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
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
|
// 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.
// See http://wiki.corp.google.com/twiki/bin/view/Main/ChromeMultiProcessResourceLoading
#ifndef CHROME_COMMON_RESOURCE_DISPATCHER_H__
#define CHROME_COMMON_RESOURCE_DISPATCHER_H__
#include <windows.h>
#include <hash_map>
#include "base/task.h"
#include "chrome/common/ipc_channel.h"
#include "chrome/common/render_messages.h"
#include "webkit/glue/resource_loader_bridge.h"
// Uncomment this to disable loading resources via the parent process. This
// may be useful for debugging purposes.
//#define USING_SIMPLE_RESOURCE_LOADER_BRIDGE
// This class serves as a communication interface between the
// ResourceDispatcherHost in the browser process and the ResourceLoaderBridge in
// the child process. It can be used from either the renderer or plugin
// processes.
class ResourceDispatcher : public base::RefCounted<ResourceDispatcher> {
public:
ResourceDispatcher(IPC::Message::Sender* sender);
~ResourceDispatcher();
// Called to possibly handle the incoming IPC message. Returns true if
// handled, else false.
bool OnMessageReceived(const IPC::Message& message);
// creates a ResourceLoaderBridge for this type of dispatcher, this is so
// this can be tested regardless of the ResourceLoaderBridge::Create
// implementation.
webkit_glue::ResourceLoaderBridge* CreateBridge(const std::string& method,
const GURL& url,
const GURL& policy_url,
const GURL& referrer,
const std::string& headers,
int load_flags,
int origin_pid,
ResourceType::Type resource_type,
bool mixed_content,
uint32 request_context /* used for plugin->browser requests */);
// Adds a request from the pending_requests_ list, returning the new
// requests' ID
int AddPendingRequest(webkit_glue::ResourceLoaderBridge::Peer* callback,
ResourceType::Type resource_type,
bool mixed_content);
// Removes a request from the pending_requests_ list, returning true if the
// request was found and removed.
bool RemovePendingRequest(int request_id);
IPC::Message::Sender* message_sender() const {
return message_sender_;
}
// Toggles the is_deferred attribute for the specified request.
void SetDefersLoading(int request_id, bool value);
// We can no longer use message sender
void ClearMessageSender() {
message_sender_ = NULL;
}
private:
friend class ResourceDispatcherTest;
typedef std::deque<IPC::Message*> MessageQueue;
struct PendingRequestInfo {
PendingRequestInfo() { }
PendingRequestInfo(webkit_glue::ResourceLoaderBridge::Peer* peer,
ResourceType::Type resource_type,
bool mixed_content)
: peer(peer),
resource_type(resource_type),
filter_policy(FilterPolicy::DONT_FILTER),
mixed_content(mixed_content),
is_deferred(false) {
}
~PendingRequestInfo() { }
webkit_glue::ResourceLoaderBridge::Peer* peer;
ResourceType::Type resource_type;
FilterPolicy::Type filter_policy;
MessageQueue deferred_message_queue;
bool mixed_content;
bool is_deferred;
};
typedef stdext::hash_map<int,PendingRequestInfo> PendingRequestList;
// Message response handlers, called by the message handler for this process.
void OnUploadProgress(int request_id, int64 position, int64 size);
void OnReceivedResponse(int request_id, const ViewMsg_Resource_ResponseHead&);
void OnReceivedRedirect(int request_id, const GURL& new_url);
void OnReceivedData(int request_id, SharedMemoryHandle data, int data_len);
void OnRequestComplete(int request_id, const URLRequestStatus& status);
// Dispatch the message to one of the message response handlers.
void DispatchMessage(const IPC::Message& message);
// Dispatch any deferred messages for the given request, provided it is not
// again in the deferred state.
void FlushDeferredMessages(int request_id);
IPC::Message::Sender* message_sender_;
// All pending requests issued to the host
PendingRequestList pending_requests_;
ScopedRunnableMethodFactory<ResourceDispatcher> method_factory_;
DISALLOW_EVIL_CONSTRUCTORS(ResourceDispatcher);
};
#endif // CHROME_COMMON_RESOURCE_DISPATCHER_H__
|
