From 0e4d77d424b2f18c76da7643de88b462b86310f2 Mon Sep 17 00:00:00 2001
From: Ben Johnson <benbjohnson@yahoo.com>
Date: Fri, 21 Mar 2014 22:34:54 -0600
Subject: Add 'bolt pages'.

---
 freelist.go | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'freelist.go')

diff --git a/freelist.go b/freelist.go
index 636ed22..d0b1492 100644
--- a/freelist.go
+++ b/freelist.go
@@ -70,6 +70,23 @@ func (f *freelist) release(txid txid) {
 	sort.Sort(reverseSortedPgids(f.ids))
 }
 
+// isFree returns whether a given page is in the free list.
+func (f *freelist) isFree(pgid pgid) bool {
+	for _, id := range f.ids {
+		if id == pgid {
+			return true
+		}
+	}
+	for _, m := range f.pending {
+		for _, id := range m {
+			if id == pgid {
+				return true
+			}
+		}
+	}
+	return false
+}
+
 // read initializes the freelist from a freelist page.
 func (f *freelist) read(p *page) {
 	ids := ((*[maxAllocSize]pgid)(unsafe.Pointer(&p.ptr)))[0:p.count]
-- 
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