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neomantra / Dockerfile.lua_ipython_kernel
Created September 15, 2018 03:13
Code for https://github.com/neomantra/lua_ipython_kernel/issues/2
# Builds lua_ipython_kernel on centos
ARG IMAGE_BASE="centos"
ARG IMAGE_TAG="7"
FROM ${IMAGE_BASE}:${IMAGE_TAG}
RUN yum install -y \
epel-release \
&& yum install -y \
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neomantra / Dockerfile_cpp
Created September 19, 2017 21:11
Aeron C++ Dockerfile
# Dockerfile for Aeron C++ SDK
#
# Copyright (c) 2017 Neomantra BV
# Released under the MIT License, see LICENSE.txt
FROM debian:stretch-slim
MAINTAINER Evan Wies <evan@neomantra.net>
ARG AERON_VERSION="master"
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neomantra / bson_float_test.c
Created June 13, 2017 05:38
BSON Float test
/// cc -o bson_float_test bson_float_test.c -lbson-1.0.0
#include <stdio.h>
#include <libbson-1.0/bson.h>
int main(int argc, const char* argv[])
{
bson_t b;
bson_init(&b);
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neomantra / tuple_iter_inline.cpp
Created December 15, 2016 17:04
experiment with tuple iteration, boost::fusion versus manual template recursion.
#include <iostream>
#include <boost/fusion/adapted/std_tuple.hpp>
#include <boost/fusion/algorithm/iteration/for_each.hpp>
struct One {
int value() const { return 1+rand(); }
};
struct Two {
int value() const { return 2+rand(); }
@neomantra
neomantra / tuple_iter_inline.cpp
Created December 15, 2016 17:04
experiment with tuple iteration, boost::fusion versus manual template recursion.
#include <iostream>
#include <boost/fusion/adapted/std_tuple.hpp>
#include <boost/fusion/algorithm/iteration/for_each.hpp>
struct One {
int value() const { return 1+rand(); }
};
struct Two {
int value() const { return 2+rand(); }
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neomantra / matrix_bench_ffi.lua
Last active August 29, 2015 14:05 — forked from AlexKordic/matrix_bench_ffi.lua
local ffi = require("ffi")
local new = ffi.new
--[[
All numeric calculations are performed with doubles. Using
floats for storage saves memory (for big arrays). But arithmetic
is usually slower due to the required float<->double conversions.
]]
local Matrix
local MatrixStructure = ffi.typeof("double[16]")
@neomantra
neomantra / bcname.lua
Created April 10, 2014 15:00
Convert LuaJIT bytecode number to name.
-- Converts a LuaJIT bytecode number to name
--
-- usage: luajit bcname.lua bytecode_number [bytecode_number2 [...]]
--
-- example:
-- $ luajit-2.1 bcname.lua 71 72
-- VARG
-- ISNEXT
--
-- From: http://www.freelists.org/post/luajit/frames-and-tail-calls,1
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neomantra / output.txt
Last active August 29, 2015 13:56
FFI serializer fake metamethod
$ luajit ~/Desktop/serialize_metamethod.lua
2 =%= 3
cdata<struct 98>: 0x0004d738
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neomantra / FFI_metamethod_play.lua
Created February 27, 2014 14:35
Exploring accessing metamethods with FFI objects
local ffi = require 'ffi'
local C = ffi.C
-- in reality this would be some hashing library,
-- but for this example they are dumb functions
local hasher = function(x) return tonumber(x) end
local H = {
hash = hasher,
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neomantra / alloc_test.lua
Last active April 19, 2017 21:22
LuaJIT experiments in trying to grab memory outside of the low 32-bits of memory using jemalloc. Looks like jemalloc on Linux is a silver bullet!
#!/usr/bin/env luajit
-- iteratively allocates of `size` bytes using a specified allocator
-- intended to exercise malloc and jemalloc to see where they are allocating memory
-- requires the luajit-jemalloc module
local num_iters = 5
local alloc = 'malloc'
local size = arg[1] and tonumber(arg[1]) or 1000
if arg[2] and arg[2] == 'jemalloc' then alloc = 'jemalloc' end