Marcus Lagergren lagergren

RFC: Partial Escape Analysis in HotSpot C2

Summary

Reduce object-oriented overhead of a method compiled by C2 compiler. The C2 parser delays heap allocation and initialization to the place from which the object is about to escape. The optimization reduces allocation and initialization cost of an object on the paths of flowgraph where it is not escaped.

Goals

Perform flow-sensitive escape analysis
Delay heap allocation and initialization of an object until it is about to escape.

Force RGB Color on M1 Mac

How to Force RGB Color Output instead of YPbPr on your M1 Apple Silicon Mac for an External Monitor.

This step-by-step video tutorial will guide you through the procedure of forcing RGB color output on your M1 Mac.

Here is the direct link to the video tutorial: https://www.youtube.com/watch?v=Z1EqH3fd0V4

The video also has Closed Captions (Subtitles) that you can enable, to make it easier to follow if needed.

Creating bootable Linux USB using Mac

CentOS, Ubuntu, Slackware, etc. Whatever Linux-based OS it is, you can create a bootable USB for it by using a Mac.

1. Prepare the .iso file

Download it, copy it, whatever it takes to prepare that Linux-based OS .iso file

2. Convert the .iso file into a .img.dmg

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

Ctrl-Key: ^[
Octal: \033
Unicode: \u001b
Hexadecimal: \x1B
Decimal: 27

	HotSpot Internals Wiki
	https://wiki.openjdk.java.net/display/HotSpot/Main

	High-level introduction to HotSpot
	https://www.infoq.com/articles/Introduction-to-HotSpot

	Jvm-Mechanics https://github.com/dougqh/jvm-mechanics.git

	Open Heart Surgery: Analyzing and Debugging the Java HotSpot VM at the OS Level (by Volker Simonis, JavaOne 2014)
	https://www.youtube.com/watch?v=k7IX_diKCEo

	{
	"title": "Citrix Receiver/Workspace modifiers for Ctrl, Alt, Windows order",
	"rules": [
	{
	"description": "In Citrix, add fn modifier to tab so it is forwarded",
	"manipulators": [
	{
	"from": {
	"key_code": "tab",
	"modifiers": { "optional": [ "any" ] }

	;;; package --- Fix permissions for Emacs.app on macOS Catalina
	;;; Author: Artem Loenko
	;;; Mail-To: <[email protected]>
	;;; Commentary:
	;;; Code:

	(defconst _default-emacs-app-plist-path "/Applications/Emacs.app/Contents/Info.plist")
	(defconst _temp-buffer-name "fixing Emacs permissions")
	(defconst _temp-buffer (get-buffer-create _temp-buffer-name))
	(with-current-buffer _temp-buffer (erase-buffer))

	#!/bin/bash

	if [ -z "$1" ]; then
	echo "waiting for the following arguments: username + max-page-number"
	exit 1
	else
	name=$1
	fi

	if [ -z "$2" ]; then

	/*
	* This is free and unencumbered software released into the public domain.
	*
	* For more information, please refer to <https://unlicense.org>
	*/

	//Regular text
	#define BLK "\e[0;30m"
	#define RED "\e[0;31m"
	#define GRN "\e[0;32m"

	org=myorg_is_here
	gh repo list $org --limit 100 \| cut -f 1 \| xargs -L1 gh repo clone $1