| Index: content/browser/loader/resource_scheduler.h
|
| ===================================================================
|
| --- content/browser/loader/resource_scheduler.h (revision 183842)
|
| +++ content/browser/loader/resource_scheduler.h (working copy)
|
| @@ -1,113 +0,0 @@
|
| -// 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 CONTENT_BROWSER_LOADER_RESOURCE_SCHEDULER_H_
|
| -#define CONTENT_BROWSER_LOADER_RESOURCE_SCHEDULER_H_
|
| -
|
| -#include <map>
|
| -#include <set>
|
| -#include <vector>
|
| -
|
| -#include "base/basictypes.h"
|
| -#include "base/compiler_specific.h"
|
| -#include "base/containers/mru_cache.h"
|
| -#include "base/memory/linked_ptr.h"
|
| -#include "base/memory/scoped_ptr.h"
|
| -#include "base/threading/non_thread_safe.h"
|
| -#include "content/common/content_export.h"
|
| -#include "content/public/browser/global_request_id.h"
|
| -
|
| -namespace net {
|
| -class URLRequest;
|
| -}
|
| -
|
| -namespace content {
|
| -class ResourceThrottle;
|
| -
|
| -// There is one ResourceScheduler. All renderer-initiated HTTP requests are
|
| -// expected to pass through it.
|
| -//
|
| -// There are two types of input to the scheduler:
|
| -// 1. Requests to start, cancel, or finish fetching a resource.
|
| -// 2. Notifications for renderer events, such as navigation and painting.
|
| -//
|
| -// The ResourceScheduler tracks many Clients, which should correlate with tabs.
|
| -// A client is uniquely identified by its child_id and route_id.
|
| -//
|
| -// Each Client may have many Requests in flight. Requests are uniquely
|
| -// identified within a Client by its ScheduledResourceRequest.
|
| -//
|
| -// Users should call ScheduleRequest() to notify this ResourceScheduler of a
|
| -// new request. The returned ResourceThrottle should be destroyed when the load
|
| -// finishes or is canceled.
|
| -//
|
| -// The scheduler may defer issuing the request via the ResourceThrottle
|
| -// interface or it may alter the request's priority by calling set_priority() on
|
| -// the URLRequest.
|
| -//
|
| -// The scheduler only tracks the most recently used Clients. If a tab hasn't
|
| -// navigated or fetched a resource for some time, its state may be forgotten
|
| -// until its next navigation. In such situations, no request throttling occurs.
|
| -class CONTENT_EXPORT ResourceScheduler : public base::NonThreadSafe {
|
| - public:
|
| - ResourceScheduler();
|
| - ~ResourceScheduler();
|
| -
|
| - // Requests that this ResourceScheduler schedule, and eventually loads, the
|
| - // specified |url_request|. Caller should delete the returned ResourceThrottle
|
| - // when the load completes or is canceled.
|
| - scoped_ptr<ResourceThrottle> ScheduleRequest(
|
| - int child_id, int route_id, net::URLRequest* url_request);
|
| -
|
| - // Called when a client navigates to a new main document.
|
| - void OnNavigate(int child_id, int route_id);
|
| -
|
| - // Called when the client has parsed the <body> element. This is a signal that
|
| - // resource loads won't interfere with first paint.
|
| - void OnWillInsertBody(int child_id, int route_id);
|
| -
|
| - private:
|
| - class ScheduledResourceRequest;
|
| - friend class ScheduledResourceRequest;
|
| - struct Client;
|
| -
|
| - typedef int64 ClientId;
|
| - typedef base::OwningMRUCache<ClientId, Client*> ClientMap;
|
| - typedef std::vector<ScheduledResourceRequest*> RequestQueue;
|
| - typedef std::set<ScheduledResourceRequest*> RequestSet;
|
| -
|
| - struct Client {
|
| - Client(ResourceScheduler* scheduler);
|
| - ~Client();
|
| -
|
| - bool has_body;
|
| - RequestQueue pending_requests;
|
| - RequestSet in_flight_requests;
|
| -
|
| - private:
|
| - ResourceScheduler* scheduler_;
|
| - };
|
| -
|
| - // Called when a ScheduledResourceRequest is destroyed.
|
| - void RemoveRequest(ScheduledResourceRequest* request);
|
| -
|
| - // Unthrottles the |request| and adds it to |client|.
|
| - void StartRequest(ScheduledResourceRequest* request, Client* client);
|
| -
|
| - // Calls StartRequest on all pending requests for |client|.
|
| - void LoadPendingRequests(Client* client);
|
| -
|
| - // Called when a Client is evicted from the MRUCache.
|
| - void RemoveClient(Client* client);
|
| -
|
| - // Returns the client ID for the given |child_id| and |route_id| combo.
|
| - ClientId MakeClientId(int child_id, int route_id);
|
| -
|
| - ClientMap client_map_;
|
| - RequestSet unowned_requests_;
|
| -};
|
| -
|
| -} // namespace content
|
| -
|
| -#endif // CONTENT_BROWSER_LOADER_RESOURCE_SCHEDULER_H_
|
|
|
Chromium Code Reviews
