commit 0df4ba8dc7bbd5d675140eefe78d7e205d628a8b Author: Daniil Gentili Date: Sun Aug 27 16:23:04 2023 +0200 First commit diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..59b5122 --- /dev/null +++ b/.gitignore @@ -0,0 +1,4 @@ +/target +/Cargo.lock +/crates/*/target +/vendor/ diff --git a/.vscode/settings.json b/.vscode/settings.json new file mode 100644 index 0000000..6ec22d3 --- /dev/null +++ b/.vscode/settings.json @@ -0,0 +1,5 @@ +{ + "rust-analyzer.linkedProjects": [ + "./crates/macros/Cargo.toml" + ] +} \ No newline at end of file diff --git a/Cargo.toml b/Cargo.toml new file mode 100644 index 0000000..0262b2f --- /dev/null +++ b/Cargo.toml @@ -0,0 +1,22 @@ +[package] +name = "php-tokio" +repository = "https://github.com/danog/php-tokio" +homepage = "https://github.com/danog/php-tokio" +license = "AGPLv3" +version = "0.1.0" +authors = ["Daniil Gentili "] +edition = "2021" + +[dependencies] +ext-php-rs = { git = "https://github.com/nicelocal/ext-php-rs", features = ["anyhow"] } +tokio = { version = "1", features = ["full"] } +tokio-pipe = "*" +lazy_static = "1.4.0" +libc = "*" +php-tokio-derive = { version = "=0.1.0", path = "./crates/macros" } + + +[workspace] +members = [ + "crates/macros", +] diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..dba13ed --- /dev/null +++ b/LICENSE @@ -0,0 +1,661 @@ + GNU AFFERO GENERAL PUBLIC LICENSE + Version 3, 19 November 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU Affero General Public License is a free, copyleft license for +software and other kinds of works, specifically designed to ensure +cooperation with the community in the case of network server software. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If your software can interact with users remotely through a computer +network, you should also make sure that it provides a way for users to +get its source. For example, if your program is a web application, its +interface could display a "Source" link that leads users to an archive +of the code. There are many ways you could offer source, and different +solutions will be better for different programs; see section 13 for the +specific requirements. + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU AGPL, see +. diff --git a/README.md b/README.md new file mode 100644 index 0000000..e54d208 --- /dev/null +++ b/README.md @@ -0,0 +1,15 @@ +# php-tokio - Use any async rust library from PHP! + +Created by Daniil Gentili ([@danog](https://github.com/danog)). + +This library allows you to use any async rust library from PHP, asynchronously. + +It's fully integrated with [revolt](https://revolt.run): this allows full compatibility with [amphp](https://amphp.org), [PSL](https://github.com/azjezz/psl) and reactphp. + +## Usage + +## Built with php-tokio + +Here's a list of async PHP extensions built with php-tokio (add yours by editing this file!): + +- [nicelocal/mongo-php-async-driver](https://github.com/Nicelocal/mongo-php-async-driver) - An async MongoDB PHP extension \ No newline at end of file diff --git a/crates/macros/Cargo.lock b/crates/macros/Cargo.lock new file mode 100644 index 0000000..020cbd9 --- /dev/null +++ b/crates/macros/Cargo.lock @@ -0,0 +1,54 @@ +# This file is automatically @generated by Cargo. +# It is not intended for manual editing. +version = 3 + +[[package]] +name = "anyhow" +version = "1.0.75" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "a4668cab20f66d8d020e1fbc0ebe47217433c1b6c8f2040faf858554e394ace6" + +[[package]] +name = "php-tokio-derive" +version = "0.1.0" +dependencies = [ + "anyhow", + "proc-macro2", + "quote", + "syn", +] + +[[package]] +name = "proc-macro2" +version = "1.0.66" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "18fb31db3f9bddb2ea821cde30a9f70117e3f119938b5ee630b7403aa6e2ead9" +dependencies = [ + "unicode-ident", +] + +[[package]] +name = "quote" +version = "1.0.33" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "5267fca4496028628a95160fc423a33e8b2e6af8a5302579e322e4b520293cae" +dependencies = [ + "proc-macro2", +] + +[[package]] +name = "syn" +version = "2.0.29" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "c324c494eba9d92503e6f1ef2e6df781e78f6a7705a0202d9801b198807d518a" +dependencies = [ + "proc-macro2", + "quote", + "unicode-ident", +] + +[[package]] +name = "unicode-ident" +version = "1.0.11" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "301abaae475aa91687eb82514b328ab47a211a533026cb25fc3e519b86adfc3c" diff --git a/crates/macros/Cargo.toml b/crates/macros/Cargo.toml new file mode 100644 index 0000000..92b2d66 --- /dev/null +++ b/crates/macros/Cargo.toml @@ -0,0 +1,18 @@ +[package] +name = "php-tokio-derive" +description = "Derive macros for php-tokio." +repository = "https://github.com/danog/php-tokio" +homepage = "https://github.com/danog/php-tokio" +license = "AGPLv3" +version = "0.1.0" +authors = ["Daniil Gentili "] +edition = "2021" + +[lib] +proc-macro = true + +[dependencies] +syn = { version = "^2", features = ["full", "extra-traits", "printing"] } +quote = "^1" +proc-macro2 = "^1" +anyhow = "^1.0" diff --git a/crates/macros/src/lib.rs b/crates/macros/src/lib.rs new file mode 100644 index 0000000..e3151d6 --- /dev/null +++ b/crates/macros/src/lib.rs @@ -0,0 +1,143 @@ +use anyhow::{bail, Result}; +use proc_macro2::Span; +use proc_macro2::TokenStream; +use quote::TokenStreamExt; +use quote::{quote, ToTokens}; +use syn::parse_quote; +use syn::FnArg; +use syn::GenericArgument; +use syn::ImplItemFn; +use syn::Pat; +use syn::PathArguments; +use syn::Type; +use syn::{parse_macro_input, ItemImpl}; + +#[proc_macro_attribute] +pub fn php_async_impl( + _: proc_macro::TokenStream, + input: proc_macro::TokenStream, +) -> proc_macro::TokenStream { + match parser(parse_macro_input!(input as ItemImpl)) { + Ok(parsed) => parsed, + Err(e) => syn::Error::new(Span::call_site(), e).to_compile_error(), + } + .into() +} + +fn parser(input: ItemImpl) -> Result { + let ItemImpl { self_ty, items, .. } = input; + + if input.trait_.is_some() { + bail!("This macro cannot be used on trait implementations."); + } + + let tokens = items + .into_iter() + .map(|item| { + Ok(match item { + syn::ImplItem::Fn(method) => handle_method(method)?, + item => item.to_token_stream(), + }) + }) + .collect::>>()?; + + let output = quote! { + #[::ext_php_rs::php_impl] + impl #self_ty { + #(#tokens)* + } + }; + + Ok(output) +} + +fn handle_method(input: ImplItemFn) -> Result { + let mut receiver = false; + let mut receiver_mutable = false; + let mut hack_tokens = quote! {}; + for arg in input.sig.inputs.iter() { + match arg { + FnArg::Receiver(r) => { + receiver = true; + receiver_mutable = r.mutability.is_some(); + } + FnArg::Typed(ty) => { + let mut this = false; + for attr in ty.attrs.iter() { + if attr.path().to_token_stream().to_string() == "this" { + this = true; + } + } + + if !this { + let param = match &*ty.pat { + Pat::Ident(pat) => &pat.ident, + _ => bail!("Invalid parameter type."), + }; + + let mut ty_inner = &*ty.ty; + let mut is_option = false; + + if let Type::Path(t) = ty_inner { + if t.path.segments[0].ident.to_string() == "Option" { + if let PathArguments::AngleBracketed(t) = &t.path.segments[0].arguments + { + if let GenericArgument::Type(t) = &t.args[0] { + ty_inner = t; + is_option = true; + } + } + } + } + let mut is_str = false; + if let Type::Reference(t) = ty_inner { + if t.mutability.is_none() { + if let Type::Path(t) = &*t.elem { + is_str = t.path.is_ident("str"); + } + } + hack_tokens.append_all(if is_str { + if is_option { + quote! { let #param = #param.and_then(|__temp| Some(unsafe { ::core::mem::transmute::<&str, &'static str>(__temp) })); } + } else { + quote! { let #param = unsafe { ::core::mem::transmute::<&str, &'static str>(#param) }; } + } + } else { + if is_option { + quote! { let #param = #param.and_then(|__temp| Some(unsafe { ::php_tokio::borrow_unchecked::borrow_unchecked(__temp) })); } + } else { + quote! { let #param = unsafe { ::php_tokio::borrow_unchecked::borrow_unchecked(#param) }; } + } + }); + } + } + } + } + } + + let mut input = input.clone(); + if input.sig.asyncness.is_some() { + input.sig.asyncness = None; + let stmts = input.block; + let this = if receiver { + if receiver_mutable { + quote! { let this = unsafe { std::mem::transmute::<&mut Self, &'static mut Self>(self) }; } + } else { + quote! { let this = unsafe { std::mem::transmute::<&Self, &'static Self>(self) }; } + } + } else { + quote! {} + }; + input.block = parse_quote! {{ + #this + #hack_tokens + + ::php_tokio::EventLoop::suspend_on(async move #stmts) + }}; + } + + let result = quote! { + #input + }; + Ok(result) +} diff --git a/src/borrow_unchecked.rs b/src/borrow_unchecked.rs new file mode 100644 index 0000000..7d1623c --- /dev/null +++ b/src/borrow_unchecked.rs @@ -0,0 +1,55 @@ +// Borrowed from https://github.com/jeremyBanks/you-can + +use ext_php_rs::binary_slice::{BinarySlice, PackSlice}; + + +#[inline(always)] +pub unsafe fn borrow_unchecked< + 'original, + 'unbounded, + Ref: BorrowUnchecked<'original, 'unbounded>, +>( + reference: Ref, +) -> Ref::Unbounded { + unsafe { BorrowUnchecked::borrow_unchecked(reference) } +} + +#[doc(hidden)] +pub unsafe trait BorrowUnchecked<'original, 'unbounded> { + type Unbounded; + + unsafe fn borrow_unchecked(self) -> Self::Unbounded; +} + +unsafe impl<'original, 'unbounded, T: 'unbounded> BorrowUnchecked<'original, 'unbounded> + for &'original T +{ + type Unbounded = &'unbounded T; + + #[inline(always)] + unsafe fn borrow_unchecked(self) -> Self::Unbounded { + unsafe { ::core::mem::transmute(self) } + } +} + +unsafe impl<'original, 'unbounded, T: 'unbounded> BorrowUnchecked<'original, 'unbounded> + for &'original mut T +{ + type Unbounded = &'unbounded mut T; + + #[inline(always)] + unsafe fn borrow_unchecked(self) -> Self::Unbounded { + unsafe { ::core::mem::transmute(self) } + } +} + +unsafe impl<'original, 'unbounded, T: 'unbounded + PackSlice> BorrowUnchecked<'original, 'unbounded> + for BinarySlice<'original, T> +{ + type Unbounded = BinarySlice<'unbounded, T>; + + #[inline(always)] + unsafe fn borrow_unchecked(self) -> Self::Unbounded { + unsafe { ::core::mem::transmute(self) } + } +} \ No newline at end of file diff --git a/src/event_loop.rs b/src/event_loop.rs new file mode 100644 index 0000000..5cfcce1 --- /dev/null +++ b/src/event_loop.rs @@ -0,0 +1,130 @@ + +use std::cell::RefCell; +use std::fs::File; +use std::future::Future; +use std::io::{self, Write}; +use std::os::fd::{RawFd, FromRawFd}; +use std::sync::mpsc::{Sender, Receiver, channel}; +use std::io::Read; +use crate::borrow_unchecked::borrow_unchecked; +use ext_php_rs::boxed::ZBox; +use ext_php_rs::call_user_func; +use ext_php_rs::prelude::*; +use ext_php_rs::types::ZendHashTable; +use ext_php_rs::zend::Function; +use lazy_static::lazy_static; +use tokio::runtime::Runtime; +use std::os::fd::AsRawFd; + +lazy_static! { + pub static ref RUNTIME: Runtime = Runtime::new().expect("Could not allocate runtime"); +} + +thread_local! { + static EVENTLOOP: RefCell> = RefCell::new(None); +} + +#[cfg(any(target_os = "linux", target_os = "solaris"))] +fn sys_pipe() -> io::Result<(RawFd, RawFd)> { + let mut pipefd = [0; 2]; + let ret = unsafe { libc::pipe2(pipefd.as_mut_ptr(), libc::O_CLOEXEC | libc::O_NONBLOCK) }; + if ret == -1 { + return Err(io::Error::last_os_error()); + } + Ok((pipefd[0], pipefd[1])) +} + +pub struct EventLoop { + fibers: ZBox, + + sender: Sender, + receiver: Receiver, + + notify_sender: File, + notify_receiver: File, + + get_current_suspension: Function, + + dummy: [u8; 1], +} + +impl EventLoop { + pub fn init() -> PhpResult { + EVENTLOOP.with_borrow_mut(|e| { + Ok( + match e { + None => e.insert(Self::new()?), + Some(ev) => ev + }.notify_receiver.as_raw_fd() as u64 + ) + }) + } + + pub fn suspend_on + Send + 'static>(future: F) -> T { + let (future, get_current_suspension) = EVENTLOOP.with_borrow_mut(move |c| { + let c = c.as_mut().unwrap(); + let idx = c.fibers.len() as u64; + c.fibers.insert_at_index(idx, call_user_func!(c.get_current_suspension).unwrap()).unwrap(); + + let sender = c.sender.clone(); + let mut notifier = c.notify_sender.try_clone().unwrap(); + + (RUNTIME.spawn(async move { + let res = future.await; + sender.send(idx).unwrap(); + notifier.write_all(&[0]).unwrap(); + res + }), unsafe { + borrow_unchecked(&c.get_current_suspension) + }) + }); + + call_user_func!(get_current_suspension).unwrap().try_call_method("suspend", vec![]).unwrap(); + + return RUNTIME.block_on(future).unwrap(); + } + + pub fn wakeup() -> PhpResult<()> { + EVENTLOOP.with_borrow_mut(|c| { + let c = c.as_mut().unwrap(); + + c.notify_receiver.read_exact(&mut c.dummy).unwrap(); + + for fiber_id in c.receiver.try_iter() { + if let Some(fiber) = c.fibers.get_index_mut(fiber_id) { + fiber.object_mut().unwrap().try_call_method("resume", vec![])?; + c.fibers.remove_index(fiber_id); + } + } + Ok(()) + }) + } + + pub fn shutdown() { + EVENTLOOP.set(None) + } + + pub fn new() -> PhpResult { + let (sender, receiver) = channel(); + let (notify_receiver, notify_sender) = + sys_pipe().map_err(|err| format!("Could not create pipe: {}", err))?; + + if !call_user_func!(Function::from_function("class_exists"), "\\Revolt\\EventLoop")?.bool().unwrap_or(false) { + return Err(format!("\\Revolt\\EventLoop does not exist!").into()); + } + if !call_user_func!(Function::from_function("interface_exists"), "\\Revolt\\EventLoop\\Suspension")?.bool().unwrap_or(false) { + return Err(format!("\\Revolt\\EventLoop\\Suspension does not exist!").into()); + } + + Ok(Self { + fibers: ZendHashTable::new(), + sender: sender, + receiver: receiver, + notify_sender: unsafe { File::from_raw_fd(notify_sender) }, + notify_receiver: unsafe { File::from_raw_fd(notify_receiver) }, + dummy: [0; 1], + get_current_suspension: Function::try_from_method("\\Revolt\\EventLoop", "getSuspension").ok_or("\\Revolt\\EventLoop::getSuspension does not exist")?, + }) + } +} + diff --git a/src/lib.rs b/src/lib.rs new file mode 100644 index 0000000..bd760f5 --- /dev/null +++ b/src/lib.rs @@ -0,0 +1,6 @@ +pub mod borrow_unchecked; +mod event_loop; + +pub use php_tokio_derive::php_async_impl; +pub use event_loop::RUNTIME; +pub use event_loop::EventLoop;