storage/browser/fileapi/quota/quota_reservation_manager.cc

   1 // Copyright 2013 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 "storage/browser/fileapi/quota/quota_reservation_manager.h"
   6
   7 #include "storage/browser/fileapi/quota/quota_reservation.h"
   8 #include "storage/browser/fileapi/quota/quota_reservation_buffer.h"
   9
  10 namespace storage {
  11
  12 QuotaReservationManager::QuotaReservationManager(
  13     scoped_ptr<QuotaBackend> backend)
  14     : backend_(backend.Pass()),
  15       weak_ptr_factory_(this) {
  16   sequence_checker_.DetachFromSequence();
  17 }
  18
  19 QuotaReservationManager::~QuotaReservationManager() {
  20   DCHECK(sequence_checker_.CalledOnValidSequencedThread());
  21 }
  22
  23 void QuotaReservationManager::ReserveQuota(
  24     const GURL& origin,
  25     FileSystemType type,
  26     int64 size,
  27     const ReserveQuotaCallback& callback) {
  28   DCHECK(origin.is_valid());
  29   backend_->ReserveQuota(origin, type, size, callback);
  30 }
  31
  32 void QuotaReservationManager::ReleaseReservedQuota(
  33     const GURL& origin,
  34     FileSystemType type,
  35     int64 size) {
  36   DCHECK(origin.is_valid());
  37   backend_->ReleaseReservedQuota(origin, type, size);
  38 }
  39
  40 void QuotaReservationManager::CommitQuotaUsage(
  41     const GURL& origin,
  42     FileSystemType type,
  43     int64 delta) {
  44   DCHECK(origin.is_valid());
  45   backend_->CommitQuotaUsage(origin, type, delta);
  46 }
  47
  48 void QuotaReservationManager::IncrementDirtyCount(const GURL& origin,
  49                                                  FileSystemType type) {
  50   DCHECK(origin.is_valid());
  51   backend_->IncrementDirtyCount(origin, type);
  52 }
  53
  54 void QuotaReservationManager::DecrementDirtyCount(const GURL& origin,
  55                                                  FileSystemType type) {
  56   DCHECK(origin.is_valid());
  57   backend_->DecrementDirtyCount(origin, type);
  58 }
  59
  60 scoped_refptr<QuotaReservationBuffer>
  61 QuotaReservationManager::GetReservationBuffer(
  62     const GURL& origin,
  63     FileSystemType type) {
  64   DCHECK(sequence_checker_.CalledOnValidSequencedThread());
  65   DCHECK(origin.is_valid());
  66   QuotaReservationBuffer** buffer =
  67       &reservation_buffers_[std::make_pair(origin, type)];
  68   if (!*buffer) {
  69     *buffer = new QuotaReservationBuffer(
  70         weak_ptr_factory_.GetWeakPtr(), origin, type);
  71   }
  72   return make_scoped_refptr(*buffer);
  73 }
  74
  75 void QuotaReservationManager::ReleaseReservationBuffer(
  76     QuotaReservationBuffer* reservation_buffer) {
  77   DCHECK(sequence_checker_.CalledOnValidSequencedThread());
  78   std::pair<GURL, FileSystemType> key(reservation_buffer->origin(),
  79                                       reservation_buffer->type());
  80   DCHECK_EQ(reservation_buffers_[key], reservation_buffer);
  81   reservation_buffers_.erase(key);
  82 }
  83
  84 scoped_refptr<QuotaReservation> QuotaReservationManager::CreateReservation(
  85     const GURL& origin,
  86     FileSystemType type) {
  87   DCHECK(origin.is_valid());
  88   return GetReservationBuffer(origin, type)->CreateReservation();;
  89 }
  90
  91 }  // namespace storage