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TAMER: POC: Use FxHash to remove nondeterminism 

The default SipHash is a cryptographic hash and causes ordering to change
between runs.
master
Mike Gerwitz 2020-01-15 10:27:35 -05:00
parent 645908e258
commit ab3aec980d
1 changed files with 7 additions and 7 deletions
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14
tamer/src/ld/poc.rs
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@ -23,10 +23,10 @@ use crate::ir::asg::IdentKind;
use crate::ir::asg::{Asg, DefaultAsg, Object, ObjectRef, Source};
use crate::obj::xmlo::reader::{XmloError, XmloEvent, XmloReader};
use crate::sym::{DefaultInterner, Interner, Symbol};
use fxhash::{FxHashMap, FxHashSet};
use petgraph::visit::DfsPostOrder;
use quick_xml::events::{BytesEnd, BytesStart, BytesText, Event};
use quick_xml::Writer;
use std::collections::{HashMap, HashSet};
use std::convert::TryInto;
use std::error::Error;
use std::fs;
@ -36,8 +36,8 @@ type LinkerAsg<'i> = DefaultAsg<'i, global::ProgIdentSize>;
type LinkerObjectRef = ObjectRef<global::ProgIdentSize>;
pub fn main() -> Result<(), Box<dyn Error>> {
let mut pkgs_seen = HashSet::<String>::new();
let mut fragments = HashMap::<&str, String>::new();
let mut pkgs_seen: FxHashSet<String> = Default::default();
let mut fragments: FxHashMap<&str, String> = Default::default();
let mut depgraph = LinkerAsg::with_capacity(65536, 65536);
let mut roots = Vec::new();
let interner = DefaultInterner::new();
@ -91,8 +91,8 @@ pub fn main() -> Result<(), Box<dyn Error>> {
fn load_xmlo<'a, 'i, I: Interner<'i>>(
path_str: &'a str,
pkgs_seen: &mut HashSet<String>,
fragments: &mut HashMap<&'i str, String>,
pkgs_seen: &mut FxHashSet<String>,
fragments: &mut FxHashMap<&'i str, String>,
depgraph: &mut LinkerAsg<'i>,
interner: &'i I,
roots: &mut Vec<LinkerObjectRef>,
@ -108,7 +108,7 @@ fn load_xmlo<'a, 'i, I: Interner<'i>>(
//println!("processing {}", path_str);
let mut found = HashSet::<&str>::new();
let mut found: FxHashSet<&str> = Default::default();
let file = fs::File::open(&path)?;
let reader = BufReader::new(file);
@ -437,7 +437,7 @@ fn output_xmle<'a, 'i, I: Interner<'i>>(
writer
.write_event(Event::Start(BytesStart::borrowed_name(b"l:map-from")))?;
let mut map_froms = HashSet::<&str>::new();
let mut map_froms: FxHashSet<&str> = Default::default();
for map_ident in &sorted.map {
match map_ident {