Use large stack on expander thread
@@ -39,6 +39,8 @@ pub(crate) struct ProcMacroSrv {
expanders: HashMap<(PathBuf, SystemTime), dylib::Expander>,
}
+const EXPANDER_STACK_SIZE: usize = 8 * 1024 * 1024;
+
impl ProcMacroSrv {
pub fn expand(&mut self, task: ExpandMacro) -> Result<FlatTree, PanicMessage> {
let expander = self.expander(task.lib.as_ref()).map_err(|err| {
@@ -66,13 +68,18 @@ impl ProcMacroSrv {
// FIXME: replace this with std's scoped threads once they stabilize
// (then remove dependency on crossbeam)
let result = crossbeam::scope(|s| {
- let res = s
+ let res = match s
+ .builder()
+ .stack_size(EXPANDER_STACK_SIZE)
+ .name(task.macro_name.clone())
.spawn(|_| {
expander
.expand(&task.macro_name, &macro_body, attributes.as_ref())
.map(|it| FlatTree::new(&it))
- })
- .join();
+ }) {
+ Ok(handle) => handle.join(),
+ Err(e) => std::panic::resume_unwind(Box::new(e)),
+ };
match res {
Ok(res) => res,
