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perf: 函数调用 bytecode 改 Arc 共享（O(1) 帧切换 + IC 写时复制）

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This commit is contained in:
彭俊皓
2026-08-10 15:08:51 +08:00
parent 34fb7c8dff
commit 7efb26bc96
12 changed files with 72 additions and 50 deletions
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crates/oxide_vm/src/vm_props.rs
+7 -4
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@@ -278,6 +278,7 @@ impl Vm {
let ext1 = self.bytecode[self.pc + 1];
let ext2 = self.bytecode[self.pc + 2];
self.pc += 3;
let ic_pc = self.pc;
if obj.has_prop_meta() {
return self.ordinary_get(obj, prop_name_si, receiver);
}
@@ -291,7 +292,7 @@ impl Vm {
if template.prop_name != prop_name_si {
self.proto_chain_ic_get(obj, prop_name_si, receiver)?
} else if template.position < obj.prop_vec_len() as u32 {
crate::ic_helper::write_ic_back(&mut self.bytecode, self.pc, obj.shape_id(), template.position, 0);
crate::ic_helper::write_ic_back(self.bytecode_mut(), ic_pc, obj.shape_id(), template.position, 0);
obj.get_prop_shape(template.position)
} else {
self.proto_chain_ic_get(obj, prop_name_si, receiver)?
@@ -304,11 +305,12 @@ impl Vm {
/// 执行 ordinary_get 并把 IC 按原型链深度写回。
fn proto_chain_ic_get(&mut self, obj: &JsObject, prop_name_si: u32, receiver: JsValue) -> Result<JsValue, String> {
let ic_pc = self.pc;
let resolved = self.ordinary_get(obj, prop_name_si, receiver)?;
// 快路径：自身属性（depth=0）。
if let Some(pos) = self.kernel_core.shape_forge().lookup_position(obj.shape_id(), prop_name_si) {
if !obj.is_accessor_meta(pos) {
crate::ic_helper::write_ic_back(&mut self.bytecode, self.pc, obj.shape_id(), pos, 0);
crate::ic_helper::write_ic_back(self.bytecode_mut(), ic_pc, obj.shape_id(), pos, 0);
}
return Ok(resolved);
}
@@ -319,7 +321,7 @@ impl Vm {
let co = unsafe { &*cursor };
if let Some(pos) = self.kernel_core.shape_forge().lookup_position(co.shape_id(), prop_name_si) {
if !co.is_accessor_meta(pos) {
crate::ic_helper::write_ic_back(&mut self.bytecode, self.pc, co.shape_id(), pos, depth);
crate::ic_helper::write_ic_back(self.bytecode_mut(), ic_pc, co.shape_id(), pos, depth);
}
break;
}
@@ -336,6 +338,7 @@ impl Vm {
&mut self, obj: &mut JsObject, prop_name_si: u32, val: JsValue, receiver: JsValue,
) -> Result<(), String> {
ic_trace!("set_member_prop: shape_id={} prop_name_si={}", obj.shape_id(), prop_name_si);
let ic_pc = self.pc;
let val = self.promote_if_needed_for_write_ptr(obj as *mut JsObject, val);
if let Some(pos) = self.kernel_core.shape_forge().lookup_position(obj.shape_id(), prop_name_si) {
if obj.has_prop_meta() {
@@ -343,7 +346,7 @@ impl Vm {
return Ok(());
}
obj.set_prop_shape(pos, val);
crate::ic_helper::write_ic_back(&mut self.bytecode, self.pc, obj.shape_id(), pos, 0);
crate::ic_helper::write_ic_back(self.bytecode_mut(), ic_pc, obj.shape_id(), pos, 0);
} else {
self.ordinary_set(obj, prop_name_si, val, receiver)?;
}