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|
||||
checksum = "03088793f677dce356f3ccc2edb1b314ad191ab702a5de3faf49304f7e104918"
|
||||
dependencies = [
|
||||
"cfg-if",
|
||||
"libc",
|
||||
"redox_syscall",
|
||||
"winapi 0.3.9",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "syn"
|
||||
version = "1.0.38"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "e69abc24912995b3038597a7a593be5053eb0fb44f3cc5beec0deb421790c1f4"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"unicode-xid",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "tokio"
|
||||
version = "0.2.22"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5d34ca54d84bf2b5b4d7d31e901a8464f7b60ac145a284fba25ceb801f2ddccd"
|
||||
dependencies = [
|
||||
"bytes",
|
||||
"fnv",
|
||||
"futures-core",
|
||||
"lazy_static",
|
||||
"libc",
|
||||
"memchr",
|
||||
"mio",
|
||||
"mio-named-pipes",
|
||||
"mio-uds",
|
||||
"num_cpus",
|
||||
"pin-project-lite",
|
||||
"signal-hook-registry",
|
||||
"tokio-macros",
|
||||
"winapi 0.3.9",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "tokio-macros"
|
||||
version = "0.2.5"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f0c3acc6aa564495a0f2e1d59fab677cd7f81a19994cfc7f3ad0e64301560389"
|
||||
dependencies = [
|
||||
"proc-macro2",
|
||||
"quote",
|
||||
"syn",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "unicode-xid"
|
||||
version = "0.2.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
|
||||
|
||||
[[package]]
|
||||
name = "winapi"
|
||||
version = "0.2.8"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
|
||||
|
||||
[[package]]
|
||||
name = "winapi"
|
||||
version = "0.3.9"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
|
||||
dependencies = [
|
||||
"winapi-i686-pc-windows-gnu",
|
||||
"winapi-x86_64-pc-windows-gnu",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "winapi-build"
|
||||
version = "0.1.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
|
||||
|
||||
[[package]]
|
||||
name = "winapi-i686-pc-windows-gnu"
|
||||
version = "0.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
|
||||
|
||||
[[package]]
|
||||
name = "winapi-x86_64-pc-windows-gnu"
|
||||
version = "0.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
||||
|
||||
[[package]]
|
||||
name = "ws2_32-sys"
|
||||
version = "0.2.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "d59cefebd0c892fa2dd6de581e937301d8552cb44489cdff035c6187cb63fa5e"
|
||||
dependencies = [
|
||||
"winapi 0.2.8",
|
||||
"winapi-build",
|
||||
]
|
||||
@ -0,0 +1,22 @@
|
||||
[package]
|
||||
name = "leanify-many"
|
||||
version = "0.1.0"
|
||||
description = "spawn leanify subprocesses"
|
||||
authors = ["Avril <flanchan@cumallover.me>"]
|
||||
edition = "2018"
|
||||
|
||||
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||
|
||||
[features]
|
||||
default = ["splash"]
|
||||
|
||||
threads = ["tokio/rt-threaded"]
|
||||
splash = []
|
||||
|
||||
[dependencies]
|
||||
lazy_static = "1.4"
|
||||
tokio = {version = "0.2", features= ["rt-core", "rt-util", "macros", "io-driver", "io-util", "io-std", "process", "sync", "stream"]}
|
||||
futures = "0.3"
|
||||
|
||||
[build-dependencies]
|
||||
rustc_version = "0.2"
|
||||
@ -0,0 +1,24 @@
|
||||
|
||||
extern crate rustc_version;
|
||||
use rustc_version::{version, version_meta, Channel};
|
||||
|
||||
fn main() {
|
||||
// Assert we haven't travelled back in time
|
||||
assert!(version().unwrap().major >= 1);
|
||||
|
||||
// Set cfg flags depending on release channel
|
||||
match version_meta().unwrap().channel {
|
||||
Channel::Stable => {
|
||||
println!("cargo:rustc-cfg=stable");
|
||||
}
|
||||
Channel::Beta => {
|
||||
println!("cargo:rustc-cfg=beta");
|
||||
}
|
||||
Channel::Nightly => {
|
||||
println!("cargo:rustc-cfg=nightly");
|
||||
}
|
||||
Channel::Dev => {
|
||||
println!("cargo:rustc-cfg=dev");
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,148 @@
|
||||
use super::*;
|
||||
use std::{
|
||||
num::{
|
||||
NonZeroUsize,
|
||||
ParseIntError,
|
||||
},
|
||||
};
|
||||
use lazy_static::lazy_static;
|
||||
|
||||
#[inline] pub fn program_name() -> &'static str
|
||||
{
|
||||
lazy_static!{
|
||||
static ref PROG: &'static str = Box::leak(std::env::args().next().unwrap().into_boxed_str());
|
||||
}
|
||||
&PROG[..]
|
||||
}
|
||||
|
||||
pub fn usage() -> !
|
||||
{
|
||||
#[cfg(feature="splash")]
|
||||
splash::print();
|
||||
|
||||
println!(r"Usage: {prog} [--max-children <number>] [-] <files...>
|
||||
Usage: {prog} --help
|
||||
|
||||
OPTIONS:
|
||||
--max-children <number> Max subprocesses allowed to live at once. Infinite by default.
|
||||
|
||||
ENVIRONMENT VARS:
|
||||
LEANIFY=<process name> Path to leanify executable, defaults to looking in `PATH' if set.", prog = program_name());
|
||||
|
||||
std::process::exit(1)
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
pub enum Error {
|
||||
#[cfg(nightly)] BadNumber(std::num::IntErrorKind),
|
||||
#[cfg(not(nightly))] BadNumber(()),
|
||||
NoFiles,
|
||||
}
|
||||
impl std::error::Error for Error{}
|
||||
impl std::fmt::Display for Error
|
||||
{
|
||||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result
|
||||
{
|
||||
//write!(f, "arg parsing failed: ")?;
|
||||
match self {
|
||||
Self::BadNumber(_v) => {
|
||||
write!(f, "expected non-zero integer")?;
|
||||
|
||||
#[cfg(nightly)] use std::num::IntErrorKind;
|
||||
#[cfg(nightly)] return match _v {
|
||||
IntErrorKind::Empty => write!(f, ": argument empty"),
|
||||
IntErrorKind::InvalidDigit => write!(f, ": invalid digit"),
|
||||
IntErrorKind::Overflow => write!(f, ": conversion would result in overflow"),
|
||||
IntErrorKind::Underflow => write!(f, ": conversion would result in underflow"),
|
||||
IntErrorKind::Zero => write!(f, ": found zero"),
|
||||
_=> Ok(()),
|
||||
};
|
||||
#[cfg(not(nightly))] Ok(())
|
||||
},
|
||||
Self::NoFiles => write!(f, "need at least one argument")
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl From<ParseIntError> for Error
|
||||
{
|
||||
fn from(_er: ParseIntError) -> Self
|
||||
{
|
||||
#[cfg(nightly)] return Self::BadNumber(_er.kind().clone());
|
||||
#[cfg(not(nightly))] Self::BadNumber
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
#[derive(Debug, Clone, PartialEq, Eq)]
|
||||
pub struct Config
|
||||
{
|
||||
pub max_children: Option<NonZeroUsize>,
|
||||
pub files: Vec<String>,
|
||||
}
|
||||
|
||||
impl Default for Config
|
||||
{
|
||||
#[inline]
|
||||
fn default() -> Self
|
||||
{
|
||||
Self {
|
||||
max_children: None,
|
||||
files: Vec::new(),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// Parse the `env::args()`
|
||||
#[inline] pub fn parse_args() -> Result<Config, Error>
|
||||
{
|
||||
let args = std::env::args();
|
||||
if args.len() <= 1 {
|
||||
println!("Warning: No arguments specified, try passing `--help`.");
|
||||
}
|
||||
parse(args.skip(1))
|
||||
}
|
||||
|
||||
fn parse<I,T>(args: I) -> Result<Config, Error>
|
||||
where I: IntoIterator<Item=T>,
|
||||
T: Into<String>
|
||||
{
|
||||
let mut args = args.into_iter().map(|x| x.into());
|
||||
let mut cfg = Config::default();
|
||||
let mut reading=true;
|
||||
let mut first=true;
|
||||
while let Some(arg) = args.next() {
|
||||
if reading {
|
||||
let lw_arg = arg.trim().to_lowercase();
|
||||
if first {
|
||||
match lw_arg.as_str() {
|
||||
"--help" => {
|
||||
usage()
|
||||
},
|
||||
_ => (),
|
||||
}
|
||||
}
|
||||
first=false;
|
||||
|
||||
match lw_arg.as_str() {
|
||||
"--max-children" => {
|
||||
if let Some(nzi) = args.next() {
|
||||
cfg.max_children = Some(nzi.parse()?);
|
||||
continue;
|
||||
}
|
||||
}
|
||||
"-" => {
|
||||
reading= false;
|
||||
continue;
|
||||
},
|
||||
_ => (),
|
||||
}
|
||||
}
|
||||
reading = false;
|
||||
cfg.files.push(arg);
|
||||
}
|
||||
if cfg.files.len() == 0 {
|
||||
return Err(Error::NoFiles);
|
||||
}
|
||||
Ok(cfg)
|
||||
}
|
||||
@ -0,0 +1,68 @@
|
||||
use std::{
|
||||
error,
|
||||
fmt,
|
||||
};
|
||||
|
||||
#[derive(Debug)]
|
||||
pub struct PrefixedError<T>
|
||||
where T: error::Error + 'static
|
||||
{
|
||||
prefix: String,
|
||||
internal: T,
|
||||
}
|
||||
impl<T> std::error::Error for PrefixedError<T>
|
||||
where T: error::Error + 'static
|
||||
{
|
||||
fn source(&self) -> Option<&(dyn error::Error + 'static)>
|
||||
{
|
||||
Some(&self.internal)
|
||||
}
|
||||
}
|
||||
impl<T> std::fmt::Display for PrefixedError<T>
|
||||
where T: error::Error + 'static
|
||||
{
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result
|
||||
{
|
||||
write!(f, "{}: {}", self.prefix, self.internal)
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
impl<T> PrefixedError<T>
|
||||
where T: error::Error + 'static
|
||||
{
|
||||
#[inline] pub fn into_inner(self) -> T
|
||||
{
|
||||
self.internal
|
||||
}
|
||||
}
|
||||
|
||||
pub trait ErrorExt: Sized + error::Error
|
||||
{
|
||||
fn with_prefix(self, msg: impl ToString) -> PrefixedError<Self>;
|
||||
}
|
||||
pub trait ResultExt<T,E>: Sized
|
||||
where E: error::Error + 'static
|
||||
{
|
||||
fn with_prefix(self, msg: impl ToString) -> Result<T,PrefixedError<E>>;
|
||||
}
|
||||
|
||||
impl<T> ErrorExt for T
|
||||
where T: error::Error + 'static
|
||||
{
|
||||
#[inline] fn with_prefix(self, msg: impl ToString) -> PrefixedError<Self>
|
||||
{
|
||||
PrefixedError {
|
||||
prefix: msg.to_string(),
|
||||
internal: self
|
||||
}
|
||||
}
|
||||
}
|
||||
impl<T,E> ResultExt<T,E> for Result<T,E>
|
||||
where E: error::Error + 'static
|
||||
{
|
||||
#[inline] fn with_prefix(self, msg: impl ToString) -> Result<T,PrefixedError<E>>
|
||||
{
|
||||
self.map_err(|e| e.with_prefix(msg))
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,80 @@
|
||||
use super::*;
|
||||
use std::{
|
||||
fmt,
|
||||
borrow::Cow,
|
||||
path::{
|
||||
Path,
|
||||
PathBuf,
|
||||
},
|
||||
};
|
||||
|
||||
const DEFAULT_BINARY_NAME: &'static str = "leanify";
|
||||
|
||||
#[derive(Debug)]
|
||||
pub enum Error
|
||||
{
|
||||
FileFailed(PathBuf),
|
||||
PathFailed(PathBuf),
|
||||
}
|
||||
|
||||
impl std::error::Error for Error{}
|
||||
impl std::fmt::Display for Error
|
||||
{
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result
|
||||
{
|
||||
match self {
|
||||
Self::FileFailed(path) => write!(f, "file {:?} does not exist.", path),
|
||||
Self::PathFailed(path) => write!(f, "no directory in `$PATH` contained file {:?}", path),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn binary_name() -> Cow<'static, str>
|
||||
{
|
||||
if let Ok(bin_name) = std::env::var("LEANIFY") {
|
||||
if bin_name.len() > 0 {
|
||||
return Cow::Owned(bin_name);
|
||||
}
|
||||
}
|
||||
return Cow::Borrowed(DEFAULT_BINARY_NAME);
|
||||
}
|
||||
|
||||
fn get_path() -> Vec<PathBuf>
|
||||
{
|
||||
if let Ok(path) = std::env::var("PATH")
|
||||
{
|
||||
path.split(":").filter_map(|x| {
|
||||
let path = Path::new(x);
|
||||
if path.is_dir() {
|
||||
Some(path.to_owned())
|
||||
} else {
|
||||
None
|
||||
}
|
||||
}).collect()
|
||||
} else {
|
||||
Vec::default()
|
||||
}
|
||||
}
|
||||
|
||||
/// Find the path to leanify binary
|
||||
pub fn find_binary() -> Result<PathBuf, Error>
|
||||
{
|
||||
let path = binary_name();
|
||||
let path = Path::new(path.as_ref());
|
||||
|
||||
if path.is_file() {
|
||||
Ok(path.to_owned())
|
||||
}
|
||||
else if !path.is_absolute() {
|
||||
//Lookup in $PATH
|
||||
for spath in get_path().into_iter() {
|
||||
let spath = spath.join(path);
|
||||
if spath.is_file() {
|
||||
return Ok(spath);
|
||||
}
|
||||
}
|
||||
Err(Error::PathFailed(path.to_owned()))
|
||||
} else {
|
||||
Err(Error::FileFailed(path.to_owned()))
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,45 @@
|
||||
#![cfg_attr(nightly, feature(int_error_matching))]
|
||||
|
||||
#![allow(dead_code)]
|
||||
|
||||
|
||||
#[cfg(feature="splash")]
|
||||
mod splash;
|
||||
mod arg;
|
||||
mod error;
|
||||
pub use error::{ErrorExt as _, ResultExt as _};
|
||||
|
||||
mod stage;
|
||||
mod leanify;
|
||||
|
||||
mod process;
|
||||
mod work;
|
||||
|
||||
async fn work() -> Result<(), Box<dyn std::error::Error>>
|
||||
{
|
||||
let args = arg::parse_args().with_prefix("failed to parse args")?;
|
||||
let leanify = leanify::find_binary().with_prefix("Couldn't find leanify binary")?;
|
||||
|
||||
|
||||
|
||||
Ok(())
|
||||
}
|
||||
|
||||
|
||||
#[tokio::main]
|
||||
async fn main() {
|
||||
prettify_expect(work().await.map_err(|e| e.to_string()), "exited with error");
|
||||
}
|
||||
|
||||
#[inline] fn prettify_expect<T,E,S>(res: Result<T,E>, msg: S) -> T
|
||||
where S: AsRef<str>,
|
||||
E: std::fmt::Display
|
||||
{
|
||||
match res {
|
||||
Ok(v) => v,
|
||||
Err(e) => {
|
||||
eprintln!("\n{}: {}", msg.as_ref(), e);
|
||||
std::process::exit(1)
|
||||
},
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,34 @@
|
||||
//! Handles spawning the process
|
||||
|
||||
/// Spawn the process, and contain its standard output.
|
||||
///
|
||||
/// # Notes
|
||||
/// Standard error is printed immediately instead.
|
||||
pub async fn contained_spawn<T,U,V>(process: T, args: U) -> Result<StdoutCache, Error>
|
||||
where T: AsRef<str>,
|
||||
U: IntoIterator<Item=V>,
|
||||
T: AsRef<str>
|
||||
{
|
||||
|
||||
}
|
||||
|
||||
#[derive(Debug)]
|
||||
pub enum Error {
|
||||
/// There was an error spawning the process
|
||||
Spawning,
|
||||
/// Process exited with non-zero error code.
|
||||
Process,
|
||||
}
|
||||
impl std::error::Error for Error{}
|
||||
impl std::fmt::Display for Error
|
||||
{
|
||||
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result
|
||||
{
|
||||
match self {
|
||||
Self::Spawning => write!(f, "there was an error spawning the process"),
|
||||
Self::Process => write!(f, "process exited with non-zero code"),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -0,0 +1,16 @@
|
||||
use lazy_static::lazy_static;
|
||||
|
||||
pub fn authors() -> &'static [&'static str]
|
||||
{
|
||||
lazy_static! {
|
||||
static ref AUTHORS: Vec<&'static str> = env!("CARGO_PKG_AUTHORS").split(":").collect();
|
||||
}
|
||||
|
||||
&AUTHORS[..]
|
||||
}
|
||||
|
||||
#[inline] pub fn print()
|
||||
{
|
||||
println!("{} version {} -- {}.\n Created with <3 by {}\n Licensed with GPL 3.0 or later\n", env!("CARGO_PKG_NAME"), env!("CARGO_PKG_VERSION"), env!("CARGO_PKG_DESCRIPTION"), authors().join(", "));
|
||||
|
||||
}
|
||||
@ -0,0 +1,131 @@
|
||||
//! Supports sending many messages from many producers to many consumers, first come first served.
|
||||
|
||||
use std::{
|
||||
collections::LinkedList,
|
||||
sync::{Arc, Weak},
|
||||
iter::FromIterator,
|
||||
};
|
||||
use tokio::{
|
||||
sync::{
|
||||
RwLock,
|
||||
},
|
||||
task::yield_now,
|
||||
stream::Stream,
|
||||
};
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
pub struct Stage<T>
|
||||
{
|
||||
internal: Arc<RwLock<LinkedList<T>>>,
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone)]
|
||||
pub struct StageSender<T> {
|
||||
internal: Weak<RwLock<LinkedList<T>>>,
|
||||
}
|
||||
|
||||
impl<T> StageSender<T>
|
||||
{
|
||||
/// Send a message to the queue, returns `Ok(())` if possible, `Err(value)` if failed.
|
||||
pub async fn send(&self, value: T) -> Result<(), T>
|
||||
{
|
||||
loop {
|
||||
if let Some(internal) = self.internal.upgrade() {
|
||||
let mut write = internal.write().await;
|
||||
break Ok(write.push_back(value));
|
||||
} else {
|
||||
break Err(value);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl<T> Stage<T>
|
||||
{
|
||||
/// Create a new stage from an input
|
||||
#[inline] fn from_iter<I>(from: I) -> Self
|
||||
where I: IntoIterator<Item=T>
|
||||
{
|
||||
Self {
|
||||
internal: Arc::new(RwLock::new(from.into_iter().collect()))
|
||||
}
|
||||
}
|
||||
|
||||
/// Create a new empty stage
|
||||
pub fn new() -> Self
|
||||
{
|
||||
Self{
|
||||
internal: Arc::new(RwLock::new(LinkedList::new())),
|
||||
}
|
||||
}
|
||||
|
||||
/// Create a new sender
|
||||
pub fn sender(&self) -> StageSender<T>
|
||||
{
|
||||
StageSender {
|
||||
internal: Arc::downgrade(&self.internal),
|
||||
}
|
||||
}
|
||||
|
||||
/// Receive one.
|
||||
///
|
||||
/// If there are no senders, this will return `None`
|
||||
pub async fn take(&self) -> Option<T>
|
||||
{
|
||||
loop {
|
||||
{
|
||||
let mut write = self.internal.write().await;
|
||||
if let Some(value) = write.pop_front() {
|
||||
return Some(value);
|
||||
} else if Arc::weak_count(&self.internal) < 1 {
|
||||
return None;
|
||||
}
|
||||
}
|
||||
yield_now().await
|
||||
}
|
||||
}
|
||||
|
||||
/// Current backlog length
|
||||
pub async fn len(&self) -> usize {
|
||||
self.internal.read().await.len()
|
||||
}
|
||||
|
||||
/// Number of active senders
|
||||
pub fn senders(&self) -> usize {
|
||||
Arc::weak_count(&self.internal)
|
||||
}
|
||||
|
||||
/// Number of active receivers
|
||||
pub fn receivers(&self) -> usize {
|
||||
Arc::strong_count(&self.internal)
|
||||
}
|
||||
}
|
||||
|
||||
impl<T> FromIterator<T> for Stage<T>
|
||||
{
|
||||
fn from_iter<I: IntoIterator<Item=T>>(iter: I) -> Self {
|
||||
Self::from_iter(iter)
|
||||
}
|
||||
}
|
||||
|
||||
use std::{
|
||||
task::{Context, Poll},
|
||||
pin::Pin,
|
||||
future::Future,
|
||||
};
|
||||
|
||||
impl<T> Stream for Stage<T>
|
||||
{
|
||||
type Item=T;
|
||||
fn poll_next(self: Pin<&mut Self>, cx: &mut Context) -> Poll<Option<Self::Item>>
|
||||
{
|
||||
let future= async {
|
||||
while let Some(value) = self.take().await {
|
||||
return Some(value);
|
||||
}
|
||||
None
|
||||
};
|
||||
tokio::pin!(future);
|
||||
future.poll(cx)
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,70 @@
|
||||
use super::*;
|
||||
use std::{
|
||||
num::NonZeroUsize,
|
||||
sync::Arc,
|
||||
pin::Pin,
|
||||
marker::{
|
||||
Send,
|
||||
},
|
||||
};
|
||||
use tokio::{
|
||||
prelude::*,
|
||||
stream::StreamExt,
|
||||
sync::{
|
||||
Semaphore,
|
||||
},
|
||||
};
|
||||
use futures::future::{
|
||||
join_all,
|
||||
Future,
|
||||
};
|
||||
|
||||
pub async fn maybe_await<T>(from: Option<T>) -> Option<<T as Future>::Output>
|
||||
where T: Future
|
||||
{
|
||||
if let Some(v) = from {
|
||||
Some(v.await)
|
||||
} else {
|
||||
None
|
||||
}
|
||||
}
|
||||
|
||||
pub async fn do_work(process: impl AsRef<str>, file: impl AsRef<str>)
|
||||
{
|
||||
let process = process.as_ref();
|
||||
let file = file.as_ref();
|
||||
|
||||
match process::contained_spawn(process, std::iter::once(file)).await {
|
||||
Ok(output) => {
|
||||
|
||||
},
|
||||
Err(process::Error::Spawning) => {
|
||||
|
||||
},
|
||||
Err(process::Error::Process) => {
|
||||
|
||||
},
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
pub async fn work<I,T>(process: String, files: I, children: Option<NonZeroUsize>) -> Result<(), Box<dyn std::error::Error>>
|
||||
where I: IntoIterator<Item=T>,
|
||||
T: AsRef<str> + Send + 'static
|
||||
{
|
||||
//let mut stage: stage::Stage<String> = files.into_iter().map(|x| x.into()).collect();
|
||||
let semaphore = children.map(|children| Arc::new(Semaphore::new(children.into())));
|
||||
let process = Arc::new(process);
|
||||
|
||||
join_all(files.into_iter()
|
||||
.map(|filename| {
|
||||
let semaphore = semaphore.clone();
|
||||
let process = Arc::clone(&process);
|
||||
tokio::spawn(async move {
|
||||
let _lock = maybe_await(semaphore.map(|x| x.acquire_owned())).await;
|
||||
do_work(&process[..], filename).await;
|
||||
})
|
||||
})).await;
|
||||
|
||||
Ok(())
|
||||
}
|
||||
Loading…
Reference in new issue