From d945bca329f7a13741e1d3afcf9f0f73f6c70ce9 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Sun, 16 Jul 2017 15:56:05 +0000
Subject:  Add ftrigr_updateb()

---
 src/libs6/ftrigr_ack.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100644 src/libs6/ftrigr_ack.c

(limited to 'src/libs6/ftrigr_ack.c')

diff --git a/src/libs6/ftrigr_ack.c b/src/libs6/ftrigr_ack.c
new file mode 100644
index 0000000..5c9a9f3
--- /dev/null
+++ b/src/libs6/ftrigr_ack.c
@@ -0,0 +1,17 @@
+/* ISC license. */
+
+#include <stdint.h>
+#include <skalibs/genalloc.h>
+#include <s6/ftrigr.h>
+
+void ftrigr_ack (ftrigr_t *a, size_t n)
+{
+  size_t len = genalloc_len(uint16_t, &a->list) ;
+  a->head += n ;
+  if (a->head > len) a->head = len ;
+  if (a->head == len)
+  {
+    a->head = 0 ;
+    genalloc_setlen(uint16_t, &a->list, 0) ;
+  }
+}
-- 
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