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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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_ALLOCATOR_ALLOCATOR_EXTENSION_H_ | 5 #ifndef BASE_ALLOCATOR_ALLOCATOR_EXTENSION_H_ |
6 #define BASE_ALLOCATOR_ALLOCATOR_EXTENSION_H_ | 6 #define BASE_ALLOCATOR_ALLOCATOR_EXTENSION_H_ |
7 | 7 |
8 #include <stddef.h> // for size_t | 8 #include <stddef.h> // for size_t |
9 | 9 |
10 #include "base/allocator/allocator_extension_thunks.h" | 10 #include "base/allocator/allocator_extension_thunks.h" |
11 #include "base/base_export.h" | 11 #include "base/base_export.h" |
12 #include "build/build_config.h" | 12 #include "build/build_config.h" |
13 | 13 |
14 namespace base { | 14 namespace base { |
15 namespace allocator { | 15 namespace allocator { |
16 | 16 |
17 // Request the allocator to report value of its waste memory size. | |
18 // Waste size corresponds to memory that has been allocated from the OS but | |
19 // not passed up to the application. It e.g. includes memory retained by free | |
20 // lists, internal data, chunks padding, etc. | |
21 // | |
22 // |size| pointer to the returned value, must be not NULL. | |
23 // Returns true if the value has been returned, false otherwise. | |
24 BASE_EXPORT bool GetAllocatorWasteSize(size_t* size); | |
25 | |
26 // Request that the allocator print a human-readable description of the current | 17 // Request that the allocator print a human-readable description of the current |
27 // state of the allocator into a null-terminated string in the memory segment | 18 // state of the allocator into a null-terminated string in the memory segment |
28 // buffer[0,buffer_length-1]. | 19 // buffer[0,buffer_length-1]. |
29 // | 20 // |
30 // |buffer| must point to a valid piece of memory | 21 // |buffer| must point to a valid piece of memory |
31 // |buffer_length| must be > 0. | 22 // |buffer_length| must be > 0. |
32 BASE_EXPORT void GetStats(char* buffer, int buffer_length); | 23 BASE_EXPORT void GetStats(char* buffer, int buffer_length); |
33 | 24 |
34 // Request that the allocator release any free memory it knows about to the | 25 // Request that the allocator release any free memory it knows about to the |
35 // system. | 26 // system. |
36 BASE_EXPORT void ReleaseFreeMemory(); | 27 BASE_EXPORT void ReleaseFreeMemory(); |
37 | 28 |
38 | 29 |
39 // These settings allow specifying a callback used to implement the allocator | 30 // These settings allow specifying a callback used to implement the allocator |
40 // extension functions. These are optional, but if set they must only be set | 31 // extension functions. These are optional, but if set they must only be set |
41 // once. These will typically called in an allocator-specific initialization | 32 // once. These will typically called in an allocator-specific initialization |
42 // routine. | 33 // routine. |
43 // | 34 // |
44 // No threading promises are made. The caller is responsible for making sure | 35 // No threading promises are made. The caller is responsible for making sure |
45 // these pointers are set before any other threads attempt to call the above | 36 // these pointers are set before any other threads attempt to call the above |
46 // functions. | 37 // functions. |
47 BASE_EXPORT void SetGetAllocatorWasteSizeFunction( | |
48 thunks::GetAllocatorWasteSizeFunction get_allocator_waste_size_function); | |
49 | 38 |
50 BASE_EXPORT void SetGetStatsFunction( | 39 BASE_EXPORT void SetGetStatsFunction( |
51 thunks::GetStatsFunction get_stats_function); | 40 thunks::GetStatsFunction get_stats_function); |
52 | 41 |
53 BASE_EXPORT void SetReleaseFreeMemoryFunction( | 42 BASE_EXPORT void SetReleaseFreeMemoryFunction( |
54 thunks::ReleaseFreeMemoryFunction release_free_memory_function); | 43 thunks::ReleaseFreeMemoryFunction release_free_memory_function); |
55 | 44 |
56 BASE_EXPORT void SetGetNumericPropertyFunction( | 45 BASE_EXPORT void SetGetNumericPropertyFunction( |
57 thunks::GetNumericPropertyFunction get_numeric_property_function); | 46 thunks::GetNumericPropertyFunction get_numeric_property_function); |
58 | 47 |
59 } // namespace allocator | 48 } // namespace allocator |
60 } // namespace base | 49 } // namespace base |
61 | 50 |
62 #endif // BASE_ALLOCATOR_ALLOCATOR_EXTENSION_H_ | 51 #endif // BASE_ALLOCATOR_ALLOCATOR_EXTENSION_H_ |
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