feat: 内核预留 MessagePort 原型与 MessageChannel 构造器槽位

Cargo.lock

@@ -1160,7 +1160,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_builtins"
-version = "0.8.83"
+version = "0.8.84"
 dependencies = [
  "chrono",
  "fast-float",
@@ -1185,7 +1185,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_bytecode"
-version = "0.8.83"
+version = "0.8.84"
 dependencies = [
  "num-bigint",
  "oxide_log",
@@ -1193,7 +1193,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_cfg"
-version = "0.8.83"
+version = "0.8.84"
 dependencies = [
  "oxide_bytecode",
  "oxide_emit",
@@ -1204,7 +1204,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_cli"
-version = "0.8.83"
+version = "0.8.84"
 dependencies = [
  "ansi_term",
  "bumpalo",
@@ -1226,7 +1226,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_code_cache"
-version = "0.8.83"
+version = "0.8.84"
 dependencies = [
  "lru",
  "oxide_bytecode",
@@ -1235,7 +1235,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_compiler"
-version = "0.8.83"
+version = "0.8.84"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1255,7 +1255,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_dce"
-version = "0.8.83"
+version = "0.8.84"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1269,7 +1269,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_emit"
-version = "0.8.83"
+version = "0.8.84"
 dependencies = [
  "num-bigint",
  "oxc_allocator",
@@ -1284,7 +1284,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_engine"
-version = "0.8.83"
+version = "0.8.84"
 dependencies = [
  "oxide_bytecode",
  "oxide_compiler",
@@ -1296,7 +1296,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_ir"
-version = "0.8.83"
+version = "0.8.84"
 dependencies = [
  "oxide_bytecode",
  "oxide_log",
@@ -1305,7 +1305,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_kernel"
-version = "0.8.83"
+version = "0.8.84"
 dependencies = [
  "bumpalo",
  "dashmap",
@@ -1319,7 +1319,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_liveness"
-version = "0.8.83"
+version = "0.8.84"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1331,7 +1331,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_log"
-version = "0.8.83"
+version = "0.8.84"
 dependencies = [
  "tracing",
  "tracing-appender",
@@ -1340,7 +1340,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_parser"
-version = "0.8.83"
+version = "0.8.84"
 dependencies = [
  "oxc_allocator",
  "oxc_ast",
@@ -1355,7 +1355,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_regalloc"
-version = "0.8.83"
+version = "0.8.84"
 dependencies = [
  "oxide_bytecode",
  "oxide_cfg",
@@ -1371,7 +1371,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_runtime_api"
-version = "0.8.83"
+version = "0.8.84"
 dependencies = [
  "num-bigint",
  "num-traits",
@@ -1384,7 +1384,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_test262"
-version = "0.8.83"
+version = "0.8.84"
 dependencies = [
  "oxide_bytecode",
  "oxide_compiler",
@@ -1402,7 +1402,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_types"
-version = "0.8.83"
+version = "0.8.84"
 dependencies = [
  "bumpalo",
  "dashmap",
@@ -1415,7 +1415,7 @@ dependencies = [
 
 [[package]]
 name = "oxide_vm"
-version = "0.8.83"
+version = "0.8.84"
 dependencies = [
  "bumpalo",
  "chrono",

Cargo.toml

@@ -23,7 +23,7 @@ members = [
 ]
 
 [workspace.package]
-version = "0.8.83"
+version = "0.8.84"
 edition = "2021"
 license = "MIT"
 rust-version = "1.80"

crates/oxide_kernel/src/builtin/construct.rs

@@ -502,6 +502,12 @@ impl BuiltinWorld {
 
         let console_object = P::new(JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::null()));
 
+        // MessagePort 原型与 MessageChannel 构造器的内核接线占位（空对象）：
+        // 真实原型/构造器本体与原型链连线由绑定层后续任务填充，本处只预留
+        // 槽位使快照/脏检查/收尾枚举覆盖到这两枚 P 字段。
+        let message_port_proto = P::new(JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::null()));
+        let message_channel_constructor = P::new(JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::null()));
+
         let (date_proto, date_constructor) = make_named_pair(string_forge, shape_forge, labels, "Date");
         let (set_proto, set_constructor) = make_named_pair(string_forge, shape_forge, labels, "Set");
         let (map_proto, map_constructor) = make_named_pair(string_forge, shape_forge, labels, "Map");
@@ -649,6 +655,8 @@ impl BuiltinWorld {
             async_disposable_stack_proto,
             stub_objects,
             console_object,
+            message_port_proto,
+            message_channel_constructor,
             leaked_objects: std::cell::RefCell::new(Vec::new()),
         };
         wire_builtin_world_links(&world);

crates/oxide_kernel/src/builtin/rebuild.rs

@@ -396,6 +396,16 @@ impl BuiltinWorld {
         } else {
             current.console_object.clone()
         };
+        // MessagePort 原型与 MessageChannel 构造器：脏则换新空对象占位（与
+        // 全量构造同形），未脏沿用旧指针。
+        let (message_port_proto, message_channel_constructor) = if dirty.message_channel {
+            (
+                P::new(JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::null())),
+                P::new(JsObject::new_empty(EMPTY_SHAPE_ID, JsValue::null())),
+            )
+        } else {
+            (current.message_port_proto.clone(), current.message_channel_constructor.clone())
+        };
 
         // 迭代器原型与资源栈原型依赖 Object.prototype（链到其上）：object 家族重建时
         // 一并重建，否则旧原型链指向已释放的 object_proto。
@@ -547,6 +557,8 @@ impl BuiltinWorld {
             async_disposable_stack_proto,
             stub_objects,
             console_object,
+            message_port_proto,
+            message_channel_constructor,
             leaked_objects: std::cell::RefCell::new(Vec::new()),
         };
         wire_builtin_world_links(&world);

crates/oxide_kernel/src/builtin/world.rs

@@ -1,5 +1,5 @@
-//! 注册表职责：BuiltinWorld 结构（95 固定 P 字段 + stub 族 + Box::into_raw
+//! 注册表职责：BuiltinWorld 结构（97 固定 P 字段 + stub 族 + Box::into_raw
-//! 登记表）、get_by_id 派发、all_p_fields 95 元组枚举（新增 P 字段四处同步
+//! 登记表）、get_by_id 派发、all_p_fields 97 元组枚举（新增 P 字段四处同步
 //! 约束载体）与登记表 track/find/inherit/teardown。
 
 use oxide_types::mem::P;
@@ -138,6 +138,12 @@ pub struct BuiltinWorld {
     pub async_disposable_stack_proto: P<JsObject>,
     pub stub_objects: Vec<P<JsObject>>,
     pub console_object: P<JsObject>,
+    /// `MessagePort.prototype` 槽位：纯内核接线占位（空对象），真实原型本体
+    /// 与构造器对由绑定层后续任务填充；脏家族位为 `message_channel`。
+    pub message_port_proto: P<JsObject>,
+    /// `MessageChannel` 构造器槽位：纯内核接线占位（空对象），真实构造器
+    /// 本体由绑定层后续任务填充。
+    pub message_channel_constructor: P<JsObject>,
     /// 释放登记表（`Box::into_raw` 对象的清单，session 收尾统一释放，非内存泄漏）：
     /// 绑定层经 `Box::into_raw` 持有的函数/宿主对象（方法 wrapper、访问器、
     /// 错误构造器、Reflect/Iterator、内建原型构造器、`$262` 宿主等）。
@@ -368,7 +374,7 @@ impl BuiltinWorld {
     /// session 收尾（`teardown_heap_data`）与选择性重建收尾（`retire_replaced`）
     /// 的 P 字段枚举唯一入口：`BuiltinWorld` 新增 P 字段须在此同步补一行，否则
     /// 收尾时该字段属性区无法释放、重建原型槽改写/释放漏掉该字段。
-    pub(crate) fn all_p_fields(&self) -> [&P<JsObject>; 95] {
+    pub(crate) fn all_p_fields(&self) -> [&P<JsObject>; 97] {
         [
             &self.object_proto,
             &self.array_proto,
@@ -465,6 +471,8 @@ impl BuiltinWorld {
             &self.disposable_stack_proto,
             &self.async_disposable_stack_proto,
             &self.console_object,
+            &self.message_port_proto,
+            &self.message_channel_constructor,
         ]
     }
 
@@ -598,6 +606,8 @@ impl BuiltinWorld {
             BuiltinId::BigIntProto => &self.bigint_proto,
             BuiltinId::Console => &self.console_object,
             BuiltinId::AsyncIteratorProto => &self.async_iterator_proto,
+            BuiltinId::MessagePortProto => &self.message_port_proto,
+            BuiltinId::MessageChannelCtor => &self.message_channel_constructor,
         }
     }
 }

crates/oxide_kernel/src/kernel/builtin_id.rs

@@ -1,4 +1,4 @@
-//! 内置对象 id 枚举（`BuiltinId` 85 变体 + `ALL` 顺序钉表）、世代快照
+//! 内置对象 id 枚举（`BuiltinId` 87 变体 + `ALL` 顺序钉表）、世代快照
 //! （`BuiltinSnapshot`）与按家族划分的脏标记位集（`BuiltinDirtySet`）；
 //! `NUM_BUILTINS` 文档承载"新增 BuiltinWorld 字段须同步"四处约束注记。
 
@@ -11,7 +11,7 @@ use crate::builtin::BuiltinWorld;
 /// 维护注意：每个新增的 `BuiltinWorld` 对象字段都必须加到这里以及
 /// `KernelSession::dirty_since_snapshot()`，以便选择性重置重建正确的
 /// builtin 家族。
-pub const NUM_BUILTINS: usize = 85;
+pub const NUM_BUILTINS: usize = 87;
 
 /// 内置对象枚举 id，与 `BuiltinWorld` 中的存储槽一一对应。
 ///
@@ -105,6 +105,8 @@ pub enum BuiltinId {
     SharedArrayBufferConstructor = 82,
     AtomicsObject = 83,
     AsyncIteratorProto = 84,
+    MessagePortProto = 85,
+    MessageChannelCtor = 86,
 }
 
 impl BuiltinId {
@@ -197,6 +199,8 @@ impl BuiltinId {
         BuiltinId::SharedArrayBufferConstructor,
         BuiltinId::AtomicsObject,
         BuiltinId::AsyncIteratorProto,
+        BuiltinId::MessagePortProto,
+        BuiltinId::MessageChannelCtor,
     ];
 }
 
@@ -272,6 +276,7 @@ pub struct BuiltinDirtySet {
     pub stubs: bool,
     pub global: bool,
     pub console: bool,
+    pub message_channel: bool,
 }
 
 impl BuiltinDirtySet {
@@ -305,6 +310,7 @@ impl BuiltinDirtySet {
             stubs: true,
             global: true,
             console: true,
+            message_channel: true,
         }
     }
 
@@ -332,6 +338,7 @@ impl BuiltinDirtySet {
             || self.temporal
             || self.stubs
             || self.console
+            || self.message_channel
     }
 
     /// 是否存在任何污染（builtin world 或 global object）。
@@ -344,19 +351,21 @@ impl BuiltinDirtySet {
 mod tests {
     use super::*;
 
-    /// 槽对齐面：ALL 表与判别值 0..84 严格同序，快照数组随 NUM_BUILTINS
+    /// 槽对齐面：ALL 表与判别值 0..86 严格同序，快照数组随 NUM_BUILTINS
     /// 自动扩维、逐槽对齐。
     #[test]
     fn builtin_snapshot_all_slots_aligned() {
-        assert_eq!(NUM_BUILTINS, 85);
+        assert_eq!(NUM_BUILTINS, 87);
         assert_eq!(BuiltinId::ALL.len(), NUM_BUILTINS);
-        for i in 0..84usize {
+        for i in 0..86usize {
             assert_eq!(BuiltinId::ALL[i] as usize, i);
         }
         assert_eq!(BuiltinId::ALL[81], BuiltinId::SharedArrayBufferProto);
         assert_eq!(BuiltinId::ALL[82], BuiltinId::SharedArrayBufferConstructor);
         assert_eq!(BuiltinId::ALL[83], BuiltinId::AtomicsObject);
         assert_eq!(BuiltinId::ALL[84], BuiltinId::AsyncIteratorProto);
+        assert_eq!(BuiltinId::ALL[85], BuiltinId::MessagePortProto);
+        assert_eq!(BuiltinId::ALL[86], BuiltinId::MessageChannelCtor);
 
         // 快照经 session 全量构造路径采集，generations 数组维度 = 槽数。
         use crate::kernel::{KernelConfig, KernelCore, KernelSession};

crates/oxide_kernel/src/kernel/session.rs

@@ -196,6 +196,8 @@ impl KernelSession {
                 || gen(BuiltinId::BigIntProto) != snap(BuiltinId::BigIntProto),
             global: BuiltinSnapshot::gen(&self.global_object) != snapshot.global_object_generation,
             console: gen(BuiltinId::Console) != snap(BuiltinId::Console),
+            message_channel: gen(BuiltinId::MessagePortProto) != snap(BuiltinId::MessagePortProto)
+                || gen(BuiltinId::MessageChannelCtor) != snap(BuiltinId::MessageChannelCtor),
         };
         // wrapper 本体被写不落在任何家族位上（写的是 wrapper 自身而非所属 P
         // 对象）：收缩为全脏，强制重建全部家族与 global，使被写的可复用

crates/oxide_runtime_api/src/host.rs

@@ -100,6 +100,8 @@ pub enum ProtoKind {
     Float64ArrayConstructor,
     BigInt64ArrayConstructor,
     BigUint64ArrayConstructor,
+    // 消息通道原型
+    MessagePortProto,
 }
 
 /// builtins 依赖的 `Vm` 能力集合。

crates/oxide_vm/src/vm/vmhost.rs

@@ -142,6 +142,7 @@ impl oxide_runtime_api::VmHost for Vm {
             ProtoKind::Float64ArrayConstructor => &world.float64array_constructor,
             ProtoKind::BigInt64ArrayConstructor => &world.bigint64array_constructor,
             ProtoKind::BigUint64ArrayConstructor => &world.biguint64array_constructor,
+            ProtoKind::MessagePortProto => &world.message_port_proto,
         };
         P::as_ptr(p) as *mut JsObject
     }