From abb64187311fd40ae0b41c9076e67aa6fab61e45 Mon Sep 17 00:00:00 2001
From: brion <noreply@github.com>
Date: Mon, 17 Oct 2022 17:15:21 +0800
Subject: [PATCH 1/3] add support for getting cache statistics

---
 immutable_tree.go | 28 ++++++++++++++++++++++++++++
 mutable_tree.go   | 28 ++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+)

diff --git a/immutable_tree.go b/immutable_tree.go
index 5a59b1afd..55dc54b61 100644
--- a/immutable_tree.go
+++ b/immutable_tree.go
@@ -320,3 +320,31 @@ func (t *ImmutableTree) nodeSize() int {
 	})
 	return size
 }
+
+func (tree *ImmutableTree) GetIAVLNodeCacheHitCnt() uint64 {
+	if tree.ndb.opts.Stat == nil {
+		return 0
+	}
+	return tree.ndb.opts.Stat.GetCacheHitCnt()
+}
+
+func (tree *ImmutableTree) GetIAVLNodeCacheMissCnt() uint64 {
+	if tree.ndb.opts.Stat == nil {
+		return 0
+	}
+	return tree.ndb.opts.Stat.GetCacheMissCnt()
+}
+
+func (tree *ImmutableTree) GetIAVLNodeFastCacheHitCnt() uint64 {
+	if tree.ndb.opts.Stat == nil {
+		return 0
+	}
+	return tree.ndb.opts.Stat.GetFastCacheHitCnt()
+}
+
+func (tree *ImmutableTree) GetIAVLNodeFastCacheMissCnt() uint64 {
+	if tree.ndb.opts.Stat == nil {
+		return 0
+	}
+	return tree.ndb.opts.Stat.GetFastCacheMissCnt()
+}
diff --git a/mutable_tree.go b/mutable_tree.go
index 5579ef591..4221b835d 100644
--- a/mutable_tree.go
+++ b/mutable_tree.go
@@ -1236,3 +1236,31 @@ func (tree *MutableTree) addOrphans(orphans []*Node) error {
 	}
 	return nil
 }
+
+func (tree *MutableTree) GetIAVLNodeCacheHitCnt() uint64 {
+	if tree.ndb.opts.Stat == nil {
+		return 0
+	}
+	return tree.ndb.opts.Stat.GetCacheHitCnt()
+}
+
+func (tree *MutableTree) GetIAVLNodeCacheMissCnt() uint64 {
+	if tree.ndb.opts.Stat == nil {
+		return 0
+	}
+	return tree.ndb.opts.Stat.GetCacheMissCnt()
+}
+
+func (tree *MutableTree) GetIAVLNodeFastCacheHitCnt() uint64 {
+	if tree.ndb.opts.Stat == nil {
+		return 0
+	}
+	return tree.ndb.opts.Stat.GetFastCacheHitCnt()
+}
+
+func (tree *MutableTree) GetIAVLNodeFastCacheMissCnt() uint64 {
+	if tree.ndb.opts.Stat == nil {
+		return 0
+	}
+	return tree.ndb.opts.Stat.GetFastCacheMissCnt()
+}

From b1c0e30cc5b0a22bfcb95d345e523e2819b04951 Mon Sep 17 00:00:00 2001
From: brion <noreply@github.com>
Date: Mon, 17 Oct 2022 17:15:53 +0800
Subject: [PATCH 2/3] add support for getting cache statistics

---
 immutable_tree.go | 28 ----------------------------
 1 file changed, 28 deletions(-)

diff --git a/immutable_tree.go b/immutable_tree.go
index 55dc54b61..5a59b1afd 100644
--- a/immutable_tree.go
+++ b/immutable_tree.go
@@ -320,31 +320,3 @@ func (t *ImmutableTree) nodeSize() int {
 	})
 	return size
 }
-
-func (tree *ImmutableTree) GetIAVLNodeCacheHitCnt() uint64 {
-	if tree.ndb.opts.Stat == nil {
-		return 0
-	}
-	return tree.ndb.opts.Stat.GetCacheHitCnt()
-}
-
-func (tree *ImmutableTree) GetIAVLNodeCacheMissCnt() uint64 {
-	if tree.ndb.opts.Stat == nil {
-		return 0
-	}
-	return tree.ndb.opts.Stat.GetCacheMissCnt()
-}
-
-func (tree *ImmutableTree) GetIAVLNodeFastCacheHitCnt() uint64 {
-	if tree.ndb.opts.Stat == nil {
-		return 0
-	}
-	return tree.ndb.opts.Stat.GetFastCacheHitCnt()
-}
-
-func (tree *ImmutableTree) GetIAVLNodeFastCacheMissCnt() uint64 {
-	if tree.ndb.opts.Stat == nil {
-		return 0
-	}
-	return tree.ndb.opts.Stat.GetFastCacheMissCnt()
-}

From 408d4b9dc0dc96199b956822893ed639c2f1dc4a Mon Sep 17 00:00:00 2001
From: brion <noreply@github.com>
Date: Tue, 18 Oct 2022 23:20:56 +0800
Subject: [PATCH 3/3] immutable tree implement cache stat interface

---
 immutable_tree.go | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/immutable_tree.go b/immutable_tree.go
index 5a59b1afd..e2a135c77 100644
--- a/immutable_tree.go
+++ b/immutable_tree.go
@@ -320,3 +320,31 @@ func (t *ImmutableTree) nodeSize() int {
 	})
 	return size
 }
+
+func (t *ImmutableTree) GetIAVLNodeCacheHitCnt() uint64 {
+	if t.ndb.opts.Stat == nil {
+		return 0
+	}
+	return t.ndb.opts.Stat.GetCacheHitCnt()
+}
+
+func (t *ImmutableTree) GetIAVLNodeCacheMissCnt() uint64 {
+	if t.ndb.opts.Stat == nil {
+		return 0
+	}
+	return t.ndb.opts.Stat.GetCacheMissCnt()
+}
+
+func (t *ImmutableTree) GetIAVLNodeFastCacheHitCnt() uint64 {
+	if t.ndb.opts.Stat == nil {
+		return 0
+	}
+	return t.ndb.opts.Stat.GetFastCacheHitCnt()
+}
+
+func (t *ImmutableTree) GetIAVLNodeFastCacheMissCnt() uint64 {
+	if t.ndb.opts.Stat == nil {
+		return 0
+	}
+	return t.ndb.opts.Stat.GetFastCacheMissCnt()
+}