From c270d033fa04873ee7a8925dbb00cae5edc4555c Mon Sep 17 00:00:00 2001
From: chai <chaifix@163.com>
Date: Sat, 30 Mar 2019 11:59:35 +0800
Subject: *misc

---
 source/modules/asura-utils/io/data_buffer.h | 35 ++++++++++++++++++++++++-----
 1 file changed, 30 insertions(+), 5 deletions(-)

(limited to 'source/modules/asura-utils/io/data_buffer.h')

diff --git a/source/modules/asura-utils/io/data_buffer.h b/source/modules/asura-utils/io/data_buffer.h
index 445bdf4..61d158b 100644
--- a/source/modules/asura-utils/io/data_buffer.h
+++ b/source/modules/asura-utils/io/data_buffer.h
@@ -22,17 +22,33 @@ namespace AsuraEngine
 			LUAX_DECL_FACTORY(DataBuffer);
 
 			DataBuffer(DataBuffer& src);
-			DataBuffer(std::size_t size);
+			DataBuffer(std::size_t capacity);
 			DataBuffer(const void* bytes, std::size_t size);
 			~DataBuffer();
 
 			byte* GetData();
 			size_t GetSize();
-
-			void Refactor(size_t size);
-			size_t Load(DataBuffer& db);
-			size_t Load(const void* bytes, std::size_t size);
+			size_t GetCapacity();
+
+			///
+			/// 修改容量，并清空
+			///
+			void Refactor(size_t capacity);
+
+			///
+			/// 拷贝数据源到此缓冲
+			///
+			void Load(DataBuffer& db);
+			void Load(const void* bytes, std::size_t size);
+
+			///
+			/// 绑定bytes，并拥有所有权，capacity为size
+			///
 			void Move(void* bytes, std::size_t size);
+
+			///
+			/// 清理缓冲
+			///
 			void Clear();
 
 			void Lock();
@@ -40,14 +56,23 @@ namespace AsuraEngine
 			
 		private:
 
+			///
+			/// Buffer首地址和里面数据的长度
+			///
 			byte* mBytes;
 			size_t mSize;
 
+			///
+			/// Buffer容量。
+			///
+			size_t mCapacity;
+
 			AEThreading::Mutex mMutex;
 
 			LUAX_DECL_METHOD(_New);
 			LUAX_DECL_METHOD(_GetData);
 			LUAX_DECL_METHOD(_GetSize);
+			LUAX_DECL_METHOD(_GetCapacity);
 			LUAX_DECL_METHOD(_Refactor);
 			LUAX_DECL_METHOD(_Load);
 			LUAX_DECL_METHOD(_Clear);
-- 
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