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
|
// Copyright (c) 2006-2008 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 CHROME_BROWSER_RENDERER_HOST_ASYNC_RESOURCE_HANDLER_H_
#define CHROME_BROWSER_RENDERER_HOST_ASYNC_RESOURCE_HANDLER_H_
#pragma once
#include <string>
#include "chrome/browser/renderer_host/resource_handler.h"
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);
virtual bool OnRequestRedirected(int request_id, const GURL& new_url,
ResourceResponse* response, bool* defer);
virtual bool OnResponseStarted(int request_id, ResourceResponse* response);
virtual bool OnWillStart(int request_id, const GURL& url, bool* defer);
virtual bool OnWillRead(int request_id, net::IOBuffer** buf, int* buf_size,
int min_size);
virtual bool OnReadCompleted(int request_id, int* bytes_read);
virtual bool OnResponseCompleted(int request_id,
const URLRequestStatus& status,
const std::string& security_info);
virtual void OnRequestClosed();
virtual void OnDataDownloaded(int request_id, int bytes_downloaded);
static void GlobalCleanup();
private:
virtual ~AsyncResourceHandler();
scoped_refptr<SharedIOBuffer> read_buffer_;
ResourceMessageFilter* filter_;
int routing_id_;
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 // CHROME_BROWSER_RENDERER_HOST_ASYNC_RESOURCE_HANDLER_H_
|
