mirror of
https://github.com/m-labs/artiq.git
synced 2024-12-25 03:08:27 +08:00
firmware: specialize protocol read/write functions.
Before this commit, proto::io::{read,write}_* functions were taking a &mut {Read,Write}. This means a lot of virtual dispatch. After this commit, all these functions are specialized for the specific IO trait. This could be achieved with just changing the signature from fn read_x(reader: &mut Read) to fn read_x<R: Read>(reader: &mut R) but the functions were also grouped into ReadExt and WriteExt traits as a refactoring. Initially, it was expected that the generic traits from the byteorder crate could be used, but they require endianness to be specified on every call and thus aren't very ergonomic. They also lack the equivalent to our read_string and read_bytes. Thus, it seems fine to just define a slightly different extension trait. This also optimized the test_rpc_timing test: 1.7ms→1.2ms.
This commit is contained in:
parent
de015b994d
commit
88bf7d2233
@ -126,7 +126,7 @@ extern fn rpc_send_async(service: u32, tag: CSlice<u8>, data: *const *const ())
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rpc_proto::send_args(&mut writer, service, tag.as_ref(), data)?;
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writer.position()
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};
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proto::io::write_u32(&mut slice, length as u32)
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proto::WriteExt::write_u32(&mut slice, length as u32)
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}).unwrap_or_else(|err| {
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assert!(err.kind() == std::io::ErrorKind::WriteZero);
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@ -1,5 +1,5 @@
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use std::io::{self, Write};
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use io::*;
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use WriteExt;
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#[derive(Debug)]
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pub struct Header {
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@ -12,11 +12,11 @@ pub struct Header {
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impl Header {
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pub fn write_to(&self, writer: &mut Write) -> io::Result<()> {
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write_u32(writer, self.sent_bytes)?;
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write_u64(writer, self.total_byte_count)?;
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write_u8(writer, self.overflow_occurred as u8)?;
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write_u8(writer, self.log_channel)?;
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write_u8(writer, self.dds_onehot_sel as u8)?;
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writer.write_u32(self.sent_bytes)?;
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writer.write_u64(self.total_byte_count)?;
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writer.write_u8(self.overflow_occurred as u8)?;
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writer.write_u8(self.log_channel)?;
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writer.write_u8(self.dds_onehot_sel as u8)?;
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Ok(())
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}
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}
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@ -1,75 +0,0 @@
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use std::io::{self, Read, Write};
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use std::vec::Vec;
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use std::string::String;
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use byteorder::{ByteOrder, NetworkEndian};
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// FIXME: replace these with byteorder core io traits once those are in
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pub fn read_u8(reader: &mut Read) -> io::Result<u8> {
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let mut bytes = [0; 1];
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reader.read_exact(&mut bytes)?;
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Ok(bytes[0])
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}
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pub fn write_u8(writer: &mut Write, value: u8) -> io::Result<()> {
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let bytes = [value; 1];
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writer.write_all(&bytes)
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}
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pub fn read_u16(reader: &mut Read) -> io::Result<u16> {
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let mut bytes = [0; 2];
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reader.read_exact(&mut bytes)?;
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Ok(NetworkEndian::read_u16(&bytes))
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}
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pub fn write_u16(writer: &mut Write, value: u16) -> io::Result<()> {
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let mut bytes = [0; 2];
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NetworkEndian::write_u16(&mut bytes, value);
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writer.write_all(&bytes)
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}
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pub fn read_u32(reader: &mut Read) -> io::Result<u32> {
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let mut bytes = [0; 4];
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reader.read_exact(&mut bytes)?;
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Ok(NetworkEndian::read_u32(&bytes))
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}
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pub fn write_u32(writer: &mut Write, value: u32) -> io::Result<()> {
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let mut bytes = [0; 4];
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NetworkEndian::write_u32(&mut bytes, value);
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writer.write_all(&bytes)
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}
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pub fn read_u64(reader: &mut Read) -> io::Result<u64> {
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let mut bytes = [0; 8];
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reader.read_exact(&mut bytes)?;
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Ok(NetworkEndian::read_u64(&bytes))
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}
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pub fn write_u64(writer: &mut Write, value: u64) -> io::Result<()> {
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let mut bytes = [0; 8];
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NetworkEndian::write_u64(&mut bytes, value);
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writer.write_all(&bytes)
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}
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pub fn read_bytes(reader: &mut Read) -> io::Result<Vec<u8>> {
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let length = read_u32(reader)?;
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let mut value = Vec::new();
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value.resize(length as usize, 0);
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reader.read_exact(&mut value)?;
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Ok(value)
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}
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pub fn write_bytes(writer: &mut Write, value: &[u8]) -> io::Result<()> {
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write_u32(writer, value.len() as u32)?;
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writer.write_all(value)
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}
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pub fn read_string(reader: &mut Read) -> io::Result<String> {
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let bytes = read_bytes(reader)?;
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String::from_utf8(bytes)
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.map_err(|_| io::Error::new(io::ErrorKind::InvalidData, "invalid UTF-8"))
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}
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pub fn write_string(writer: &mut Write, value: &str) -> io::Result<()> {
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write_bytes(writer, value.as_bytes())
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}
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@ -9,8 +9,6 @@ extern crate log;
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extern crate dyld;
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extern crate std_artiq as std;
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pub mod io;
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// Internal protocols.
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pub mod kernel_proto;
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@ -19,3 +17,86 @@ pub mod analyzer_proto;
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pub mod moninj_proto;
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pub mod session_proto;
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pub mod rpc_proto;
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use std::io::{Read, Write, Result, Error, ErrorKind};
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use std::vec::Vec;
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use std::string::String;
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use byteorder::{ByteOrder, NetworkEndian};
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pub trait ReadExt: Read {
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fn read_u8(&mut self) -> Result<u8> {
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let mut bytes = [0; 1];
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self.read_exact(&mut bytes)?;
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Ok(bytes[0])
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}
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fn read_u16(&mut self) -> Result<u16> {
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let mut bytes = [0; 2];
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self.read_exact(&mut bytes)?;
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Ok(NetworkEndian::read_u16(&bytes))
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}
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fn read_u32(&mut self) -> Result<u32> {
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let mut bytes = [0; 4];
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self.read_exact(&mut bytes)?;
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Ok(NetworkEndian::read_u32(&bytes))
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}
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fn read_u64(&mut self) -> Result<u64> {
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let mut bytes = [0; 8];
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self.read_exact(&mut bytes)?;
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Ok(NetworkEndian::read_u64(&bytes))
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}
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fn read_bytes(&mut self) -> Result<Vec<u8>> {
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let length = self.read_u32()?;
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let mut value = Vec::new();
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value.resize(length as usize, 0);
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self.read_exact(&mut value)?;
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Ok(value)
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}
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fn read_string(&mut self) -> Result<String> {
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let bytes = self.read_bytes()?;
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String::from_utf8(bytes)
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.map_err(|_| Error::new(ErrorKind::InvalidData, "invalid UTF-8"))
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}
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}
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impl<R: Read + ?Sized> ReadExt for R {}
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pub trait WriteExt: Write {
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fn write_u8(&mut self, value: u8) -> Result<()> {
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let bytes = [value; 1];
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self.write_all(&bytes)
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}
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fn write_u16(&mut self, value: u16) -> Result<()> {
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let mut bytes = [0; 2];
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NetworkEndian::write_u16(&mut bytes, value);
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self.write_all(&bytes)
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}
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fn write_u32(&mut self, value: u32) -> Result<()> {
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let mut bytes = [0; 4];
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NetworkEndian::write_u32(&mut bytes, value);
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self.write_all(&bytes)
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}
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fn write_u64(&mut self, value: u64) -> Result<()> {
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let mut bytes = [0; 8];
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NetworkEndian::write_u64(&mut bytes, value);
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self.write_all(&bytes)
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}
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fn write_bytes(&mut self, value: &[u8]) -> Result<()> {
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self.write_u32(value.len() as u32)?;
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self.write_all(value)
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}
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fn write_string(&mut self, value: &str) -> Result<()> {
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self.write_bytes(value.as_bytes())
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}
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}
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impl<W: Write + ?Sized> WriteExt for W {}
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@ -1,5 +1,5 @@
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use std::io::{self, Read, Write};
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use io::*;
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use {ReadExt, WriteExt};
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#[derive(Debug)]
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pub enum HostMessage {
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@ -16,20 +16,20 @@ pub enum DeviceMessage {
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impl HostMessage {
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pub fn read_from(reader: &mut Read) -> io::Result<HostMessage> {
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Ok(match read_u8(reader)? {
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Ok(match reader.read_u8()? {
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0 => HostMessage::Monitor {
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enable: if read_u8(reader)? == 0 { false } else { true },
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channel: read_u32(reader)?,
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probe: read_u8(reader)?
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enable: if reader.read_u8()? == 0 { false } else { true },
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channel: reader.read_u32()?,
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probe: reader.read_u8()?
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},
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1 => HostMessage::Inject {
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channel: read_u32(reader)?,
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overrd: read_u8(reader)?,
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value: read_u8(reader)?
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channel: reader.read_u32()?,
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overrd: reader.read_u8()?,
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value: reader.read_u8()?
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},
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2 => HostMessage::GetInjectionStatus {
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channel: read_u32(reader)?,
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overrd: read_u8(reader)?
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channel: reader.read_u32()?,
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overrd: reader.read_u8()?
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},
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_ => return Err(io::Error::new(io::ErrorKind::InvalidData, "unknown packet type"))
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})
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@ -40,16 +40,16 @@ impl DeviceMessage {
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pub fn write_to(&self, writer: &mut Write) -> io::Result<()> {
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match *self {
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DeviceMessage::MonitorStatus { channel, probe, value } => {
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write_u8(writer, 0)?;
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write_u32(writer, channel)?;
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write_u8(writer, probe)?;
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write_u32(writer, value)?;
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writer.write_u8(0)?;
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writer.write_u32(channel)?;
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writer.write_u8(probe)?;
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writer.write_u32(value)?;
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},
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DeviceMessage::InjectionStatus { channel, overrd, value } => {
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write_u8(writer, 1)?;
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write_u32(writer, channel)?;
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write_u8(writer, overrd)?;
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write_u8(writer, value)?;
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writer.write_u8(1)?;
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writer.write_u32(channel)?;
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writer.write_u8(overrd)?;
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writer.write_u8(value)?;
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}
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}
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Ok(())
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@ -1,7 +1,7 @@
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use std::io::{self, Read, Write};
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use std::str;
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use cslice::{CSlice, CMutSlice};
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use io::*;
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use {ReadExt, WriteExt};
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use self::tag::{Tag, TagIterator, split_tag};
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unsafe fn recv_value(reader: &mut Read, tag: Tag, data: &mut *mut (),
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@ -18,19 +18,19 @@ unsafe fn recv_value(reader: &mut Read, tag: Tag, data: &mut *mut (),
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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 = read_u8(reader)?; Ok(())
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*ptr = reader.read_u8()?; Ok(())
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}),
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Tag::Int32 =>
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consume_value!(u32, |ptr| {
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*ptr = read_u32(reader)?; Ok(())
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*ptr = reader.read_u32()?; 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 = read_u64(reader)?; Ok(())
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*ptr = reader.read_u64()?; Ok(())
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}),
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Tag::String => {
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consume_value!(CMutSlice<u8>, |ptr| {
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let length = read_u32(reader)? as usize;
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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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Ok(())
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@ -47,7 +47,7 @@ unsafe fn recv_value(reader: &mut Read, tag: Tag, data: &mut *mut (),
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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 = read_u32(reader)?;
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(*ptr).length = reader.read_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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@ -93,24 +93,24 @@ unsafe fn send_value(writer: &mut Write, tag: Tag, data: &mut *const ()) -> io::
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})
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}
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write_u8(writer, tag.as_u8())?;
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writer.write_u8(tag.as_u8())?;
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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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write_u8(writer, *ptr)),
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writer.write_u8(*ptr)),
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Tag::Int32 =>
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consume_value!(u32, |ptr|
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write_u32(writer, *ptr)),
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writer.write_u32(*ptr)),
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Tag::Int64 | Tag::Float64 =>
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consume_value!(u64, |ptr|
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write_u64(writer, *ptr)),
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writer.write_u64(*ptr)),
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Tag::String =>
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consume_value!(CSlice<u8>, |ptr|
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write_string(writer, str::from_utf8((*ptr).as_ref()).unwrap())),
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writer.write_string(str::from_utf8((*ptr).as_ref()).unwrap())),
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Tag::Tuple(it, arity) => {
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let mut it = it.clone();
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write_u8(writer, arity)?;
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writer.write_u8(arity)?;
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for _ in 0..arity {
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let tag = it.next().expect("truncated tag");
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send_value(writer, tag, data)?
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@ -120,7 +120,7 @@ unsafe fn send_value(writer: &mut Write, tag: Tag, data: &mut *const ()) -> io::
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Tag::List(it) | Tag::Array(it) => {
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struct List { elements: *const (), length: u32 };
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consume_value!(List, |ptr| {
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write_u32(writer, (*ptr).length)?;
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writer.write_u32((*ptr).length)?;
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let tag = it.clone().next().expect("truncated tag");
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let mut data = (*ptr).elements;
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for _ in 0..(*ptr).length as usize {
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@ -139,7 +139,7 @@ unsafe fn send_value(writer: &mut Write, tag: Tag, data: &mut *const ()) -> io::
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Tag::Keyword(it) => {
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struct Keyword<'a> { name: CSlice<'a, u8>, contents: () };
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consume_value!(Keyword, |ptr| {
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write_string(writer, str::from_utf8((*ptr).name.as_ref()).unwrap())?;
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writer.write_string(str::from_utf8((*ptr).name.as_ref()).unwrap())?;
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let tag = it.clone().next().expect("truncated tag");
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let mut data = &(*ptr).contents as *const ();
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send_value(writer, tag, &mut data)
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@ -150,7 +150,7 @@ unsafe fn send_value(writer: &mut Write, tag: Tag, data: &mut *const ()) -> io::
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Tag::Object => {
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struct Object { id: u32 };
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consume_value!(*const Object, |ptr|
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write_u32(writer, (**ptr).id))
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writer.write_u32((**ptr).id))
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}
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}
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}
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@ -166,7 +166,7 @@ pub fn send_args(writer: &mut Write, service: u32, tag_bytes: &[u8],
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trace!("send<{}>({})->{}", service, args_it, return_it);
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}
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write_u32(writer, service)?;
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writer.write_u32(service)?;
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for index in 0.. {
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if let Some(arg_tag) = args_it.next() {
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let mut data = unsafe { *data.offset(index) };
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@ -175,8 +175,8 @@ pub fn send_args(writer: &mut Write, service: u32, tag_bytes: &[u8],
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break
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}
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}
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write_u8(writer, 0)?;
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write_bytes(writer, return_tag_bytes)?;
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writer.write_u8(0)?;
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writer.write_bytes(return_tag_bytes)?;
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Ok(())
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}
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|
@ -1,12 +1,12 @@
|
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use std::io::{self, Read, Write};
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use std::vec::Vec;
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use std::string::String;
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use io::*;
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use {ReadExt, WriteExt};
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|
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fn read_sync(reader: &mut Read) -> io::Result<()> {
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let mut sync = [0; 4];
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for i in 0.. {
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sync[i % 4] = read_u8(reader)?;
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sync[i % 4] = reader.read_u8()?;
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if sync == [0x5a; 4] { break }
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}
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Ok(())
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@ -47,37 +47,37 @@ pub enum Request {
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impl Request {
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pub fn read_from(reader: &mut Read) -> io::Result<Request> {
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read_sync(reader)?;
|
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Ok(match read_u8(reader)? {
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Ok(match reader.read_u8()? {
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1 => Request::Log,
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2 => Request::LogClear,
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3 => Request::SystemInfo,
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4 => Request::SwitchClock(read_u8(reader)?),
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5 => Request::LoadKernel(read_bytes(reader)?),
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4 => Request::SwitchClock(reader.read_u8()?),
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5 => Request::LoadKernel(reader.read_bytes()?),
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6 => Request::RunKernel,
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7 => Request::RpcReply {
|
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tag: read_bytes(reader)?
|
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tag: reader.read_bytes()?
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},
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8 => Request::RpcException {
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||||
name: read_string(reader)?,
|
||||
message: read_string(reader)?,
|
||||
param: [read_u64(reader)? as i64,
|
||||
read_u64(reader)? as i64,
|
||||
read_u64(reader)? as i64],
|
||||
file: read_string(reader)?,
|
||||
line: read_u32(reader)?,
|
||||
column: read_u32(reader)?,
|
||||
function: read_string(reader)?
|
||||
name: reader.read_string()?,
|
||||
message: reader.read_string()?,
|
||||
param: [reader.read_u64()? as i64,
|
||||
reader.read_u64()? as i64,
|
||||
reader.read_u64()? as i64],
|
||||
file: reader.read_string()?,
|
||||
line: reader.read_u32()?,
|
||||
column: reader.read_u32()?,
|
||||
function: reader.read_string()?
|
||||
},
|
||||
9 => Request::FlashRead {
|
||||
key: read_string(reader)?
|
||||
key: reader.read_string()?
|
||||
},
|
||||
10 => Request::FlashWrite {
|
||||
key: read_string(reader)?,
|
||||
value: read_bytes(reader)?
|
||||
key: reader.read_string()?,
|
||||
value: reader.read_bytes()?
|
||||
},
|
||||
11 => Request::FlashErase,
|
||||
12 => Request::FlashRemove {
|
||||
key: read_string(reader)?
|
||||
key: reader.read_string()?
|
||||
},
|
||||
_ => return Err(io::Error::new(io::ErrorKind::InvalidData, "unknown request type"))
|
||||
})
|
||||
@ -126,77 +126,77 @@ impl<'a> Reply<'a> {
|
||||
write_sync(writer)?;
|
||||
match *self {
|
||||
Reply::Log(ref log) => {
|
||||
write_u8(writer, 1)?;
|
||||
write_string(writer, log)?;
|
||||
writer.write_u8(1)?;
|
||||
writer.write_string(log)?;
|
||||
},
|
||||
|
||||
Reply::SystemInfo { ident, finished_cleanly } => {
|
||||
write_u8(writer, 2)?;
|
||||
writer.write_u8(2)?;
|
||||
writer.write(b"AROR")?;
|
||||
write_string(writer, ident)?;
|
||||
write_u8(writer, finished_cleanly as u8)?;
|
||||
writer.write_string(ident)?;
|
||||
writer.write_u8(finished_cleanly as u8)?;
|
||||
},
|
||||
Reply::ClockSwitchCompleted => {
|
||||
write_u8(writer, 3)?;
|
||||
writer.write_u8(3)?;
|
||||
},
|
||||
Reply::ClockSwitchFailed => {
|
||||
write_u8(writer, 4)?;
|
||||
writer.write_u8(4)?;
|
||||
},
|
||||
|
||||
Reply::LoadCompleted => {
|
||||
write_u8(writer, 5)?;
|
||||
writer.write_u8(5)?;
|
||||
},
|
||||
Reply::LoadFailed(reason) => {
|
||||
write_u8(writer, 6)?;
|
||||
write_string(writer, reason)?;
|
||||
writer.write_u8(6)?;
|
||||
writer.write_string(reason)?;
|
||||
},
|
||||
|
||||
Reply::KernelFinished => {
|
||||
write_u8(writer, 7)?;
|
||||
writer.write_u8(7)?;
|
||||
},
|
||||
Reply::KernelStartupFailed => {
|
||||
write_u8(writer, 8)?;
|
||||
writer.write_u8(8)?;
|
||||
},
|
||||
Reply::KernelException {
|
||||
name, message, param, file, line, column, function, backtrace
|
||||
} => {
|
||||
write_u8(writer, 9)?;
|
||||
write_string(writer, name)?;
|
||||
write_string(writer, message)?;
|
||||
write_u64(writer, param[0] as u64)?;
|
||||
write_u64(writer, param[1] as u64)?;
|
||||
write_u64(writer, param[2] as u64)?;
|
||||
write_string(writer, file)?;
|
||||
write_u32(writer, line)?;
|
||||
write_u32(writer, column)?;
|
||||
write_string(writer, function)?;
|
||||
write_u32(writer, backtrace.len() as u32)?;
|
||||
writer.write_u8(9)?;
|
||||
writer.write_string(name)?;
|
||||
writer.write_string(message)?;
|
||||
writer.write_u64(param[0] as u64)?;
|
||||
writer.write_u64(param[1] as u64)?;
|
||||
writer.write_u64(param[2] as u64)?;
|
||||
writer.write_string(file)?;
|
||||
writer.write_u32(line)?;
|
||||
writer.write_u32(column)?;
|
||||
writer.write_string(function)?;
|
||||
writer.write_u32(backtrace.len() as u32)?;
|
||||
for &addr in backtrace {
|
||||
write_u32(writer, addr as u32)?
|
||||
writer.write_u32(addr as u32)?
|
||||
}
|
||||
},
|
||||
|
||||
Reply::RpcRequest { async } => {
|
||||
write_u8(writer, 10)?;
|
||||
write_u8(writer, async as u8)?;
|
||||
writer.write_u8(10)?;
|
||||
writer.write_u8(async as u8)?;
|
||||
},
|
||||
|
||||
Reply::FlashRead(ref bytes) => {
|
||||
write_u8(writer, 11)?;
|
||||
write_bytes(writer, bytes)?;
|
||||
writer.write_u8(11)?;
|
||||
writer.write_bytes(bytes)?;
|
||||
},
|
||||
Reply::FlashOk => {
|
||||
write_u8(writer, 12)?;
|
||||
writer.write_u8(12)?;
|
||||
},
|
||||
Reply::FlashError => {
|
||||
write_u8(writer, 13)?;
|
||||
writer.write_u8(13)?;
|
||||
},
|
||||
|
||||
Reply::WatchdogExpired => {
|
||||
write_u8(writer, 14)?;
|
||||
writer.write_u8(14)?;
|
||||
},
|
||||
Reply::ClockFailure => {
|
||||
write_u8(writer, 15)?;
|
||||
writer.write_u8(15)?;
|
||||
},
|
||||
}
|
||||
Ok(())
|
||||
|
@ -2,7 +2,7 @@ use std::vec::Vec;
|
||||
use std::string::String;
|
||||
use std::btree_map::BTreeMap;
|
||||
use std::mem;
|
||||
use proto::io;
|
||||
use proto::WriteExt;
|
||||
|
||||
#[derive(Debug)]
|
||||
struct Entry {
|
||||
@ -33,14 +33,14 @@ impl Manager {
|
||||
let length = /*length*/1 + /*channel*/3 + /*timestamp*/8 + /*address*/2 +
|
||||
/*data*/data.len() * 4;
|
||||
let writer = &mut self.recording;
|
||||
io::write_u8(writer, length as u8).unwrap();
|
||||
io::write_u8(writer, (channel >> 24) as u8).unwrap();
|
||||
io::write_u8(writer, (channel >> 16) as u8).unwrap();
|
||||
io::write_u8(writer, (channel >> 8) as u8).unwrap();
|
||||
io::write_u64(writer, timestamp).unwrap();
|
||||
io::write_u16(writer, address as u16).unwrap();
|
||||
writer.write_u8(length as u8).unwrap();
|
||||
writer.write_u8((channel >> 24) as u8).unwrap();
|
||||
writer.write_u8((channel >> 16) as u8).unwrap();
|
||||
writer.write_u8((channel >> 8) as u8).unwrap();
|
||||
writer.write_u64(timestamp).unwrap();
|
||||
writer.write_u16(address as u16).unwrap();
|
||||
for &word in data {
|
||||
io::write_u32(writer, word).unwrap();
|
||||
writer.write_u32(word).unwrap();
|
||||
}
|
||||
}
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user