From 4ad445aa8546d19a9bb9a34a5d3c27cd5a158fd9 Mon Sep 17 00:00:00 2001
From: Ben Johnson <benbjohnson@yahoo.com>
Date: Wed, 29 Jan 2014 22:50:29 -0500
Subject: Add freelist page type.

---
 page.go | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

(limited to 'page.go')

diff --git a/page.go b/page.go
index d45d336..12d1cee 100644
--- a/page.go
+++ b/page.go
@@ -11,9 +11,10 @@ const minKeysPerPage = 2
 const maxNodesPerPage = 65535
 
 const (
-	p_branch = 0x01
-	p_leaf   = 0x02
-	p_meta   = 0x04
+	p_branch   = 0x01
+	p_leaf     = 0x02
+	p_meta     = 0x04
+	p_freelist = 0x08
 )
 
 type pgid uint64
@@ -40,3 +41,8 @@ func (p *page) lnode(index int) *lnode {
 func (p *page) bnode(index int) *bnode {
 	return &((*[maxNodesPerPage]bnode)(unsafe.Pointer(&p.ptr)))[index]
 }
+
+// freelist retrieves a list of page ids from a freelist page.
+func (p *page) freelist() []pgid {
+	return ((*[maxNodesPerPage]pgid)(unsafe.Pointer(&p.ptr)))[0:p.count]
+}
-- 
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