[Mesa-dev] [PATCH 2/3] exec_list: add a function to count the size of a list

[Connor Abbott]

Signed-off-by: Connor Abbott <connor.abbott at intel.com>
---
 src/glsl/list.h | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/src/glsl/list.h b/src/glsl/list.h
index ca6ee9d..68ab3fd 100644
--- a/src/glsl/list.h
+++ b/src/glsl/list.h
@@ -324,6 +324,8 @@ struct exec_list {
 
    const exec_node *get_tail() const;
    exec_node *get_tail();
+   
+   unsigned get_size();
 
    void push_head(exec_node *n);
    void push_tail(exec_node *n);
@@ -405,6 +407,19 @@ exec_list_get_tail(struct exec_list *list)
    return !exec_list_is_empty(list) ? list->tail_pred : NULL;
 }
 
+static inline unsigned
+exec_list_get_size(struct exec_list *list)
+{
+   unsigned size = 0;
+   
+   for (struct exec_node *node = list->head; node->next != NULL;
+	node = node->next) {
+      size++;
+   }
+   
+   return size;
+}
+
 static inline void
 exec_list_push_head(struct exec_list *list, struct exec_node *n)
 {
@@ -537,6 +552,11 @@ inline exec_node *exec_list::get_tail()
    return exec_list_get_tail(this);
 }
 
+inline unsigned exec_list::get_size()
+{
+   return exec_list_get_size(this);
+}
+
 inline void exec_list::push_head(exec_node *n)
 {
    exec_list_push_head(this, n);
-- 
1.9.3