Factory for. More...

#include <writer.hpp>

Inheritance diagram for file_writer_factory:

Collaboration diagram for file_writer_factory:

Public Member Functions
	file_writer_factory (std::wstring const &file, thread_pool &tpool, file_writer_flags={})

virtual std::unique_ptr< writer_base >	open (aio_buffer_pool &pool, uint64_t offset, writer_base::progress_cb_t progress_cb=nullptr, size_t max_buffers=0) override
	Creates a writer. More...

virtual std::unique_ptr< writer_factory >	clone () const override
	Clones the factory.

virtual bool	offsetable () const override
	If true, writer can be opened from any position, not just the beginning, such as file_writer.

virtual uint64_t	size () const override
	Some writers, e.g. for files, may have a pre-existing size.

virtual datetime	mtime () const override

virtual bool	set_mtime (datetime const &t) override
	Sets the mtime of the target. More...

virtual bool	multiple_buffer_usage () const override
	Whether the writer can benefit from multiple buffers.

virtual size_t	preferred_buffer_count () const override

Public Member Functions inherited from writer_factory
	writer_factory (std::wstring const &name)

	writer_factory (std::wstring &&name)

std::wstring const &	name () const

virtual size_t	min_buffer_usage () const
	The writer requires at least this many buffers.

Additional Inherited Members
Protected Member Functions inherited from writer_factory
	writer_factory (writer_factory const &)=default

Detailed Description

Factory for.

Member Function Documentation

virtual std::unique_ptr<writer_base> open	(	aio_buffer_pool &	pool,
		uint64_t	offset,
		writer_base::progress_cb_t	progress_cb = `nullptr`,
		size_t	max_buffers = `0`
	)

overridevirtual

Creates a writer.

The pool must live longer than the returned writer.

Offsetable writers can be opened at any position. If the writer is not seekable, pass an offset of 0 or open will fail.

virtual bool set_mtime ( datetime const & )

overridevirtual

Sets the mtime of the target.

If there are still writers open for the entity represented by the factory, the mtime might change again as the writers are closed.

Reimplemented from writer_factory.

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