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ntrrgc /
Created Jul 25, 2018
Add library offsets to otherwise useless WebKit crash tracebacks (requires saving /proc/{pid}/maps somewhere before the crash)
import os
import re
from collections import namedtuple
path_maps = os.path.expanduser("~/tmp/rpi-crash-maps")
path_stack = os.path.expanduser("~/tmp/rpi-crash-stack")
MapsLine = namedtuple("MapsLine", ["start", "end", "file"])
ntrrgc / page-watcher.cpp
Created Jun 30, 2018
Proof of concept for page-based watchpoints
View page-watcher.cpp
#define __USE_POSIX199309
#include <cassert>
#include <signal.h>
#include <mutex>
#include <functional>
#include <sys/ptrace.h>
#include <malloc.h>
#include <sys/mman.h>
#include <unistd.h>
#include <set>
ntrrgc /
Created Sep 15, 2017
WebKit remote build with delta downloads
set -eu
BUILD_ARGS=(--gtk --debug)
# Files big enough to deserve xdelta transfer
# Generate with the following command:
ntrrgc /
Last active Mar 22, 2018
Generate crazy MP4 edit lists to be added to media files for testing.
# Generate crazy MP4 edit lists to be added to media files for testing.
# 1. Modify the timescales below with the actual values from the MP4 file.
# 2. Run the following commands to patch the file with Bento:
# # Remove previously existing edit list (optional, only if there is some)
# mp4edit --remove moov/trak/edts original.mp4 patched1.mp4
ntrrgc / graceful-libvirtd-shutdown.service
Created Aug 20, 2017
Gracefully shutdown libvirtd VMs on shutdown. Start and enable the provided systemd service for it to work.
View graceful-libvirtd-shutdown.service
Description=Wait for VMs to shutdown gracefully
ntrrgc /
Created Jul 31, 2017
Script to import CMake flags into a QtCreator project file
#!/usr/bin/env python
# Usage: python CMakeLists.txt.user -DPORT=GTK -DENABLE_MEDIA_SOURCE=ON ...
from argparse import ArgumentParser
from xml.etree import ElementTree
def clean_cmake_args(cmake_args):
Not all arguments are relevant for QtCreator.
Returns a list with only the relevant ones.
ntrrgc / find-borders.cpp
Created Apr 21, 2016
This program scans images in order to find white borders having no substantial content inside.
View find-borders.cpp
* This program scans images in order to find white borders having no
* substantial content inside. This can be used to automatically crop
* meaningless parts of images.
* This program is designed to work only with white backgrounds.
* A Qt based test utility is provided in the main() function.
* Copyright (c) 2016 Juan Luis Boya
ntrrgc /
Created Jan 27, 2016
Ugliest hack in quite a time... Fixes the volume control lag in Spotify in the weirdest way you can imagine.
# For some reason, volume control lags in Spotify, but not when pavucontrol is
# executing.
# Other volume control apps, like gnome-control-center are not enough, it has
# to be pavucontrol.
# This is unfortunate, among other reasons, because pavucontrol uses quite a
# few CPU resources while opened.
ntrrgc / example.js
Created Dec 15, 2015
fibrous example
View example.js
var fibrous = require('fibrous');
var fs = require('fs');
var wait = function wait(ms, callback) {
setTimeout(callback, ms);
function getSomething() {
var a = fs.sync.readFile('/tmp/a', 'utf8');
var b = fs.sync.readFile('/tmp/b', 'utf8');
ntrrgc /
Last active Nov 22, 2015
Comprimir fotos
if [ ! $# -eq 2 ]; then
echo "Este es un script para comprimir fotos."
echo "Uso: $1 <carpeta con fotos originales> <carpeta de destino para las fotos comprimidas>"
if ! which convert > /dev/null 2>&1; then
echo "No tienes imagemagick... Procedo a instalarlo."
sudo bash -c 'apt-get update && apt-get -y install imagemagick'
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