1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
// 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__
|
