BufferPoolManager类 参考

BufferPool的管理类 更多...

#include <disk_buffer_pool.h>

Public 成员函数
	BufferPoolManager (int memory_size=0)
RC	init (unique_ptr< DoubleWriteBuffer > dblwr_buffer)
RC	create_file (const char *file_name)
RC	open_file (LogHandler &log_handler, const char *file_name, DiskBufferPool *&bp)
RC	close_file (const char *file_name)
RC	flush_page (Frame &frame)
BPFrameManager &	get_frame_manager ()
DoubleWriteBuffer *	get_dblwr_buffer ()
RC	get_buffer_pool (int32_t id, DiskBufferPool *&bp)
	根据ID获取对应的BufferPool对象 更多...

Private 属性
BPFrameManager	frame_manager_ {"BufPool"}
unique_ptr< DoubleWriteBuffer >	dblwr_buffer_
common::Mutex	lock_
unordered_map< string, DiskBufferPool * >	buffer_pools_
unordered_map< int32_t, DiskBufferPool * >	id_to_buffer_pools_
atomic< int32_t >	next_buffer_pool_id_ {1}

详细描述

BufferPool的管理类

成员函数说明

create_file()

RC BufferPoolManager::create_file

(

const char *

file_name

)

Here don't care about the failure

get_buffer_pool()

RC BufferPoolManager::get_buffer_pool	(	int32_t	id,
		DiskBufferPool *&	bp
	)

根据ID获取对应的BufferPool对象

在做redo时，需要根据ID获取对应的BufferPool对象，然后让bufferPool对象自己做redo

参数

id	buffer pool id
bp	buffer pool 对象

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该类的文档由以下文件生成:

• src/observer/storage/buffer/disk_buffer_pool.h
• src/observer/storage/buffer/disk_buffer_pool.cpp