acl/lib_acl_cpp/include/acl_cpp/stream/aio_handle.hpp

#pragma once
#include "../acl_cpp_define.hpp"
#include "../stdlib/noncopyable.hpp"

struct ACL_AIO;
struct ACL_EVENT;

namespace acl
{

// <20>¼<EFBFBD><C2BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
typedef enum
{
	ENGINE_SELECT,  // select ģʽ(֧<><D6A7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ƽ̨)
	ENGINE_POLL,    // poll ģʽ(<28><> UNIX ƽ̨)
	ENGINE_KERNEL,  // kernel ģʽ(win32: iocp, Linux: epoll, FreeBsd: kqueue, Solaris: devpoll
	ENGINE_WINMSG   // win32 GUI <20><>Ϣģʽ
} aio_handle_type;

/**
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>IO<EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>࣬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>װ<EFBFBD><EFBFBD>ϵͳ<EFBFBD><EFBFBD> select/poll/epoll/kqueue/devpoll/iocp,
 */

class aio_timer_callback;
class aio_delay_free;
class aio_timer_delay_free;

class ACL_CPP_API aio_handle : private noncopyable
{
public:
	/**
	 * <EFBFBD><EFBFBD><EFBFBD>캯<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Զ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>IO<EFBFBD>¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD>棬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>л<EFBFBD><EFBFBD>Զ<EFBFBD><EFBFBD>ͷ<EFBFBD>
	 * @param engine_type {aio_handle_type} <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 *  ENGINE_SELECT: select <EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD>֧<EFBFBD><EFBFBD> win32/unix ƽ̨
	 *  ENGINE_POLL: poll <EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD>֧<EFBFBD><EFBFBD> unix ƽ̨
	 *  ENGINE_KERNEL: <EFBFBD>Զ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݸ<EFBFBD><EFBFBD><EFBFBD>ϵͳƽ̨<EFBFBD><EFBFBD>֧<EFBFBD>ֵĸ<EFBFBD>Ч<EFBFBD>ں<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 *  ENGINE_WINMSG: win32 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD>֧<EFBFBD><EFBFBD> win32 ƽ̨
	 * @param nMsg {unsigned int} <EFBFBD><EFBFBD> engine_type Ϊ ENGINE_WINMSG<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ
	 *  <EFBFBD><EFBFBD><EFBFBD><EFBFBD> 0 ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϣ<EFBFBD>󶨣<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȱʡ<EFBFBD><EFBFBD>Ϣ<EFBFBD>󶨣<EFBFBD>
	 *  <EFBFBD><EFBFBD> engine_type Ϊ<EFBFBD><EFBFBD> ENGINE_WINMSG ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 *  
	 */
	aio_handle(aio_handle_type engine_type = ENGINE_SELECT,
		unsigned int nMsg = 0);

	/**
	 * <EFBFBD><EFBFBD><EFBFBD>캯<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>߽<EFBFBD> ACL_AIO <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>в<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * <EFBFBD>Զ<EFBFBD><EFBFBD>ͷŸ<EFBFBD> ACL_AIO <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @param handle {ACL_AIO*} ACL_AIO <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 */
	aio_handle(ACL_AIO* handle);

	virtual ~aio_handle(void);

	/**
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ᱻ<EFBFBD><EFBFBD><EFBFBD>еĻ<EFBFBD><EFBFBD><EFBFBD>
	 * <EFBFBD><EFBFBD><EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>̳У<EFBFBD>һ<EFBFBD><EFBFBD> aio_handle <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȱʡ
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @param onoff {bool} <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 */
	void keep_read(bool onoff);

	/**
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>˳<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵĹ<EFBFBD><EFBFBD><EFBFBD>
	 * @return {bool}
	 */
	bool keep_read(void) const;

	/**
	 * <EFBFBD><EFBFBD><EFBFBD>ö<EFBFBD>ʱ<EFBFBD><EFBFBD>
	 * @param callback {aio_timer_callback*} <EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD>ص<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @param delay {int64} <EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(΢<EFBFBD><EFBFBD>)
	 * @param id {unsigned int} <EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ID <EFBFBD><EFBFBD>
	 * @return {int64} <EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Чʱ<EFBFBD><EFBFBD>(<EFBFBD><EFBFBD>1970.1.1<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>΢<EFBFBD><EFBFBD><EFBFBD><EFBFBD>)
	 */
#if defined(_WIN32) || defined(_WIN64)
	__int64 set_timer(aio_timer_callback* callback,
		__int64 delay, unsigned int id = 0);
#else
	long long int set_timer(aio_timer_callback* callback,
		long long int delay, unsigned int id = 0);
#endif

	/**
	 * ɾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD>
	 * @param callback {aio_timer_callback*} <EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD>ص<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @return {time_t} <EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Чʱ<EFBFBD><EFBFBD>(<EFBFBD><EFBFBD>1970.1.1<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>΢<EFBFBD><EFBFBD><EFBFBD><EFBFBD>)
	 */
#if defined(_WIN32) || defined(_WIN64)
	__int64 del_timer(aio_timer_callback* callback);
#else
	long long int del_timer(aio_timer_callback* callback);
#endif

	/**
	 * ɾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD> ID <EFBFBD>ŵĶ<EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @param callback {aio_timer_callback*} <EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD>ص<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @param id {unsigned int} <EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD>ij<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> ID <EFBFBD><EFBFBD>
	 * @return {time_t} <EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Чʱ<EFBFBD><EFBFBD>(<EFBFBD><EFBFBD>1970.1.1<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>΢<EFBFBD><EFBFBD><EFBFBD><EFBFBD>)
	 */
#if defined(_WIN32) || defined(_WIN64)
	__int64 del_timer(aio_timer_callback* callback, unsigned int id);
#else
	long long del_timer(aio_timer_callback* callback, unsigned int id);
#endif

	/**
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>״̬ʱ<EFBFBD><EFBFBD><EFBFBD>û<EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD>޷<EFBFBD><EFBFBD>ͷŸö<EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڴ<EFBFBD>й¶<EFBFBD><EFBFBD>
	 * ͨ<EFBFBD><EFBFBD><EFBFBD>˺<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Խ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>״̬<EFBFBD>Ķ<EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>δ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>״̬ʱ<EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD>
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͷ<EFBFBD>(<EFBFBD><EFBFBD><EFBFBD><EFBFBD> aio_delay_free::destroy())<EFBFBD><EFBFBD><EFBFBD>Ӷ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ա<EFBFBD><EFBFBD><EFBFBD>
	 * <EFBFBD>ڴ<EFBFBD>й¶<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @param callback {aio_delay_free*}
	 */
	void delay_free(aio_delay_free* callback);

	/**
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD> ACL_AIO <EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @return {ACL_AIO*}
	 */
	ACL_AIO* get_handle(void) const;

	/**
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @return {aio_handle_type}
	 */
	aio_handle_type get_engine_type(void) const;

	/**
	 * <EFBFBD><EFBFBD><EFBFBD>õ<EFBFBD>ǰ<EFBFBD><EFBFBD><EFBFBD>ڼ<EFBFBD><EFBFBD>ص<EFBFBD><EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @return {int}
	 */
	int length(void) const;

	/**
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD><EFBFBD>״̬<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>׼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD>Ĵ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @return {bool} <EFBFBD>Ƿ<EFBFBD>Ӧ<EFBFBD><EFBFBD>ֹ<EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 */
	bool check(void);

	/**
	 * <EFBFBD><EFBFBD><EFBFBD>ñ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD>ѭ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @return {int}
	 */
	int last_nready(void) const;

	/**
	 * ֪ͨ<EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֹ
	 */
	void stop(void);

	/**
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD>״̬
	 */
	void reset(void);

	/**
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD> DNS <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD>б<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʽ<EFBFBD><EFBFBD>ip1:port1;ip2:port2...
	 * @param addrs {const char*} DNS <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><EFBFBD><EFBFBD>磺8.8.8.8:53
	 * @param timeout {int} DNS <EFBFBD><EFBFBD>ѯ<EFBFBD><EFBFBD>ʱʱ<EFBFBD>䣨<EFBFBD>룩
	 */
	void set_dns(const char* addrs, int timeout);

public:
	/**
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѭ<EFBFBD><EFBFBD><EFBFBD>ĵȴ<EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD>е<EFBFBD><EFBFBD>뼶<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @param n {int} <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> select/poll/epoll/kqueue/devpoll
	 *  ʱ<EFBFBD><EFBFBD><EFBFBD>뼶<EFBFBD>ȴ<EFBFBD>ʱ<EFBFBD><EFBFBD>
	 */
	void set_delay_sec(int n);

	/**
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѭ<EFBFBD><EFBFBD><EFBFBD>ĵȴ<EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD>е<EFBFBD>΢<EFBFBD>뼶<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * @param n {int} <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> select/poll/epoll/kqueue/devpoll
	 *  ʱ<EFBFBD><EFBFBD>΢<EFBFBD>뼶<EFBFBD>ȴ<EFBFBD>ʱ<EFBFBD><EFBFBD>
	 */
	void set_delay_usec(int n);

	/**
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD>ѭ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>״̬<EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
	 * <EFBFBD>ڲ<EFBFBD>ȱʡֵ 100 ms
	 */
	void set_check_inter(int n);

	/**
	 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD>Ķ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С
	 * @param n {int} <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>С
	 */
	void set_rbuf_size(int n);

protected:
	friend class aio_stream;

	/**
	 * <EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 1
	 */
	void increase(void);

	/**
	 * <EFBFBD><EFBFBD><EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 1 ʱ<EFBFBD>Ļص<EFBFBD><EFBFBD>麯<EFBFBD><EFBFBD>
	 */
	virtual void on_increase(void) {}

	/**
	 * <EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 1
	 */
	void decrease(void);

	/**
	 * <EFBFBD><EFBFBD><EFBFBD>첽<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 1 ʱ<EFBFBD>Ļص<EFBFBD><EFBFBD>麯<EFBFBD><EFBFBD>
	 */
	virtual void on_decrease(void) {}

private:
	ACL_AIO* aio_;
	bool inner_alloc_;
	bool stop_;
	int  nstream_;
	aio_handle_type engine_type_;
	aio_timer_delay_free* delay_free_timer_;

	void destroy_timer(aio_timer_callback* callback);
	static void on_timer_callback(int event_type, ACL_EVENT*,
		aio_timer_callback *callback);
};

} // namespace acl