syscall_file Class Reference [File implementations]

Implementation of file based on UNIX syscalls. More...

#include <syscall_file.h>

Inheritance diagram for syscall_file:

Collaboration diagram for syscall_file:

List of all members.

Public Member Functions
	syscall_file (const std::string &filename, int mode, int disk=-1)
	constructs file object
request_ptr	aread (void *buffer, stxxl::int64 pos, size_t bytes, completion_handler on_cmpl)
	Schedules asynchronous read request to the file.
request_ptr	awrite (void *buffer, stxxl::int64 pos, size_t bytes, completion_handler on_cmpl)
	Schedules asynchronous write request to the file.

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Detailed Description

Implementation of file based on UNIX syscalls.

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Constructor & Destructor Documentation

syscall_file::syscall_file	(	const std::string &	filename,
		int	mode,
		int	disk = -1
	)

constructs file object

Parameters:

filename

path of file

Attention:

filename must be resided at memory disk partition

Parameters:

	mode	open mode, see stxxl::file::open_modes
	disk	disk(file) identifier

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Member Function Documentation

request_ptr syscall_file::aread	(	void *	buffer,
		stxxl::int64	pos,
		size_t	bytes,
		completion_handler	on_cmpl
	)			[virtual]

Schedules asynchronous read request to the file.

Parameters:

	buffer	pointer to memory buffer to read into
	pos	starting file position to read
	bytes	number of bytes to transfer
	on_cmpl	I/O completion handler

Returns:

request_ptr object, that can be used to track the status of the operation

Implements file.

References request_ptr::get(), and file::get_id().

request_ptr syscall_file::awrite	(	void *	buffer,
		stxxl::int64	pos,
		size_t	bytes,
		completion_handler	on_cmpl
	)			[virtual]

Schedules asynchronous write request to the file.

Parameters:

	buffer	pointer to memory buffer to write from
	pos	starting file position to write
	bytes	number of bytes to transfer
	on_cmpl	I/O completion handler

Returns:

request_ptr object, that can be used to track the status of the operation

Implements file.

References request_ptr::get(), and file::get_id().

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The documentation for this class was generated from the following files:

• syscall_file.h
• syscall_file.cpp