content/child/service_worker/service_worker_network_provider.cc

   1 // Copyright 2014 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/child/service_worker/service_worker_network_provider.h"
   6
   7 #include "base/atomic_sequence_num.h"
   8 #include "content/child/child_thread.h"
   9 #include "content/child/service_worker/service_worker_provider_context.h"
  10 #include "content/common/service_worker/service_worker_messages.h"
  11
  12 namespace content {
  13
  14 namespace {
  15
  16 const char kUserDataKey[] = "SWProviderKey";
  17
  18 // Must be unique in the child process.
  19 int GetNextProviderId() {
  20   static base::StaticAtomicSequenceNumber sequence;
  21   return sequence.GetNext();  // We start at zero.
  22 }
  23
  24 }  // namespace
  25
  26 void ServiceWorkerNetworkProvider::AttachToDocumentState(
  27     base::SupportsUserData* datasource_userdata,
  28     scoped_ptr<ServiceWorkerNetworkProvider> network_provider) {
  29   datasource_userdata->SetUserData(&kUserDataKey, network_provider.release());
  30 }
  31
  32 ServiceWorkerNetworkProvider* ServiceWorkerNetworkProvider::FromDocumentState(
  33     base::SupportsUserData* datasource_userdata) {
  34   return static_cast<ServiceWorkerNetworkProvider*>(
  35       datasource_userdata->GetUserData(&kUserDataKey));
  36 }
  37
  38 ServiceWorkerNetworkProvider::ServiceWorkerNetworkProvider(int render_frame_id)
  39     : provider_id_(GetNextProviderId()),
  40       context_(new ServiceWorkerProviderContext(provider_id_)) {
  41   if (!ChildThread::current())
  42     return;  // May be null in some tests.
  43   ChildThread::current()->Send(
  44       new ServiceWorkerHostMsg_ProviderCreated(provider_id_, render_frame_id));
  45 }
  46
  47 ServiceWorkerNetworkProvider::~ServiceWorkerNetworkProvider() {
  48   if (!ChildThread::current())
  49     return;  // May be null in some tests.
  50   ChildThread::current()->Send(
  51       new ServiceWorkerHostMsg_ProviderDestroyed(provider_id_));
  52 }
  53
  54 void ServiceWorkerNetworkProvider::SetServiceWorkerVersionId(
  55     int64 version_id) {
  56   if (!ChildThread::current())
  57     return;  // May be null in some tests.
  58   ChildThread::current()->Send(
  59       new ServiceWorkerHostMsg_SetVersionId(provider_id_, version_id));
  60 }
  61
  62 }  // namespace content