, &mut data)?;
}
writer.write_u8(tag.as_u8())?;
match tag {
Tag::Bool => {
// we can pretend this is u8...
let ptr1 = align_ptr::<u8>(data);
let slice = core::slice::from_raw_parts(ptr1, length as usize);
writer.write_all(slice)?;
},
Tag::Int32 => {
let ptr1 = align_ptr::<i32>(data);
let slice = core::slice::from_raw_parts(ptr1, length as usize);
let mut v: alloc::vec::Vec<i32> = slice.to_vec();
NetworkEndian::from_slice_i32(&mut v);
let slice2 = core::slice::from_raw_parts(
v.as_ptr() as usize as *const u8,
length as usize * 4
);
writer.write_all(slice2)?;
},
Tag::Int64 | Tag::Float64 => {
let ptr1 = align_ptr::<i64>(data);
let slice = core::slice::from_raw_parts(ptr1, length as usize);
let mut v: alloc::vec::Vec<i64> = slice.to_vec();
NetworkEndian::from_slice_i64(&mut v);
let slice2 = core::slice::from_raw_parts(
v.as_ptr() as usize as *const u8,
length as usize * 8
);
writer.write_all(slice2)?;
},
// non-primitive types, not sure if this would happen but we can handle it...
_ => {
for _ in 0..length {
send_value(writer, tag, &mut data)?;
}
}
};
Ok(())
})
}
@ -199,9 +287,43 @@ unsafe fn send_value<W>(writer: &mut W, tag: Tag, data: &mut *const ())
})
}
let mut data = *buffer;
for _ in 0..total_len as usize {
send_value(writer, elt_tag, &mut data)?;
}
let length = total_len as isize;
writer.write_u8(elt_tag.as_u8())?;
match elt_tag {
Tag::Bool => {
let ptr1 = align_ptr::<u8>(data);
let slice = core::slice::from_raw_parts(ptr1, length as usize);
writer.write_all(slice)?;
},
Tag::Int32 => {
let ptr1 = align_ptr::<i32>(data);
let slice = core::slice::from_raw_parts(ptr1, length as usize);
let mut v: alloc::vec::Vec<i32> = slice.to_vec();
NetworkEndian::from_slice_i32(&mut v);
let slice2 = core::slice::from_raw_parts(
v.as_ptr() as usize as *const u8,
length as usize * 4
);
writer.write_all(slice2)?;
},
Tag::Int64 | Tag::Float64 => {
let ptr1 = align_ptr::<i64>(data);
let slice = core::slice::from_raw_parts(ptr1, length as usize);
let mut v: alloc::vec::Vec<i64> = slice.to_vec();
NetworkEndian::from_slice_i64(&mut v);
let slice2 = core::slice::from_raw_parts(
v.as_ptr() as usize as *const u8,
length as usize * 8
);
writer.write_all(slice2)?;
},
// non-primitive types, not sure if this would happen but we can handle it...
_ => {
for _ in 0..length {
send_value(writer, elt_tag, &mut data)?;
}
}
};
Ok(())
})
}