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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/winheap_dump_provider_win.h" | 5 #include "base/trace_event/winheap_dump_provider_win.h" |
6 | 6 |
7 #include <windows.h> | 7 #include <windows.h> |
8 | 8 |
9 #include "base/debug/profiler.h" | 9 #include "base/debug/profiler.h" |
10 #include "base/strings/string_util.h" | 10 #include "base/strings/string_util.h" |
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36 MemoryAllocatorDump::kUnitsBytes, | 36 MemoryAllocatorDump::kUnitsBytes, |
37 heap_info.allocated_size); | 37 heap_info.allocated_size); |
38 inner_dump->AddScalar(MemoryAllocatorDump::kNameObjectsCount, | 38 inner_dump->AddScalar(MemoryAllocatorDump::kNameObjectsCount, |
39 MemoryAllocatorDump::kUnitsObjects, | 39 MemoryAllocatorDump::kUnitsObjects, |
40 heap_info.block_count); | 40 heap_info.block_count); |
41 } | 41 } |
42 | 42 |
43 } // namespace | 43 } // namespace |
44 | 44 |
45 WinHeapDumpProvider* WinHeapDumpProvider::GetInstance() { | 45 WinHeapDumpProvider* WinHeapDumpProvider::GetInstance() { |
46 return Singleton<WinHeapDumpProvider, | 46 return base::Singleton<WinHeapDumpProvider, |
47 LeakySingletonTraits<WinHeapDumpProvider>>::get(); | 47 base::LeakySingletonTraits<WinHeapDumpProvider>>::get(); |
48 } | 48 } |
49 | 49 |
50 bool WinHeapDumpProvider::OnMemoryDump(const MemoryDumpArgs& args, | 50 bool WinHeapDumpProvider::OnMemoryDump(const MemoryDumpArgs& args, |
51 ProcessMemoryDump* pmd) { | 51 ProcessMemoryDump* pmd) { |
52 // This method might be flaky for 2 reasons: | 52 // This method might be flaky for 2 reasons: |
53 // - GetProcessHeaps is racy by design. It returns a snapshot of the | 53 // - GetProcessHeaps is racy by design. It returns a snapshot of the |
54 // available heaps, but there's no guarantee that that snapshot remains | 54 // available heaps, but there's no guarantee that that snapshot remains |
55 // valid. If a heap disappears between GetProcessHeaps() and HeapWalk() | 55 // valid. If a heap disappears between GetProcessHeaps() and HeapWalk() |
56 // then chaos should be assumed. This flakyness is acceptable for tracing. | 56 // then chaos should be assumed. This flakyness is acceptable for tracing. |
57 // - The MSDN page for HeapLock says: "If the HeapLock function is called on | 57 // - The MSDN page for HeapLock says: "If the HeapLock function is called on |
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120 } else if ((heap_entry.wFlags & PROCESS_HEAP_REGION) != 0) { | 120 } else if ((heap_entry.wFlags & PROCESS_HEAP_REGION) != 0) { |
121 heap_info->committed_size += heap_entry.Region.dwCommittedSize; | 121 heap_info->committed_size += heap_entry.Region.dwCommittedSize; |
122 } | 122 } |
123 } | 123 } |
124 CHECK(::HeapUnlock(heap_info->heap_id) == TRUE); | 124 CHECK(::HeapUnlock(heap_info->heap_id) == TRUE); |
125 return true; | 125 return true; |
126 } | 126 } |
127 | 127 |
128 } // namespace trace_event | 128 } // namespace trace_event |
129 } // namespace base | 129 } // namespace base |
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