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Isolate and HandleScope

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This commit is contained in:
Karl Seguin
2025-12-31 18:52:47 +08:00
parent ca5a385b51
commit 363b95bdef
9 changed files with 224 additions and 91 deletions
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37
src/browser/js/Env.zig
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@@ -46,7 +46,7 @@ allocator: Allocator,
platform: *const Platform,
// the global isolate
isolate: v8.Isolate,
isolate: js.Isolate,
// just kept around because we need to free it on deinit
isolate_params: *v8.CreateParams,
@@ -67,28 +67,30 @@ pub fn init(allocator: Allocator, platform: *const Platform, snapshot: *Snapshot
params.external_references = &snapshot.external_references;
var isolate = v8.Isolate.init(params);
errdefer isolate.deinit();
var v8_isolate = v8.Isolate.init(params);
errdefer v8_isolate.deinit();
// This is the callback that runs whenever a module is dynamically imported.
isolate.setHostImportModuleDynamicallyCallback(Context.dynamicModuleCallback);
isolate.setPromiseRejectCallback(promiseRejectCallback);
isolate.setMicrotasksPolicy(v8.c.kExplicit);
v8_isolate.setHostImportModuleDynamicallyCallback(Context.dynamicModuleCallback);
v8_isolate.setPromiseRejectCallback(promiseRejectCallback);
v8_isolate.setMicrotasksPolicy(v8.c.kExplicit);
isolate.enter();
errdefer isolate.exit();
v8_isolate.enter();
errdefer v8_isolate.exit();
isolate.setHostInitializeImportMetaObjectCallback(Context.metaObjectCallback);
v8_isolate.setHostInitializeImportMetaObjectCallback(Context.metaObjectCallback);
const isolate = js.Isolate{ .handle = v8_isolate.handle };
// Allocate templates array dynamically to avoid comptime dependency on JsApis.len
const templates = try allocator.alloc(v8.FunctionTemplate, JsApis.len);
errdefer allocator.free(templates);
{
var temp_scope: v8.HandleScope = undefined;
v8.HandleScope.init(&temp_scope, isolate);
var temp_scope: js.HandleScope = undefined;
temp_scope.init(isolate);
defer temp_scope.deinit();
const context = v8.Context.init(isolate, null, null);
const context = v8.Context.init(v8_isolate, null, null);
context.enter();
defer context.exit();
@@ -97,7 +99,7 @@ pub fn init(allocator: Allocator, platform: *const Platform, snapshot: *Snapshot
JsApi.Meta.class_id = i;
const data = context.getDataFromSnapshotOnce(snapshot.data_start + i);
const function = v8.FunctionTemplate{ .handle = @ptrCast(data) };
templates[i] = v8.Persistent(v8.FunctionTemplate).init(isolate, function).castToFunctionTemplate();
templates[i] = v8.Persistent(v8.FunctionTemplate).init(v8_isolate, function).castToFunctionTemplate();
}
}
@@ -149,8 +151,8 @@ pub fn newExecutionWorld(self: *Env) !ExecutionWorld {
// `lowMemoryNotification` call on the isolate to encourage v8 to free
// any contexts which have been freed.
pub fn lowMemoryNotification(self: *Env) void {
var handle_scope: v8.HandleScope = undefined;
v8.HandleScope.init(&handle_scope, self.isolate);
var handle_scope: js.HandleScope = undefined;
handle_scope.init(self.isolate);
defer handle_scope.deinit();
self.isolate.lowMemoryNotification();
}
@@ -178,8 +180,9 @@ pub fn dumpMemoryStats(self: *Env) void {
fn promiseRejectCallback(v8_msg: v8.C_PromiseRejectMessage) callconv(.c) void {
const msg = v8.PromiseRejectMessage.initFromC(v8_msg);
const isolate = msg.getPromise().toObject().getIsolate();
const context = Context.fromIsolate(isolate);
const v8_isolate = msg.getPromise().toObject().getIsolate();
const js_isolate = js.Isolate{ .handle = v8_isolate.handle };
const context = Context.fromIsolate(js_isolate);
const value =
if (msg.getValue()) |v8_value|