rbranson

#define _GNU_SOURCE
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <pthread.h>

void *worker(void *data) {
	int fd = open("/tmp/setloadavg", O_RDWR|O_CREAT|O_DIRECT);

rbranson

# is this tmux.conf good in 2022? i dunno.

unbind C-b

# C-b is not acceptable -- Vim uses it
set-option -g prefix C-a
bind-key C-a last-window

# Allows us to use C-a a <command> to send commands to a TMUX session inside
# another TMUX session

rbranson

type ary[T any] struct {
	members [arraySize]T
	len     uint16
}

func (a *ary[T]) length() int {
	return int(a.len)
}

func (a *ary[T]) set(index int, item T) {

rbranson

import random
import statistics

# last qtr results
price = 229.52
market_cap = 222985351000

# this was fed into https://www.socscistatistics.com/tests/regression/default.aspx
q_rev_hist_mills = [5963, 5817, 5419, 5151, 4865, 4851, 4513, 3997, 3737, 3603, 3392, 3281, 3006, 2865, 2701, 2577, 2397, 2339]

rbranson

import random


arr_values = [0, 60000000, 120000000, 240000000, 480000000]
arr_prob = [0.0625, 0.5, 0.25, 0.125, 0.0625]

arr_mult_values = [25, 50, 100]
arr_mult_prob = [0.70, 0.20, 0.10]

rbranson

The other story begins with adding a C library extension to the monolith. This was some Python code that wrapped a C library which gave access to an internal data store. Unfortunately, the bindings had a bug in their string handling code. To get a string object that could be sent to the Python C APIs, it used a family of functions called PyString_FromString.

The developer writing these C bindings didn’t realize that strings are immutable in Python, and the C API documentation for strings doesn’t include that bit of information. To copy a string from the C world to Python-land, the bindings would first use this function to initialize a Python string to use as a buffer. It would fill said buffer with the string from the C side by poking at the object’s internal data structures. This did actually work, as it was never seen BEFORE it was filled nor was it modified AFTER it was sent across the wall to Python-land.

Then disaster struck. A configuration change caused the it-has-always-worked function to begin t

rbranson

Desk Gear

Updated 2021-03-01

• Steelcase AirTouch Sit-Stand Desk
• Herman Miller Aeron Type C Chair
• Ergotron LX Monitor Arm
• 13" 2020 MacBook Pro
• Dell U4320Q UltraSharp 43" 4K USB-C Monitor
• Keychron K2 Keyboard with Blue Switches

rbranson

// delimbuf is a byte buffer that tracks the "records" of data
// that is appended to it.
type delimbuf struct {
	buf []byte

	// Record offsets in the buffer are tracked as offsets relative
	// to base. The purpose of this is to allow Shift() to quickly
	// remove records without an O(N) operation to rebase the offsets
	// stored in delims based on the shifted buffer contents.
	//

rbranson

package none

import "io"

func min(a int, b int) int {
	if a < b {
		return a
	}
	return b
}

rbranson

#!/bin/bash

status_json=$(fdbcli --exec 'status json')
master_addr=$(echo $status_json | jq -r '.cluster.processes[] | select(.roles[].role == "master") | .address')

# extra status json stuff workaround to bug in 6.0 where an immediate exit causes the command to not be sent
fdbcli --exec "status json; kill; kill $master_addr; status json"