// Copyright 2008, Google Inc. // All rights reserved. // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following disclaimer // in the documentation and/or other materials provided with the // distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived from // this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #ifndef CHROME_BROWSER_CROSS_SITE_REQUEST_MANAGER_H__ #define CHROME_BROWSER_CROSS_SITE_REQUEST_MANAGER_H__ #include #include #include "base/basictypes.h" #include "base/lock.h" #include "base/singleton.h" // CrossSiteRequestManager is used to handle bookkeeping for cross-site // requests and responses between the UI and IO threads. Such requests involve // a transition from one RenderViewHost to another within WebContents, and // involve coordination with ResourceDispatcherHost. // // CrossSiteRequestManager is a singleton that may be used on any thread. // class CrossSiteRequestManager { public: // Returns whether the RenderViewHost specified by the given IDs currently // has a pending cross-site request. If so, we will have to delay the // response until the previous RenderViewHost runs its onunload handler. // Called by ResourceDispatcherHost on the IO thread. bool HasPendingCrossSiteRequest(int renderer_id, int render_view_id); // Sets whether the RenderViewHost specified by the given IDs currently has a // pending cross-site request. Called by RenderViewHost on the UI thread. void SetHasPendingCrossSiteRequest(int renderer_id, int render_view_id, bool has_pending); private: friend DefaultSingletonTraits; typedef std::set > RenderViewSet; // Obtain an instance of CrossSiteRequestManager via // Singleton(). CrossSiteRequestManager() {} // You must acquire this lock before reading or writing any members of this // class. You must not block while holding this lock. Lock lock_; // Set of (render_process_host_id, render_view_id) pairs of all // RenderViewHosts that have pending cross-site requests. Used to pass // information about the RenderViewHosts between the UI and IO threads. RenderViewSet pending_cross_site_views_; DISALLOW_EVIL_CONSTRUCTORS(CrossSiteRequestManager); }; #endif // CHROME_BROWSER_CROSS_SITE_REQUEST_MANAGER_H__