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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 |
| 9 |
8 #include "base/allocator/allocator_extension_thunks.h" | 10 #include "base/allocator/allocator_extension_thunks.h" |
9 #include "base/base_export.h" | 11 #include "base/base_export.h" |
10 #include "build/build_config.h" | 12 #include "build/build_config.h" |
11 | 13 |
12 namespace base { | 14 namespace base { |
13 namespace allocator { | 15 namespace allocator { |
14 | 16 |
| 17 // Request the allocator to report value of its internal state variable. |
| 18 // |
| 19 // |name| name of the variable |
| 20 // |value| pointer to the returned value, must be not NULL. |
| 21 // Returns true if the value has been returned, false if a variable with such |
| 22 // name does not exist. |
| 23 BASE_EXPORT bool GetProperty(const char* name, size_t* value); |
| 24 |
15 // Request that the allocator print a human-readable description of the current | 25 // Request that the allocator print a human-readable description of the current |
16 // state of the allocator into a null-terminated string in the memory segment | 26 // state of the allocator into a null-terminated string in the memory segment |
17 // buffer[0,buffer_length-1]. | 27 // buffer[0,buffer_length-1]. |
18 // | 28 // |
19 // |buffer| must point to a valid piece of memory | 29 // |buffer| must point to a valid piece of memory |
20 // |buffer_length| must be > 0. | 30 // |buffer_length| must be > 0. |
21 BASE_EXPORT void GetStats(char* buffer, int buffer_length); | 31 BASE_EXPORT void GetStats(char* buffer, int buffer_length); |
22 | 32 |
23 // Request that the allocator release any free memory it knows about to the | 33 // Request that the allocator release any free memory it knows about to the |
24 // system. | 34 // system. |
25 BASE_EXPORT void ReleaseFreeMemory(); | 35 BASE_EXPORT void ReleaseFreeMemory(); |
26 | 36 |
27 | 37 |
28 // These settings allow specifying a callback used to implement the allocator | 38 // These settings allow specifying a callback used to implement the allocator |
29 // extension functions. These are optional, but if set they must only be set | 39 // extension functions. These are optional, but if set they must only be set |
30 // once. These will typically called in an allocator-specific initialization | 40 // once. These will typically called in an allocator-specific initialization |
31 // routine. | 41 // routine. |
32 // | 42 // |
33 // No threading promises are made. The caller is responsible for making sure | 43 // No threading promises are made. The caller is responsible for making sure |
34 // these pointers are set before any other threads attempt to call the above | 44 // these pointers are set before any other threads attempt to call the above |
35 // functions. | 45 // functions. |
| 46 BASE_EXPORT void SetGetPropertyFunction( |
| 47 thunks::GetPropertyFunction* get_property_function); |
| 48 |
36 BASE_EXPORT void SetGetStatsFunction( | 49 BASE_EXPORT void SetGetStatsFunction( |
37 thunks::GetStatsFunction* get_stats_function); | 50 thunks::GetStatsFunction* get_stats_function); |
38 | 51 |
39 BASE_EXPORT void SetReleaseFreeMemoryFunction( | 52 BASE_EXPORT void SetReleaseFreeMemoryFunction( |
40 thunks::ReleaseFreeMemoryFunction* release_free_memory_function); | 53 thunks::ReleaseFreeMemoryFunction* release_free_memory_function); |
| 54 |
41 } // namespace allocator | 55 } // namespace allocator |
42 } // namespace base | 56 } // namespace base |
43 | 57 |
44 #endif | 58 #endif |
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