node/cppgc/process-heap-statistics.h

0001 // Copyright 2020 the V8 project authors. All rights reserved.
0002 // Use of this source code is governed by a BSD-style license that can be
0003 // found in the LICENSE file.
0004
0005 #ifndef INCLUDE_CPPGC_PROCESS_HEAP_STATISTICS_H_
0006 #define INCLUDE_CPPGC_PROCESS_HEAP_STATISTICS_H_
0007
0008 #include <atomic>
0009 #include <cstddef>
0010
0011 #include "v8config.h"  // NOLINT(build/include_directory)
0012
0013 namespace cppgc {
0014 namespace internal {
0015 class ProcessHeapStatisticsUpdater;
0016 }  // namespace internal
0017
0018 class V8_EXPORT ProcessHeapStatistics final {
0019  public:
0020   static size_t TotalAllocatedObjectSize() {
0021     return total_allocated_object_size_.load(std::memory_order_relaxed);
0022   }
0023   static size_t TotalAllocatedSpace() {
0024     return total_allocated_space_.load(std::memory_order_relaxed);
0025   }
0026
0027  private:
0028   static std::atomic_size_t total_allocated_space_;
0029   static std::atomic_size_t total_allocated_object_size_;
0030
0031   friend class internal::ProcessHeapStatisticsUpdater;
0032 };
0033
0034 }  // namespace cppgc
0035
0036 #endif  // INCLUDE_CPPGC_PROCESS_HEAP_STATISTICS_H_