DevTools Support for ServiceWoker.

content/browser/service_worker/embedded_worker_instance.h

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_INSTANCE_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_INSTANCE_H_
 
 #include <map>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback_forward.h"
 #include "base/gtest_prod_util.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/observer_list.h"
 #include "base/strings/string16.h"
 #include "content/common/content_export.h"
 #include "content/common/service_worker/service_worker_status_code.h"
+#include "url/gurl.h"
 
-class GURL;
+struct EmbeddedWorkerMsg_StartWorker_Params;
 
 namespace IPC {
 class Message;
 }
 
 namespace content {
 
 class EmbeddedWorkerRegistry;
+class ServiceWorkerContextCore;
 struct ServiceWorkerFetchRequest;
 
 // This gives an interface to control one EmbeddedWorker instance, which
 // may be 'in-waiting' or running in one of the child processes added by
 // AddProcessReference().
-class CONTENT_EXPORT EmbeddedWorkerInstance {
+class CONTENT_EXPORT EmbeddedWorkerInstance
+    : NON_EXPORTED_BASE(public base::SupportsWeakPtr<EmbeddedWorkerInstance>) {
  public:
   typedef base::Callback<void(ServiceWorkerStatusCode)> StatusCallback;
   enum Status {
     STOPPED,
     STARTING,
     RUNNING,
     STOPPING,
   };
 
   class Listener {
@@ skipping 16 matching lines @@
     virtual bool OnMessageReceived(const IPC::Message& message) = 0;
   };
 
   ~EmbeddedWorkerInstance();
 
   // Starts the worker. It is invalid to call this when the worker is not in
   // STOPPED status. |callback| is invoked when the worker's process is created
   // if necessary and the IPC to evaluate the worker's script is sent.
   // Observer::OnStarted() is run when the worker is actually started.
   void Start(int64 service_worker_version_id,
-             const GURL& scope,
              const GURL& script_url,
              const std::vector<int>& possible_process_ids,
              const StatusCallback& callback);
 
   // Stops the worker. It is invalid to call this when the worker is
   // not in STARTING or RUNNING status.
   // This returns false if stopping a worker fails immediately, e.g. when
   // IPC couldn't be sent to the worker.
   ServiceWorkerStatusCode Stop();
 
   // Sends |message| to the embedded worker running in the child process.
   // It is invalid to call this while the worker is not in RUNNING status.
   ServiceWorkerStatusCode SendMessage(const IPC::Message& message);
 
   // Add or remove |process_id| to the internal process set where this
   // worker can be started.
   void AddProcessReference(int process_id);
   void ReleaseProcessReference(int process_id);
   bool HasProcessToRun() const { return !process_refs_.empty(); }
 
   int embedded_worker_id() const { return embedded_worker_id_; }
   Status status() const { return status_; }
   int process_id() const { return process_id_; }
   int thread_id() const { return thread_id_; }
-  int worker_devtools_agent_route_id() const {
-    return worker_devtools_agent_route_id_;
-  }
 
   void AddListener(Listener* listener);
   void RemoveListener(Listener* listener);
 
  private:
   typedef ObserverList<Listener> ListenerList;
 
   friend class EmbeddedWorkerRegistry;
   FRIEND_TEST_ALL_PREFIXES(EmbeddedWorkerInstanceTest, StartAndStop);
 
   typedef std::map<int, int> ProcessRefMap;
 
   // Constructor is called via EmbeddedWorkerRegistry::CreateWorker().
   // This instance holds a ref of |registry|.
-  EmbeddedWorkerInstance(EmbeddedWorkerRegistry* registry,
-                         int embedded_worker_id);
+  EmbeddedWorkerInstance(base::WeakPtr<ServiceWorkerContextCore> context,
+                         int embedded_worker_id,
+                         const GURL& scope);
 
-  // Called back from EmbeddedWorkerRegistry after Start() passes control to the
-  // UI thread to acquire a reference to the process.
-  void RecordProcessId(int process_id,
-                       ServiceWorkerStatusCode status,
-                       int worker_devtools_agent_route_id);
+  // Called back from ServiceWorkerProcessManager after Start() passes control
+  // to the UI thread to acquire a reference to the process.
+  static void RunProcessAllocated(
+      base::WeakPtr<EmbeddedWorkerInstance> instance,
+      base::WeakPtr<ServiceWorkerContextCore> context,
+      scoped_ptr<EmbeddedWorkerMsg_StartWorker_Params> params,
+      const EmbeddedWorkerInstance::StatusCallback& callback,
+      ServiceWorkerStatusCode status,
+      int process_id);
+  void ProcessAllocated(scoped_ptr<EmbeddedWorkerMsg_StartWorker_Params> params,
+                        const StatusCallback& callback,
+                        int process_id,
+                        ServiceWorkerStatusCode status);
+  // Called back after ProcessAllocated() passes control to the UI thread to
+  // register to WorkerDevToolsManager.
+  static void RunSendStartWorker(
+      base::WeakPtr<EmbeddedWorkerInstance> instance,
+      scoped_ptr<EmbeddedWorkerMsg_StartWorker_Params> params,
+      const EmbeddedWorkerInstance::StatusCallback& callback,
+      int worker_devtools_agent_route_id,
+      bool pause_on_start);
+  void SendStartWorker(scoped_ptr<EmbeddedWorkerMsg_StartWorker_Params> params,
+                       const StatusCallback& callback);
 
   // Called back from Registry when the worker instance has ack'ed that
   // it finished loading the script.
   void OnScriptLoaded();
 
   // Called back from Registry when the worker instance has ack'ed that
   // it failed to load the script.
   void OnScriptLoadFailed();
 
   // Called back from Registry when the worker instance has ack'ed that
@@ skipping 24 matching lines @@
                               int message_level,
                               const base::string16& message,
                               int line_number,
                               const GURL& source_url);
 
   // Chooses a list of processes to try to start this worker in, ordered by how
   // many clients are currently in those processes.
   std::vector<int> SortProcesses(
       const std::vector<int>& possible_process_ids) const;
 
+  base::WeakPtr<ServiceWorkerContextCore> context_;
   scoped_refptr<EmbeddedWorkerRegistry> registry_;
   const int embedded_worker_id_;
+  const GURL scope_;
   Status status_;
 
   // Current running information. -1 indicates the worker is not running.
   int process_id_;
   int thread_id_;
   int worker_devtools_agent_route_id_;
 
   ProcessRefMap process_refs_;
   ListenerList listener_list_;
 
   DISALLOW_COPY_AND_ASSIGN(EmbeddedWorkerInstance);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_EMBEDDED_WORKER_INSTANCE_H_