mdbx Namespace Reference

The libmdbx C++ API namespace. More...

Namespaces
namespace	allocation_aware_details

Classes
struct	bad_map_id
struct	bad_transaction
struct	bad_value_size
class	buffer
	The chunk of data stored inside the buffer or located outside it. More...
struct	buffer_pair_spec
class	cursor
	Unmanaged cursor. More...
class	cursor_managed
	Managed cursor. More...
struct	dangling_map_id
struct	db_corrupted
struct	db_full
struct	db_invalid
struct	db_too_large
struct	db_unable_extend
struct	db_version_mismatch
struct	db_wanna_write_for_recovery
struct	default_capacity_policy
struct	duplicated_lck_file
class	env
	Unmanaged database environment. More...
class	env_managed
	Managed database environment. More...
class	error
	Implements error information and throwing corresponding exceptions. More...
class	exception
	Base class for all libmdbx's exceptions that are corresponds to libmdbx errors. More...
class	exception_thunk
	Transfers C++ exceptions thru C callbacks. More...
class	fatal
	Fatal exception that lead termination anyway in dangerous unrecoverable cases. More...
struct	from_base58
	Base58 decoder which satisfy SliceTranscoder concept. More...
struct	from_base64
	Base64 decoder which satisfy SliceTranscoder concept. More...
struct	from_hex
	Hexadecimal decoder which satisfy SliceTranscoder concept. More...
struct	incompatible_operation
struct	internal_page_full
struct	internal_problem
struct	key_exists
struct	key_mismatch
struct	map_handle
	A handle for an individual table (aka key-value space, maps or sub-database) in the environment. More...
struct	max_maps_reached
struct	max_readers_reached
struct	multivalue
struct	mvcc_retarded
struct	no_data
struct	not_found
struct	operation_not_permitted
struct	pair
	Combines pair of slices for key and value to represent result of certain operations. More...
struct	pair_result
	Combines pair of slices for key and value with boolean flag to represent result of certain operations. More...
struct	permission_denied_or_not_writeable
struct	reader_slot_busy
struct	remote_media
struct	slice
	References a data located outside the slice. More...
struct	something_busy
struct	thread_mismatch
struct	to_base58
	Base58 encoder which satisfy SliceTranscoder concept. More...
struct	to_base64
	Base64 encoder which satisfy SliceTranscoder concept. More...
struct	to_hex
	Hexadecimal encoder which satisfy SliceTranscoder concept. More...
struct	transaction_full
struct	transaction_ousted
struct	transaction_overlapping
class	txn
	Unmanaged database transaction. More...
class	txn_managed
	Managed database transaction. More...
struct	value_result
	Combines data slice with boolean flag to represent result of certain operations. More...

Concepts
concept	MutableByteProducer
concept	ImmutableByteProducer
concept	SliceTranscoder

Typedefs
using	byte = char8_t
using	version_info = ::MDBX_version_info
	libmdbx version information,
using	build_info = ::MDBX_build_info
	libmdbx build information
using	legacy_allocator = ::std::string::allocator_type
	Legacy allocator but it is recommended to use polymorphic_allocator.
using	polymorphic_allocator = ::std::pmr::string::allocator_type
	Default polymorphic allocator for modern code.
using	default_allocator = polymorphic_allocator
using	default_buffer = buffer<default_allocator, default_capacity_policy>
	Default buffer.
template<class ALLOCATOR = default_allocator>
using	string = ::std::basic_string<char, ::std::char_traits<char>, ALLOCATOR>
	Default single-byte string.
using	filehandle = ::mdbx_filehandle_t
using	path = ::mdbx::filesystem::path
using	duration = ::std::chrono::duration<unsigned, ::std::ratio<1, 65536>>
	Duration in 1/65536 units of second.
template<typename BUFFER >
using	buffer_pair = buffer_pair_spec<typename BUFFER::allocator_type, typename BUFFER::reservation_policy>
using	comparator = ::MDBX_cmp_func *

Enumerations
enum	loop_control { continue_loop = 0 , exit_loop = INT32_MIN }
	Loop control constants for readers enumeration functor and other cases. More...
enum class	key_mode { key_mode::usual = MDBX_DB_DEFAULTS , key_mode::reverse = MDBX_REVERSEKEY , key_mode::ordinal = MDBX_INTEGERKEY , key_mode::msgpack = -1 }
	Kinds of the keys and corresponding modes of comparing it. More...
enum class	value_mode {   value_mode::single = MDBX_DB_DEFAULTS , value_mode::multi = MDBX_DUPSORT , value_mode::multi_reverse = MDBX_DUPSORT | MDBX_REVERSEDUP , value_mode::multi_samelength = MDBX_DUPSORT | MDBX_DUPFIXED ,   value_mode::multi_ordinal = MDBX_DUPSORT | MDBX_DUPFIXED | MDBX_INTEGERDUP , value_mode::multi_reverse_samelength , value_mode::msgpack = -1 }
	Kind of the values and sorted multi-values with corresponding comparison. More...
enum	put_mode { insert_unique = MDBX_NOOVERWRITE , upsert = MDBX_UPSERT , update = MDBX_CURRENT }
	Key-value pairs put mode. More...

Functions
constexpr const version_info &	get_version () noexcept
	Returns libmdbx version information.
constexpr const build_info &	get_build () noexcept
	Returns libmdbx build information.
LIBMDBX_API void	throw_too_small_target_buffer ()
LIBMDBX_API void	throw_max_length_exceeded ()
LIBMDBX_API void	throw_out_range ()
LIBMDBX_API void	throw_allocators_mismatch ()
LIBMDBX_API void	throw_bad_value_size ()
LIBMDBX_API void	throw_incomparable_cursors ()
template<class ALLOCATOR = default_allocator, typename CAPACITY_POLICY = default_capacity_policy, MutableByteProducer PRODUCER>
buffer< ALLOCATOR, CAPACITY_POLICY >	make_buffer (PRODUCER &producer, const ALLOCATOR &allocator=ALLOCATOR())
template<class ALLOCATOR = default_allocator, typename CAPACITY_POLICY = default_capacity_policy, ImmutableByteProducer PRODUCER>
buffer< ALLOCATOR, CAPACITY_POLICY >	make_buffer (const PRODUCER &producer, const ALLOCATOR &allocator=ALLOCATOR())
template<class ALLOCATOR = default_allocator, MutableByteProducer PRODUCER>
string< ALLOCATOR >	make_string (PRODUCER &producer, const ALLOCATOR &allocator=ALLOCATOR())
template<class ALLOCATOR = default_allocator, ImmutableByteProducer PRODUCER>
string< ALLOCATOR >	make_string (const PRODUCER &producer, const ALLOCATOR &allocator=ALLOCATOR())
inline ::std::ostream &	operator<< (::std::ostream &out, const to_hex &wrapper)
inline ::std::ostream &	operator<< (::std::ostream &out, const to_base58 &wrapper)
inline ::std::ostream &	operator<< (::std::ostream &out, const to_base64 &wrapper)
MDBX_CXX01_CONSTEXPR_ENUM bool	is_usual (key_mode mode) noexcept
MDBX_CXX01_CONSTEXPR_ENUM bool	is_ordinal (key_mode mode) noexcept
MDBX_CXX01_CONSTEXPR_ENUM bool	is_samelength (key_mode mode) noexcept
MDBX_CXX01_CONSTEXPR_ENUM bool	is_reverse (key_mode mode) noexcept
MDBX_CXX01_CONSTEXPR_ENUM bool	is_msgpack (key_mode mode) noexcept
MDBX_CXX01_CONSTEXPR_ENUM bool	is_usual (value_mode mode) noexcept
MDBX_CXX01_CONSTEXPR_ENUM bool	is_multi (value_mode mode) noexcept
MDBX_CXX01_CONSTEXPR_ENUM bool	is_ordinal (value_mode mode) noexcept
MDBX_CXX01_CONSTEXPR_ENUM bool	is_samelength (value_mode mode) noexcept
MDBX_CXX01_CONSTEXPR_ENUM bool	is_reverse (value_mode mode) noexcept
MDBX_CXX01_CONSTEXPR_ENUM bool	is_msgpack (value_mode mode) noexcept
comparator	default_comparator (key_mode mode) noexcept
comparator	default_comparator (value_mode mode) noexcept
LIBMDBX_API::std::ostream &	operator<< (::std::ostream &, const slice &)
LIBMDBX_API::std::ostream &	operator<< (::std::ostream &, const pair &)
LIBMDBX_API::std::ostream &	operator<< (::std::ostream &, const pair_result &)
template<class ALLOCATOR , typename CAPACITY_POLICY >
inline ::std::ostream &	operator<< (::std::ostream &out, const buffer< ALLOCATOR, CAPACITY_POLICY > &it)
LIBMDBX_API::std::ostream &	operator<< (::std::ostream &, const env::geometry::size &)
LIBMDBX_API::std::ostream &	operator<< (::std::ostream &, const env::geometry &)
LIBMDBX_API::std::ostream &	operator<< (::std::ostream &, const env::operate_parameters &)
LIBMDBX_API::std::ostream &	operator<< (::std::ostream &, const env::mode &)
LIBMDBX_API::std::ostream &	operator<< (::std::ostream &, const env::durability &)
LIBMDBX_API::std::ostream &	operator<< (::std::ostream &, const env::reclaiming_options &)
LIBMDBX_API::std::ostream &	operator<< (::std::ostream &, const env::operate_options &)
LIBMDBX_API::std::ostream &	operator<< (::std::ostream &, const env_managed::create_parameters &)
LIBMDBX_API::std::ostream &	operator<< (::std::ostream &, const MDBX_log_level_t &)
LIBMDBX_API::std::ostream &	operator<< (::std::ostream &, const MDBX_debug_flags_t &)
LIBMDBX_API::std::ostream &	operator<< (::std::ostream &, const error &)
inline ::std::ostream &	operator<< (::std::ostream &out, const MDBX_error_t &errcode)
constexpr bool	operator== (const error &a, const error &b)
constexpr bool	operator!= (const error &a, const error &b)
constexpr bool	operator== (const slice &a, const slice &b)
constexpr bool	operator< (const slice &a, const slice &b)
constexpr bool	operator> (const slice &a, const slice &b)
constexpr bool	operator<= (const slice &a, const slice &b)
constexpr bool	operator>= (const slice &a, const slice &b)
constexpr bool	operator!= (const slice &a, const slice &b)
constexpr bool	operator== (const pair &a, const pair &b)
constexpr bool	operator< (const pair &a, const pair &b)
constexpr bool	operator> (const pair &a, const pair &b)
constexpr bool	operator<= (const pair &a, const pair &b)
constexpr bool	operator>= (const pair &a, const pair &b)
constexpr bool	operator!= (const pair &a, const pair &b)
constexpr bool	operator== (const env &a, const env &b)
constexpr bool	operator!= (const env &a, const env &b)
constexpr bool	operator== (const txn &a, const txn &b)
constexpr bool	operator!= (const txn &a, const txn &b)
constexpr bool	operator== (const cursor &a, const cursor &b)
constexpr bool	operator!= (const cursor &a, const cursor &b)
int	compare_position_nothrow (const cursor &left, const cursor &right, bool ignore_nested=false)
int	compare_position (const cursor &left, const cursor &right, bool ignore_nested=false)
ptrdiff_t	estimate (const cursor &from, const cursor &to)

Detailed Description

The libmdbx C++ API namespace.