jh::runtime_arr_helper::bool_flat_alloc Struct Reference

Flat allocator for bool — disables bit-packing in jh::runtime_arr<bool>. More...

#include <jh/core/runtime_arr.h>

Classes
struct	rebind

Public Types
using	value_type = bool

Public Member Functions
bool *	allocate (std::size_t n)
void	deallocate (bool *p, std::size_t) noexcept
bool	operator== (const bool_flat_alloc &) const noexcept=default

Detailed Description

Flat allocator for bool — disables bit-packing in jh::runtime_arr<bool>.

Overview

bool_flat_alloc provides a minimal, stateless allocator used to instantiate jh::runtime_arr<bool, bool_flat_alloc> as a byte-based (non-packed) boolean array.

Normally, jh::runtime_arr<bool> uses a bit-packed storage model, compressing 8 boolean values into a single byte (64 per 64-bit word). By supplying this allocator, each bool instead occupies 1 full byte, allowing direct memory access and STL-contiguous semantics.

Usage

// Compact, bit-packed (default)
jh::runtime_arr<bool> packed(128);
 
// Byte-based, non-packed
jh::runtime_arr<bool, jh::runtime_arr_helper::bool_flat_alloc> plain(128);
plain[0] = true;

Behavior

• Stateless — all methods are static.
• Allocates raw bool[n] arrays via new[].
• Deallocates via delete[].
• Serves as the byte-based alternative allocator for testing or explicit non-packed use cases.
• Does not implement std::allocator_traits and is not STL-compatible.

Typical Use Case

Used for performance benchmarking and correctness testing of the jh::runtime_arr<bool> specialization, or for scenarios where bit-packing overhead is undesirable (e.g. frequent random access or interop with APIs expecting bool* pointers).

See also

• jh::runtime_arr<bool> — bit-packed specialization.
• jh::runtime_arr<bool, runtime_arr_helper::bool_flat_alloc> — byte-based variant.

---

The documentation for this struct was generated from the following file:

• include/jh/core/runtime_arr.h