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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 <type_traits> // for std::add_pointer | |
11 | |
10 #include "base/base_export.h" | 12 #include "base/base_export.h" |
11 #include "build/build_config.h" | 13 #include "build/build_config.h" |
12 | 14 |
13 namespace base { | 15 namespace base { |
14 namespace allocator { | 16 namespace allocator { |
15 | 17 |
18 // Callback types for alloc and free. | |
19 using AllocHookFunc = std::add_pointer<void(const void*, size_t)>::type; | |
Primiano Tucci (use gerrit)
2016/03/02 22:16:11
I think there is an unresolved comment here, maybe
Simon Que
2016/03/02 22:35:25
Done.
| |
20 using FreeHookFunc = std::add_pointer<void(const void*)>::type; | |
21 | |
16 // Request that the allocator release any free memory it knows about to the | 22 // Request that the allocator release any free memory it knows about to the |
17 // system. | 23 // system. |
18 BASE_EXPORT void ReleaseFreeMemory(); | 24 BASE_EXPORT void ReleaseFreeMemory(); |
19 | 25 |
20 // Get the named property's |value|. Returns true if the property is known. | 26 // Get the named property's |value|. Returns true if the property is known. |
21 // Returns false if the property is not a valid property name for the current | 27 // Returns false if the property is not a valid property name for the current |
22 // allocator implementation. | 28 // allocator implementation. |
23 // |name| or |value| cannot be NULL | 29 // |name| or |value| cannot be NULL |
24 BASE_EXPORT bool GetNumericProperty(const char* name, size_t* value); | 30 BASE_EXPORT bool GetNumericProperty(const char* name, size_t* value); |
25 | 31 |
26 BASE_EXPORT bool IsHeapProfilerRunning(); | 32 BASE_EXPORT bool IsHeapProfilerRunning(); |
27 | 33 |
34 // Register callbacks for alloc and free. Can only store one callback at a time | |
35 // for each of alloc and free. | |
36 BASE_EXPORT void SetHooks(AllocHookFunc alloc_hook, FreeHookFunc free_hook); | |
37 | |
38 // Attempts to unwind the call stack from the current location where this | |
39 // function is being called from. Must be called from a hook function registered | |
40 // by calling SetSingle{Alloc,Free}Hook, directly or indirectly. | |
41 // | |
42 // Arguments: | |
43 // stack: pointer to a pre-allocated array of void*'s. | |
44 // max_stack_size: indicates the size of the array in |stack|. | |
45 // skip_count: Indicates how many initial call stack levels to skip before | |
46 // storing the caller of alloc/free. This value might not be | |
47 // used, depending on the specific implementation. | |
48 // | |
49 // Returns the number of call stack frames stored in |stack|, or 0 if no call | |
50 // stack information is available. | |
51 BASE_EXPORT int GetCallStack(void** stack, int max_stack_size, int skip_count); | |
Primiano Tucci (use gerrit)
2016/03/02 22:16:11
There is another unresolved comment here:
It looks
Simon Que
2016/03/02 22:35:25
Done.
| |
52 | |
28 } // namespace allocator | 53 } // namespace allocator |
29 } // namespace base | 54 } // namespace base |
30 | 55 |
31 #endif // BASE_ALLOCATOR_ALLOCATOR_EXTENSION_H_ | 56 #endif // BASE_ALLOCATOR_ALLOCATOR_EXTENSION_H_ |
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