osa1

// clang -Wall main.c -o main -DNONBLOCK

#include <errno.h>
#include <fcntl.h>
#include <poll.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <termios.h>

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/// Set `stdin` to non-blocking mode.
pub fn set_stdin_nonblocking() {
    use nix::fcntl::{fcntl, FcntlArg, OFlag};

    let mut stdin_flags: OFlag = match fcntl(libc::STDIN_FILENO, FcntlArg::F_GETFL) {
        Err(err) => {
            panic!("Unable to read stdin flags: {:?}", err);
        }
        Ok(flags) => match OFlag::from_bits(flags) {

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#![allow(dead_code)]

// This module implements the SSA construction algorithm described in
//
//     Simple and Efficient Construction of Static Single Assignment Form
//     (https://pp.info.uni-karlsruhe.de/uploads/publikationen/braun13cc.pdf)

use cranelift_entity::{entity_impl, PrimaryMap, SecondaryMap};
use std::collections::HashMap;

osa1

" Make CTRL-T work correctly with goto-definition.
setlocal tagfunc=CocTagFunc

nmap <leader>gre <Plug>(coc-references)
nmap <leader>grn <Plug>(coc-rename)

" nmap <leader>ge <Plug>(coc-diagnostic-info)
nmap <leader>ge :<C-u>CocList diagnostics<CR>
nmap <leader>gp <Plug>(coc-diagnostic-prev)
nmap <leader>gn <Plug>(coc-diagnostic-next)

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// $ gcc -fPIC -shared -o libgc.so gc.c
// $ LD_PRELOAD=$(pwd)/libgc.so ghci

#include <stdlib.h>

void GarbageCollect() {
    exit(1);
}

void hs_init() {

osa1

Spawning async tasks in GTK apps

I'm trying to spawn async tasks in a GTK app using GLib's [MainContext::spawn][1]. Questions:

• I'm not sure how to get MainContext of a GTK [Application][2]. I think Application should already have a MainContext, and I'm not sure if creating a new one is safe.

• In a task spawned by MainContext::spawn I'm not sure which async I/O function/traits I can use. I think I can use AsyncRead/AsyncWrite from futures but that's not documented.

• In a task I'm not sure how to spawn more tasks. Should I pass a copy of MainContext to my tasks and use it to spawn more tasks via the spawn method?

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# Sample TOML configuration file for building Rust.
#
# To configure rustbuild, copy this file to the directory from which you will be
# running the build, and name it config.toml.
#
# All options are commented out by default in this file, and they're commented
# out with their default values. The build system by default looks for
# `config.toml` in the current directory of a build for build configuration, but
# a custom configuration file can also be specified with `--config` to the build
# system.

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[package]
name = "blocking_test"
version = "0.1.0"
authors = ["Ömer Sinan Ağacan <omeragacan@gmail.com>"]
edition = "2018"

[dependencies]
futures-preview = { version = "0.3.0-alpha.18",  features = ["async-await", "nightly"] }
futures-util-preview = "0.3.0-alpha.18"
tokio = { git = "https://github.com/tokio-rs/tokio.git", features = ["timer"] }

osa1

[package]
name = "delay_test"
version = "0.1.0"
authors = ["Ömer Sinan Ağacan <omeragacan@gmail.com>"]
edition = "2018"

[dependencies]
tokio = { git = "https://github.com/tokio-rs/tokio.git", features = ["timer"] }
futures-preview = { version = "0.3.0-alpha.18",  features = ["async-await", "nightly"] }
futures-util-preview = "0.3.0-alpha.18"

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// A drag-and-drop example. You can drag the list items using the icon on the left, and drop them
// to other icons to move the list item. Originally listbox-dnd.c in GTK+ repository. Ported to
// gtk-rs by Ömer Sinan Ağacan <omeragacan@gmail.com>.

extern crate cairo;
extern crate gdk;
extern crate gtk;

use gdk::{Atom, DragAction, DragContext, ModifierType, Screen};
use gtk::*;