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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 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_STREAMS_STREAM_REGISTRY_H_ | 5 #ifndef CONTENT_BROWSER_STREAMS_STREAM_REGISTRY_H_ |
6 #define CONTENT_BROWSER_STREAMS_STREAM_REGISTRY_H_ | 6 #define CONTENT_BROWSER_STREAMS_STREAM_REGISTRY_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 | 9 |
10 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
(...skipping 14 matching lines...) Expand all Loading... | |
25 | 25 |
26 // Registers a stream, and sets its URL. | 26 // Registers a stream, and sets its URL. |
27 void RegisterStream(scoped_refptr<Stream> stream); | 27 void RegisterStream(scoped_refptr<Stream> stream); |
28 | 28 |
29 // Clones a stream. Returns true on success, or false if |src_url| doesn't | 29 // Clones a stream. Returns true on success, or false if |src_url| doesn't |
30 // exist. | 30 // exist. |
31 bool CloneStream(const GURL& url, const GURL& src_url); | 31 bool CloneStream(const GURL& url, const GURL& src_url); |
32 | 32 |
33 void UnregisterStream(const GURL& url); | 33 void UnregisterStream(const GURL& url); |
34 | 34 |
35 // Called by Stream instances to request increase of memory usage. If the | |
36 // total memory usage for this registry is going to exceed the limit, | |
37 // subtracts |old_size| from |total_memory_usage_|, removes the stream from | |
38 // |streams_| and returns false.. Otherwise, updates | |
39 // |total_memory_usage_| and returns true. | |
40 bool CanIncreaseMemoryUsage( | |
41 const GURL& url, size_t last_size, size_t new_size); | |
42 | |
35 // Gets the stream associated with |url|. Returns NULL if there is no such | 43 // Gets the stream associated with |url|. Returns NULL if there is no such |
36 // stream. | 44 // stream. |
37 scoped_refptr<Stream> GetStream(const GURL& url); | 45 scoped_refptr<Stream> GetStream(const GURL& url); |
38 | 46 |
47 // Only for testing. | |
48 void set_max_memory_usage(uint64 size) { | |
49 max_memory_usage_ = size; | |
50 } | |
51 | |
39 private: | 52 private: |
40 typedef std::map<GURL, scoped_refptr<Stream> > StreamMap; | 53 typedef std::map<GURL, scoped_refptr<Stream> > StreamMap; |
41 | 54 |
42 StreamMap streams_; | 55 StreamMap streams_; |
43 | 56 |
57 size_t total_memory_usage_; | |
58 | |
59 // Maximum amount of memory allowed to use for Stream instances registered | |
60 // with this registry. | |
61 uint64 max_memory_usage_; | |
kinuko
2013/08/14 09:32:23
Any reason you use different types for total and m
tyoshino (SeeGerritForStatus)
2013/08/15 04:15:33
Changed to use size_t
| |
62 | |
44 DISALLOW_COPY_AND_ASSIGN(StreamRegistry); | 63 DISALLOW_COPY_AND_ASSIGN(StreamRegistry); |
45 }; | 64 }; |
46 | 65 |
47 } // namespace content | 66 } // namespace content |
48 | 67 |
49 #endif // CONTENT_BROWSER_STREAMS_STREAM_REGISTRY_H_ | 68 #endif // CONTENT_BROWSER_STREAMS_STREAM_REGISTRY_H_ |
50 | |
51 | |
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