Auto merge of #26087 - gterzian:allow_service_workers_in_multiprocess, r=jdm

Fix ServiceWorker in multiprocess

<!-- Please describe your changes on the following line: -->

FIX #15217
FIX #26100

---
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- [ ] `./mach test-tidy` does not report any errors
- [ ] These changes fix #___ (GitHub issue number if applicable)

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- [ ] There are tests for these changes OR
- [ ] These changes do not require tests because ___

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3 files changed, 44 insertions, 31 deletions

diff --git a/components/script/init.rs b/components/script/init.rs
index 30e01dda74e..823f045fad4 100644
--- a/components/script/init.rs
+++ b/components/script/init.rs
@@ -5,8 +5,6 @@
 use crate::dom::bindings::codegen::RegisterBindings;
 use crate::dom::bindings::proxyhandler;
 use crate::script_runtime::JSEngineSetup;
-use crate::serviceworker_manager::ServiceWorkerManager;
-use script_traits::SWManagerSenders;
 
 #[cfg(target_os = "linux")]
 #[allow(unsafe_code)]
@@ -51,11 +49,6 @@ fn perform_platform_specific_initialization() {
 #[cfg(not(target_os = "linux"))]
 fn perform_platform_specific_initialization() {}
 
-pub fn init_service_workers(sw_senders: SWManagerSenders) {
-    // Spawn the service worker manager passing the constellation sender
-    ServiceWorkerManager::spawn_manager(sw_senders);
-}
-
 #[allow(unsafe_code)]
 pub fn init() -> JSEngineSetup {
     unsafe {
diff --git a/components/script/lib.rs b/components/script/lib.rs
index 13791748931..07090f4716b 100644
--- a/components/script/lib.rs
+++ b/components/script/lib.rs
@@ -91,7 +91,7 @@ pub mod script_runtime;
 #[allow(unsafe_code)]
 pub mod script_thread;
 #[warn(deprecated)]
-mod serviceworker_manager;
+pub mod serviceworker_manager;
 #[warn(deprecated)]
 mod serviceworkerjob;
 #[warn(deprecated)]
@@ -115,7 +115,7 @@ mod unpremultiplytable;
 #[warn(deprecated)]
 mod webdriver_handlers;
 
-pub use init::{init, init_service_workers};
+pub use init::init;
 pub use script_runtime::JSEngineSetup;
 
 /// A module with everything layout can use from script.
diff --git a/components/script/serviceworker_manager.rs b/components/script/serviceworker_manager.rs
index 109628ae94e..83bf1dbf312 100644
--- a/components/script/serviceworker_manager.rs
+++ b/components/script/serviceworker_manager.rs
@@ -15,8 +15,12 @@ use devtools_traits::{DevtoolsPageInfo, ScriptToDevtoolsControlMsg};
 use ipc_channel::ipc::{self, IpcSender};
 use ipc_channel::router::ROUTER;
 use net_traits::{CoreResourceMsg, CustomResponseMediator};
-use script_traits::{DOMMessage, SWManagerMsg, SWManagerSenders, ScopeThings, ServiceWorkerMsg};
+use script_traits::{
+    DOMMessage, SWManagerMsg, SWManagerSenders, ScopeThings, ServiceWorkerManagerFactory,
+    ServiceWorkerMsg,
+};
 use servo_config::pref;
+use servo_url::ImmutableOrigin;
 use servo_url::ServoUrl;
 use std::collections::HashMap;
 use std::thread;
@@ -31,6 +35,9 @@ pub struct ServiceWorkerManager {
     registered_workers: HashMap<ServoUrl, ScopeThings>,
     // map of active service worker descriptors
     active_workers: HashMap<ServoUrl, Sender<ServiceWorkerScriptMsg>>,
+    // Will be useful to implement posting a message to a client.
+    // See https://github.com/servo/servo/issues/24660
+    _constellation_sender: IpcSender<SWManagerMsg>,
     // own sender to send messages here
     own_sender: IpcSender<ServiceWorkerMsg>,
     // receiver to receive messages from constellation
@@ -44,6 +51,7 @@ impl ServiceWorkerManager {
         own_sender: IpcSender<ServiceWorkerMsg>,
         from_constellation_receiver: Receiver<ServiceWorkerMsg>,
         resource_port: Receiver<CustomResponseMediator>,
+        constellation_sender: IpcSender<SWManagerMsg>,
     ) -> ServiceWorkerManager {
         ServiceWorkerManager {
             registered_workers: HashMap::new(),
@@ -51,30 +59,10 @@ impl ServiceWorkerManager {
             own_sender: own_sender,
             own_port: from_constellation_receiver,
             resource_receiver: resource_port,
+            _constellation_sender: constellation_sender,
         }
     }
 
-    pub fn spawn_manager(sw_senders: SWManagerSenders) {
-        let (own_sender, from_constellation_receiver) = ipc::channel().unwrap();
-        let (resource_chan, resource_port) = ipc::channel().unwrap();
-        let from_constellation =
-            ROUTER.route_ipc_receiver_to_new_crossbeam_receiver(from_constellation_receiver);
-        let resource_port = ROUTER.route_ipc_receiver_to_new_crossbeam_receiver(resource_port);
-        let _ = sw_senders
-            .resource_sender
-            .send(CoreResourceMsg::NetworkMediator(resource_chan));
-        let _ = sw_senders
-            .swmanager_sender
-            .send(SWManagerMsg::OwnSender(own_sender.clone()));
-        thread::Builder::new()
-            .name("ServiceWorkerManager".to_owned())
-            .spawn(move || {
-                ServiceWorkerManager::new(own_sender, from_constellation, resource_port)
-                    .handle_message();
-            })
-            .expect("Thread spawning failed");
-    }
-
     pub fn get_matching_scope(&self, load_url: &ServoUrl) -> Option<ServoUrl> {
         for scope in self.registered_workers.keys() {
             if longest_prefix_match(&scope, load_url) {
@@ -203,6 +191,38 @@ impl ServiceWorkerManager {
     }
 }
 
+impl ServiceWorkerManagerFactory for ServiceWorkerManager {
+    fn create(sw_senders: SWManagerSenders, origin: ImmutableOrigin) {
+        let (resource_chan, resource_port) = ipc::channel().unwrap();
+
+        let SWManagerSenders {
+            resource_sender,
+            own_sender,
+            receiver,
+            swmanager_sender: constellation_sender,
+        } = sw_senders;
+
+        let from_constellation = ROUTER.route_ipc_receiver_to_new_crossbeam_receiver(receiver);
+        let resource_port = ROUTER.route_ipc_receiver_to_new_crossbeam_receiver(resource_port);
+        let _ = resource_sender.send(CoreResourceMsg::NetworkMediator(resource_chan, origin));
+        if thread::Builder::new()
+            .name("ServiceWorkerManager".to_owned())
+            .spawn(move || {
+                ServiceWorkerManager::new(
+                    own_sender,
+                    from_constellation,
+                    resource_port,
+                    constellation_sender,
+                )
+                .handle_message();
+            })
+            .is_err()
+        {
+            warn!("ServiceWorkerManager thread spawning failed");
+        }
+    }
+}
+
 pub fn serviceworker_enabled() -> bool {
     pref!(dom.serviceworker.enabled)
 }