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Add (guix profiling).

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* guix/profiling.scm: New file.
* Makefile.am (MODULES): Add it.
* guix/store.scm (record-operation): Use 'profiled?' and
'register-profiling-hook!'.
This commit is contained in:
Ludovic Courtès 2017-06-28 10:13:45 +02:00
parent 6e119bad60
commit 03870da819
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GPG key ID: 090B11993D9AEBB5
3 changed files with 62 additions and 10 deletions
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1
Makefile.am
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@ -102,6 +102,7 @@ MODULES = \
guix/http-client.scm \
guix/gnupg.scm \
guix/elf.scm \
guix/profiling.scm \
guix/store.scm \
guix/cvs-download.scm \
guix/svn-download.scm \

52
guix/profiling.scm Normal file
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@ -0,0 +1,52 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2017 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
(define-module (guix profiling)
#:use-module (ice-9 match)
#:export (profiled?
register-profiling-hook!))
;;; Commentary:
;;;
;;; Basic support for Guix-specific profiling.
;;;
;;; Code:
(define profiled?
(let ((profiled
(or (and=> (getenv "GUIX_PROFILING") string-tokenize)
'())))
(lambda (component)
"Return true if COMPONENT profiling is active."
(member component profiled))))
(define %profiling-hooks
;; List of profiling hooks.
(map (match-lambda
("after-gc" after-gc-hook)
((or "exit" #f) exit-hook))
(or (and=> (getenv "GUIX_PROFILING_EVENTS") string-tokenize)
'("exit"))))
(define (register-profiling-hook! component thunk)
"Register THUNK as a profiling hook for COMPONENT, a string such as
\"rpc\"."
(when (profiled? component)
(for-each (lambda (hook)
(add-hook! hook thunk))
%profiling-hooks)))

19
guix/store.scm
View file

@ -25,6 +25,7 @@ (define-module (guix store)
#:use-module (guix base16)
#:use-module (guix base32)
#:use-module (guix hash)
#:use-module (guix profiling)
#:autoload (guix build syscalls) (terminal-columns)
#:use-module (rnrs bytevectors)
#:use-module (ice-9 binary-ports)
@ -794,16 +795,14 @@ (define* (show-rpc-profile #:optional (port (current-error-port)))
(define record-operation
;; Optionally, increment the number of calls of the given RPC.
(let ((profiled (or (and=> (getenv "GUIX_PROFILING") string-tokenize)
'())))
(if (member "rpc" profiled)
(begin
(add-hook! exit-hook show-rpc-profile)
(lambda (name)
(let ((count (or (hashq-ref %rpc-calls name) 0)))
(hashq-set! %rpc-calls name (+ count 1)))))
(lambda (_)
#t))))
(if (profiled? "rpc")
(begin
(register-profiling-hook! "rpc" show-rpc-profile)
(lambda (name)
(let ((count (or (hashq-ref %rpc-calls name) 0)))
(hashq-set! %rpc-calls name (+ count 1)))))
(lambda (_)
#t)))
(define-syntax operation
(syntax-rules ()