PPAPI: Make blocking completion callbacks work.

webkit/plugins/ppapi/ppb_file_io_impl.h

 // Copyright (c) 2012 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 WEBKIT_PLUGINS_PPAPI_PPB_FILE_IO_IMPL_H_
 #define WEBKIT_PLUGINS_PPAPI_PPB_FILE_IO_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "ppapi/shared_impl/ppb_file_io_shared.h"
 #include "webkit/plugins/ppapi/plugin_delegate.h"
 
-struct PP_CompletionCallback;
-
 namespace webkit {
 namespace ppapi {
 
 class QuotaFileIO;
 
 class PPB_FileIO_Impl : public ::ppapi::PPB_FileIO_Shared {
  public:
   explicit PPB_FileIO_Impl(PP_Instance instance);
   virtual ~PPB_FileIO_Impl();
 
   // PPB_FileIO_API implementation (most of the operations are implemented
   // as the "Validated" versions below).
   virtual void Close() OVERRIDE;
   virtual int32_t GetOSFileDescriptor() OVERRIDE;
-  virtual int32_t WillWrite(int64_t offset,
-                            int32_t bytes_to_write,
-                            PP_CompletionCallback callback) OVERRIDE;
-  virtual int32_t WillSetLength(int64_t length,
-                                PP_CompletionCallback callback) OVERRIDE;
+  virtual int32_t WillWrite(
+      int64_t offset,
+      int32_t bytes_to_write,
+      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
+  virtual int32_t WillSetLength(
+      int64_t length,
+      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
 
  private:
   // FileIOImpl overrides.
-  virtual int32_t OpenValidated(PP_Resource file_ref_resource,
-                                ::ppapi::thunk::PPB_FileRef_API* file_ref_api,
-                                int32_t open_flags,
-                                PP_CompletionCallback callback) OVERRIDE;
-  virtual int32_t QueryValidated(PP_FileInfo* info,
-                                 PP_CompletionCallback callback) OVERRIDE;
-  virtual int32_t TouchValidated(PP_Time last_access_time,
-                                 PP_Time last_modified_time,
-                                 PP_CompletionCallback callback) OVERRIDE;
-  virtual int32_t ReadValidated(int64_t offset,
-                                char* buffer,
-                                int32_t bytes_to_read,
-                                PP_CompletionCallback callback) OVERRIDE;
-  virtual int32_t WriteValidated(int64_t offset,
-                                 const char* buffer,
-                                 int32_t bytes_to_write,
-                                 PP_CompletionCallback callback) OVERRIDE;
-  virtual int32_t SetLengthValidated(int64_t length,
-                                     PP_CompletionCallback callback) OVERRIDE;
-  virtual int32_t FlushValidated(PP_CompletionCallback callback) OVERRIDE;
+  virtual int32_t OpenValidated(
+      PP_Resource file_ref_resource,
+      ::ppapi::thunk::PPB_FileRef_API* file_ref_api,
+      int32_t open_flags,
+      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
+  virtual int32_t QueryValidated(
+      PP_FileInfo* info,
+      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
+  virtual int32_t TouchValidated(
+      PP_Time last_access_time,
+      PP_Time last_modified_time,
+      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
+  virtual int32_t ReadValidated(
+      int64_t offset,
+      char* buffer,
+      int32_t bytes_to_read,
+      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
+  virtual int32_t WriteValidated(
+      int64_t offset,
+      const char* buffer,
+      int32_t bytes_to_write,
+      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
+  virtual int32_t SetLengthValidated(
+      int64_t length,
+      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
+  virtual int32_t FlushValidated(
+      scoped_refptr< ::ppapi::TrackedCallback> callback) OVERRIDE;
 
   // Returns the plugin delegate for this resource if it exists, or NULL if it
   // doesn't. Calling code should always check for NULL.
   PluginDelegate* GetPluginDelegate();
 
   // Callback handlers. These mostly convert the PlatformFileError to the
   // PP_Error code and call the shared (non-"Platform") version.
   void ExecutePlatformGeneralCallback(base::PlatformFileError error_code);
   void ExecutePlatformOpenFileCallback(base::PlatformFileError error_code,
                                        base::PassPlatformFile file);
@@ skipping 17 matching lines @@
 
   base::WeakPtrFactory<PPB_FileIO_Impl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(PPB_FileIO_Impl);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPB_FILE_IO_IMPL_H_