fstream.hh File Reference

#include <seastar/core/file.hh>
#include <seastar/core/iostream.hh>
#include <seastar/core/shared_ptr.hh>
#include <seastar/core/internal/api-level.hh>
#include <seastar/util/modules.hh>
#include <cstdint>

Go to the source code of this file.

Classes
class	seastar::file_input_stream_history
struct	seastar::file_input_stream_options
	Data structure describing options for opening a file input stream. More...
struct	seastar::file_output_stream_options

Namespaces
	seastar
	Seastar API namespace.

Functions
input_stream< char >	seastar::make_file_input_stream (file file, uint64_t offset, uint64_t len, file_input_stream_options options={})
	Creates an input_stream to read a portion of a file. More...
input_stream< char >	seastar::make_file_input_stream (file file, uint64_t offset, file_input_stream_options={})
input_stream< char >	seastar::make_file_input_stream (file file, file_input_stream_options={})
future< output_stream< char > >	seastar::make_file_output_stream (file file, uint64_t buffer_size=8192) noexcept
future< output_stream< char > >	seastar::make_file_output_stream (file file, file_output_stream_options options) noexcept
future< data_sink >	seastar::make_file_data_sink (file, file_output_stream_options) noexcept

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Class Documentation

seastar::file_input_stream_options

struct seastar::file_input_stream_options

Class Members
size_t	buffer_size	I/O buffer size.
lw_shared_ptr< file_input_stream_history >	dynamic_adjustments	Input stream history, if null dynamic adjustments are disabled.
unsigned	read_ahead	Maximum number of extra read-ahead operations.

seastar::file_output_stream_options

struct seastar::file_output_stream_options

Class Members
unsigned	buffer_size
unsigned	preallocation_size	Preallocate extents. For large files, set to a large number (a few megabytes) to reduce fragmentation.
unsigned	write_behind	Number of buffers to write in parallel.