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#include <iostream>
#include <algorithm>
#include <functional>
#include <limits>
#include <utility>
#include <vector>
#include <string>
#include <random>
#include <cassert>

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#!/bin/bash
set -euo pipefail

if [[ $# != 4 ]]; then
  echo "Usage: $0 YEAR DOI INPUT.pdf OUTPUT.pdf" >&2
  echo "Example: $0 2023 XX.XXXX/XXXXX.XXXX.XXXXX INPUT.pdf OUTPUT.pdf" >&2
  exit 1
fi

YEAR=$1

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/*
 * Usage:
 *   $ gcc -march=native -O3 -fopenmp avx_fma_checker.c
 *   $ ./a.out <n_threads> <n_iterations> <n_repeats>
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <unistd.h>

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import math
import numpy as np
import plotly.graph_objects as go
import plotly.io as pio

# plotly figure
pio.templates.default = "plotly_white"
fig = go.Figure()

# damped oscillation

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This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or
distribute this software, either in source code form or as a compiled
binary, for any purpose, commercial or non-commercial, and by any
means.

In jurisdictions that recognize copyright laws, the author or authors
of this software dedicate any and all copyright interest in the
software to the public domain. We make this dedication for the benefit

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#!/bin/bash
set -euo pipefail
export LC_ALL=C
export LANG=C

if !(type reptyr > /dev/null 2>&1); then
  echo "Please install 'reptyr' command." >&2
  exit 1
fi

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#!/bin/bash
#
# Convert an SVG file to a PDF file by using headless Chrome.
#

if [ $# -ne 2 ]; then
  echo "Usage: ./svg2pdf.bash input.svg output.pdf" 1>&2
  exit 1
fi

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Debug segfaults that only happen outside of gdb

In some rare cases, you may encounter bugs that happen only in normal execution, but not with GDB. It's really annoying; if you try to investigate it, it just disappears. Such bugs are called Haisenbug, and you can debug it with GDB by using a trick described here.

The idea is using signal handlers in programs. When SIGSEGV is caught, a signal handler is called. You can sleep for a long time in the signal handler, and then attach the program by using gdb attach.

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// compile: g++ dekker.cpp -lpthread

#include <stdio.h>
#include <thread>
#include <unistd.h>
#include <pthread.h>
#include <sys/syscall.h>

#define N               100000
#define USE_MEMFENCE    1