114 lines
3.7 KiB
EmacsLisp
114 lines
3.7 KiB
EmacsLisp
;;; FG42 --- a simple package manager for FG42 -*- lexical-binding: t; -*-
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;; Copyright (C) 2010-2018 lxsameer
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;; Author: Sameer Rahmani <lxsameer@gnu.org>
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;; Keywords: lisp fg42 IDE package manager
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;; Version: 2.31
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; An Editor/IDE bundle base on Lovely Gnu/Emacs to make your life easier
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;;; Code:
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(defvar fg42-home (getenv "FG42_HOME")
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"The pass to fg42-home.")
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(defvar fg42-tmp (concat fg42-home "/tmp"))
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(require 'fpkg)
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(fpkg-initialize-once)
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(require 'fg42/base)
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(require 'fg42/splash)
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(require 'fg42/race)
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(require 'fg42/utils)
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(require 'fg42/key-bindings)
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(defvar fg42-before-initialize-hook nil
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"This hook will be called before FG42 initilization process.")
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(defvar fg42-after-initialize-hook nil
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"This hook will be called after FG42 initilization process.")
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(defvar fg42-gc-cons-threshold 16777216
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"Value of GC threshold of FG42.")
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(defun defer-garbage-collection ()
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"Disable garbage collection."
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(setq gc-cons-threshold fg42-gc-cons-threshold))
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(defun restore-garbage-collection ()
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"Restore garbage collection to it's default value."
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(run-at-time
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1 nil (lambda () (setq gc-cons-threshold most-positive-fixnum))))
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(defun fg42--startup-optimization ()
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"Optimize FG42 startup."
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;; by setting gc threshold to the largest number
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;; Emacs can understand we are basically disabling it :).
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(setq gc-cons-threshold most-positive-fixnum
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gc-cons-percentage 0.6)
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;; after initilization phase restore cons threshold to normal
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(add-hook 'emacs-startup-hook
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(lambda ()
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(setq gc-cons-threshold fg42-gc-cons-threshold ; 16mb
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gc-cons-percentage 0.1)))
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;; disable auto initilization of package.el
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(setq package-enable-at-startup nil)
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;; disable gc when we are in minibuffer using the same method we
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;; use for initilization time
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(add-hook 'minibuffer-setup-hook #'defer-garbage-collection)
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;; just enable gc when exiting minibuffer
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(add-hook 'minibuffer-exit-hook #'restore-garbage-collection)
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;; we dont need Emacs to check every file type and look for file
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;; handlers when we are initializing so we backup the original
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;; value and set it to nil
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(setq --file-name-handler-alist file-name-handler-alist)
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(setq file-name-handler-alist nil)
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;; after initialization we can restore that file-name-handler-alist
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;; to original value.
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(add-hook 'emacs-startup-hook
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(lambda ()
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(setq file-name-handler-alist
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--file-name-handler-alist)))
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;; initial mode for emacs can be fundamental mode we have nothing to lose
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(setq initial-major-mode 'fundamental-mode))
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(defun fg42-initialize ()
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"Initialize FG42 editor."
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(setq fg42-start-timestamp (float-time))
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(fg42--startup-optimization)
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(run-hooks 'fg42-before-initialize-hook)
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(mkdir fg42-tmp t)
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(setq package-user-dir (concat fg42-home "/packages"))
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(fpkg-initialize)
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(initialize-extensions)
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(run-hooks 'fg42-after-initialize-hook)
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(setq read-process-output-max (* 1024 1024))
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(message "startup time: %s" (- (float-time) fg42-start-timestamp)))
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(provide 'fg42)
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;; fg42.el ends here
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