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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/trace_event/process_memory_dump.h" | 10 #include "base/trace_event/process_memory_dump.h" |
10 | 11 |
11 namespace base { | 12 namespace base { |
12 namespace trace_event { | 13 namespace trace_event { |
13 | 14 |
14 // static | 15 // static |
15 const char MallocDumpProvider::kAllocatedObjects[] = "malloc/allocated_objects"; | 16 const char MallocDumpProvider::kAllocatedObjects[] = "malloc/allocated_objects"; |
16 | 17 |
17 // static | 18 // static |
18 MallocDumpProvider* MallocDumpProvider::GetInstance() { | 19 MallocDumpProvider* MallocDumpProvider::GetInstance() { |
19 return Singleton<MallocDumpProvider, | 20 return Singleton<MallocDumpProvider, |
20 LeakySingletonTraits<MallocDumpProvider>>::get(); | 21 LeakySingletonTraits<MallocDumpProvider>>::get(); |
21 } | 22 } |
22 | 23 |
23 MallocDumpProvider::MallocDumpProvider() { | 24 MallocDumpProvider::MallocDumpProvider() { |
24 } | 25 } |
25 | 26 |
26 MallocDumpProvider::~MallocDumpProvider() { | 27 MallocDumpProvider::~MallocDumpProvider() { |
27 } | 28 } |
28 | 29 |
29 // Called at trace dump point time. Creates a snapshot the memory counters for | 30 // Called at trace dump point time. Creates a snapshot the memory counters for |
30 // the current process. | 31 // the current process. |
31 bool MallocDumpProvider::OnMemoryDump(const MemoryDumpArgs& args, | 32 bool MallocDumpProvider::OnMemoryDump(const MemoryDumpArgs& args, |
32 ProcessMemoryDump* pmd) { | 33 ProcessMemoryDump* pmd) { |
33 struct mallinfo info = mallinfo(); | 34 size_t total_virtual_size = 0; |
34 DCHECK_GE(info.arena + info.hblkhd, info.uordblks); | 35 size_t resident_size = 0; |
| 36 size_t allocated_objects_size = 0; |
35 | 37 |
36 // When the system allocator is implemented by tcmalloc, the total heap | 38 allocator::thunks::GetNumericPropertyFunction get_property_function = |
37 // size is given by |arena| and |hblkhd| is 0. In case of Android's jemalloc | 39 allocator::thunks::GetGetNumericPropertyFunction(); |
38 // |arena| is 0 and the outer pages size is reported by |hblkhd|. In case of | 40 if (get_property_function) { |
39 // dlmalloc the total is given by |arena| + |hblkhd|. | 41 // If the function is not null then tcmalloc is used. See |
40 // For more details see link: http://goo.gl/fMR8lF. | 42 // MallocExtension::getNumericProperty. |
| 43 size_t pageheap_unmapped_bytes = 0; |
| 44 bool res = get_property_function("generic.heap_size", &total_virtual_size); |
| 45 DCHECK(res); |
| 46 res = get_property_function("tcmalloc.pageheap_unmapped_bytes", |
| 47 &pageheap_unmapped_bytes); |
| 48 DCHECK(res); |
| 49 res = get_property_function("generic.current_allocated_bytes", |
| 50 &allocated_objects_size); |
| 51 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 { |
| 61 struct mallinfo info = mallinfo(); |
| 62 DCHECK_GE(info.arena + info.hblkhd, info.uordblks); |
| 63 |
| 64 // 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 |
| 66 // |arena| + |hblkhd|. For more details see link: http://goo.gl/fMR8lF. |
| 67 total_virtual_size = info.arena + info.hblkhd; |
| 68 resident_size = info.uordblks; |
| 69 allocated_objects_size = info.uordblks; |
| 70 } |
| 71 |
41 MemoryAllocatorDump* outer_dump = pmd->CreateAllocatorDump("malloc"); | 72 MemoryAllocatorDump* outer_dump = pmd->CreateAllocatorDump("malloc"); |
42 outer_dump->AddScalar("virtual_size", | 73 outer_dump->AddScalar("virtual_size", MemoryAllocatorDump::kUnitsBytes, |
43 MemoryAllocatorDump::kUnitsBytes, | 74 total_virtual_size); |
44 info.arena + info.hblkhd); | 75 outer_dump->AddScalar(MemoryAllocatorDump::kNameSize, |
| 76 MemoryAllocatorDump::kUnitsBytes, resident_size); |
45 | 77 |
46 // Total allocated space is given by |uordblks|. | 78 // Total allocated space is given by |uordblks|. |
47 MemoryAllocatorDump* inner_dump = pmd->CreateAllocatorDump(kAllocatedObjects); | 79 MemoryAllocatorDump* inner_dump = pmd->CreateAllocatorDump(kAllocatedObjects); |
48 inner_dump->AddScalar(MemoryAllocatorDump::kNameSize, | 80 inner_dump->AddScalar(MemoryAllocatorDump::kNameSize, |
49 MemoryAllocatorDump::kUnitsBytes, info.uordblks); | 81 MemoryAllocatorDump::kUnitsBytes, |
| 82 allocated_objects_size); |
50 | 83 |
51 return true; | 84 return true; |
52 } | 85 } |
53 | 86 |
54 } // namespace trace_event | 87 } // namespace trace_event |
55 } // namespace base | 88 } // namespace base |
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