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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 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 #include "base/trace_event/malloc_dump_provider.h" | 5 #include "base/trace_event/malloc_dump_provider.h" |
6 | 6 |
7 #include <malloc.h> | 7 #include <malloc.h> |
8 | 8 |
9 #include "base/allocator/allocator_extension_thunks.h" | 9 #include "base/allocator/allocator_extension_thunks.h" |
10 #include "base/trace_event/process_memory_dump.h" | 10 #include "base/trace_event/process_memory_dump.h" |
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33 ProcessMemoryDump* pmd) { | 33 ProcessMemoryDump* pmd) { |
34 size_t total_virtual_size = 0; | 34 size_t total_virtual_size = 0; |
35 size_t resident_size = 0; | 35 size_t resident_size = 0; |
36 size_t allocated_objects_size = 0; | 36 size_t allocated_objects_size = 0; |
37 | 37 |
38 allocator::thunks::GetNumericPropertyFunction get_property_function = | 38 allocator::thunks::GetNumericPropertyFunction get_property_function = |
39 allocator::thunks::GetGetNumericPropertyFunction(); | 39 allocator::thunks::GetGetNumericPropertyFunction(); |
40 if (get_property_function) { | 40 if (get_property_function) { |
41 // If the function is not null then tcmalloc is used. See | 41 // If the function is not null then tcmalloc is used. See |
42 // MallocExtension::getNumericProperty. | 42 // MallocExtension::getNumericProperty. |
43 size_t pageheap_unmapped_bytes = 0; | |
44 bool res = get_property_function("generic.heap_size", &total_virtual_size); | 43 bool res = get_property_function("generic.heap_size", &total_virtual_size); |
45 DCHECK(res); | 44 DCHECK(res); |
46 res = get_property_function("tcmalloc.pageheap_unmapped_bytes", | 45 res = get_property_function("generic.total_physical_bytes", &resident_size); |
47 &pageheap_unmapped_bytes); | |
48 DCHECK(res); | 46 DCHECK(res); |
49 res = get_property_function("generic.current_allocated_bytes", | 47 res = get_property_function("generic.current_allocated_bytes", |
50 &allocated_objects_size); | 48 &allocated_objects_size); |
51 DCHECK(res); | 49 DCHECK(res); |
52 | |
53 // Please see TCMallocImplementation::GetStats implementation for | |
54 // explanation | |
55 // about this math. | |
56 // TODO(ssid): Usage of metadata is not included in page heap bytes | |
57 // (crbug.com/546491). MallocExtension::GetNumericProperty will be extended | |
58 // to get this value. | |
59 resident_size = total_virtual_size - pageheap_unmapped_bytes; | |
60 } else { | 50 } else { |
61 struct mallinfo info = mallinfo(); | 51 struct mallinfo info = mallinfo(); |
62 DCHECK_GE(info.arena + info.hblkhd, info.uordblks); | 52 DCHECK_GE(info.arena + info.hblkhd, info.uordblks); |
63 | 53 |
64 // In case of Android's jemalloc |arena| is 0 and the outer pages size is | 54 // In case of Android's jemalloc |arena| is 0 and the outer pages size is |
65 // reported by |hblkhd|. In case of dlmalloc the total is given by | 55 // reported by |hblkhd|. In case of dlmalloc the total is given by |
66 // |arena| + |hblkhd|. For more details see link: http://goo.gl/fMR8lF. | 56 // |arena| + |hblkhd|. For more details see link: http://goo.gl/fMR8lF. |
67 total_virtual_size = info.arena + info.hblkhd; | 57 total_virtual_size = info.arena + info.hblkhd; |
68 resident_size = info.uordblks; | 58 resident_size = info.uordblks; |
69 allocated_objects_size = info.uordblks; | 59 allocated_objects_size = info.uordblks; |
70 } | 60 } |
71 | 61 |
72 MemoryAllocatorDump* outer_dump = pmd->CreateAllocatorDump("malloc"); | 62 MemoryAllocatorDump* outer_dump = pmd->CreateAllocatorDump("malloc"); |
73 outer_dump->AddScalar("virtual_size", MemoryAllocatorDump::kUnitsBytes, | 63 outer_dump->AddScalar("virtual_size", MemoryAllocatorDump::kUnitsBytes, |
74 total_virtual_size); | 64 total_virtual_size); |
75 outer_dump->AddScalar(MemoryAllocatorDump::kNameSize, | 65 outer_dump->AddScalar(MemoryAllocatorDump::kNameSize, |
76 MemoryAllocatorDump::kUnitsBytes, resident_size); | 66 MemoryAllocatorDump::kUnitsBytes, resident_size); |
77 | 67 |
78 // Total allocated space is given by |uordblks|. | 68 // Total allocated space is given by |uordblks|. |
79 MemoryAllocatorDump* inner_dump = pmd->CreateAllocatorDump(kAllocatedObjects); | 69 MemoryAllocatorDump* inner_dump = pmd->CreateAllocatorDump(kAllocatedObjects); |
80 inner_dump->AddScalar(MemoryAllocatorDump::kNameSize, | 70 inner_dump->AddScalar(MemoryAllocatorDump::kNameSize, |
81 MemoryAllocatorDump::kUnitsBytes, | 71 MemoryAllocatorDump::kUnitsBytes, |
82 allocated_objects_size); | 72 allocated_objects_size); |
83 | 73 |
84 return true; | 74 return true; |
85 } | 75 } |
86 | 76 |
87 } // namespace trace_event | 77 } // namespace trace_event |
88 } // namespace base | 78 } // namespace base |
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