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dashmap
mirror of https://github.com/xacrimon/dashmap
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Switch hashbrown to std::collections::hash_map 

The `std::collections::hash_map` implementation was replaced with a
copy of `hashbrown` in Rust 1.36.  There’s still a difference in the
default hasher, but we disabled that default in #205.  So I think this
switch has no effect but to improve compile times and binary sizes.

Signed-off-by: Anders Kaseorg <andersk@mit.edu>
This commit is contained in:
Anders Kaseorg 2022-06-16 22:11:22 -07:00
parent 459db7ac6f
commit 246cb99a41
3 changed files with 3 additions and 5 deletions
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1
Cargo.toml
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@ -19,7 +19,6 @@ raw-api = []
[dependencies]
lock_api = "0.4.7"
parking_lot_core = "0.9.3"
hashbrown = { version = "0.12.0", default-features = false }
serde = { version = "1.0.136", optional = true, features = ["derive"] }
cfg-if = "1.0.0"
rayon = { version = "1.5.2", optional = true }

3
src/iter.rs
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@ -6,8 +6,7 @@ use crate::util::SharedValue;
use crate::{DashMap, HashMap};
use core::hash::{BuildHasher, Hash};
use core::mem;
use hashbrown::hash_map;
use std::collections::hash_map::RandomState;
use std::collections::hash_map::{self, RandomState};
use std::sync::Arc;
/// Iterator over a DashMap yielding key value pairs.

4
src/lib.rs
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@ -37,7 +37,7 @@ use mapref::multiple::RefMulti;
use mapref::one::{Ref, RefMut};
pub use read_only::ReadOnlyView;
pub use set::DashSet;
use std::collections::hash_map::RandomState;
use std::collections::hash_map::{self, RandomState};
pub use t::Map;
use try_result::TryResult;
@ -49,7 +49,7 @@ cfg_if! {
}
}
pub(crate) type HashMap<K, V, S> = hashbrown::HashMap<K, SharedValue<V>, S>;
pub(crate) type HashMap<K, V, S> = hash_map::HashMap<K, SharedValue<V>, S>;
fn default_shard_amount() -> usize {
(std::thread::available_parallelism().map_or(1, usize::from) * 4).next_power_of_two()