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std.experimental.allocator.mmap_allocator

struct MmapAllocator

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.

static shared MmapAllocator instance

The one shared instance.

enum size_t alignment

Alignment is page-size and hardcoded to 4096 (even though on certain systems it could be larger).

shared void[] allocate(size_t bytes)
shared bool deallocate(void[] b)

Allocator API.

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Licensed under the Boost License 1.0.
https://dlang.org/phobos/std_experimental_allocator_mmap_allocator.html