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LibWeb+WebWorker: Move worker execution into a new WebWorker process

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We now create a WorkerAgent for the parent context, which is currently
only a Window. Note that Workers can have Workers per the spec.

The WorkerAgent spawns a WebWorker process to hold the actual
script execution of the Worker. This is modeled with the
DedicatedWorkerHost object in the WebWorker process.
A start_dedicated_worker IPC method in the WebWorker IPC creates the
WorkerHost object. Future different worker types may use different IPC
messages to create their WorkerHost instance.

This implementation cannot yet postMessage between the parent and the
child processes.

Co-Authored-By: Andreas Kling <kling@serenityos.org>
This commit is contained in:
Andrew Kaster 2023-11-08 11:47:41 -07:00 • committed by Andreas Kling
parent 3dbbb5b263
commit 124c378472
31 changed files with 998 additions and 267 deletions
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27
Userland/Libraries/LibWeb/HTML/Scripting/WorkerEnvironmentSettingsObject.h
View file

@ -7,7 +7,6 @@
#pragma once
#include <AK/URL.h>
#include <LibWeb/Bindings/DedicatedWorkerExposedInterfaces.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/Forward.h>
@ -18,27 +17,13 @@ class WorkerEnvironmentSettingsObject final
JS_CELL(WindowEnvironmentSettingsObject, EnvironmentSettingsObject);
public:
WorkerEnvironmentSettingsObject(NonnullOwnPtr<JS::ExecutionContext> execution_context)
WorkerEnvironmentSettingsObject(NonnullOwnPtr<JS::ExecutionContext> execution_context, JS::NonnullGCPtr<WorkerGlobalScope> global_scope)
: EnvironmentSettingsObject(move(execution_context))
, m_global_scope(global_scope)
{
}
static JS::NonnullGCPtr<WorkerEnvironmentSettingsObject> setup(NonnullOwnPtr<JS::ExecutionContext> execution_context /* FIXME: null or an environment reservedEnvironment, a URL topLevelCreationURL, and an origin topLevelOrigin */)
{
auto realm = execution_context->realm;
VERIFY(realm);
auto settings_object = realm->heap().allocate<WorkerEnvironmentSettingsObject>(*realm, move(execution_context));
settings_object->target_browsing_context = nullptr;
auto intrinsics = realm->heap().allocate<Bindings::Intrinsics>(*realm, *realm);
auto host_defined = make<Bindings::HostDefined>(settings_object, intrinsics);
realm->set_host_defined(move(host_defined));
// FIXME: Shared workers should use the shared worker method
Bindings::add_dedicated_worker_exposed_interfaces(realm->global_object());
return settings_object;
}
static JS::NonnullGCPtr<WorkerEnvironmentSettingsObject> setup(NonnullOwnPtr<JS::ExecutionContext> execution_context /* FIXME: null or an environment reservedEnvironment, a URL topLevelCreationURL, and an origin topLevelOrigin */);
virtual ~WorkerEnvironmentSettingsObject() override = default;
@ -47,13 +32,17 @@ public:
AK::URL api_base_url() override { return m_url; }
Origin origin() override { return m_origin; }
PolicyContainer policy_container() override { return m_policy_container; }
CanUseCrossOriginIsolatedAPIs cross_origin_isolated_capability() override { TODO(); }
CanUseCrossOriginIsolatedAPIs cross_origin_isolated_capability() override { return CanUseCrossOriginIsolatedAPIs::No; }
private:
virtual void visit_edges(JS::Cell::Visitor&) override;
DeprecatedString m_api_url_character_encoding;
AK::URL m_url;
HTML::Origin m_origin;
HTML::PolicyContainer m_policy_container;
JS::NonnullGCPtr<WorkerGlobalScope> m_global_scope;
};
}