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Switch to lazycell #94

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Jun 7, 2018
Merged

Switch to lazycell #94

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5b312f8
Switch to lazycell
est31 Jun 6, 2018
4a20169
Remove Sync bounds
est31 Jun 7, 2018
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2 changes: 1 addition & 1 deletion Cargo.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -20,7 +20,7 @@ fallible-iterator = "0.1"
object = "0.7"
intervaltree = "0.2"
smallvec = "0.6"
lazy-init = "0.3"
lazycell = "1.0"
rustc-demangle = { version = "0.1", optional = true }
cpp_demangle = { version = "0.2", optional = true }

Expand Down
43 changes: 17 additions & 26 deletions src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -28,7 +28,7 @@ extern crate cpp_demangle;
extern crate fallible_iterator;
extern crate gimli;
extern crate intervaltree;
extern crate lazy_init;
extern crate lazycell;
extern crate object;
#[cfg(feature = "rustc-demangle")]
extern crate rustc_demangle;
Expand All @@ -41,7 +41,7 @@ use std::u64;

use fallible_iterator::FallibleIterator;
use intervaltree::{Element, IntervalTree};
use lazy_init::Lazy;
use lazycell::LazyCell;
use object::Object;
use smallvec::SmallVec;

Expand All @@ -57,8 +57,7 @@ struct Lines<R: gimli::Reader> {

struct ResUnit<R>
where
R: gimli::Reader + Sync,
R::Offset: Sync,
R: gimli::Reader,
{
dw_unit: gimli::CompilationUnitHeader<R, R::Offset>,
abbrevs: gimli::Abbreviations,
Expand All @@ -67,8 +66,8 @@ where
comp_name: Option<R>,
lang: Option<gimli::DwLang>,
base_addr: u64,
lines: Lazy<Result<Lines<R>, Error>>,
funcs: Lazy<Result<IntervalTree<u64, Func<R::Offset>>, Error>>,
lines: LazyCell<Result<Lines<R>, Error>>,
funcs: LazyCell<Result<IntervalTree<u64, Func<R::Offset>>, Error>>,
}

/// The state necessary to perform address to line translation.
Expand All @@ -77,8 +76,7 @@ where
/// when performing lookups for many addresses in the same executable.
pub struct Context<R>
where
R: gimli::Reader + Sync,
R::Offset: Sync,
R: gimli::Reader,
{
unit_ranges: Vec<(gimli::Range, usize)>,
units: Vec<ResUnit<R>>,
Expand Down Expand Up @@ -205,8 +203,8 @@ impl<'a> Context<gimli::EndianSlice<'a, gimli::RunTimeEndian>> {
comp_name: dcn,
lang,
base_addr,
lines: Lazy::new(),
funcs: Lazy::new(),
lines: LazyCell::new(),
funcs: LazyCell::new(),
});
}

Expand Down Expand Up @@ -242,12 +240,11 @@ impl<'a> Context<gimli::EndianSlice<'a, gimli::RunTimeEndian>> {

impl<R> ResUnit<R>
where
R: gimli::Reader + Sync,
R::Offset: Sync,
R: gimli::Reader,
{
fn parse_lines(&self, sections: &DebugSections<R>) -> Result<&Lines<R>, Error> {
self.lines
.get_or_create(|| {
.borrow_with(|| {
let ilnp = sections.debug_line.program(
self.line_offset,
self.dw_unit.address_size(),
Expand All @@ -269,7 +266,7 @@ where
sections: &DebugSections<R>,
) -> Result<&IntervalTree<u64, Func<R::Offset>>, Error> {
self.funcs
.get_or_create(|| {
.borrow_with(|| {
let mut results = Vec::new();
let mut depth = 0;
let mut cursor = self.dw_unit.entries(&self.abbrevs);
Expand Down Expand Up @@ -322,8 +319,7 @@ struct DebugSections<R: gimli::Reader> {
/// An iterator over function frames.
pub struct FrameIter<'ctx, R>
where
R: gimli::Reader + Sync + 'ctx,
R::Offset: Sync,
R: gimli::Reader + 'ctx,
{
unit_id: usize,
units: &'ctx Vec<ResUnit<R>>,
Expand Down Expand Up @@ -426,8 +422,7 @@ pub struct Location {

impl<R> Context<R>
where
R: gimli::Reader + Sync,
R::Offset: Sync,
R: gimli::Reader,
{
fn find_unit(&self, probe: u64) -> Option<usize> {
let idx = self.unit_ranges.binary_search_by(|r| {
Expand Down Expand Up @@ -491,8 +486,7 @@ where

impl<R> ResUnit<R>
where
R: gimli::Reader + Sync,
R::Offset: Sync,
R: gimli::Reader,
{
fn find_location(
&self,
Expand Down Expand Up @@ -570,8 +564,7 @@ fn name_attr<'abbrev, 'unit, R>(
recursion_limit: usize,
) -> Result<Option<R>, Error>
where
R: gimli::Reader + Sync,
R::Offset: Sync,
R: gimli::Reader,
{
if recursion_limit == 0 {
return Ok(None);
Expand Down Expand Up @@ -625,8 +618,7 @@ where

impl<'ctx, R> FrameIter<'ctx, R>
where
R: gimli::Reader + Sync + 'ctx,
R::Offset: Sync,
R: gimli::Reader + 'ctx,
{
/// Advances the iterator and returns the next frame.
pub fn next(&mut self) -> Result<Option<Frame<R>>, Error> {
Expand Down Expand Up @@ -690,8 +682,7 @@ where

impl<'ctx, R> FallibleIterator for FrameIter<'ctx, R>
where
R: gimli::Reader + Sync + 'ctx,
R::Offset: Sync,
R: gimli::Reader + 'ctx,
{
type Item = Frame<R>;
type Error = Error;
Expand Down