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
|
// Copyright (c) 2011 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_RENDERER_HOST_ASYNC_RESOURCE_HANDLER_H_
#define CONTENT_BROWSER_RENDERER_HOST_ASYNC_RESOURCE_HANDLER_H_
#pragma once
#include <string>
#include "content/browser/renderer_host/resource_handler.h"
class HostZoomMap;
class ResourceDispatcherHost;
class ResourceMessageFilter;
class SharedIOBuffer;
// Used to complete an asynchronous resource request in response to resource
// load events from the resource dispatcher host.
class AsyncResourceHandler : public ResourceHandler {
public:
AsyncResourceHandler(ResourceMessageFilter* filter,
int routing_id,
const GURL& url,
ResourceDispatcherHost* resource_dispatcher_host);
// ResourceHandler implementation:
virtual bool OnUploadProgress(int request_id,
uint64 position,
uint64 size) OVERRIDE;
virtual bool OnRequestRedirected(int request_id,
const GURL& new_url,
content::ResourceResponse* response,
bool* defer) OVERRIDE;
virtual bool OnResponseStarted(int request_id,
content::ResourceResponse* response) OVERRIDE;
virtual bool OnWillStart(int request_id,
const GURL& url,
bool* defer) OVERRIDE;
virtual bool OnWillRead(int request_id,
net::IOBuffer** buf,
int* buf_size,
int min_size) OVERRIDE;
virtual bool OnReadCompleted(int request_id,
int* bytes_read) OVERRIDE;
virtual bool OnResponseCompleted(int request_id,
const net::URLRequestStatus& status,
const std::string& security_info) OVERRIDE;
virtual void OnRequestClosed() OVERRIDE;
virtual void OnDataDownloaded(int request_id,
int bytes_downloaded) OVERRIDE;
static void GlobalCleanup();
private:
virtual ~AsyncResourceHandler();
scoped_refptr<SharedIOBuffer> read_buffer_;
ResourceMessageFilter* filter_;
int routing_id_;
HostZoomMap* host_zoom_map_;
ResourceDispatcherHost* rdh_;
// |next_buffer_size_| is the size of the buffer to be allocated on the next
// OnWillRead() call. We exponentially grow the size of the buffer allocated
// when our owner fills our buffers. On the first OnWillRead() call, we
// allocate a buffer of 32k and double it in OnReadCompleted() if the buffer
// was filled, up to a maximum size of 512k.
int next_buffer_size_;
DISALLOW_COPY_AND_ASSIGN(AsyncResourceHandler);
};
#endif // CONTENT_BROWSER_RENDERER_HOST_ASYNC_RESOURCE_HANDLER_H_
|
