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Add MessageChannel

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This commit is contained in:
Karl Seguin
2025-07-18 16:47:04 +08:00
parent 878dbd81b1
commit 058a5a43ba
7 changed files with 383 additions and 17 deletions
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26
src/runtime/js.zig
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@@ -634,13 +634,15 @@ pub fn Env(comptime State: type, comptime WebApis: type) type {
// The key is the @intFromPtr of the Zig value
identity_map: std.AutoHashMapUnmanaged(usize, PersistentObject) = .empty,
// Similar to the identity map, but used much less frequently. Some
// web APIs have to manage opaque values. Ideally, they use an
// Some web APIs have to manage opaque values. Ideally, they use an
// JsObject, but the JsObject has no lifetime guarantee beyond the
// current call. They can call .persist() on their JsObject to get
// a `*PersistentObject()`. We need to track these to free them.
// The key is the @intFromPtr of the v8.Object.handle.
js_object_map: std.AutoHashMapUnmanaged(usize, PersistentObject) = .empty,
// This used to be a map and acted like identity_map; the key was
// the @intFromPtr(js_obj.handle). But v8 can re-use address. Without
// a reliable way to know if an object has already been persisted,
// we now simply persist every time persist() is called.
js_object_list: std.ArrayListUnmanaged(PersistentObject) = .empty,
// When we need to load a resource (i.e. an external script), we call
// this function to get the source. This is always a reference to the
@@ -690,11 +692,8 @@ pub fn Env(comptime State: type, comptime WebApis: type) type {
}
}
{
var it = self.js_object_map.valueIterator();
while (it.next()) |p| {
p.deinit();
}
for (self.js_object_list.items) |*p| {
p.deinit();
}
{
@@ -1883,16 +1882,13 @@ pub fn Env(comptime State: type, comptime WebApis: type) type {
pub fn persist(self: JsObject) !JsObject {
var js_context = self.js_context;
const js_obj = self.js_obj;
const handle = js_obj.handle;
const gop = try js_context.js_object_map.getOrPut(js_context.context_arena, @intFromPtr(handle));
if (gop.found_existing == false) {
gop.value_ptr.* = PersistentObject.init(js_context.isolate, js_obj);
}
const persisted = PersistentObject.init(js_context.isolate, js_obj);
try js_context.js_object_list.append(js_context.context_arena, persisted);
return .{
.js_context = js_context,
.js_obj = gop.value_ptr.castToObject(),
.js_obj = persisted.castToObject(),
};
}