extensions/renderer/worker_script_context_set.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef EXTENSIONS_RENDERER_WORKER_SCRIPT_CONTEXT_SET_H_
   6 #define EXTENSIONS_RENDERER_WORKER_SCRIPT_CONTEXT_SET_H_
   7
   8 #include "base/macros.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "base/memory/scoped_vector.h"
  11 #include "base/threading/thread_local.h"
  12 #include "content/public/child/worker_thread.h"
  13 #include "url/gurl.h"
  14 #include "v8/include/v8.h"
  15
  16 namespace extensions {
  17
  18 class ScriptContext;
  19
  20 // A set of ScriptContexts owned by worker threads. Thread safe.
  21 class WorkerScriptContextSet : public content::WorkerThread::Observer {
  22  public:
  23   WorkerScriptContextSet();
  24
  25   ~WorkerScriptContextSet() override;
  26
  27   // Inserts |context| into the set. Contexts are stored in TLS.
  28   void Insert(scoped_ptr<ScriptContext> context);
  29
  30   // Removes the ScriptContext associated with |v8_context| which was added for
  31   // |url| (used for sanity checking).
  32   void Remove(v8::Local<v8::Context> v8_context, const GURL& url);
  33
  34  private:
  35   // WorkerThread::Observer:
  36   void WillStopCurrentWorkerThread() override;
  37
  38   // Implement thread safety by storing each ScriptContext in TLS.
  39   base::ThreadLocalPointer<ScopedVector<ScriptContext>> contexts_tls_;
  40
  41   DISALLOW_COPY_AND_ASSIGN(WorkerScriptContextSet);
  42 };
  43
  44 }  // namespace extensions
  45
  46 #endif  // EXTENSIONS_RENDERER_WORKER_SCRIPT_CONTEXT_SET_H_