1 files changed, 52 insertions, 0 deletions
diff --git a/benchmarks/chain.scm b/benchmarks/chain.scm
new file mode 100644
index 0000000..441cebf
--- /dev/null
+++ b/benchmarks/chain.scm
@@ -0,0 +1,52 @@
+#!/usr/bin/env guile
+# -*- scheme -*-
+!#
+
+(use-modules (ice-9 match)
+             (fibers)
+             (fibers channels))
+
+(define (make-chain link-count make-head make-link make-tail)
+  (let lp ((link-count link-count) (ch (make-head)))
+    (if (zero? link-count)
+        (make-tail ch)
+        (lp (1- link-count) (make-link ch)))))
+
+(define (test link-count message-count)
+  (get-message
+   (make-chain
+    link-count
+    (lambda ()
+      (let ((out (make-channel)))
+        (spawn-fiber (lambda ()
+                       (let lp ((n 0))
+                         (put-message out n)
+                         (lp (1+ n))))
+                     #:parallel? #t)
+        out))
+    (lambda (in)
+      (let ((out (make-channel)))
+        (spawn-fiber (lambda ()
+                       (let lp ()
+                         (put-message out (get-message in))
+                         (lp)))
+                     #:parallel? #t)
+        out))
+    (lambda (in)
+      (let ((out (make-channel)))
+        (spawn-fiber (lambda ()
+                       (let lp ()
+                         (if (< (get-message in) message-count)
+                             (lp)
+                             (put-message out 'done))))
+                     #:parallel? #t)
+        out)))))
+
+(define (main args)
+  (match args
+    ((_ link-count message-count)
+     (let ((link-count (string->number link-count))
+           (message-count (string->number message-count)))
+       (run-fibers (lambda () (test link-count message-count)))))))
+
+(when (batch-mode?) (main (program-arguments)))