From: Andre Noll <maan@systemlinux.org>
Date: Mon, 28 Dec 2009 21:51:23 +0000 (+0100)
Subject: Add btr_bytes_pending().
X-Git-Tag: v0.4.2~250
X-Git-Url: http://git.tue.mpg.de/?a=commitdiff_plain;h=883af94f87f7d5465047c3bdd626a9dca3c2be8c;p=paraslash.git

Add btr_bytes_pending().
---

diff --git a/buffer_tree.c b/buffer_tree.c
index 084827e3..941d58db 100644
--- a/buffer_tree.c
+++ b/buffer_tree.c
@@ -196,3 +196,20 @@ size_t btr_get_input_queue_size(struct btr_node *btrn)
 		size += br_available_bytes(br);
 	return size;
 }
+
+/**
+ * Return the size of the largest input queue.
+ *
+ * Iterates over all children of the given node.
+ */
+size_t btr_bytes_pending(struct btr_node *btrn)
+{
+	size_t max_size = 0;
+	struct btr_node *ch;
+
+	FOR_EACH_CHILD(ch, btrn) {
+		size_t size = btr_get_input_queue_size(ch);
+		max_size = PARA_MAX(max_size, size);
+	}
+	return max_size;
+}
diff --git a/buffer_tree.h b/buffer_tree.h
index 8a7a33b8..b066ad9e 100644
--- a/buffer_tree.h
+++ b/buffer_tree.h
@@ -5,3 +5,4 @@ struct btr_node *btr_new_node(char *name, struct btr_node *parent);
 void btr_del_node(struct btr_node *btrn);
 void btr_add_output(char *buf, size_t size, struct btr_node *btrn);
 bool btr_is_leaf_node(struct btr_node *btrn);
+size_t btr_bytes_pending(struct btr_node *btrn);