crabslab 0.6.6

Slab allocator focused on GPU compute (rust-gpu)
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85

#![allow(unexpected_cfgs)]
#![cfg_attr(target_arch = "spirv", no_std)]
//! Creating and crafting a tasty slab of memory.
#![doc = include_str!("../README.md")]

mod array;
mod id;
mod slab;

// #[cfg(not(target_arch = "spirv"))]
// pub mod hologram;
pub mod bits;
pub mod impl_slab_item;
pub mod offset;

pub use array::*;
pub use id::*;
pub use slab::*;

pub use crabslab_derive::{IsContainer, SlabItem};

#[cfg(not(target_arch = "spirv"))]
/// Proxy for `u32::saturating_sub`.
///
/// Used by the derive macro for `SlabItem`.
pub const fn __saturating_sub(a: usize, b: usize) -> usize {
    a.saturating_sub(b)
}

#[cfg(target_arch = "spirv")]
pub const fn __saturating_sub(a: usize, b: usize) -> usize {
    if a < b {
        0
    } else {
        a - b
    }
}

#[cfg(not(target_arch = "spirv"))]
#[inline]
pub fn slice_index<T>(slab: &[T], index: usize) -> &T {
    &slab[index]
}

#[cfg(not(target_arch = "spirv"))]
#[inline]
pub fn slice_index_mut<T>(slab: &mut [T], index: usize) -> &mut T {
    &mut slab[index]
}

#[cfg(target_arch = "spirv")]
#[inline]
pub fn slice_index<T>(slab: &[T], index: usize) -> &T {
    unsafe { spirv_std::arch::IndexUnchecked::index_unchecked(slab, index) }
}

#[cfg(target_arch = "spirv")]
#[inline]
pub fn slice_index_mut<T>(slab: &mut [T], index: usize) -> &mut T {
    unsafe { spirv_std::arch::IndexUnchecked::index_unchecked_mut(slab, index) }
}

#[cfg(not(target_arch = "spirv"))]
#[inline]
pub fn array_index<const N: usize, T>(slab: &[T; N], index: usize) -> &T {
    &slab[index]
}

#[cfg(not(target_arch = "spirv"))]
#[inline]
pub fn array_index_mut<const N: usize, T>(slab: &mut [T; N], index: usize) -> &mut T {
    &mut slab[index]
}

#[cfg(target_arch = "spirv")]
#[inline]
pub fn array_index<const N: usize, T>(slab: &[T; N], index: usize) -> &T {
    unsafe { spirv_std::arch::IndexUnchecked::index_unchecked(slab, index) }
}

#[cfg(target_arch = "spirv")]
#[inline]
pub fn array_index_mut<const N: usize, T>(slab: &mut [T; N], index: usize) -> &mut T {
    unsafe { spirv_std::arch::IndexUnchecked::index_unchecked_mut(slab, index) }
}