doomemacs/modules/tools/lsp/config.el
2020-10-11 20:31:46 -04:00

46 lines
1.7 KiB
EmacsLisp

;;; tools/lsp/config.el -*- lexical-binding: t; -*-
(defvar +lsp-defer-shutdown 3
"If non-nil, defer shutdown of LSP servers for this many seconds after last
workspace buffer is closed.
This delay prevents premature server shutdown when a user still intends on
working on that project after closing the last buffer, or when programmatically
killing and opening many LSP/eglot-powered buffers.")
;;
;;; Common
(defvar +lsp--default-read-process-output-max nil)
(defvar +lsp--default-gcmh-high-cons-threshold nil)
(define-minor-mode +lsp-optimization-mode
"Deploys universal GC and IPC optimizations for `lsp-mode' and `eglot'."
:global t
:init-value nil
(if (not +lsp-optimization-mode)
(setq-default read-process-output-max +lsp--default-read-process-output-max
gcmh-high-cons-threshold +lsp--default-gcmh-high-cons-threshold)
(setq +lsp--default-read-process-output-max
(default-value 'read-process-output-max)
+lsp--default-gcmh-high-cons-threshold
(default-value 'gcmh-high-cons-threshold))
;; `read-process-output-max' is only available on recent development
;; builds of Emacs 27 and above.
(setq-default read-process-output-max (* 1024 1024))
;; REVIEW LSP causes a lot of allocations, with or without Emacs 27+'s
;; native JSON library, so we up the GC threshold to stave off
;; GC-induced slowdowns/freezes. Doom uses `gcmh' to enforce its
;; GC strategy, so we modify its variables rather than
;; `gc-cons-threshold' directly.
(setq-default gcmh-high-cons-threshold (* 2 +lsp--default-gcmh-high-cons-threshold)))
(gcmh-set-high-threshold))
;;
;;; Implementations
(if (featurep! +eglot)
(load! "+eglot")
(load! "+lsp"))