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/java_heap_dump_provider_android.h" 6 7 #include "base/android/java_runtime.h" 8 #include "base/trace_event/process_memory_dump.h" 9 10 namespace base { 11 namespace trace_event { 12 13 // static 14 JavaHeapDumpProvider* JavaHeapDumpProvider::GetInstance() { 15 return Singleton<JavaHeapDumpProvider, 16 LeakySingletonTraits<JavaHeapDumpProvider>>::get(); 17 } 18 19 JavaHeapDumpProvider::JavaHeapDumpProvider() { 20 } 21 22 JavaHeapDumpProvider::~JavaHeapDumpProvider() { 23 } 24 25 // Called at trace dump point time. Creates a snapshot with the memory counters 26 // for the current process. 27 bool JavaHeapDumpProvider::OnMemoryDump(const MemoryDumpArgs& args, 28 ProcessMemoryDump* pmd) { 29 // These numbers come from java.lang.Runtime stats. 30 long total_heap_size = 0; 31 long free_heap_size = 0; 32 android::JavaRuntime::GetMemoryUsage(&total_heap_size, &free_heap_size); 33 34 MemoryAllocatorDump* outer_dump = pmd->CreateAllocatorDump("java_heap"); 35 outer_dump->AddScalar(MemoryAllocatorDump::kNameSize, 36 MemoryAllocatorDump::kUnitsBytes, total_heap_size); 37 38 MemoryAllocatorDump* inner_dump = 39 pmd->CreateAllocatorDump("java_heap/allocated_objects"); 40 inner_dump->AddScalar(MemoryAllocatorDump::kNameSize, 41 MemoryAllocatorDump::kUnitsBytes, 42 total_heap_size - free_heap_size); 43 return true; 44 } 45 46 } // namespace trace_event 47 } // namespace base 48
