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Side by Side Diff: base/process/memory.h

Issue 55333002: Make possible to check memory allocations inside chromium (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: fix component and windows build Created 6 years, 11 months ago
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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 "base/base_export.h" 8 #include "base/base_export.h"
9 #include "base/basictypes.h" 9 #include "base/basictypes.h"
10 #include "base/process/process_handle.h" 10 #include "base/process/process_handle.h"
11 #include "build/build_config.h" 11 #include "build/build_config.h"
12 12
13 #if defined(OS_WIN) 13 #if defined(OS_WIN)
14 #include <windows.h> 14 #include <windows.h>
15 #endif 15 #endif
16 16
17 #if defined(USE_TCMALLOC)
18 extern "C" {
19 typedef void* (*tc_malloc_skip_new_handler_function)(size_t size);
20 }
21 #endif
22
17 namespace base { 23 namespace base {
18 24
19 // Enables low fragmentation heap (LFH) for every heaps of this process. This 25 // Enables low fragmentation heap (LFH) for every heaps of this process. This
20 // won't have any effect on heaps created after this function call. It will not 26 // won't have any effect on heaps created after this function call. It will not
21 // modify data allocated in the heaps before calling this function. So it is 27 // modify data allocated in the heaps before calling this function. So it is
22 // better to call this function early in initialization and again before 28 // better to call this function early in initialization and again before
23 // entering the main loop. 29 // entering the main loop.
24 // Note: Returns true on Windows 2000 without doing anything. 30 // Note: Returns true on Windows 2000 without doing anything.
25 BASE_EXPORT bool EnableLowFragmentationHeap(); 31 BASE_EXPORT bool EnableLowFragmentationHeap();
26 32
(...skipping 19 matching lines...) Expand all
46 // This adjusts /proc/<pid>/oom_score_adj so the Linux OOM killer will 52 // This adjusts /proc/<pid>/oom_score_adj so the Linux OOM killer will
47 // prefer to kill certain process types over others. The range for the 53 // prefer to kill certain process types over others. The range for the
48 // adjustment is [-1000, 1000], with [0, 1000] being user accessible. 54 // adjustment is [-1000, 1000], with [0, 1000] being user accessible.
49 // If the Linux system doesn't support the newer oom_score_adj range 55 // If the Linux system doesn't support the newer oom_score_adj range
50 // of [0, 1000], then we revert to using the older oom_adj, and 56 // of [0, 1000], then we revert to using the older oom_adj, and
51 // translate the given value into [0, 15]. Some aliasing of values 57 // translate the given value into [0, 15]. Some aliasing of values
52 // may occur in that case, of course. 58 // may occur in that case, of course.
53 BASE_EXPORT bool AdjustOOMScore(ProcessId process, int score); 59 BASE_EXPORT bool AdjustOOMScore(ProcessId process, int score);
54 #endif 60 #endif
55 61
62 // Special allocator functions for callers that want to check for OOM.
63 // These will not abort if the allocation fails even if
64 // EnableTerminationOnOutOfMemory has been called.
65 // This can be useful for huge and/or unpredictable size memory allocations.
66 // Return value tells whether the allocation succeed. If it fails |result| is
67 // set to NULL, otherwise it holds the memory address.
jln (very slow on Chromium) 2014/01/29 01:34:35 Could you add a comment along the lines of: "Pleas
68 BASE_EXPORT WARN_UNUSED_RESULT bool UncheckedMalloc(size_t size,
69 void** result);
70 BASE_EXPORT WARN_UNUSED_RESULT bool UncheckedCalloc(size_t num_items,
71 size_t size,
72 void** result);
73
74 // FIXME: make Skia use the new interface and remove these.
willchan no longer on Chromium 2014/01/16 01:30:05 Nit: Please use TODO(username). Doesn't mean you h
56 #if defined(OS_MACOSX) 75 #if defined(OS_MACOSX)
57 // Very large images or svg canvases can cause huge mallocs. Skia
58 // does tricks on tcmalloc-based systems to allow malloc to fail with
59 // a NULL rather than hit the oom crasher. This replicates that for
60 // OSX.
61 //
62 // IF YOU USE THIS WITHOUT CONSULTING YOUR FRIENDLY OSX DEVELOPER,
63 // YOUR CODE IS LIKELY TO BE REVERTED. THANK YOU.
64 BASE_EXPORT void* UncheckedMalloc(size_t size); 76 BASE_EXPORT void* UncheckedMalloc(size_t size);
65 BASE_EXPORT void* UncheckedCalloc(size_t num_items, size_t size); 77 BASE_EXPORT void* UncheckedCalloc(size_t num_items, size_t size);
66 #endif // defined(OS_MACOSX) 78 #endif
79
80 #if defined(USE_TCMALLOC)
81 BASE_EXPORT void SetTCMallocSkipNewHandlerFunction(
82 tc_malloc_skip_new_handler_function function);
83 #endif
67 84
68 } // namespace base 85 } // namespace base
69 86
70 #endif // BASE_PROCESS_MEMORY_H_ 87 #endif // BASE_PROCESS_MEMORY_H_
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