content/browser/fileapi/chrome_blob_storage_context.cc

   1 // Copyright (c) 2012 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 #include "content/browser/fileapi/chrome_blob_storage_context.h"
   6
   7 #include "base/bind.h"
   8 #include "content/public/browser/browser_context.h"
   9 #include "content/public/browser/browser_thread.h"
  10 #include "webkit/browser/blob/blob_storage_context.h"
  11
  12 using base::UserDataAdapter;
  13 using webkit_blob::BlobStorageContext;
  14
  15 namespace content {
  16
  17 static const char* kBlobStorageContextKeyName = "content_blob_storage_context";
  18
  19 ChromeBlobStorageContext::ChromeBlobStorageContext() {}
  20
  21 ChromeBlobStorageContext* ChromeBlobStorageContext::GetFor(
  22     BrowserContext* context) {
  23   if (!context->GetUserData(kBlobStorageContextKeyName)) {
  24     scoped_refptr<ChromeBlobStorageContext> blob =
  25         new ChromeBlobStorageContext();
  26     context->SetUserData(
  27         kBlobStorageContextKeyName,
  28         new UserDataAdapter<ChromeBlobStorageContext>(blob.get()));
  29     // Check first to avoid memory leak in unittests.
  30     if (BrowserThread::IsMessageLoopValid(BrowserThread::IO)) {
  31       BrowserThread::PostTask(
  32           BrowserThread::IO, FROM_HERE,
  33           base::Bind(&ChromeBlobStorageContext::InitializeOnIOThread, blob));
  34     }
  35   }
  36
  37   return UserDataAdapter<ChromeBlobStorageContext>::Get(
  38       context, kBlobStorageContextKeyName);
  39 }
  40
  41 void ChromeBlobStorageContext::InitializeOnIOThread() {
  42   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
  43   context_.reset(new BlobStorageContext());
  44 }
  45
  46 ChromeBlobStorageContext::~ChromeBlobStorageContext() {}
  47
  48 void ChromeBlobStorageContext::DeleteOnCorrectThread() const {
  49   if (BrowserThread::IsMessageLoopValid(BrowserThread::IO) &&
  50       !BrowserThread::CurrentlyOn(BrowserThread::IO)) {
  51     BrowserThread::DeleteSoon(BrowserThread::IO, FROM_HERE, this);
  52     return;
  53   }
  54   delete this;
  55 }
  56
  57 }  // namespace content