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Use mmap for proc macro libs

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This commit is contained in:
Laurențiu Nicola 2020-04-17 10:47:15 +03:00
parent 69f0cb6cd7
commit 93fcf1c133
3 changed files with 17 additions and 2 deletions
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7
crates/ra_proc_macro_srv/src/dylib.rs
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@ -1,10 +1,12 @@
//! Handles dynamic library loading for proc macro
use crate::{proc_macro::bridge, rustc_server::TokenStream};
use std::fs::File;
use std::path::Path;
use goblin::{mach::Mach, Object};
use libloading::Library;
use memmap::Mmap;
use ra_proc_macro::ProcMacroKind;
use std::io::Error as IoError;
@ -21,7 +23,8 @@ fn is_derive_registrar_symbol(symbol: &str) -> bool {
}
fn find_registrar_symbol(file: &Path) -> Result<Option<String>, IoError> {
let buffer = std::fs::read(file)?;
let file = File::open(file)?;
let buffer = unsafe { Mmap::map(&file)? };
let object = Object::parse(&buffer).map_err(invalid_data_err)?;
match object {
@ -55,7 +58,7 @@ fn find_registrar_symbol(file: &Path) -> Result<Option<String>, IoError> {
&s.name
}
})
.find(|s| is_derive_registrar_symbol(&s))
.find(|s| is_derive_registrar_symbol(s))
.map(|s| s.to_string());
Ok(name)
}