WorkerLoaderProxy.h 2.8 KB

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  1. /*
  2. * Copyright (C) 2009 Google Inc. All rights reserved.
  3. *
  4. * Redistribution and use in source and binary forms, with or without
  5. * modification, are permitted provided that the following conditions are
  6. * met:
  7. *
  8. * * Redistributions of source code must retain the above copyright
  9. * notice, this list of conditions and the following disclaimer.
  10. * * Redistributions in binary form must reproduce the above
  11. * copyright notice, this list of conditions and the following disclaimer
  12. * in the documentation and/or other materials provided with the
  13. * distribution.
  14. * * Neither the name of Google Inc. nor the names of its
  15. * contributors may be used to endorse or promote products derived from
  16. * this software without specific prior written permission.
  17. *
  18. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21. * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22. * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24. * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25. * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26. * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28. * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29. */
  30. #ifndef WorkerLoaderProxy_h
  31. #define WorkerLoaderProxy_h
  32. #if ENABLE(WORKERS)
  33. #include "ScriptExecutionContext.h"
  34. #include <wtf/Forward.h>
  35. #include <wtf/PassOwnPtr.h>
  36. namespace WebCore {
  37. // A proxy to talk to the loader context. Normally, the document on the main thread
  38. // provides loading services for the subordinate workers. This interface provides 2-way
  39. // communications to the Document context and back to the worker.
  40. // Note that in multi-process browsers, the Worker object context and the Document
  41. // context can be distinct.
  42. class WorkerLoaderProxy {
  43. public:
  44. virtual ~WorkerLoaderProxy() { }
  45. // Posts a task to the thread which runs the loading code (normally, the main thread).
  46. virtual void postTaskToLoader(PassOwnPtr<ScriptExecutionContext::Task>) = 0;
  47. // Posts callbacks from loading code to the WorkerContext. The 'mode' is used to differentiate
  48. // specific synchronous loading requests so they can be 'nested', per spec.
  49. // Returns true if the task was posted successfully.
  50. virtual bool postTaskForModeToWorkerContext(PassOwnPtr<ScriptExecutionContext::Task>, const String& mode) = 0;
  51. };
  52. } // namespace WebCore
  53. #endif // ENABLE(WORKERS)
  54. #endif // WorkerLoaderProxy_h