ITStudio_OUC/OxideJS
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perf: 不可变常量改 OnceLock 一次性缓存,删 Constant 死变体并移出 GC 根

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爱特每羊队
2026-06-25 14:32:49 +08:00
parent 1ef8349208
commit 06f769c4e0
9 changed files with 115 additions and 192 deletions
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crates/oxide_vm/src/vm_runtime.rs
+11 -11
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@@ -1,4 +1,4 @@
use std::sync::Arc;
use std::sync::{Arc, OnceLock};
use oxide_bytecode::module::CompiledModule;
use oxide_bytecode::opcode;
@@ -34,13 +34,12 @@ impl Vm {
let subs = Arc::clone(&self.sub_modules);
let sub = &subs[sub_idx];
let converted_constants = self.convert_constants(&sub.constants).map_err(String::from)?;
let saved = Box::new(InlineSyncState {
regs: Box::new(self.regs),
pc: self.pc,
bytecode: std::mem::take(&mut self.bytecode),
constants: std::mem::take(&mut self.constants),
active_immutables: self.active_immutables,
active_reg_limit: self.active_reg_limit,
root_reg_limit: self.root_reg_limit,
try_stack: std::mem::take(&mut self.try_stack),
@@ -52,14 +51,14 @@ impl Vm {
for_of_iters: std::mem::take(&mut self.for_of_iters),
last_for_of_result: self.last_for_of_result,
saved_bytecode_stack: std::mem::take(&mut self.saved_bytecode_stack),
saved_constants_stack: std::mem::take(&mut self.saved_constants_stack),
saved_immutables_stack: std::mem::take(&mut self.saved_immutables_stack),
save_stack: std::mem::take(&mut self.save_stack),
});
self.regs = [JsValue::undefined(); 256];
self.pc = 0;
self.bytecode = sub.bytecode.clone();
self.constants = converted_constants;
self.activate_immutables(sub_idx + 1, &sub.constants);
self.active_reg_limit = sub.n_registers.max(1);
self.root_reg_limit = self.active_reg_limit;
for i in 0..sub.n_args as usize {
@@ -82,7 +81,7 @@ impl Vm {
self.regs = *saved.regs;
self.pc = saved.pc;
self.bytecode = saved.bytecode;
self.constants = saved.constants;
self.active_immutables = saved.active_immutables;
self.active_reg_limit = saved.active_reg_limit;
self.root_reg_limit = saved.root_reg_limit;
self.try_stack = saved.try_stack;
@@ -94,7 +93,7 @@ impl Vm {
self.for_of_iters = saved.for_of_iters;
self.last_for_of_result = saved.last_for_of_result;
self.saved_bytecode_stack = saved.saved_bytecode_stack;
self.saved_constants_stack = saved.saved_constants_stack;
self.saved_immutables_stack = saved.saved_immutables_stack;
self.save_stack = saved.save_stack;
result
@@ -104,8 +103,8 @@ impl Vm {
if let Some(saved_bc) = self.saved_bytecode_stack.pop() {
self.bytecode = saved_bc;
}
if let Some(saved_consts) = self.saved_constants_stack.pop() {
self.constants = saved_consts;
if let Some(saved_imm) = self.saved_immutables_stack.pop() {
self.active_immutables = saved_imm;
}
let offset = frame.saved_reg_offset as usize;
let len = frame.caller_reg_limit as usize;
@@ -144,9 +143,10 @@ impl Vm {
pub fn run(&mut self, module: &CompiledModule) -> Result<JsValue, String> {
self.clear_execution_state();
self.sub_modules = Arc::new(module.sub_modules.clone());
self.constants = self.convert_constants(&module.constants).map_err(String::from)?;
self.sub_module_constants = vec![Vec::new(); self.sub_modules.len()];
// Per-run convert-once cache: slot 0 = top module, slot sub_idx+1 = sub_modules[sub_idx].
self.immutables_cache = (0..=self.sub_modules.len()).map(|_| OnceLock::new()).collect();
self.bytecode = module.bytecode.clone();
self.activate_immutables(0, &module.constants);
self.root_reg_limit = module.n_registers.max(1);
self.active_reg_limit = self.root_reg_limit;