chromium/base/trace_event/malloc_dump_provider.h

// 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.

#ifndef BASE_TRACE_EVENT_MALLOC_DUMP_PROVIDER_H_
#define BASE_TRACE_EVENT_MALLOC_DUMP_PROVIDER_H_

#include "base/allocator/buildflags.h"
#include "base/base_export.h"
#include "base/functional/callback.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/singleton.h"
#include "base/synchronization/lock.h"
#include "base/time/time.h"
#include "base/trace_event/memory_dump_provider.h"
#include "build/build_config.h"
#include "partition_alloc/buildflags.h"
#include "partition_alloc/partition_stats.h"

#if BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || BUILDFLAG(IS_ANDROID) || \
    BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC)
#define MALLOC_MEMORY_TRACING_SUPPORTED
#endif

namespace base {
namespace trace_event {

class MemoryAllocatorDump;

// Dump provider which collects process-wide memory stats.
class BASE_EXPORT MallocDumpProvider : public MemoryDumpProvider { … };

#if PA_BUILDFLAG(USE_PARTITION_ALLOC)
// 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 BASE_EXPORT MemoryDumpPartitionStatsDumper final
    : public partition_alloc::PartitionStatsDumper { … };

#endif  // PA_BUILDFLAG(USE_PARTITION_ALLOC)

}  // namespace trace_event
}  // namespace base

#endif  // BASE_TRACE_EVENT_MALLOC_DUMP_PROVIDER_H_