aidanhs

.PHONY: clean do

CFLAGS=-O0 -m32
EMFLAGS=\
	--memory-init-file 0

do: clean x.o y.o z.o
	emar rc libtest.a y.o
	emar rc libtest.a x.o
	emranlib libtest.a

aidanhs

int main(void) {

  int x = EM_ASM_INT({
    Module.print('I received: ' + $0);
    return $0 + 1;
  }, 100)

  return x;

}

aidanhs

var http = require('http');
http.createServer(function (req, res) {
  res.writeHead(200, {'Content-Type': 'text/plain'});
  res.write('echo /');
  console.log('kill me now');
  setTimeout(function () {
    res.write('tmp/xx\n');
  }, 50000);
}).listen(8080, '127.0.0.1');
console.log('Server running at http://127.0.0.1:8080/');

aidanhs

--- runtime-gdb.py	2015-05-05 17:03:21.520510629 +0100
+++ runtime-gdb-hacks.py	2015-05-05 17:05:24.416677753 +0100
@@ -369,6 +369,41 @@
 		ptr = ptr[linkfield]
 
 
+class AidanCmd(gdb.Command):
+	"List all goroutines."
+
+	def __init__(self):

aidanhs

The instructions are:

$ go build udocker.go
$ chgrp docker udocker
$ chmod g+s udocker
$ mv udocker /usr/local/bin

I have performed the first three and therefore have this:

aidanhs

// ==UserScript==
// @name      CoffeeTest
// @namespace test
// @version   0.1
// @grant     none
// @require   http://jashkenas.github.io/coffee-script/extras/coffee-script.js
// @match     http://example.iana.org/
// ==/UserScript==

/*

aidanhs

set -e

# Clean up previous test
rm log.log || true
rm -rf .git .hg .bup

# Specify how our file is going to be constructed
NUMS="00 01 02 03 04 05 06 07 08 09"
F1="00                           "
F2="00 01 02                     "

aidanhs

```
2013/11/22 18:15:26 2c9e825beb3b2c37d0a4d9c5625e10384bc6433c4a08a19b2092820a783bae4a: Failed to umount filesystem: Umount: Failed to umount /var/lib/docker/containers/2c9e825beb3b2c37d0a4d9c5625e10384bc6433c
4a08a19b2092820a783bae4a/rootfs
panic: runtime error: close of closed channel

goroutine 24 [running]:
runtime.panic(0x8eb1e0, 0x101f915)
        /usr/local/go/src/pkg/runtime/panic.c:266 +0xb6
github.com/dotcloud/docker.(*Container).monitor(0xc210062c40)
        /go/src/github.com/dotcloud/docker/container.go:1232 +0x512

aidanhs

package main

import (
	"database/sql"
	"database/sql/driver"
	"net/http"
	"runtime"
	"time"
)

aidanhs

dd if=/dev/urandom bs=1M count=1000 of=/tmp/bigfile

# Note! This will cause your computer to slow down while it puts
# all files it's accessing back in memory
sudo sync
sudo sh -c 'echo 3 > /proc/sys/vm/drop_caches'

sleep 5
dd if=/tmp/bigfile bs=1M of=/dev/null