mirror of
https://github.com/pjh456/OxideJS.git
synced 2026-10-26 03:31:12 +08:00
feat: 端口与通道事件处理器改原型访问器加 dispatchEvent 交付
This commit is contained in:
@@ -1,6 +1,7 @@
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//! BroadcastChannel 行为面:`new BroadcastChannel(name)` 构造器(建通道对象并
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//! 登记 per-realm 注册表)、`postMessage` 原型方法(向同名全部其他通道同步
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//! 广播交付)、`close`(注销并关闭)、`onmessage` 普通 own 属性与 `name` /
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//! 广播交付)、`close`(注销并关闭)、`onmessage` / `onmessageerror` /
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//! `onerror` 原型访问器属性(经 dispatchEvent 交付 MessageEvent)与 `name` /
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//! `readyState` 原型 getter。
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//!
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//! 通道载荷盒(mpsc 对与通道名)存于对象 `native_fn` 槽,向 GC 家族表暴露
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@@ -12,7 +13,7 @@ use std::mem;
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use oxide_kernel::message_queue;
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use oxide_kernel::shape_forge::EMPTY_SHAPE_ID;
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use oxide_runtime_api::{to_string_full, NativeResult, ProtoKind, VmHost};
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use oxide_types::object::{JsObject, NativeFnPtr, PropAttributes};
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use oxide_types::object::{JsObject, NativeFnPtr};
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use oxide_types::value::JsValue;
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use crate::message_value::{detach_message, rehydrate_message, MessageValue};
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@@ -69,8 +70,8 @@ pub fn drop_broadcast_channel_native(obj: &mut JsObject) -> u64 {
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bytes
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}
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/// BroadcastChannel 构造器:建通道对象(载荷盒 + onmessage own 属性)并登记
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/// per-realm 注册表,返回通道对象。
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/// BroadcastChannel 构造器:建通道对象(载荷盒)并登记 per-realm 注册表,
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/// 返回通道对象。
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///
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/// # 步骤
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/// 1. 非构造形态(`!constructing_native`)抛 TypeError(HTML 规范只有
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@@ -79,8 +80,10 @@ pub fn drop_broadcast_channel_native(obj: &mut JsObject) -> u64 {
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/// 字符串经 ToPrimitive(string hint),Symbol 抛 TypeError,不静默降级)
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/// 3. 建 mpsc 通道(载荷类型 `MessageValue`),建通道对象(proto =
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/// %BroadcastChannel.prototype%,载荷盒入 native_fn 槽)
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/// 4. define onmessage 数据属性 = null(非枚举)
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/// 5. 登记通道对象进 per-realm 注册表(弱引用)
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/// 4. 登记通道对象进 per-realm 注册表(弱引用)
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///
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/// onmessage / onmessageerror / onerror 不在对象上建自有属性(改
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/// BroadcastChannel.prototype 访问器属性)。
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///
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/// # 副作用
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/// - 通道对象经 `alloc_object` 入对象表即成 GC 根;
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@@ -115,14 +118,9 @@ pub fn broadcast_channel_constructor<H: VmHost>(vm: &mut H, args: &[u8]) -> Nati
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obj.set_native_fn(Some(unsafe { NativeFnPtr::from_raw(inner as *const ()) }));
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let ptr = vm.alloc_object(obj);
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// onmessage:普通 own 数据属性(非枚举),初值 null。
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let si_onmessage = vm.perm_intern("onmessage");
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// SAFETY: ptr 是本函数刚 alloc_object 的通道对象,存活且本段无别名。
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unsafe {
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let channel_obj = &mut *ptr;
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let _ =
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vm.define_data_property(channel_obj, si_onmessage, JsValue::null(), PropAttributes::new(true, false, true));
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}
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// onmessage / onmessageerror / onerror 不在对象上建自有属性:改
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// BroadcastChannel.prototype 访问器属性(getter 读注册表属性条目、setter 写),
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// 经既有 dispatchEvent 路径交付。
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// 登记 per-realm 注册表(弱引用,不保活通道)。
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// SAFETY: 盒内 name 字段本函数所有,借用短命、不跨 JS 调用。
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@@ -202,59 +200,47 @@ pub fn broadcast_channel_post_message<H: VmHost>(vm: &mut H, args: &[u8]) -> Nat
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if !vm.bc_lookup(name).contains(peer_ptr) {
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continue;
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}
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if let Err(e) = drain_channel(vm, name, *peer_ptr) {
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if let Err(e) = drain_channel(vm, *peer_ptr) {
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return NativeResult::Err(e);
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}
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}
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NativeResult::Ok(JsValue::undefined())
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}
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/// 排空一个通道的队列:逐条 rehydrate 并触发其 onmessage。
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/// 排空一个通道的队列:逐条 rehydrate 建 MessageEvent 并经 `dispatchEvent`
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/// 交付到该通道(注册表查监听器,addEventListener 与属性 handler 同权)。
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///
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/// # 步骤
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/// 1. 读通道载荷盒(通道必存活——调用前已校验),盒缺失防御性返回 Ok
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/// 2. try_recv 循环:Empty / Disconnected 退出;`rehydrate_message` 得 data;
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/// `ordinary_get` 读 handler(读期用户代码窗口,异常原值透传);读后二次
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/// 校验存活(getter 窗口 GC 防护);handler 是函数则
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/// `call_function_sync(handler, channel, [data])`(用户异常原值透传,返回
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/// Err 结束 drain);handler 非函数(null / undefined / 非函数)则静默丢弃该条
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/// 建真实 MessageEvent(data + type "message",ports 空数组)
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/// 3. 经 `dispatchEvent` 交付(this = 通道,实参 = 事件);监听器异常原值
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/// 透传(返回 Err 结束 drain);无监听器时 no-op
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///
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/// # 边界与前提
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/// - rehydrate 新对象经 `alloc_object` 入对象表即成根,交付后无引用自然回收;
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/// - 同步重入:handler 内再 postMessage 同通道则嵌套 drain(try_recv 非阻塞,无死锁)。
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fn drain_channel<H: VmHost>(vm: &mut H, name: &str, channel: *mut JsObject) -> Result<(), JsValue> {
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/// - rehydrate 新对象与事件盒经 `alloc_object` 入对象表即成根,交付后无引用自然回收;
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/// - 同步重入:handler 内再 postMessage 同通道则嵌套 drain(try_recv 非阻塞,无死锁);
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/// - messageerror 交付路径为前向钩子(rehydrate 当前不可失败,触发点不可达)。
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fn drain_channel<H: VmHost>(vm: &mut H, channel: *mut JsObject) -> Result<(), JsValue> {
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// SAFETY: channel 是有效通道对象(调用前已校验存活)。
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let channel_obj = unsafe { &*channel };
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let Some(inner_ptr) = broadcast_channel_payload_ptr(channel_obj) else {
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return Ok(());
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};
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let channel_val = JsValue::from_js_object(channel);
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let si_onmessage = vm.perm_intern("onmessage");
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// SAFETY: inner_ptr 是有效载荷盒,rx 的 try_recv 非阻塞、不跨 JS 调用。
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while let Ok(mv) = unsafe { (*inner_ptr).rx.try_recv() } {
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let data = rehydrate_message(vm, &mv);
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let handler = match vm.ordinary_get(channel_obj, si_onmessage, channel_val) {
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Ok(h) => h,
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Err(e) => {
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if let Some(exc) = vm.take_uncaught_value() {
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return Err(exc);
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}
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return Err(crate::error::create_type_error(vm, &e));
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}
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};
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// getter 窗口二次校验:onmessage 读取是用户代码窗口,期间 GC 可释放本
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// 通道并剪枝注册表条目;校验失败即停止 drain(data 是根,无悬垂)。
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if !vm.bc_lookup(name).contains(&channel) {
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return Ok(());
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}
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if !crate::iterator::is_callable(handler) {
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continue;
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}
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if let Err(e) = vm.call_function_sync(handler, channel_val, &[data]) {
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if let Some(exc) = vm.take_uncaught_value() {
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return Err(exc);
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}
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return Err(crate::iterator::engine_error(vm, &e));
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// 建真实 MessageEvent(data + type "message",ports 空数组)。
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let event_ptr = crate::event::create_message_event_box(vm, data, "message");
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let event_val = JsValue::from_js_object(event_ptr);
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// 经 dispatchEvent 交付(注册表查监听器,addEventListener 与属性 handler 同权)。
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vm.set_reg(0, channel_val);
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vm.set_reg(1, event_val);
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match crate::event_target::event_target_dispatch_event(vm, &[0, 1]) {
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NativeResult::Ok(_) => {}
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NativeResult::Err(e) => return Err(e),
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NativeResult::TailCall { .. } => {}
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}
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}
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Ok(())
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@@ -433,18 +419,23 @@ mod tests {
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}
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#[test]
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fn channel_onmessage_is_own_non_enumerable() {
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fn channel_onmessage_is_prototype_accessor() {
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// onmessage 是原型访问器属性(非自有属性):getOwnPropertyDescriptor
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// 返 undefined,原型描述符带 get / set 函数。
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assert_script(
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r#"
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(function() {
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var ch = new BroadcastChannel("test");
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var desc = Object.getOwnPropertyDescriptor(ch, 'onmessage');
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var ownDesc = Object.getOwnPropertyDescriptor(ch, 'onmessage');
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var protoDesc = Object.getOwnPropertyDescriptor(Object.getPrototypeOf(ch), 'onmessage');
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return (
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desc !== undefined &&
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desc.value === null &&
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desc.writable === true &&
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desc.enumerable === false &&
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desc.configurable === true
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ownDesc === undefined &&
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ch.onmessage === null &&
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protoDesc !== undefined &&
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typeof protoDesc.get === 'function' &&
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typeof protoDesc.set === 'function' &&
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protoDesc.enumerable === false &&
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protoDesc.configurable === true
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);
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})()
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"#,
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@@ -461,8 +452,8 @@ mod tests {
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var ch2 = new BroadcastChannel("basic");
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var received2 = null;
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var received1 = null;
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ch1.onmessage = function(d) { received1 = d; };
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ch2.onmessage = function(d) { received2 = d; };
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ch1.onmessage = function(e) { received1 = e.data; };
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ch2.onmessage = function(e) { received2 = e.data; };
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ch1.postMessage({a: 1});
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return received2 !== null && received2.a === 1 && received1 === null;
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})()
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@@ -478,7 +469,7 @@ mod tests {
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var ch1 = new BroadcastChannel("roundtrip");
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var ch2 = new BroadcastChannel("roundtrip");
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var got = null;
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ch2.onmessage = function(d) { got = d; };
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ch2.onmessage = function(e) { got = e.data; };
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ch1.postMessage({
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num: 42,
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neg: -1.5,
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@@ -523,7 +514,7 @@ mod tests {
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var ch2 = new BroadcastChannel("clone");
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var ab = new ArrayBuffer(4);
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var received = null;
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ch2.onmessage = function(d) { received = d; };
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ch2.onmessage = function(e) { received = e.data; };
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ch1.postMessage(ab);
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return ab.byteLength === 4 && received.byteLength === 4 && received !== ab;
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})()
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@@ -643,9 +634,9 @@ mod tests {
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var r1 = null;
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var r2 = null;
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var r3 = null;
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ch1.onmessage = function(d) { r1 = d; };
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ch2.onmessage = function(d) { r2 = d; };
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ch3.onmessage = function(d) { r3 = d; };
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ch1.onmessage = function(e) { r1 = e.data; };
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ch2.onmessage = function(e) { r2 = e.data; };
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ch3.onmessage = function(e) { r3 = e.data; };
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ch1.postMessage({a: 1});
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return r2 !== null && r2.a === 1 && r3 !== null && r3.a === 1 && r1 === null;
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})()
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@@ -1,6 +1,7 @@
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//! MessageChannel / MessagePort 行为面:`MessageChannel` 构造器(建双向 mpsc
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//! 通道与两枚端口对象)、`MessagePort` 原型方法(postMessage 同步交付 /
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//! close / start / readyState)与 `onmessage` 属性。
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//! close / start / readyState)与 `onmessage` / `onmessageerror` / `onerror`
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//! 原型访问器属性(经 dispatchEvent 交付 MessageEvent)。
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//!
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//! 端口载荷盒(mpsc 双端与对端端口边)存于对象 `native_fn` 槽,向 GC 家族表
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//! 暴露 edges/size/drop 三自由函数。
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@@ -96,10 +97,12 @@ pub fn drop_message_port_native(obj: &mut JsObject) -> u64 {
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/// 2. 建两条 mpsc 通道(A→B 与 B→A),载荷类型 `MessageValue`
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/// 3. 建两枚端口对象(proto = %MessagePort.prototype%,载荷盒入 native_fn 槽)
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/// 4. 回填双向 peer_port(裸指针写,跨 JS 调用不持借用)
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/// 5. 两端口各 define onmessage 数据属性 = null(非枚举)
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/// 6. 建 plain 结果对象(proto = %Object.prototype%),define 可枚举
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/// 5. 建 plain 结果对象(proto = %Object.prototype%),define 可枚举
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/// port1 / port2
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///
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/// onmessage / onmessageerror / onerror 不在对象上建自有属性(改
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/// MessagePort.prototype 访问器属性)。
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///
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/// # 副作用
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/// - 两端口对象经 `alloc_object` 入对象表即成 GC 根;
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/// - 双向 peer_port 边闭合环(两端口自然共亡拆环)。
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@@ -126,15 +129,9 @@ pub fn message_channel_constructor<H: VmHost>(vm: &mut H, _args: &[u8]) -> Nativ
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(*b_inner).peer_port = a_ptr;
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}
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// onmessage:普通 own 数据属性(非枚举),初值 null。
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let si_onmessage = vm.perm_intern("onmessage");
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// SAFETY: a_ptr / b_ptr 是本函数刚 alloc_object 的端口对象,存活且本段无别名。
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unsafe {
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let a_obj = &mut *a_ptr;
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let _ = vm.define_data_property(a_obj, si_onmessage, JsValue::null(), PropAttributes::new(true, false, true));
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let b_obj = &mut *b_ptr;
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let _ = vm.define_data_property(b_obj, si_onmessage, JsValue::null(), PropAttributes::new(true, false, true));
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}
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// onmessage / onmessageerror / onerror 不在对象上建自有属性:改
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// MessagePort.prototype 访问器属性(getter 读注册表属性条目、setter 写),
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// 经既有 dispatchEvent 路径交付。
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// 结果对象:plain 对象(proto = %Object.prototype%),两枚可枚举 port1 / port2。
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let object_proto = JsValue::from_js_object(vm.builtin_proto(ProtoKind::ObjectProto));
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@@ -226,18 +223,20 @@ pub fn message_port_post_message<H: VmHost>(vm: &mut H, args: &[u8]) -> NativeRe
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}
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}
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/// 排空对端队列:逐条 rehydrate 并触发对端 onmessage。
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/// 排空对端队列:逐条 rehydrate 建 MessageEvent 并经 `dispatchEvent` 交付
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/// 到对端端口(注册表查监听器,addEventListener 与属性 handler 同权)。
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///
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/// # 步骤
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/// 1. 读对端载荷盒(对端必存活——双向 GC 边),盒缺失防御性返回 Ok
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/// 2. try_recv 循环:Empty / Disconnected 退出;`rehydrate_message` 得 data;
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/// `ordinary_get` 读 handler(读期用户代码窗口,异常原值透传);handler 是
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/// 函数则 `call_function_sync(handler, peer, [data])`(用户异常原值透传,
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/// 返回 Err 结束 drain);handler 非函数(null / undefined / 非函数)则静默丢弃该条
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/// 建真实 MessageEvent(data + type "message",ports 空数组)
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/// 3. 经 `dispatchEvent` 交付(this = 对端端口,实参 = 事件);监听器异常
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/// 原值透传(返回 Err 结束 drain);无监听器时 no-op
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///
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/// # 边界与前提
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/// - rehydrate 新对象经 `alloc_object` 入对象表即成根,交付后无引用自然回收;
|
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/// - 同步重入:handler 内再 postMessage 同通道则嵌套 drain(try_recv 非阻塞,无死锁)。
|
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/// - rehydrate 新对象与事件盒经 `alloc_object` 入对象表即成根,交付后无引用自然回收;
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/// - 同步重入:handler 内再 postMessage 同通道则嵌套 drain(try_recv 非阻塞,无死锁);
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/// - messageerror 交付路径为前向钩子(rehydrate 当前不可失败,触发点不可达)。
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fn drain_port<H: VmHost>(vm: &mut H, peer_port: *mut JsObject) -> Result<(), JsValue> {
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// SAFETY: peer_port 是有效端口对象(双向 GC 边保活)。
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let peer_obj = unsafe { &*peer_port };
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@@ -245,27 +244,19 @@ fn drain_port<H: VmHost>(vm: &mut H, peer_port: *mut JsObject) -> Result<(), JsV
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return Ok(());
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};
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let peer_val = JsValue::from_js_object(peer_port);
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let si_onmessage = vm.perm_intern("onmessage");
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// SAFETY: inner_ptr 是有效载荷盒,rx 的 try_recv 非阻塞、不跨 JS 调用。
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while let Ok(mv) = unsafe { (*inner_ptr).rx.try_recv() } {
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let data = rehydrate_message(vm, &mv);
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let handler = match vm.ordinary_get(peer_obj, si_onmessage, peer_val) {
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Ok(h) => h,
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Err(e) => {
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if let Some(exc) = vm.take_uncaught_value() {
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return Err(exc);
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}
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return Err(crate::error::create_type_error(vm, &e));
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}
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};
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if !crate::iterator::is_callable(handler) {
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continue;
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}
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if let Err(e) = vm.call_function_sync(handler, peer_val, &[data]) {
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if let Some(exc) = vm.take_uncaught_value() {
|
||||
return Err(exc);
|
||||
}
|
||||
return Err(crate::iterator::engine_error(vm, &e));
|
||||
// 建真实 MessageEvent(data + type "message",ports 空数组)。
|
||||
let event_ptr = crate::event::create_message_event_box(vm, data, "message");
|
||||
let event_val = JsValue::from_js_object(event_ptr);
|
||||
// 经 dispatchEvent 交付(注册表查监听器,addEventListener 与属性 handler 同权)。
|
||||
vm.set_reg(0, peer_val);
|
||||
vm.set_reg(1, event_val);
|
||||
match crate::event_target::event_target_dispatch_event(vm, &[0, 1]) {
|
||||
NativeResult::Ok(_) => {}
|
||||
NativeResult::Err(e) => return Err(e),
|
||||
NativeResult::TailCall { .. } => {}
|
||||
}
|
||||
}
|
||||
Ok(())
|
||||
@@ -456,19 +447,24 @@ mod tests {
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn port_onmessage_is_own_non_enumerable() {
|
||||
fn port_onmessage_is_prototype_accessor() {
|
||||
// onmessage 是原型访问器属性(非自有属性):getOwnPropertyDescriptor
|
||||
// 返 undefined,原型描述符带 get / set 函数。
|
||||
assert_script(
|
||||
r#"
|
||||
(function() {
|
||||
var ch = new MessageChannel();
|
||||
var p = ch.port1;
|
||||
var desc = Object.getOwnPropertyDescriptor(p, 'onmessage');
|
||||
var ownDesc = Object.getOwnPropertyDescriptor(p, 'onmessage');
|
||||
var protoDesc = Object.getOwnPropertyDescriptor(Object.getPrototypeOf(p), 'onmessage');
|
||||
return (
|
||||
desc !== undefined &&
|
||||
desc.value === null &&
|
||||
desc.writable === true &&
|
||||
desc.enumerable === false &&
|
||||
desc.configurable === true
|
||||
ownDesc === undefined &&
|
||||
p.onmessage === null &&
|
||||
protoDesc !== undefined &&
|
||||
typeof protoDesc.get === 'function' &&
|
||||
typeof protoDesc.set === 'function' &&
|
||||
protoDesc.enumerable === false &&
|
||||
protoDesc.configurable === true
|
||||
);
|
||||
})()
|
||||
"#,
|
||||
@@ -477,12 +473,13 @@ mod tests {
|
||||
|
||||
#[test]
|
||||
fn basic_delivery_object() {
|
||||
// handler 收到 MessageEvent,消息值经 e.data 访问。
|
||||
assert_script(
|
||||
r#"
|
||||
(function() {
|
||||
var ch = new MessageChannel();
|
||||
var received = null;
|
||||
ch.port2.onmessage = function(d) { received = d; };
|
||||
ch.port2.onmessage = function(e) { received = e.data; };
|
||||
ch.port1.postMessage({a: 1});
|
||||
return received !== null && received.a === 1;
|
||||
})()
|
||||
@@ -497,7 +494,7 @@ mod tests {
|
||||
(function() {
|
||||
var ch = new MessageChannel();
|
||||
var got = null;
|
||||
ch.port2.onmessage = function(d) { got = d; };
|
||||
ch.port2.onmessage = function(e) { got = e.data; };
|
||||
ch.port1.postMessage({
|
||||
num: 42,
|
||||
neg: -1.5,
|
||||
@@ -538,7 +535,7 @@ mod tests {
|
||||
var ch = new MessageChannel();
|
||||
var ab = new ArrayBuffer(8);
|
||||
var received = null;
|
||||
ch.port2.onmessage = function(d) { received = d; };
|
||||
ch.port2.onmessage = function(e) { received = e.data; };
|
||||
ch.port1.postMessage(ab, [ab]);
|
||||
return ab.byteLength === 0 && received.byteLength === 8;
|
||||
})()
|
||||
@@ -555,7 +552,7 @@ mod tests {
|
||||
var ch = new MessageChannel();
|
||||
var ab = new ArrayBuffer(4);
|
||||
var received = null;
|
||||
ch.port2.onmessage = function(d) { received = d; };
|
||||
ch.port2.onmessage = function(e) { received = e.data; };
|
||||
ch.port1.postMessage(ab);
|
||||
return ab.byteLength === 4 && received.byteLength === 4 && received !== ab;
|
||||
})()
|
||||
@@ -751,7 +748,7 @@ mod tests {
|
||||
var received = null;
|
||||
(function() {
|
||||
var p2 = ch.port2;
|
||||
p2.onmessage = function(d) { received = d; };
|
||||
p2.onmessage = function(e) { received = e.data; };
|
||||
})();
|
||||
$262.gc();
|
||||
p1.postMessage({x: 42});
|
||||
|
||||
Reference in New Issue
Block a user