From 5e36a594d66c0f5208c97fa1a8e142c0014d172d Mon Sep 17 00:00:00 2001
From: David Thompson <dthompson@member.fsf.org>
Date: Mon, 2 Sep 2013 17:06:49 -0400
Subject: Move both mvars into the repl module.

---
 2d/game-loop.scm | 32 ++++----------------------------
 2d/repl/repl.scm |  9 +++++----
 2 files changed, 9 insertions(+), 32 deletions(-)

diff --git a/2d/game-loop.scm b/2d/game-loop.scm
index 6f80297..844ddb5 100644
--- a/2d/game-loop.scm
+++ b/2d/game-loop.scm
@@ -32,8 +32,7 @@
   #:use-module (2d repl server)
   #:use-module (2d repl repl)
   #:use-module (2d mvars)
-  #:export (game-mvar
-            on-active-hook
+  #:export (on-active-hook
             on-resize-hook
             on-quit-hook
             on-render-hook
@@ -58,29 +57,6 @@
 ;;;
 
 (define *fps* 0)
-(define game-mvar (new-mvar))
-
-;; The REPL sets this flag when it needs to evaluate something.
-;; Only the REPL server thread will mutate this variable.
-;;(define *repl-waiting* #f)
-;;(define game-loop-mutex (make-mutex 'unchecked-unlock))
-
-;;;
-;;; REPL Hooks
-;;;
-
-;; Lock game loop mutex before evaluating code from REPL server and
-;; unlock it afterwards.
-;; (add-hook! before-eval-hook
-;;            (lambda (exp)
-;;              (set! *repl-waiting* #t)
-;;              (lock-mutex game-loop-mutex)))
-
-;; (add-hook! after-eval-hook
-;;            (lambda (exp)
-;;              (set! *repl-waiting* #f)
-;;              (when (equal? (mutex-owner game-loop-mutex) (current-thread))
-;;                (unlock-mutex game-loop-mutex))))
 
 ;;;
 ;;; Hooks
@@ -198,7 +174,7 @@ is the unused accumulator time."
 
 (define (run-repl-thunk thunk input output error)
   (put-mvar
-   game-mvar
+   repl-output-mvar
    (with-input-from-port input
      (lambda ()
        (with-output-to-port output
@@ -207,8 +183,8 @@ is the unused accumulator time."
 
 (define (run-repl)
   "Execute a thunk from the REPL is there is one."
-  (unless (mvar-empty? repl-mvar)
-    (and-let* ((vals (try-take-mvar repl-mvar)))
+  (unless (mvar-empty? repl-input-mvar)
+    (and-let* ((vals (try-take-mvar repl-input-mvar)))
       (apply run-repl-thunk vals))))
 
 ;;;
diff --git a/2d/repl/repl.scm b/2d/repl/repl.scm
index a5b0536..58b79e3 100644
--- a/2d/repl/repl.scm
+++ b/2d/repl/repl.scm
@@ -31,7 +31,7 @@
   #:use-module (ice-9 control)
   #:use-module (2d mvars)
   #:use-module (2d game-loop)
-  #:export (repl-mvar start-repl run-repl))
+  #:export (repl-input-mvar repl-output-mvar start-repl run-repl))
 
 
 ;;;
@@ -130,7 +130,8 @@
 ;;; The repl
 ;;;
 
-(define repl-mvar (new-mvar))
+(define repl-input-mvar (new-mvar))
+(define repl-output-mvar (new-mvar))
 
 (define* (start-repl #:optional (lang (current-language)) #:key debug)
   ;; ,language at the REPL will update the current-language.  Make
@@ -196,7 +197,7 @@
                                ;; game loop will schedule it and run
                                ;; it on the next tick.
                                (put-mvar
-                                repl-mvar
+                                repl-input-mvar
                                 (list
                                  (lambda ()
                                   (call-with-error-handling
@@ -209,7 +210,7 @@
                                ;; Read the results back from
                                ;; game-mvar. Will block until results
                                ;; are available.
-                               (take-mvar game-mvar))
+                               (take-mvar repl-output-mvar))
                              (lambda (k) (values))))
                       (lambda l
                         (for-each (lambda (v)
-- 
cgit v1.2.3