rust/src/libstd/sys/wasm/net.rs

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std: Add a new wasm32-unknown-unknown target This commit adds a new target to the compiler: wasm32-unknown-unknown. This target is a reimagining of what it looks like to generate WebAssembly code from Rust. Instead of using Emscripten which can bring with it a weighty runtime this instead is a target which uses only the LLVM backend for WebAssembly and a "custom linker" for now which will hopefully one day be direct calls to lld. Notable features of this target include: * There is zero runtime footprint. The target assumes nothing exists other than the wasm32 instruction set. * There is zero toolchain footprint beyond adding the target. No custom linker is needed, rustc contains everything. * Very small wasm modules can be generated directly from Rust code using this target. * Most of the standard library is stubbed out to return an error, but anything related to allocation works (aka `HashMap`, `Vec`, etc). * Naturally, any `#[no_std]` crate should be 100% compatible with this new target. This target is currently somewhat janky due to how linking works. The "linking" is currently unconditional whole program LTO (aka LLVM is being used as a linker). Naturally that means compiling programs is pretty slow! Eventually though this target should have a linker. This target is also intended to be quite experimental. I'm hoping that this can act as a catalyst for further experimentation in Rust with WebAssembly. Breaking changes are very likely to land to this target, so it's not recommended to rely on it in any critical capacity yet. We'll let you know when it's "production ready". --- Currently testing-wise this target is looking pretty good but isn't complete. I've got almost the entire `run-pass` test suite working with this target (lots of tests ignored, but many passing as well). The `core` test suite is still getting LLVM bugs fixed to get that working and will take some time. Relatively simple programs all seem to work though! --- It's worth nothing that you may not immediately see the "smallest possible wasm module" for the input you feed to rustc. For various reasons it's very difficult to get rid of the final "bloat" in vanilla rustc (again, a real linker should fix all this). For now what you'll have to do is: cargo install --git https://github.com/alexcrichton/wasm-gc wasm-gc foo.wasm bar.wasm And then `bar.wasm` should be the smallest we can get it! --- In any case for now I'd love feedback on this, particularly on the various integration points if you've got better ideas of how to approach them!
2017-10-23 03:01:00 +00:00
// Copyright 2017 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use fmt;
use io;
use net::{SocketAddr, Shutdown, Ipv4Addr, Ipv6Addr};
use time::Duration;
use sys::{unsupported, Void};
pub struct TcpStream(Void);
impl TcpStream {
pub fn connect(_: &SocketAddr) -> io::Result<TcpStream> {
unsupported()
}
pub fn connect_timeout(_: &SocketAddr, _: Duration) -> io::Result<TcpStream> {
unsupported()
}
pub fn set_read_timeout(&self, _: Option<Duration>) -> io::Result<()> {
match self.0 {}
}
pub fn set_write_timeout(&self, _: Option<Duration>) -> io::Result<()> {
match self.0 {}
}
pub fn read_timeout(&self) -> io::Result<Option<Duration>> {
match self.0 {}
}
pub fn write_timeout(&self) -> io::Result<Option<Duration>> {
match self.0 {}
}
pub fn peek(&self, _: &mut [u8]) -> io::Result<usize> {
match self.0 {}
}
pub fn read(&self, _: &mut [u8]) -> io::Result<usize> {
match self.0 {}
}
pub fn write(&self, _: &[u8]) -> io::Result<usize> {
match self.0 {}
}
pub fn peer_addr(&self) -> io::Result<SocketAddr> {
match self.0 {}
}
pub fn socket_addr(&self) -> io::Result<SocketAddr> {
match self.0 {}
}
pub fn shutdown(&self, _: Shutdown) -> io::Result<()> {
match self.0 {}
}
pub fn duplicate(&self) -> io::Result<TcpStream> {
match self.0 {}
}
pub fn set_nodelay(&self, _: bool) -> io::Result<()> {
match self.0 {}
}
pub fn nodelay(&self) -> io::Result<bool> {
match self.0 {}
}
pub fn set_ttl(&self, _: u32) -> io::Result<()> {
match self.0 {}
}
pub fn ttl(&self) -> io::Result<u32> {
match self.0 {}
}
pub fn take_error(&self) -> io::Result<Option<io::Error>> {
match self.0 {}
}
pub fn set_nonblocking(&self, _: bool) -> io::Result<()> {
match self.0 {}
}
}
impl fmt::Debug for TcpStream {
fn fmt(&self, _f: &mut fmt::Formatter) -> fmt::Result {
match self.0 {}
}
}
pub struct TcpListener(Void);
impl TcpListener {
pub fn bind(_: &SocketAddr) -> io::Result<TcpListener> {
unsupported()
}
pub fn socket_addr(&self) -> io::Result<SocketAddr> {
match self.0 {}
}
pub fn accept(&self) -> io::Result<(TcpStream, SocketAddr)> {
match self.0 {}
}
pub fn duplicate(&self) -> io::Result<TcpListener> {
match self.0 {}
}
pub fn set_ttl(&self, _: u32) -> io::Result<()> {
match self.0 {}
}
pub fn ttl(&self) -> io::Result<u32> {
match self.0 {}
}
pub fn set_only_v6(&self, _: bool) -> io::Result<()> {
match self.0 {}
}
pub fn only_v6(&self) -> io::Result<bool> {
match self.0 {}
}
pub fn take_error(&self) -> io::Result<Option<io::Error>> {
match self.0 {}
}
pub fn set_nonblocking(&self, _: bool) -> io::Result<()> {
match self.0 {}
}
}
impl fmt::Debug for TcpListener {
fn fmt(&self, _f: &mut fmt::Formatter) -> fmt::Result {
match self.0 {}
}
}
pub struct UdpSocket(Void);
impl UdpSocket {
pub fn bind(_: &SocketAddr) -> io::Result<UdpSocket> {
unsupported()
}
pub fn socket_addr(&self) -> io::Result<SocketAddr> {
match self.0 {}
}
pub fn recv_from(&self, _: &mut [u8]) -> io::Result<(usize, SocketAddr)> {
match self.0 {}
}
pub fn peek_from(&self, _: &mut [u8]) -> io::Result<(usize, SocketAddr)> {
match self.0 {}
}
pub fn send_to(&self, _: &[u8], _: &SocketAddr) -> io::Result<usize> {
match self.0 {}
}
pub fn duplicate(&self) -> io::Result<UdpSocket> {
match self.0 {}
}
pub fn set_read_timeout(&self, _: Option<Duration>) -> io::Result<()> {
match self.0 {}
}
pub fn set_write_timeout(&self, _: Option<Duration>) -> io::Result<()> {
match self.0 {}
}
pub fn read_timeout(&self) -> io::Result<Option<Duration>> {
match self.0 {}
}
pub fn write_timeout(&self) -> io::Result<Option<Duration>> {
match self.0 {}
}
pub fn set_broadcast(&self, _: bool) -> io::Result<()> {
match self.0 {}
}
pub fn broadcast(&self) -> io::Result<bool> {
match self.0 {}
}
pub fn set_multicast_loop_v4(&self, _: bool) -> io::Result<()> {
match self.0 {}
}
pub fn multicast_loop_v4(&self) -> io::Result<bool> {
match self.0 {}
}
pub fn set_multicast_ttl_v4(&self, _: u32) -> io::Result<()> {
match self.0 {}
}
pub fn multicast_ttl_v4(&self) -> io::Result<u32> {
match self.0 {}
}
pub fn set_multicast_loop_v6(&self, _: bool) -> io::Result<()> {
match self.0 {}
}
pub fn multicast_loop_v6(&self) -> io::Result<bool> {
match self.0 {}
}
pub fn join_multicast_v4(&self, _: &Ipv4Addr, _: &Ipv4Addr)
-> io::Result<()> {
match self.0 {}
}
pub fn join_multicast_v6(&self, _: &Ipv6Addr, _: u32)
-> io::Result<()> {
match self.0 {}
}
pub fn leave_multicast_v4(&self, _: &Ipv4Addr, _: &Ipv4Addr)
-> io::Result<()> {
match self.0 {}
}
pub fn leave_multicast_v6(&self, _: &Ipv6Addr, _: u32)
-> io::Result<()> {
match self.0 {}
}
pub fn set_ttl(&self, _: u32) -> io::Result<()> {
match self.0 {}
}
pub fn ttl(&self) -> io::Result<u32> {
match self.0 {}
}
pub fn take_error(&self) -> io::Result<Option<io::Error>> {
match self.0 {}
}
pub fn set_nonblocking(&self, _: bool) -> io::Result<()> {
match self.0 {}
}
pub fn recv(&self, _: &mut [u8]) -> io::Result<usize> {
match self.0 {}
}
pub fn peek(&self, _: &mut [u8]) -> io::Result<usize> {
match self.0 {}
}
pub fn send(&self, _: &[u8]) -> io::Result<usize> {
match self.0 {}
}
pub fn connect(&self, _: &SocketAddr) -> io::Result<()> {
match self.0 {}
}
}
impl fmt::Debug for UdpSocket {
fn fmt(&self, _f: &mut fmt::Formatter) -> fmt::Result {
match self.0 {}
}
}
pub struct LookupHost(Void);
impl Iterator for LookupHost {
type Item = SocketAddr;
fn next(&mut self) -> Option<SocketAddr> {
match self.0 {}
}
}
pub fn lookup_host(_: &str) -> io::Result<LookupHost> {
unsupported()
}
#[allow(nonstandard_style)]
std: Add a new wasm32-unknown-unknown target This commit adds a new target to the compiler: wasm32-unknown-unknown. This target is a reimagining of what it looks like to generate WebAssembly code from Rust. Instead of using Emscripten which can bring with it a weighty runtime this instead is a target which uses only the LLVM backend for WebAssembly and a "custom linker" for now which will hopefully one day be direct calls to lld. Notable features of this target include: * There is zero runtime footprint. The target assumes nothing exists other than the wasm32 instruction set. * There is zero toolchain footprint beyond adding the target. No custom linker is needed, rustc contains everything. * Very small wasm modules can be generated directly from Rust code using this target. * Most of the standard library is stubbed out to return an error, but anything related to allocation works (aka `HashMap`, `Vec`, etc). * Naturally, any `#[no_std]` crate should be 100% compatible with this new target. This target is currently somewhat janky due to how linking works. The "linking" is currently unconditional whole program LTO (aka LLVM is being used as a linker). Naturally that means compiling programs is pretty slow! Eventually though this target should have a linker. This target is also intended to be quite experimental. I'm hoping that this can act as a catalyst for further experimentation in Rust with WebAssembly. Breaking changes are very likely to land to this target, so it's not recommended to rely on it in any critical capacity yet. We'll let you know when it's "production ready". --- Currently testing-wise this target is looking pretty good but isn't complete. I've got almost the entire `run-pass` test suite working with this target (lots of tests ignored, but many passing as well). The `core` test suite is still getting LLVM bugs fixed to get that working and will take some time. Relatively simple programs all seem to work though! --- It's worth nothing that you may not immediately see the "smallest possible wasm module" for the input you feed to rustc. For various reasons it's very difficult to get rid of the final "bloat" in vanilla rustc (again, a real linker should fix all this). For now what you'll have to do is: cargo install --git https://github.com/alexcrichton/wasm-gc wasm-gc foo.wasm bar.wasm And then `bar.wasm` should be the smallest we can get it! --- In any case for now I'd love feedback on this, particularly on the various integration points if you've got better ideas of how to approach them!
2017-10-23 03:01:00 +00:00
pub mod netc {
pub const AF_INET: u8 = 0;
pub const AF_INET6: u8 = 1;
pub type sa_family_t = u8;
#[derive(Copy, Clone)]
pub struct in_addr {
pub s_addr: u32,
}
#[derive(Copy, Clone)]
pub struct sockaddr_in {
pub sin_family: sa_family_t,
pub sin_port: u16,
pub sin_addr: in_addr,
}
#[derive(Copy, Clone)]
pub struct in6_addr {
pub s6_addr: [u8; 16],
}
#[derive(Copy, Clone)]
pub struct sockaddr_in6 {
pub sin6_family: sa_family_t,
pub sin6_port: u16,
pub sin6_addr: in6_addr,
pub sin6_flowinfo: u32,
pub sin6_scope_id: u32,
}
#[derive(Copy, Clone)]
pub struct sockaddr {
}
pub type socklen_t = usize;
}