Add (guix workers).

* guix/workers.scm, tests/workers.scm: New files.
* Makefile.am (MODULES, SCM_TESTS): Add them.
* .dir-locals.el: Add rule for 'eventually'.

1 files changed, 45 insertions, 0 deletions

diff --git a/tests/workers.scm b/tests/workers.scm
new file mode 100644
index 0000000000..44b882f691
--- /dev/null
+++ b/tests/workers.scm
@@ -0,0 +1,45 @@
+;;; 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 (test-workers)
+  #:use-module (guix workers)
+  #:use-module (ice-9 threads)
+  #:use-module (srfi srfi-64))
+
+(test-begin "workers")
+
+(test-equal "enqueue"
+  4242
+  (let* ((pool   (make-pool))
+         (result 0)
+         (1+!    (let ((lock (make-mutex)))
+                   (lambda ()
+                     (with-mutex lock
+                       (set! result (+ result 1)))))))
+    (let loop ((i 4242))
+      (unless (zero? i)
+        (pool-enqueue! pool 1+!)
+        (loop (- i 1))))
+    (let poll ()
+      (unless (pool-idle? pool)
+        (pk 'busy result)
+        (sleep 1)
+        (poll)))
+    result))
+
+(test-end)