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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 BASE_PROCESS_MEMORY_H_ | 5 #ifndef BASE_PROCESS_MEMORY_H_ |
6 #define BASE_PROCESS_MEMORY_H_ | 6 #define BASE_PROCESS_MEMORY_H_ |
7 | 7 |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 | 9 |
10 #include "base/base_export.h" | 10 #include "base/base_export.h" |
11 #include "base/process/process_handle.h" | 11 #include "base/process/process_handle.h" |
12 #include "build/build_config.h" | 12 #include "build/build_config.h" |
13 | 13 |
14 #if defined(OS_WIN) | |
15 #include <windows.h> | |
16 #endif | |
17 | |
18 #ifdef PVALLOC_AVAILABLE | 14 #ifdef PVALLOC_AVAILABLE |
19 // Build config explicitly tells us whether or not pvalloc is available. | 15 // Build config explicitly tells us whether or not pvalloc is available. |
20 #elif defined(LIBC_GLIBC) && !defined(USE_TCMALLOC) | 16 #elif defined(LIBC_GLIBC) && !defined(USE_TCMALLOC) |
21 #define PVALLOC_AVAILABLE 1 | 17 #define PVALLOC_AVAILABLE 1 |
22 #else | 18 #else |
23 #define PVALLOC_AVAILABLE 0 | 19 #define PVALLOC_AVAILABLE 0 |
24 #endif | 20 #endif |
25 | 21 |
26 namespace base { | 22 namespace base { |
27 | 23 |
28 // Enables 'terminate on heap corruption' flag. Helps protect against heap | 24 // Enables 'terminate on heap corruption' flag. Helps protect against heap |
29 // overflow. Has no effect if the OS doesn't provide the necessary facility. | 25 // overflow. Has no effect if the OS doesn't provide the necessary facility. |
30 BASE_EXPORT void EnableTerminationOnHeapCorruption(); | 26 BASE_EXPORT void EnableTerminationOnHeapCorruption(); |
31 | 27 |
32 // Turns on process termination if memory runs out. | 28 // Turns on process termination if memory runs out. |
33 BASE_EXPORT void EnableTerminationOnOutOfMemory(); | 29 BASE_EXPORT void EnableTerminationOnOutOfMemory(); |
34 | 30 |
35 // Terminates process. Should be called only for out of memory errors. | 31 // Terminates process. Should be called only for out of memory errors. |
36 // Crash reporting classifies such crashes as OOM. | 32 // Crash reporting classifies such crashes as OOM. |
37 BASE_EXPORT void TerminateBecauseOutOfMemory(size_t size); | 33 BASE_EXPORT void TerminateBecauseOutOfMemory(size_t size); |
38 | 34 |
39 #if defined(OS_WIN) | |
40 // Returns the module handle to which an address belongs. The reference count | |
41 // of the module is not incremented. | |
42 BASE_EXPORT HMODULE GetModuleFromAddress(void* address); | |
43 #endif | |
44 | |
45 #if defined(OS_LINUX) || defined(OS_ANDROID) | 35 #if defined(OS_LINUX) || defined(OS_ANDROID) |
46 BASE_EXPORT extern size_t g_oom_size; | 36 BASE_EXPORT extern size_t g_oom_size; |
47 | 37 |
48 // The maximum allowed value for the OOM score. | 38 // The maximum allowed value for the OOM score. |
49 const int kMaxOomScore = 1000; | 39 const int kMaxOomScore = 1000; |
50 | 40 |
51 // This adjusts /proc/<pid>/oom_score_adj so the Linux OOM killer will | 41 // This adjusts /proc/<pid>/oom_score_adj so the Linux OOM killer will |
52 // prefer to kill certain process types over others. The range for the | 42 // prefer to kill certain process types over others. The range for the |
53 // adjustment is [-1000, 1000], with [0, 1000] being user accessible. | 43 // adjustment is [-1000, 1000], with [0, 1000] being user accessible. |
54 // If the Linux system doesn't support the newer oom_score_adj range | 44 // If the Linux system doesn't support the newer oom_score_adj range |
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70 // set to NULL, otherwise it holds the memory address. | 60 // set to NULL, otherwise it holds the memory address. |
71 BASE_EXPORT WARN_UNUSED_RESULT bool UncheckedMalloc(size_t size, | 61 BASE_EXPORT WARN_UNUSED_RESULT bool UncheckedMalloc(size_t size, |
72 void** result); | 62 void** result); |
73 BASE_EXPORT WARN_UNUSED_RESULT bool UncheckedCalloc(size_t num_items, | 63 BASE_EXPORT WARN_UNUSED_RESULT bool UncheckedCalloc(size_t num_items, |
74 size_t size, | 64 size_t size, |
75 void** result); | 65 void** result); |
76 | 66 |
77 } // namespace base | 67 } // namespace base |
78 | 68 |
79 #endif // BASE_PROCESS_MEMORY_H_ | 69 #endif // BASE_PROCESS_MEMORY_H_ |
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