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Issue 1647803004: Move base to DEPS (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 4 years, 10 months ago
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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
3 // found in the LICENSE file.
4
5 #include "base/trace_event/malloc_dump_provider.h"
6
7 #include <malloc.h>
8
9 #include "base/trace_event/process_memory_dump.h"
10
11 namespace base {
12 namespace trace_event {
13
14 // static
15 const char MallocDumpProvider::kAllocatedObjects[] = "malloc/allocated_objects";
16
17 // static
18 MallocDumpProvider* MallocDumpProvider::GetInstance() {
19 return Singleton<MallocDumpProvider,
20 LeakySingletonTraits<MallocDumpProvider>>::get();
21 }
22
23 MallocDumpProvider::MallocDumpProvider() {
24 }
25
26 MallocDumpProvider::~MallocDumpProvider() {
27 }
28
29 // Called at trace dump point time. Creates a snapshot the memory counters for
30 // the current process.
31 bool MallocDumpProvider::OnMemoryDump(ProcessMemoryDump* pmd) {
32 struct mallinfo info = mallinfo();
33 DCHECK_GE(info.arena + info.hblkhd, info.uordblks);
34
35 // When the system allocator is implemented by tcmalloc, the total heap
36 // size is given by |arena| and |hblkhd| is 0. In case of Android's jemalloc
37 // |arena| is 0 and the outer pages size is reported by |hblkhd|. In case of
38 // dlmalloc the total is given by |arena| + |hblkhd|.
39 // For more details see link: http://goo.gl/fMR8lF.
40 MemoryAllocatorDump* outer_dump = pmd->CreateAllocatorDump("malloc");
41 outer_dump->AddScalar("heap_virtual_size", MemoryAllocatorDump::kUnitsBytes,
42 info.arena + info.hblkhd);
43
44 // Total allocated space is given by |uordblks|.
45 MemoryAllocatorDump* inner_dump = pmd->CreateAllocatorDump(kAllocatedObjects);
46 inner_dump->AddScalar(MemoryAllocatorDump::kNameSize,
47 MemoryAllocatorDump::kUnitsBytes, info.uordblks);
48
49 return true;
50 }
51
52 } // namespace trace_event
53 } // namespace base
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