jzl jizhilong

jizhilong / Parsers.java

Created October 13, 2019 05:51

a simple parsec like parer combinator toll in java 8

	import java.util.ArrayList;
	import java.util.Collections;
	import java.util.List;
	import java.util.Objects;
	import java.util.function.BiFunction;
	import java.util.function.Consumer;
	import java.util.function.Function;
	import java.util.function.Predicate;
	import java.util.stream.Collectors;

jizhilong / cswsnoop

Last active October 19, 2019 07:47

snoop commands with context switch freqency more than 1000/s

	#!/usr/bin/env python
	'''
	count occurence rate of lines with certain keyword with ewma algorithm.
	'''

	import math
	import time
	import sys

jizhilong / cswsnoop_jvm.py

Created May 25, 2020 11:45

count and sort jvm threadpool's context switch rate

	#!/usr/bin/env python
	"""
	Author: Ji.Zhilong <[email protected]>
	Description: count and sort jvm threadpool's context switch rate
	Usage: python cswsnoop_jvm.py
	"""

	import sys
	import time
	import os

jizhilong / gitlab-ci-job-rules-cheatsheet.md

Created December 22, 2021 07:52

gitlab ci job rules cheat sheet

only if

rules:
  - if: '$CI_COMMIT_BRANCH == "master"'
    when: always
  - when: never

jizhilong / timerfd.py

Last active February 20, 2024 05:32

timerfd_create/timerfd_settime/timerfd_gettime implementations based on ctypes and libc

	"""
	timerfd_xx functions and demos for python versions prior to 3.13, implemented with ctypes and libc.
	"""
	try:
	from os import timerfd_create, timerfd_settime, timerfd_gettime, timerfd_settime_ns, timerfd_gettime_ns
	from os import TFD_NONBLOCK, TFD_CLOEXEC, TFD_TIMER_ABSTIME, TFD_TIMER_CANCEL_ON_SET
	except ImportError:
	import os
	import time
	from typing import Optional

jizhilong / generate-toc-for-afciaa-pdf.sh

Last active February 10, 2025 10:14

toc file for a-first-course-in-abstract-algebra-jb-fraleigh-7ed2003.pdf

	$ pip install -U pdf.tocgen
	$ pdftocio in.pdf < toc