Add chrome to the repository.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@15 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 81 insertions, 0 deletions

diff --git a/chrome/browser/cross_site_request_manager.h b/chrome/browser/cross_site_request_manager.h
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+++ b/chrome/browser/cross_site_request_manager.h
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+// 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 <set>
+#include <utility>
+
+#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<CrossSiteRequestManager>;
+  typedef std::set<std::pair<int, int> > RenderViewSet;
+
+  // Obtain an instance of CrossSiteRequestManager via
+  // Singleton<CrossSiteRequestManager>().
+  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__