mir_server/Gateway/srvlib/include/memory/buffer_allocator.h

#ifndef _MSG_ALLOCATOR_H_
#define	_MSG_ALLOCATOR_H_

#include "os_def.h"
#include "x_tick.h"
#include "base_allocator.hpp"
#include "x_lock.h"

class BaseAllocator;

using namespace tick64;
using namespace lock;

class BufferAllocator: public BaseAllocator
{

public:
	static const unsigned int SmallBufferSize	= 64;	//С<><D0A1><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>С
	static const unsigned int MiddleBufferSize	= 256;	//<2F>е<EFBFBD><D0B5>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>С
	static const unsigned int LargeBufferSize	= 1024;	//<2F><><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>С

#pragma pack(push, 1)
	typedef struct tagBuffer
	{
		size_t		size_;		//<2F>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD>ݶδ<DDB6>С
		tagBuffer*	prev_buffer_;//ָ<><D6B8><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>
		int64_t		free_tick_;	//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٵ<EFBFBD>ʱ<EFBFBD><CAB1>
#ifdef _MEMORY_TRACE_
		tagBuffer*	next_buffer_;//ָ<><D6B8><EFBFBD><EFBFBD><EFBFBD>¸<EFBFBD><C2B8>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD>룬<EFBFBD><EBA3AC><EFBFBD>ڵ<EFBFBD><DAB5><EFBFBD>
		struct
		{
			const char* fn_;		//<2F><><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD>Ĵ<EFBFBD><C4B4><EFBFBD>λ<EFBFBD>ã<EFBFBD><C3A3><EFBFBD><EFBFBD>ڵ<EFBFBD><DAB5><EFBFBD>
			int line_;
		} al, fl;
		bool		used_flag_;	//<2F>Ƿ<EFBFBD>ʹ<EFBFBD>õı<C3B5><C4B1><EFBFBD>
#endif
	} BUFFER, *PBUFFER;
#pragma pack(pop)

	struct BufferStatic
	{
		size_t		alloc_size_;
		size_t		free_size_;
	};

	typedef struct tagAllocatorMemoryInfo
	{
		BufferStatic	SmallBuffer;
		BufferStatic	MiddleBuffer;
		BufferStatic	LargeBuffer;
		BufferStatic	SuperBuffer;
	} ALLOCATOR_MEMORY_INFO;

private:
	Mutex				buffer_lock_;			//<2F>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	PBUFFER				last_small_buffer_;		//ָ<><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD>С<EFBFBD><D0A1><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>
	PBUFFER				last_middle_buffer_;	//ָ<><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><D0B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>
	PBUFFER				last_large_buffer_;		//ָ<><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>еĴ<D0B5><C4B4><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>
	PBUFFER				last_super_buffer_;		//ָ<><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD>еij<D0B5><C4B3><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><D6B8>
#ifdef _MEMORY_TRACE_
	PBUFFER				last_alloced_buffer_;	//ָ<><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD>
#endif
	size_t				alloced_small_size_;	//<2F>ѱ<EFBFBD><D1B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С<EFBFBD><D0A1><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>С
	size_t				alloced_middle_size_;	//<2F>ѱ<EFBFBD><D1B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>С
	size_t				alloced_large_size_;	//<2F>ѱ<EFBFBD><D1B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ĵ<EFBFBD><C4B4><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>С
	size_t				alloced_super_size_;	//<2F>ѱ<EFBFBD><D1B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><C4B3><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>С
	size_t				freed_small_size_;		//<2F>ѱ<EFBFBD><D1B1>ͷŵ<CDB7>С<EFBFBD><D0A1><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>С
	size_t				freed_middle_size_;	//<2F>ѱ<EFBFBD><D1B1>ͷŵ<CDB7><C5B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>С
	size_t				freed_large_size_;		//<2F>ѱ<EFBFBD><D1B1>ͷŵĴ<C5B5><C4B4><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>С
	size_t				freed_super_size_;		//<2F>ѱ<EFBFBD><D1B1>ͷŵij<C5B5><C4B3><EFBFBD><EFBFBD>ڴ<EFBFBD><DAB4><EFBFBD><EFBFBD><EFBFBD>С

	bool				mult_thread_;
public:
	BufferAllocator(const char* namestr);
	~BufferAllocator();

#ifndef _MEMORY_TRACE_
	void* AllocBuffer(size_t size);
	void* ReAllocBuffer(void* ptr, size_t new_size);
	void FreeBuffer(void* ptr);
#else
	void* _AllocBuffer(size_t size, const char* fn, int line);
	void* _ReAllocBuffer(void* ptr, size_t new_size, const char* fn, int line);
	void _FreeBuffer(void* ptr, const char* fn, int line);
#endif

	void GetMemoryInfo(BufferAllocator::ALLOCATOR_MEMORY_INFO* pMemoryInfo);
	void CheckFreeBuffers();
	void SetMultiThread(bool flag);
	void GC();
};

#endif