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STXXL
1.4.0
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STXXL
1.4.0
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Encapsulate the configuration of one "disk". The disk is actually a file I/O object which block_manager uses to read/write blocks.
Public Member Functions | |
| disk_config () | |
| default constructor More... | |
| disk_config (const std::string &path, uint64 size, const std::string &fileio) | |
| initializing constructor, also parses fileio parameter More... | |
| disk_config (const std::string &line) | |
| initializing constructor, parse full line as in config files More... | |
| std::string | fileio_string () const |
| return formatted fileio name and optional configuration parameters More... | |
| void | parse_fileio () |
| parse the "io_impl" parameter into the optional parameter fields. More... | |
| void | parse_line (const std::string &line) |
| parse a disk=<path>,<size>,<fileio> options line into disk_config, throws std::runtime_error on parse errors. More... | |
Public Attributes | |
Basic Disk Configuration Parameters | |
| std::string | path |
| the file path used by the io implementation More... | |
| uint64 | size |
| file size to initially allocate More... | |
| std::string | io_impl |
| io implementation to access file More... | |
Optional Disk / File I/O Implementation Parameters | |
| enum | direct_type { DIRECT_OFF = 0, DIRECT_TRY = 1, DIRECT_ON = 2 } |
| tristate variable: direct=0 -> force direct OFF, direct=1 -> try direct ON, if fails print warning and open without direct, direct=2 -> force direct ON, fail if unavailable. More... | |
| bool | autogrow |
| autogrow file if more disk space is needed, automatically set if size == 0. More... | |
| bool | delete_on_exit |
| delete file on program exit (default for autoconfigurated files) More... | |
| enum stxxl::disk_config::direct_type | direct |
| bool | flash |
| marks flash drives (configuration entries with flash= instead of disk=) More... | |
| int | queue |
| select request queue for disk. Use different queues for files on different disks. queue=-1 -> default queue (one for each disk). More... | |
| bool | raw_device |
| turned on by syscall fileio when the path points to a raw block device More... | |
| bool | unlink_on_open |
| unlink file immediately after opening (available on most Unix) More... | |
| stxxl::disk_config::disk_config | ( | ) |
default constructor
Definition at line 190 of file config.cpp.
| stxxl::disk_config::disk_config | ( | const std::string & | path, |
| uint64 | size, | ||
| const std::string & | fileio | ||
| ) |
initializing constructor, also parses fileio parameter
Definition at line 201 of file config.cpp.
References parse_fileio().
| stxxl::disk_config::disk_config | ( | const std::string & | line | ) |
initializing constructor, parse full line as in config files
Definition at line 217 of file config.cpp.
References parse_line().
| std::string stxxl::disk_config::fileio_string | ( | ) | const |
return formatted fileio name and optional configuration parameters
Definition at line 381 of file config.cpp.
References autogrow, stxxl::file::DEFAULT_QUEUE, delete_on_exit, direct, DIRECT_OFF, DIRECT_ON, DIRECT_TRY, flash, io_impl, queue, raw_device, and unlink_on_open.
Referenced by stxxl::block_manager::block_manager().
| void stxxl::disk_config::parse_fileio | ( | ) |
parse the "io_impl" parameter into the optional parameter fields.
Definition at line 292 of file config.cpp.
References autogrow, delete_on_exit, direct, DIRECT_OFF, DIRECT_ON, DIRECT_TRY, io_impl, raw_device, stxxl::split(), STXXL_THROW, and unlink_on_open.
Referenced by disk_config(), and parse_line().
| void stxxl::disk_config::parse_line | ( | const std::string & | line | ) |
parse a disk=<path>,<size>,<fileio> options line into disk_config, throws std::runtime_error on parse errors.
Definition at line 230 of file config.cpp.
References autogrow, stxxl::file::DEFAULT_QUEUE, delete_on_exit, direct, DIRECT_TRY, flash, io_impl, parse_fileio(), stxxl::parse_SI_IEC_size(), path, size, stxxl::split(), STXXL_THROW, stxxl::to_str(), and unlink_on_open.
Referenced by disk_config(), and stxxl::config::load_config_file().
| bool stxxl::disk_config::autogrow |
autogrow file if more disk space is needed, automatically set if size == 0.
Definition at line 77 of file config.h.
Referenced by stxxl::create_file(), fileio_string(), stxxl::config::load_default_config(), parse_fileio(), and parse_line().
| bool stxxl::disk_config::delete_on_exit |
delete file on program exit (default for autoconfigurated files)
Definition at line 80 of file config.h.
Referenced by stxxl::create_file(), fileio_string(), stxxl::config::load_default_config(), parse_fileio(), and parse_line().
| enum stxxl::disk_config::direct_type stxxl::disk_config::direct |
Referenced by stxxl::create_file(), fileio_string(), parse_fileio(), and parse_line().
| bool stxxl::disk_config::flash |
marks flash drives (configuration entries with flash= instead of disk=)
Definition at line 88 of file config.h.
Referenced by fileio_string(), stxxl::config::load_config_file(), and parse_line().
| std::string stxxl::disk_config::io_impl |
io implementation to access file
Definition at line 48 of file config.h.
Referenced by stxxl::create_file(), fileio_string(), parse_fileio(), and parse_line().
| std::string stxxl::disk_config::path |
the file path used by the io implementation
Definition at line 42 of file config.h.
Referenced by stxxl::block_manager::block_manager(), stxxl::create_file(), stxxl::config::load_default_config(), and parse_line().
| int stxxl::disk_config::queue |
select request queue for disk. Use different queues for files on different disks. queue=-1 -> default queue (one for each disk).
Definition at line 92 of file config.h.
Referenced by stxxl::block_manager::block_manager(), stxxl::create_file(), and fileio_string().
| bool stxxl::disk_config::raw_device |
turned on by syscall fileio when the path points to a raw block device
Definition at line 95 of file config.h.
Referenced by stxxl::create_file(), fileio_string(), and parse_fileio().
| uint64 stxxl::disk_config::size |
file size to initially allocate
Definition at line 45 of file config.h.
Referenced by stxxl::block_manager::block_manager(), stxxl::create_file(), stxxl::disk_allocator::disk_allocator(), and parse_line().
| bool stxxl::disk_config::unlink_on_open |
unlink file immediately after opening (available on most Unix)
Definition at line 98 of file config.h.
Referenced by stxxl::create_file(), fileio_string(), parse_fileio(), and parse_line().
1.8.5 
