std.experimental.allocator.mmap_allocator

Source: std/experimental/allocator/_mmap_allocator.d

struct MmapAllocator

Types 1

structMmapAllocator

Allocator (currently defined only for Posix and Windows) using

mmap

and munmap directly (or their Windows equivalents). There is no additional structure: each call to allocate(s) issues a call to

mmap(null, s, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0),

and each call to deallocate(b) issues munmap(b.ptr, b.length). So MmapAllocator is usually intended for allocating large chunks to be managed by fine-granular allocators.

Fields
MmapAllocator instanceThe one shared instance.
size_t alignmentAlignment is page-size and hardcoded to 4096 (even though on certain systems it could be larger).