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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/trace_event/trace_event_memory_overhead.h"
#include <algorithm>
#include "base/bits.h"
#include "base/memory/ref_counted_memory.h"
#include "base/notreached.h"
#include "base/strings/stringprintf.h"
#include "base/trace_event/memory_allocator_dump.h"
#include "base/trace_event/memory_usage_estimator.h"
#include "base/trace_event/process_memory_dump.h"
#include "base/values.h"
namespace base::trace_event {
namespace {
const char* ObjectTypeToString(TraceEventMemoryOverhead::ObjectType type) {
switch (type) {
case TraceEventMemoryOverhead::kOther:
return "(Other)";
case TraceEventMemoryOverhead::kTraceBuffer:
return "TraceBuffer";
case TraceEventMemoryOverhead::kTraceBufferChunk:
return "TraceBufferChunk";
case TraceEventMemoryOverhead::kTraceEvent:
return "TraceEvent";
case TraceEventMemoryOverhead::kUnusedTraceEvent:
return "TraceEvent(Unused)";
case TraceEventMemoryOverhead::kTracedValue:
return "TracedValue";
case TraceEventMemoryOverhead::kConvertableToTraceFormat:
return "ConvertableToTraceFormat";
case TraceEventMemoryOverhead::kHeapProfilerAllocationRegister:
return "AllocationRegister";
case TraceEventMemoryOverhead::kHeapProfilerTypeNameDeduplicator:
return "TypeNameDeduplicator";
case TraceEventMemoryOverhead::kHeapProfilerStackFrameDeduplicator:
return "StackFrameDeduplicator";
case TraceEventMemoryOverhead::kStdString:
return "std::string";
case TraceEventMemoryOverhead::kBaseValue:
return "base::Value";
case TraceEventMemoryOverhead::kTraceEventMemoryOverhead:
return "TraceEventMemoryOverhead";
case TraceEventMemoryOverhead::kFrameMetrics:
return "FrameMetrics";
case TraceEventMemoryOverhead::kLast:
NOTREACHED();
}
NOTREACHED();
return "BUG";
}
} // namespace
TraceEventMemoryOverhead::TraceEventMemoryOverhead() : allocated_objects_() {}
TraceEventMemoryOverhead::~TraceEventMemoryOverhead() = default;
void TraceEventMemoryOverhead::AddInternal(ObjectType object_type,
size_t count,
size_t allocated_size_in_bytes,
size_t resident_size_in_bytes) {
ObjectCountAndSize& count_and_size =
allocated_objects_[static_cast<uint32_t>(object_type)];
count_and_size.count += count;
count_and_size.allocated_size_in_bytes += allocated_size_in_bytes;
count_and_size.resident_size_in_bytes += resident_size_in_bytes;
}
void TraceEventMemoryOverhead::Add(ObjectType object_type,
size_t allocated_size_in_bytes) {
Add(object_type, allocated_size_in_bytes, allocated_size_in_bytes);
}
void TraceEventMemoryOverhead::Add(ObjectType object_type,
size_t allocated_size_in_bytes,
size_t resident_size_in_bytes) {
AddInternal(object_type, 1, allocated_size_in_bytes, resident_size_in_bytes);
}
void TraceEventMemoryOverhead::AddString(const std::string& str) {
Add(kStdString, EstimateMemoryUsage(str));
}
void TraceEventMemoryOverhead::AddRefCountedString(
const RefCountedString& str) {
Add(kOther, sizeof(RefCountedString));
AddString(str.data());
}
void TraceEventMemoryOverhead::AddValue(const Value& value) {
switch (value.type()) {
case Value::Type::NONE:
case Value::Type::BOOLEAN:
case Value::Type::INTEGER:
case Value::Type::DOUBLE:
Add(kBaseValue, sizeof(Value));
break;
case Value::Type::STRING:
Add(kBaseValue, sizeof(Value));
AddString(value.GetString());
break;
case Value::Type::BINARY:
Add(kBaseValue, sizeof(Value) + value.GetBlob().size());
break;
case Value::Type::DICT:
Add(kBaseValue, sizeof(Value));
for (const auto pair : value.GetDict()) {
AddString(pair.first);
AddValue(pair.second);
}
break;
case Value::Type::LIST:
Add(kBaseValue, sizeof(Value));
for (const auto& v : value.GetList())
AddValue(v);
break;
}
}
void TraceEventMemoryOverhead::AddSelf() {
Add(kTraceEventMemoryOverhead, sizeof(*this));
}
size_t TraceEventMemoryOverhead::GetCount(ObjectType object_type) const {
CHECK(object_type < kLast);
return allocated_objects_[static_cast<uint32_t>(object_type)].count;
}
void TraceEventMemoryOverhead::Update(const TraceEventMemoryOverhead& other) {
for (uint32_t i = 0; i < kLast; i++) {
const ObjectCountAndSize& other_entry = other.allocated_objects_[i];
AddInternal(static_cast<ObjectType>(i), other_entry.count,
other_entry.allocated_size_in_bytes,
other_entry.resident_size_in_bytes);
}
}
void TraceEventMemoryOverhead::DumpInto(const char* base_name,
ProcessMemoryDump* pmd) const {
for (uint32_t i = 0; i < kLast; i++) {
const ObjectCountAndSize& count_and_size = allocated_objects_[i];
if (count_and_size.allocated_size_in_bytes == 0)
continue;
std::string dump_name = StringPrintf(
"%s/%s", base_name, ObjectTypeToString(static_cast<ObjectType>(i)));
MemoryAllocatorDump* mad = pmd->CreateAllocatorDump(dump_name);
mad->AddScalar(MemoryAllocatorDump::kNameSize,
MemoryAllocatorDump::kUnitsBytes,
count_and_size.allocated_size_in_bytes);
mad->AddScalar("resident_size", MemoryAllocatorDump::kUnitsBytes,
count_and_size.resident_size_in_bytes);
mad->AddScalar(MemoryAllocatorDump::kNameObjectCount,
MemoryAllocatorDump::kUnitsObjects, count_and_size.count);
}
}
} // namespace base::trace_event
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