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make exception cold

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This commit is contained in:
Jeong Yunwon
2022-06-04 11:38:44 +09:00
parent 3379ea2d78
commit 2ec7085921
1 changed files with 15 additions and 12 deletions
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27
vm/src/frame.rs
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@@ -335,22 +335,25 @@ impl ExecutingFrame<'_> {
}
// Instruction raised an exception
Err(exception) => {
// 1. Extract traceback from exception's '__traceback__' attr.
// 2. Add new entry with current execution position (filename, lineno, code_object) to traceback.
// 3. Unwind block stack till appropriate handler is found.
#[cold]
fn handle_exception(frame: &mut ExecutingFrame, exception: PyBaseExceptionRef, idx: usize, vm: &VirtualMachine) -> FrameResult {
// 1. Extract traceback from exception's '__traceback__' attr.
// 2. Add new entry with current execution position (filename, lineno, code_object) to traceback.
// 3. Unwind block stack till appropriate handler is found.
let loc = self.code.locations[idx];
let loc = frame.code.locations[idx];
let next = exception.traceback();
let new_traceback =
PyTraceback::new(next, frame.object.clone(), frame.lasti(), loc.row());
vm_trace!("Adding to traceback: {:?} {:?}", new_traceback, loc.row());
exception.set_traceback(Some(new_traceback.into_ref(vm)));
let next = exception.traceback();
vm.contextualize_exception(&exception);
let new_traceback =
PyTraceback::new(next, self.object.clone(), self.lasti(), loc.row());
vm_trace!("Adding to traceback: {:?} {:?}", new_traceback, loc.row());
exception.set_traceback(Some(new_traceback.into_ref(vm)));
frame.unwind_blocks(vm, UnwindReason::Raising { exception })
}
vm.contextualize_exception(&exception);
match self.unwind_blocks(vm, UnwindReason::Raising { exception }) {
match handle_exception(self, exception, idx, vm) {
Ok(None) => continue,
Ok(Some(result)) => {
break Ok(result);