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Side by Side Diff: content/browser/download/download_buffer.h

Issue 8381024: more content exports. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: don't link installer_unittests, setup against content Created 9 years, 1 month ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_BUFFER_H_ 5 #ifndef CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_BUFFER_H_
6 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_BUFFER_H_ 6 #define CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_BUFFER_H_
7 #pragma once 7 #pragma once
8 8
9 #include <vector> 9 #include <vector>
10 10
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21 21
22 typedef std::pair<scoped_refptr<net::IOBuffer>, size_t> ContentElement; 22 typedef std::pair<scoped_refptr<net::IOBuffer>, size_t> ContentElement;
23 typedef std::vector<ContentElement> ContentVector; 23 typedef std::vector<ContentElement> ContentVector;
24 24
25 // Helper function for ContentVector. 25 // Helper function for ContentVector.
26 // Assembles the data from |contents| and returns it in an |IOBuffer|. 26 // Assembles the data from |contents| and returns it in an |IOBuffer|.
27 // The number of bytes in the |IOBuffer| is returned in |*num_bytes| 27 // The number of bytes in the |IOBuffer| is returned in |*num_bytes|
28 // (if |num_bytes| is not NULL). 28 // (if |num_bytes| is not NULL).
29 // If |contents| is empty, returns NULL as an |IOBuffer| is not allowed 29 // If |contents| is empty, returns NULL as an |IOBuffer| is not allowed
30 // to have 0 bytes. 30 // to have 0 bytes.
31 net::IOBuffer* AssembleData(const ContentVector& contents, size_t* num_bytes); 31 CONTENT_EXPORT net::IOBuffer* AssembleData(const ContentVector& contents,
32 size_t* num_bytes);
32 33
33 // |DownloadBuffer| is a thread-safe wrapper around |ContentVector|. 34 // |DownloadBuffer| is a thread-safe wrapper around |ContentVector|.
34 // 35 //
35 // It is created and populated on the IO thread, and passed to the 36 // It is created and populated on the IO thread, and passed to the
36 // FILE thread for writing. In order to avoid flooding the FILE thread with 37 // FILE thread for writing. In order to avoid flooding the FILE thread with
37 // too many small write messages, each write is appended to the 38 // too many small write messages, each write is appended to the
38 // |DownloadBuffer| while waiting for the task to run on the FILE 39 // |DownloadBuffer| while waiting for the task to run on the FILE
39 // thread. Access to the write buffers is synchronized via the lock. 40 // thread. Access to the write buffers is synchronized via the lock.
40 class CONTENT_EXPORT DownloadBuffer : 41 class CONTENT_EXPORT DownloadBuffer :
41 public base::RefCountedThreadSafe<DownloadBuffer> { 42 public base::RefCountedThreadSafe<DownloadBuffer> {
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61 62
62 mutable base::Lock lock_; 63 mutable base::Lock lock_;
63 ContentVector contents_; 64 ContentVector contents_;
64 65
65 DISALLOW_COPY_AND_ASSIGN(DownloadBuffer); 66 DISALLOW_COPY_AND_ASSIGN(DownloadBuffer);
66 }; 67 };
67 68
68 } // namespace content 69 } // namespace content
69 70
70 #endif // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_BUFFER_H_ 71 #endif // CONTENT_BROWSER_DOWNLOAD_DOWNLOAD_BUFFER_H_
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