From 442f9dcc5cdb2ccc976a988ea3bf76dbcd52dedd Mon Sep 17 00:00:00 2001
From: "kevin.zhao" <kevin.zhao@higogame.net>
Date: Fri, 10 Oct 2025 14:33:33 +0800
Subject: [PATCH 1/2] init sync pool when create

---
 pkg/xsync/sync_pool.go | 18 +++---------------
 1 file changed, 3 insertions(+), 15 deletions(-)

diff --git a/pkg/xsync/sync_pool.go b/pkg/xsync/sync_pool.go
index 571c6de..fb156db 100644
--- a/pkg/xsync/sync_pool.go
+++ b/pkg/xsync/sync_pool.go
@@ -3,37 +3,25 @@ package xsync
 import "sync"
 
 type SyncPool[T any] struct {
-	New  func() T
 	pool sync.Pool
-	once sync.Once
 }
 
 // NewSyncPool creates a new SyncPool with specified init function
 func NewSyncPool[T any](new func() T) *SyncPool[T] {
 	sp := &SyncPool[T]{
-		New: new,
+		pool: sync.Pool{New: func() interface{} {
+			return new()
+		}},
 	}
-	sp.init()
 	return sp
 }
 
-// init initializes the SyncPool
-func (s *SyncPool[T]) init() {
-	s.once.Do(func() {
-		s.pool.New = func() interface{} {
-			return s.New()
-		}
-	})
-}
-
 // Get wraps sync.Pool.Get.
 func (s *SyncPool[T]) Get() T {
-	s.init()
 	return s.pool.Get().(T)
 }
 
 // Put wraps sync.Pool.Put.
 func (s *SyncPool[T]) Put(x T) {
-	s.init()
 	s.pool.Put(x)
 }

From 50ad8864952eeb0f615ef4eb9d5dd6bfd07bcf8d Mon Sep 17 00:00:00 2001
From: "kevin.zhao" <kevin.zhao@higogame.net>
Date: Fri, 10 Oct 2025 14:35:18 +0800
Subject: [PATCH 2/2] fix

---
 pkg/xsync/README.md | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/pkg/xsync/README.md b/pkg/xsync/README.md
index 79be085..3a25552 100644
--- a/pkg/xsync/README.md
+++ b/pkg/xsync/README.md
@@ -343,19 +343,18 @@ func (s *SyncMap[K, V]) ToMap() map[K]V
 ToMap returns a copy of the map as a regular map.
 
 <a name="SyncPool"></a>
-## type [SyncPool](<https://github.com/dashjay/xiter/blob/main/pkg/xsync/sync_pool.go#L5-L9>)
+## type [SyncPool](<https://github.com/dashjay/xiter/blob/main/pkg/xsync/sync_pool.go#L5-L7>)
 
 
 
 ```go
 type SyncPool[T any] struct {
-    New func() T
     // contains filtered or unexported fields
 }
 ```
 
 <a name="NewSyncPool"></a>
-### func [NewSyncPool](<https://github.com/dashjay/xiter/blob/main/pkg/xsync/sync_pool.go#L12>)
+### func [NewSyncPool](<https://github.com/dashjay/xiter/blob/main/pkg/xsync/sync_pool.go#L10>)
 
 ```go
 func NewSyncPool[T any](new func() T) *SyncPool[T]
@@ -364,7 +363,7 @@ func NewSyncPool[T any](new func() T) *SyncPool[T]
 NewSyncPool creates a new SyncPool with specified init function
 
 <a name="SyncPool[T].Get"></a>
-### func \(\*SyncPool\[T\]\) [Get](<https://github.com/dashjay/xiter/blob/main/pkg/xsync/sync_pool.go#L30>)
+### func \(\*SyncPool\[T\]\) [Get](<https://github.com/dashjay/xiter/blob/main/pkg/xsync/sync_pool.go#L20>)
 
 ```go
 func (s *SyncPool[T]) Get() T
@@ -373,7 +372,7 @@ func (s *SyncPool[T]) Get() T
 Get wraps sync.Pool.Get.
 
 <a name="SyncPool[T].Put"></a>
-### func \(\*SyncPool\[T\]\) [Put](<https://github.com/dashjay/xiter/blob/main/pkg/xsync/sync_pool.go#L36>)
+### func \(\*SyncPool\[T\]\) [Put](<https://github.com/dashjay/xiter/blob/main/pkg/xsync/sync_pool.go#L25>)
 
 ```go
 func (s *SyncPool[T]) Put(x T)