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parity-common
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More performance optimizations (#1814) 

* Buffered DB

* Use identity hash for MemoryDB

* Various tweaks

* Delayed DB compression

* Reduce last_hashes cloning

* Keep state cache

* Updating tests

* Optimized to_big_int

* Fixing build with stable

* Safer code
This commit is contained in:
Arkadiy Paronyan 2016-08-03 22:03:40 +02:00 committed by Gav Wood
parent eaf8761487
commit 5903600e74
1 changed files with 35 additions and 7 deletions
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36
src/uint.rs
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@ -36,10 +36,8 @@
//! The functions here are designed to be fast.
//!
#[cfg(all(asm_available, target_arch="x86_64"))]
use std::mem;
use std::fmt;
use std::str::{FromStr};
use std::convert::From;
use std::hash::Hash;
@ -647,8 +645,39 @@ macro_rules! construct_uint {
(arr[index / 8] >> (((index % 8)) * 8)) as u8
}
#[cfg(any(
target_arch = "arm",
target_arch = "mips",
target_arch = "powerpc",
target_arch = "x86",
target_arch = "x86_64",
target_arch = "aarch64",
target_arch = "powerpc64"))]
#[inline]
fn to_big_endian(&self, bytes: &mut[u8]) {
assert!($n_words * 8 == bytes.len());
debug_assert!($n_words * 8 == bytes.len());
let &$name(ref arr) = self;
unsafe {
let mut out: *mut u64 = mem::transmute(bytes.as_mut_ptr());
out = out.offset($n_words);
for i in 0..$n_words {
out = out.offset(-1);
*out = arr[i].swap_bytes();
}
}
}
#[cfg(not(any(
target_arch = "arm",
target_arch = "mips",
target_arch = "powerpc",
target_arch = "x86",
target_arch = "x86_64",
target_arch = "aarch64",
target_arch = "powerpc64")))]
#[inline]
fn to_big_endian(&self, bytes: &mut[u8]) {
debug_assert!($n_words * 8 == bytes.len());
let &$name(ref arr) = self;
for i in 0..bytes.len() {
let rev = bytes.len() - 1 - i;
@ -656,7 +685,6 @@ macro_rules! construct_uint {
bytes[i] = (arr[pos] >> ((rev % 8) * 8)) as u8;
}
}
#[inline]
fn exp10(n: usize) -> Self {
match n {