| // Copyright 2015 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "base/trace_event/malloc_dump_provider.h" |
| |
| #include <malloc.h> |
| |
| #include "base/trace_event/process_memory_dump.h" |
| |
| namespace base { |
| namespace trace_event { |
| |
| // static |
| const char MallocDumpProvider::kAllocatedObjects[] = "malloc/allocated_objects"; |
| |
| // static |
| MallocDumpProvider* MallocDumpProvider::GetInstance() { |
| return Singleton<MallocDumpProvider, |
| LeakySingletonTraits<MallocDumpProvider>>::get(); |
| } |
| |
| MallocDumpProvider::MallocDumpProvider() { |
| } |
| |
| MallocDumpProvider::~MallocDumpProvider() { |
| } |
| |
| // Called at trace dump point time. Creates a snapshot the memory counters for |
| // the current process. |
| bool MallocDumpProvider::OnMemoryDump(ProcessMemoryDump* pmd) { |
| struct mallinfo info = mallinfo(); |
| DCHECK_GE(info.arena + info.hblkhd, info.uordblks); |
| |
| // When the system allocator is implemented by tcmalloc, the total physical |
| // size is given by |arena| and |hblkhd| is 0. In case of Android's jemalloc |
| // |arena| is 0 and the outer pages size is reported by |hblkhd|. In case of |
| // dlmalloc the total is given by |arena| + |hblkhd|. |
| // For more details see link: http://goo.gl/fMR8lF. |
| MemoryAllocatorDump* outer_dump = pmd->CreateAllocatorDump("malloc"); |
| outer_dump->AddScalar(MemoryAllocatorDump::kNameSize, |
| MemoryAllocatorDump::kUnitsBytes, |
| info.arena + info.hblkhd); |
| |
| // Total allocated space is given by |uordblks|. |
| MemoryAllocatorDump* inner_dump = pmd->CreateAllocatorDump(kAllocatedObjects); |
| inner_dump->AddScalar(MemoryAllocatorDump::kNameSize, |
| MemoryAllocatorDump::kUnitsBytes, info.uordblks); |
| |
| return true; |
| } |
| |
| } // namespace trace_event |
| } // namespace base |