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Optimize fast_locals and atomic ordering #7289

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Merged
youknowone merged 5 commits into from
Mar 1, 2026
Merged

Optimize fast_locals and atomic ordering #7289

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6895ddb
Relax RefCount atomic ordering from SeqCst to Arc pattern
youknowone Mar 1, 2026
89703b6
Reuse existing Vec via prepend_arg in execute_call
youknowone Mar 1, 2026
6a9be9f
Skip downcast_ref checks in invoke when tracing is disabled
youknowone Mar 1, 2026
958853f
Replace fastlocals PyMutex with UnsafeCell-based FastLocals
youknowone Mar 1, 2026
516ff0f
Auto-format: cargo fmt --all
github-actions[bot] Mar 1, 2026
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Reuse existing Vec via prepend_arg in execute_call 
Replace vec![self_val] + extend(args.args) with
FuncArgs::prepend_arg() to avoid a second heap allocation
on every method call.
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@youknowone
youknowone committed Mar 1, 2026
commit 89703b608bb74c6d520bde75896c75481c6634f0
18 changes: 6 additions & 12 deletions crates/vm/src/frame.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -3389,12 +3389,9 @@ impl ExecutingFrame<'_> {
let callable = self.pop_value();

let final_args = if let Some(self_val) = self_or_null {
let mut all_args = vec![self_val];
all_args.extend(args.args);
FuncArgs {
args: all_args,
kwargs: args.kwargs,
}
let mut args = args;
args.prepend_arg(self_val);
args
} else {
args
};
Expand All @@ -3410,12 +3407,9 @@ impl ExecutingFrame<'_> {
let callable = self.pop_value();

let final_args = if let Some(self_val) = self_or_null {
let mut all_args = vec![self_val];
all_args.extend(args.args);
FuncArgs {
args: all_args,
kwargs: args.kwargs,
}
let mut args = args;
args.prepend_arg(self_val);
args
} else {
args
};
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