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base / allocator / partition_allocator / src / partition_alloc / address_space_stats.h [blame]
// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef PARTITION_ALLOC_ADDRESS_SPACE_STATS_H_
#define PARTITION_ALLOC_ADDRESS_SPACE_STATS_H_
#include <cstddef>
#include "partition_alloc/buildflags.h"
#include "partition_alloc/partition_alloc_base/component_export.h"
namespace partition_alloc {
// All members are measured in super pages.
struct PoolStats {
size_t usage = 0;
// On 32-bit, pools are mainly logical entities, intermingled with
// allocations not managed by PartitionAlloc. The "largest available
// reservation" is not possible to measure in that case.
#if PA_BUILDFLAG(HAS_64_BIT_POINTERS)
size_t largest_available_reservation = 0;
#endif
};
struct AddressSpaceStats {
PoolStats regular_pool_stats;
#if PA_BUILDFLAG(ENABLE_BACKUP_REF_PTR_SUPPORT)
PoolStats brp_pool_stats;
#endif // PA_BUILDFLAG(ENABLE_BACKUP_REF_PTR_SUPPORT)
#if PA_BUILDFLAG(HAS_64_BIT_POINTERS)
PoolStats configurable_pool_stats;
#else
#if PA_BUILDFLAG(ENABLE_BACKUP_REF_PTR_SUPPORT)
size_t blocklist_size; // measured in super pages
size_t blocklist_hit_count;
#endif // PA_BUILDFLAG(ENABLE_BACKUP_REF_PTR_SUPPORT)
#endif // PA_BUILDFLAG(HAS_64_BIT_POINTERS)
#if PA_BUILDFLAG(ENABLE_THREAD_ISOLATION)
PoolStats thread_isolated_pool_stats;
#endif
};
// Interface passed to `AddressPoolManager::DumpStats()` to mediate
// for `AddressSpaceDumpProvider`.
class PA_COMPONENT_EXPORT(PARTITION_ALLOC) AddressSpaceStatsDumper {
public:
virtual void DumpStats(const AddressSpaceStats* address_space_stats) = 0;
virtual ~AddressSpaceStatsDumper() = default;
};
} // namespace partition_alloc
#endif // PARTITION_ALLOC_ADDRESS_SPACE_STATS_H_