Inheritance diagram for pstore::region::mem_based_factory:
Collaboration diagram for pstore::region::mem_based_factory:
Public Member Functions | |
| mem_based_factory (std::shared_ptr< file::in_memory > file, std::uint64_t full_size, std::uint64_t min_size) | |
| std::vector< memory_mapper_ptr > | init () override |
| Creates the memory mapping objects for the given database file. More... | |
| void | add (gsl::not_null< std::vector< memory_mapper_ptr > *> regions, std::uint64_t original_size, std::uint64_t new_size) override |
| std::shared_ptr< file::file_base > | file () override |
 Public Member Functions inherited from pstore::region::factory | |
| std::uint64_t | full_size () const noexcept |
| std::uint64_t | min_size () const noexcept |
Additional Inherited Members | |
| Protected Member Functions inherited from pstore::region::factory | |
| constexpr | factory (std::uint64_t const full_size, std::uint64_t const min_size) noexcept |
| template<typename File , typename MemoryMapper > | |
| auto | create (std::shared_ptr< File > file) -> std::vector< memory_mapper_ptr > |
| template<typename File , typename MemoryMapper > | |
| void | append (std::shared_ptr< File > file, gsl::not_null< std::vector< memory_mapper_ptr > *> regions, std::uint64_t original_size, std::uint64_t new_size) |
Constructor & Destructor Documentation
◆ mem_based_factory()
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explicit |
- Parameters
-
file An open file containing the data to be memory-mapped. full_size The size of the largest memory-mapped file region. min_size The size of the smallest memory-mapped file region.
Member Function Documentation
◆ init()
|
overridevirtual |
Creates the memory mapping objects for the given database file.
Memory map the file regions. Creates an array of memory-mapped regions. This will consist of a number of entries whose size is equal to full_region_size followed by a number of entries of min_size bytes each up to the size of the file. A file whose size is not an exact multiple of min_size will have a single mapped region which extends beyond the (original) end of the file.
- Returns
- A container of memory mapper objects.
Implements pstore::region::factory.
The documentation for this class was generated from the following files:
- include/pstore/core/region.hpp
- lib/core/region.cpp
