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1 // Copyright 2017 The Chromium Authors. All rights reserved. | 1 // Copyright 2017 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 BASE_MEMORY_SHARED_MEMORY_TRACKER_H_ | 5 #ifndef BASE_MEMORY_SHARED_MEMORY_TRACKER_H_ |
6 #define BASE_MEMORY_SHARED_MEMORY_TRACKER_H_ | 6 #define BASE_MEMORY_SHARED_MEMORY_TRACKER_H_ |
7 | 7 |
8 #include <unordered_map> | 8 #include <unordered_map> |
9 | 9 |
10 #include "base/memory/shared_memory.h" | 10 #include "base/memory/shared_memory.h" |
(...skipping 13 matching lines...) Expand all Loading... | |
24 // Returns a singleton instance. | 24 // Returns a singleton instance. |
25 static SharedMemoryTracker* GetInstance(); | 25 static SharedMemoryTracker* GetInstance(); |
26 | 26 |
27 // Records shared memory usage on mapping. | 27 // Records shared memory usage on mapping. |
28 void IncrementMemoryUsage(const SharedMemory& shared_memory); | 28 void IncrementMemoryUsage(const SharedMemory& shared_memory); |
29 | 29 |
30 // Records shared memory usage on unmapping. | 30 // Records shared memory usage on unmapping. |
31 void DecrementMemoryUsage(const SharedMemory& shared_memory); | 31 void DecrementMemoryUsage(const SharedMemory& shared_memory); |
32 | 32 |
33 private: | 33 private: |
34 struct Usage { | |
35 Usage(); | |
36 Usage(const Usage& rhs); | |
37 ~Usage(); | |
38 SharedMemory::UniqueId unique_id; | |
39 size_t size; | |
40 }; | |
41 | |
42 SharedMemoryTracker(); | 34 SharedMemoryTracker(); |
43 ~SharedMemoryTracker() override; | 35 ~SharedMemoryTracker() override; |
44 | 36 |
45 // base::trace_event::MemoryDumpProvider implementation. | 37 // base::trace_event::MemoryDumpProvider implementation. |
46 bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args, | 38 bool OnMemoryDump(const base::trace_event::MemoryDumpArgs& args, |
47 base::trace_event::ProcessMemoryDump* pmd) override; | 39 base::trace_event::ProcessMemoryDump* pmd) override; |
48 | 40 |
49 // Used to lock when |usages_| is modified or read. | 41 // Used to lock when |usages_| is modified or read. |
50 Lock usages_lock_; | 42 Lock usages_lock_; |
51 std::unordered_map<const SharedMemory*, Usage> usages_; | 43 std::unordered_map<const SharedMemory*, std::size_t> usages_; |
danakj
2017/05/09 14:54:18
just size_t, no std::
hajimehoshi
2017/05/10 05:55:22
Done.
| |
52 | 44 |
53 DISALLOW_COPY_AND_ASSIGN(SharedMemoryTracker); | 45 DISALLOW_COPY_AND_ASSIGN(SharedMemoryTracker); |
54 }; | 46 }; |
55 | 47 |
56 } // namespace base | 48 } // namespace base |
57 | 49 |
58 #endif // BASE_MEMORY_SHARED_MEMORY_TRACKER_H_ | 50 #endif // BASE_MEMORY_SHARED_MEMORY_TRACKER_H_ |
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