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// 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 "third_party/blink/renderer/platform/partition_alloc_memory_dump_provider.h"
#include <unordered_map>
#include "base/allocator/partition_allocator/partition_alloc.h"
#include "base/strings/stringprintf.h"
#include "base/trace_event/process_memory_dump.h"
#include "third_party/blink/renderer/platform/wtf/allocator/partitions.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
namespace blink {
namespace {
const char kPartitionAllocDumpName[] = "partition_alloc";
const char kPartitionsDumpName[] = "partitions";
std::string GetPartitionDumpName(const char* partition_name) {
return base::StringPrintf("%s/%s/%s", kPartitionAllocDumpName,
kPartitionsDumpName, partition_name);
}
// This class is used to invert the dependency of PartitionAlloc on the
// PartitionAllocMemoryDumpProvider. This implements an interface that will
// be called with memory statistics for each bucket in the allocator.
class PartitionStatsDumperImpl final : public base::PartitionStatsDumper {
DISALLOW_NEW();
WTF_MAKE_NONCOPYABLE(PartitionStatsDumperImpl);
public:
PartitionStatsDumperImpl(
base::trace_event::ProcessMemoryDump* memory_dump,
base::trace_event::MemoryDumpLevelOfDetail level_of_detail)
: memory_dump_(memory_dump), uid_(0), total_active_bytes_(0) {}
// PartitionStatsDumper implementation.
void PartitionDumpTotals(const char* partition_name,
const base::PartitionMemoryStats*) override;
void PartitionsDumpBucketStats(
const char* partition_name,
const base::PartitionBucketMemoryStats*) override;
size_t TotalActiveBytes() const { return total_active_bytes_; }
private:
base::trace_event::ProcessMemoryDump* memory_dump_;
unsigned long uid_;
size_t total_active_bytes_;
};
void PartitionStatsDumperImpl::PartitionDumpTotals(
const char* partition_name,
const base::PartitionMemoryStats* memory_stats) {
total_active_bytes_ += memory_stats->total_active_bytes;
std::string dump_name = GetPartitionDumpName(partition_name);
base::trace_event::MemoryAllocatorDump* allocator_dump =
memory_dump_->CreateAllocatorDump(dump_name);
allocator_dump->AddScalar("size", "bytes",
memory_stats->total_resident_bytes);
allocator_dump->AddScalar("allocated_objects_size", "bytes",
memory_stats->total_active_bytes);
allocator_dump->AddScalar("virtual_size", "bytes",
memory_stats->total_mmapped_bytes);
allocator_dump->AddScalar("virtual_committed_size", "bytes",
memory_stats->total_committed_bytes);
allocator_dump->AddScalar("decommittable_size", "bytes",
memory_stats->total_decommittable_bytes);
allocator_dump->AddScalar("discardable_size", "bytes",
memory_stats->total_discardable_bytes);
}
void PartitionStatsDumperImpl::PartitionsDumpBucketStats(
const char* partition_name,
const base::PartitionBucketMemoryStats* memory_stats) {
DCHECK(memory_stats->is_valid);
std::string dump_name = GetPartitionDumpName(partition_name);
if (memory_stats->is_direct_map) {
dump_name.append(base::StringPrintf("/directMap_%lu", ++uid_));
} else {
dump_name.append(base::StringPrintf(
"/bucket_%u", static_cast<unsigned>(memory_stats->bucket_slot_size)));
}
base::trace_event::MemoryAllocatorDump* allocator_dump =
memory_dump_->CreateAllocatorDump(dump_name);
allocator_dump->AddScalar("size", "bytes", memory_stats->resident_bytes);
allocator_dump->AddScalar("allocated_objects_size", "bytes",
memory_stats->active_bytes);
allocator_dump->AddScalar("slot_size", "bytes",
memory_stats->bucket_slot_size);
allocator_dump->AddScalar("decommittable_size", "bytes",
memory_stats->decommittable_bytes);
allocator_dump->AddScalar("discardable_size", "bytes",
memory_stats->discardable_bytes);
allocator_dump->AddScalar("total_pages_size", "bytes",
memory_stats->allocated_page_size);
allocator_dump->AddScalar("active_pages", "objects",
memory_stats->num_active_pages);
allocator_dump->AddScalar("full_pages", "objects",
memory_stats->num_full_pages);
allocator_dump->AddScalar("empty_pages", "objects",
memory_stats->num_empty_pages);
allocator_dump->AddScalar("decommitted_pages", "objects",
memory_stats->num_decommitted_pages);
}
} // namespace
PartitionAllocMemoryDumpProvider* PartitionAllocMemoryDumpProvider::Instance() {
DEFINE_STATIC_LOCAL(PartitionAllocMemoryDumpProvider, instance, ());
return &instance;
}
bool PartitionAllocMemoryDumpProvider::OnMemoryDump(
const base::trace_event::MemoryDumpArgs& args,
base::trace_event::ProcessMemoryDump* memory_dump) {
using base::trace_event::MemoryDumpLevelOfDetail;
MemoryDumpLevelOfDetail level_of_detail = args.level_of_detail;
PartitionStatsDumperImpl partition_stats_dumper(memory_dump, level_of_detail);
base::trace_event::MemoryAllocatorDump* partitions_dump =
memory_dump->CreateAllocatorDump(base::StringPrintf(
"%s/%s", kPartitionAllocDumpName, kPartitionsDumpName));
// This method calls memoryStats.partitionsDumpBucketStats with memory
// statistics.
WTF::Partitions::DumpMemoryStats(
level_of_detail != MemoryDumpLevelOfDetail::DETAILED,
&partition_stats_dumper);
base::trace_event::MemoryAllocatorDump* allocated_objects_dump =
memory_dump->CreateAllocatorDump(
WTF::Partitions::kAllocatedObjectPoolName);
allocated_objects_dump->AddScalar("size", "bytes",
partition_stats_dumper.TotalActiveBytes());
memory_dump->AddOwnershipEdge(allocated_objects_dump->guid(),
partitions_dump->guid());
return true;
}
PartitionAllocMemoryDumpProvider::PartitionAllocMemoryDumpProvider() = default;
PartitionAllocMemoryDumpProvider::~PartitionAllocMemoryDumpProvider() = default;
} // namespace blink
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